Zoology Research 
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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 32.
A new inhibitory pathway in the jellyfish Polyorchis penicillatus
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Canadian Journal of Zoology, Volume 0, Issue 0, Page 172-181, e-First articles.
Source: Canadian Journal of Zoology - January 31, 2012 Category: Zoology Tags: article Source Type: research
Dates of publication of issues / Dates de parution des numérosEmail this article to a colleague.
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Canadian Journal of Zoology, Volume 0, Issue 0, Page iii, e-First articles.
Source: Canadian Journal of Zoology - January 31, 2012 Category: Zoology Tags: article Source Type: research
Common nucleotide sequence of structural gene encoding fibroblast growth factor 4 in eight cattle derived from three breedsEmail this article to a colleague.
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ABSTRACTFibroblast growth factor 4 (FGF4) is considered as a crucial gene for the proper development of bovine embryos. However, the complete nucleotide sequences of the structural genes encoding FGF4 in identified breeds are still unknown. In the present study, direct sequencing of PCR products derived from genomic DNA samples obtained from three Japanese Black, two Japanese Shorthorn and three Holstein cattle, revealed that the nucleotide sequences of the structural gene encoding FGF4 matched completely among these eight cattle. On the other hand, differences in the nucleotide sequences, leading to substitutions, inserti...
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Sho SATO, Toshikiyo TAKAHASHI, Hiroshi NISHINOMIYA, Makiko KATOH, Ryu ITOH, Masaki YOKOO, Mari YOKOO, Momoe IHA, Yuki MORI, Kano KASUGA, Ikuo KOJIMA, Masayuki KOBAYASHI Source Type: research
Effect of replacing corn with brown rice grain in a total mixed ration silage on milk production, ruminal fermentation and nitrogen balance in lactating dairy cowsEmail this article to a colleague.
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ABSTRACTNine multiparous Holstein cows were used in a replicated 3 × 3 Latin square design to determine the effects of substituting corn grain with brown rice (BR) grain in total mixed ration (TMR) silage on milk yield, ruminal fermentation and nitrogen (N) balance. The TMR silages were made from the ensiling of TMR containing (dry matter basis) 50.1% forage in rice silage and corn silage combination, and 49.9% concentrate. The grain portion of the diets contained 31.2% steam‐flaked corn, 31.2% steam‐flaked BR or an equal mixture of corn and BR. Dietary treatments did not affect dry matter intake, milk yield and m...
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Makoto MIYAJI, Hiroki MATSUYAMA, Kenji HOSODA, Kazuhisa NONAKA Source Type: research
Effects of photoperiod on the secretion of growth hormone in female goatsEmail this article to a colleague.
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ABSTRACTThe aim of the present study was to clarify the effect of photoperiod on the secretion of growth hormone (GH) in goats. Adult female goats were kept at 20°C with an 8‐h or 16‐h photoperiod, and secretory patterns of GH for 4 h (12.00 to 16.00 hours) were compared. In addition, the goats were kept under a 16‐h photoperiod and orally administered saline (controls) or melatonin, and the effects of melatonin on the secretion of GH were examined. GH was secreted in a pulsatile manner. There were no significant differences in pulse frequency between the 8‐ and 16‐h photoperiods; however, GH pulse amplitude t...
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Jin JIN, Tomoyoshi YAEGASHI, Ken SAWAI, Tsutomu HASHIZUME Source Type: research
Feeding Aspergillus awamori reduces skeletal muscle protein breakdown and stimulates growth in broilersEmail this article to a colleague.
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In conclusion, feeding A. awamori improves growth performance because skeletal muscle proteolytic activity is reduced and digestibilities of energy and protein are increased.
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Ahmed A. SALEH, Yahya Z. EID, Tarek A. EBEID, Akira OHTSUKA, Masahiro YAMAMOTO, Kunioki HAYASHI Source Type: research
Sulfated cholecystokinin‐8 increases ghrelin secretion but does not affect oxyntomodulin in Holstein steersEmail this article to a colleague.
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In conclusion, our results show that administration of CCK increased ghrelin secretion but did not affect OXM release in ruminants. Ghrelin did not affect the secretions of CCK and OXM.
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Swe YANNAING, Hnin THIDARMYINT, Hongqiong ZHAO, Sint THANTHAN, Kouki KITAGAWA, Hideto KUWAYAMA Source Type: research
Polymorphism of spermatozoa in Largus rufipennis Laporte 1832 (Heteroptera: Pyrrhocoroidea: Largidae)Email this article to a colleague.
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AbstractThe production of polymorphic spermatozoa has been registered in various insect orders such as Diptera, Lepidoptera, and Hemiptera. In this work, morphology of two types of spermatozoa produced by Largus rufipennis was reported for the first time in the Largidae family. For this, techniques including optical and transmission electron microscopy were used. Spermatozoa measured, on the average, 260 and 200 μm, and both types possessed a nucleus measuring on the average 65 μm. No ultrastructural differences were observed between the two spermatozoa types from L. rufipennis. The head region is composed of an acros...
Source: Acta Zoologica - January 30, 2012 Category: Zoology Authors: Vinícius Albano Araújo, Sônia Nair Báo, José Lino‐Neto Tags: Original Article Source Type: research
Relationship Between Condition, Aggression, Signaling, Courtship, and Egg Laying in the Field Cricket, Gryllus assimilisEmail this article to a colleague.
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AbstractSexual selection theory suggests males in good condition should be more successful than males in poor condition when competing with rivals for territories and mates. Understanding how condition influences the interplay between aggression, mate attraction, and courtship displays could help explain why variation is maintained in traits that confer fitness. Using laboratory‐reared Jamaican field crickets, Gryllus assimilis, we found that fine‐scale temporal components of mate attraction signals were positively correlated with body condition (residual body mass) and body size; signaling effort was positively correl...
Source: Ethology - January 30, 2012 Category: Zoology Authors: Susan M. BertramVanessa Rook Tags: RESEARCH PAPER Source Type: research
Effect of replacing corn with brown rice grain in a total mixed ration silage on milk production, ruminal fermentation and nitrogen balance in lactating dairy cowsEmail this article to a colleague.
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ABSTRACTNine multiparous Holstein cows were used in a replicated 3 × 3 Latin square design to determine the effects of substituting corn grain with brown rice (BR) grain in total mixed ration (TMR) silage on milk yield, ruminal fermentation and nitrogen (N) balance. The TMR silages were made from the ensiling of TMR containing (dry matter basis) 50.1% forage in rice silage and corn silage combination, and 49.9% concentrate. The grain portion of the diets contained 31.2% steam‐flaked corn, 31.2% steam‐flaked BR or an equal mixture of corn and BR. Dietary treatments did not affect dry matter intake, milk yield and m...
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Makoto MIYAJIHiroki MATSUYAMAKenji HOSODAKazuhisa NONAKA Source Type: research
Effects of photoperiod on the secretion of growth hormone in female goatsEmail this article to a colleague.
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ABSTRACTThe aim of the present study was to clarify the effect of photoperiod on the secretion of growth hormone (GH) in goats. Adult female goats were kept at 20°C with an 8‐h or 16‐h photoperiod, and secretory patterns of GH for 4 h (12.00 to 16.00 hours) were compared. In addition, the goats were kept under a 16‐h photoperiod and orally administered saline (controls) or melatonin, and the effects of melatonin on the secretion of GH were examined. GH was secreted in a pulsatile manner. There were no significant differences in pulse frequency between the 8‐ and 16‐h photoperiods; however, GH pulse amplitude t...
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Jin JINTomoyoshi YAEGASHIKen SAWAITsutomu HASHIZUME Source Type: research
Feeding Aspergillus awamori reduces skeletal muscle protein breakdown and stimulates growth in broilersEmail this article to a colleague.
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In conclusion, feeding A. awamori improves growth performance because skeletal muscle proteolytic activity is reduced and digestibilities of energy and protein are increased.
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Ahmed A. SALEHYahya Z. EIDTarek A. EBEIDAkira OHTSUKAMasahiro YAMAMOTOKunioki HAYASHI Source Type: research
Common nucleotide sequence of structural gene encoding fibroblast growth factor 4 in eight cattle derived from three breedsEmail this article to a colleague.
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ABSTRACTFibroblast growth factor 4 (FGF4) is considered as a crucial gene for the proper development of bovine embryos. However, the complete nucleotide sequences of the structural genes encoding FGF4 in identified breeds are still unknown. In the present study, direct sequencing of PCR products derived from genomic DNA samples obtained from three Japanese Black, two Japanese Shorthorn and three Holstein cattle, revealed that the nucleotide sequences of the structural gene encoding FGF4 matched completely among these eight cattle. On the other hand, differences in the nucleotide sequences, leading to substitutions, inserti...
Source: Animal Science Journal - January 30, 2012 Category: Zoology Authors: Sho SATOToshikiyo TAKAHASHIHiroshi NISHINOMIYAMakiko KATOHRyu ITOHMasaki YOKOOMari YOKOOMomoe IHAYuki MORIKano KASUGAIkuo KOJIMAMasayuki KOBAYASHI Source Type: research
Habitat use, population dynamics and species identification of mulgara, Dasycercus blythi and D. cristicauda, in a zone of sympatry in central AustraliaEmail this article to a colleague.
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Chris R. Pavey, Catherine E. M. Nano, Steven J. B. Cooper, Jeff R. Cole, Peter J. McDonald
Source: Australian Journal of Zoology - January 30, 2012 Category: Zoology Authors: Chris R. PaveyCatherine E. M. NanoSteven J. B. CooperJeff R. ColePeter J. McDonald Source Type: research
Attending to detail by communal spider-eating spiders.Email this article to a colleague.
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Abstract
Communal predators may often need to make especially intricate foraging decisions, as a predator's success may depend on the actions of its neighbours. Here, we consider the decisions made by Portia africana, a jumping spider (Salticidae) that preys on other spiders, including Oecobius amboseli (Oecobiidae), a small prey spider that lives under small sheets of silk (nests) on the walls of buildings. P. africana juveniles settle near oecobiid nests and then ambush oecobiids as they leave or enter the nest. Two or more P. africana juveniles sometimes settle at the same nest and, when an oecobiid is...
Source: Animal Cognition - January 28, 2012 Category: Zoology Authors: Jackson RR, Nelson XJ Tags: Anim Cogn Source Type: research
Largemouth bass (Micropterus salmoides) switch feeding modalities in response to sensory deprivation.Email this article to a colleague.
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This study demonstrates that sensory pre-strike information directly affects the capture modality employed by fishes and that fish can modulate between ram and suction not only by adjusting the amount of ram by increasing or decreasing their movements, but also by actively increasing the amount of suction used. These results suggest that the ability to modulate feeding behavior may allow animals to not only exploit a broader breadth of prey items, but also to be capable of doing so in a wider variety of environments.
PMID: 22285791 [PubMed - as supplied by publisher]
Source: Zoology - January 27, 2012 Category: Zoology Authors: Gardiner JM, Motta PJ Tags: Zoology (Jena) Source Type: research
In vitro differentiation of human skin-derived multipotent stromal cells into putative endothelial-like cellsEmail this article to a colleague.
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Conclusions:
Our data is the first to demonstrate that human dermal skin stromal cells can be differentiated into endothelial lineage. Hence, SSCs represents a novel source of stem/stromal cells for tissue regeneration and the vascularization of engineered tissues. Moreover, the CD146 investigations suggested that the microenvironmental niche might contribute to direct stromal cells multipotency toward certain lineages, which warrants further investigation.
Source: BMC Developmental Biology - Latest articles - January 27, 2012 Category: Zoology Authors: Radhakrishnan VishnubalajiMuthurangan ManikandanMay Al-NbaheenBalamuthu KadalmaniAbdullah AldahmashNehad Alajez Source Type: research
Generally specialized or especially general? Habitat selection by Snapping Turtles (Chelydra serpentina) in central OntarioEmail this article to a colleague.
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Canadian Journal of Zoology, Volume 0, Issue 0, Page 139-149, e-First articles.
Source: Canadian Journal of Zoology - January 25, 2012 Category: Zoology Tags: article Source Type: research
Everybody Needs Good Neighbours: Coalition Formation Influences Floater Fight ChoiceEmail this article to a colleague.
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AbstractIn territorial species, it is sometimes less costly to help a neighbour fight off an intruder than to re‐establish territory boundaries with a new, potentially stronger neighbour. In fiddler crabs, a male resident will only help his neighbour if he is larger than the intruder who, in turn, is larger than the challenged neighbour. Does this influence with whom a territory‐seeking male decides to fight? I show that territory‐seeking males appear to choose opponents based partly on the size of the resident’s nearest neighbour. By avoiding challenging resident males with larger neighbours, territory‐seeking m...
Source: Ethology - January 25, 2012 Category: Zoology Authors: Richard N. C. Milner Tags: RESEARCH PAPER Source Type: research
The complete larval development of Panopeus lacustris Desbonne 1867 (Brachyura: Panopeidae), from the Amazon region, reared in the laboratoryEmail this article to a colleague.
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Abstractde Souza, A.S., da Costa R.M. and Abrunhosa F.A. 2011. The complete larval development of Panopeus lacustris Desbonne 1867 (Brachyura: Panopeidae), from the Amazon region, reared in the laboratory. —Acta Zoologica (Stockholm) 00: 1–16.Larvae of the mud crab Panopeus lacustris were reared in laboratory from ovigerous females collected in the estuarine area of the Caeté River in the Amazonian region. The complete development of this species consisted of four zoeal and one megalopal stages, which were described and illustrated in detail. The results are compared with those of other previous studies on larval deve...
Source: Acta Zoologica - January 25, 2012 Category: Zoology Authors: Adelson S. de Souza, Rauquírio M. da Costa, Fernando A. Abrunhosa Source Type: research
Sexual dimorphisms in the dermal structure of the lesser‐spotted catshark, Scyliorhinus canicula (Linnaeus, 1758)Email this article to a colleague.
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This study reveals that not only do adult (M ≥ 525 mm, F ≥ 550 mm) S. canicula show a sexual dimorphism in the epidermis and dermis, but that hatchling S. canicula are born with a sexually dimorphic epidermal layer and this persists into the juvenile stage (M < 525 mm, F < 550 mm). A sexual dimorphism was found in all size classes with both hatchling and juvenile female S. canicula having significantly thicker epidermal layers than hatchling and juvenile male S. canicula. Adult female S. canicula were found to possess both a significantly thicker epidermal and dermal layer than adult male S. cani...
Source: Acta Zoologica - January 25, 2012 Category: Zoology Authors: Neil Crooks, Colin P. Waring Tags: Original Article Source Type: research
Applications of diagnostic ultrasonography in small ruminant reproductive management.Email this article to a colleague.
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Abstract
Modern portable ultrasound machines provide the veterinary clinician with an inexpensive and non-invasive method to further examine the reproductive tract of both male and female sheep on farm which should take no more than 5min with the results available immediately. Unlike cattle, ultrasound examination of the ovaries is not undertaken because failure to cycle during the normal season is rare in sheep and there are no common ovarian conditions causing acyclicity. Accurate diagnosis of foetal number has greatly improved the nutritional management of late gestation ewes over the past 30 years. Late gestati...
Source: Animal Reproduction Science - January 25, 2012 Category: Zoology Authors: Scott PR Tags: Anim Reprod Sci Source Type: research
Nutrition of females during the peri-conceptional period and effects on foetal programming and health of offspring.Email this article to a colleague.
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Abstract
The period around the time of conception is one characterised by considerable cytological and molecular restructuring as ovulation occurs, the oocyte is fertilised and the embryonic developmental programme begins. The intrinsic processes regulating peri-conceptional progression are supplemented by environmental factors, which contribute important metabolic information that influences several aspects of the developmental programme. Indeed, there is growing evidence from different mammalian animal models, reviewed here, that the peri-conceptional environment mediated through maternal nutrition can modify dev...
Source: Animal Reproduction Science - January 25, 2012 Category: Zoology Authors: Fleming TP, Velazquez MA, Eckert JJ, Lucas ES, Watkins AJ Tags: Anim Reprod Sci Source Type: research
Health management of ewes during pregnancy.Email this article to a colleague.
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The objectives of health management of ewes during pregnancy are as follows: (i) successful completion of pregnancy at term, (ii) birth of healthy and viable lambs, with optimal birth and potential weaning bodyweight, (iii) optimum milk production during the subsequent lactation and (iv) improved management in relation to drug residues in animal products. Knowledge of the physiological background of pregnancy in ewes: changes, mechanisms and interactions, during pregnancy is important for the overall health management of ewes during pregnancy. Health management of pregnant ewes includes diagnosis of pregnancy and evaluatio...
Source: Animal Reproduction Science - January 25, 2012 Category: Zoology Authors: Fthenakis GC, Arsenos G, Brozos C, Fragkou IA, Giadinis ND, Giannenas I, Mavrogianni VS, Papadopoulos E, Valasi I Tags: Anim Reprod Sci Source Type: research
The complete larval development of Panopeus lacustris Desbonne 1867 (Brachyura: Panopeidae), from the Amazon region, reared in the laboratoryEmail this article to a colleague.
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Abstractde Souza, A.S., da Costa R.M. and Abrunhosa F.A. 2011. The complete larval development of Panopeus lacustris Desbonne 1867 (Brachyura: Panopeidae), from the Amazon region, reared in the laboratory. —Acta Zoologica (Stockholm) 00: 1–16.Larvae of the mud crab Panopeus lacustris were reared in laboratory from ovigerous females collected in the estuarine area of the Caeté River in the Amazonian region. The complete development of this species consisted of four zoeal and one megalopal stages, which were described and illustrated in detail. The results are compared with those of other previous studies on larval deve...
Source: Acta Zoologica - January 25, 2012 Category: Zoology Authors: Adelson S. de SouzaRauquírio M. da CostaFernando A. Abrunhosa Source Type: research
Effects of the inhibition of cytosolic phospholipase A2α in non-small cell lung cancer cellsEmail this article to a colleague.
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Conclusions Pyrrolidine-2 is a more potent and specific cPLA2α inhibitor than MAFP and AACOCF3 and represents an excellent pharmacological tool to investigate the biosynthesis and the
biological roles of cancer. The present study suggests that pyrrolidine-2 could be a potential therapeutic agent for cancer
therapy.
Content Type Journal ArticleCategory Original PaperPages 1-9DOI 10.1007/s00432-012-1157-7Authors
Shenbagamoorthy Sundarraj, Proteomics and Molecular Cell Physiology Laboratory, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, 641046 TN, IndiaSoundarapand...
Source: Journal of Cancer Research and Clinical Oncology - January 24, 2012 Category: Cancer & Oncology Tags: Journal of Cancer Research and Clinical Oncology Source Type: research
Factors shaping gene flow in red deer (Cervus elaphus) in seminatural landscapes of central EuropeEmail this article to a colleague.
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Canadian Journal of Zoology, Volume 0, Issue 0, Page 150-162, e-First articles.
Source: Canadian Journal of Zoology - January 24, 2012 Category: Zoology Tags: article Source Type: research
Transcriptional signature of accessory cells in the lateral line, using the Tnk1bp1:EGFP transgenic zebrafish lineEmail this article to a colleague.
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Conclusions:
We present a Tg(tnks1bp1:EGFP) stable transgenic line, which we used to establish a transcriptional profile of supporting cells in the zebrafish lateral line. Therefore we are providing a new set of markers specific for supporting cells as well as candidates for functional analysis of this important cell type. This will prove to be a valuable tool for the study of regeneration in the lateral line of zebrafish in particular and for regeneration of neuroepithelia in general.
Source: BMC Developmental Biology - Latest articles - January 24, 2012 Category: Zoology Authors: Martine BehraViviana GallardoJohn BradsherAranza TorradoAbdel ElkahlounJennifer IdolJessica SheehySeth ZoniesLisha XuKenna ShawChie SatouShin-ichi HigashijimaBrant WeinsteinShawn Burgess Source Type: research
Landscape requirements of a primate population in a human-dominated environmentEmail this article to a colleague.
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Conclusions:
The model results indicate that land development in the Cape Peninsula has pushed baboons into increasingly marginal natural habitat while simultaneously providing them with predictable and easily accessible food sources in human-modified habitats. The resultant spatial competition between humans and baboons explains the high levels of human-baboon conflict and further erosion of the remaining land fragments is predicted to exacerbate competition. This study demonstrates how the quantification of animal landscape requirements can provide a mechanism for identifying priority conservation areas at the human-wildlife interface.
Source: Frontiers in Zoology - January 23, 2012 Category: Zoology Authors: Tali HoffmanM O'Riain Source Type: research
Regulation of aggregate size and pattern by adenosine and caffeine in cellular slime moldsEmail this article to a colleague.
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Conclusion:
Adenosine increased the cell division timings thereby making large number of cells available for aggregation and also it marginally increased the cell size contributing to large aggregate size. Reduced cell division rates and decreased cell size in the presence of caffeine makes the aggregates smaller than controls. Both the compounds altered the speed of the chemotactic amoebae causing a variation in aggregate size. Our data strongly suggests that cytosolic glucose and extracellular cAMP levels are the other major determinants regulating aggregate size and pattern. Importantly, the aggregation process is conse...
Source: BMC Developmental Biology - Latest articles - January 23, 2012 Category: Zoology Authors: Pundrik JaiswalThierry SoldatiSascha ThewesRamamurthy Baskar Source Type: research
Spatial Proximity between Newborns Influences the Development of Social Relationships in BatsEmail this article to a colleague.
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AbstractAlthough bats are highly social mammals, the mechanisms influencing the establishment of social structures are far from being fully understood. So far, no study has addressed the effects of spatial proximity between newborns such as that occurring in nursery clusters on the development of preferential associations among individuals. We tested such effects on captive pups of Kuhl’s pipistrelle Pipistrellus kuhlii. During the first 6 wks, we kept them in separate rearing groups. Once able to fly, bats were allowed to freely interact in a common flight room, where those reared in the same groups showed higher rate...
Source: Ethology - January 21, 2012 Category: Zoology Authors: Leonardo AncillottoMaria Tiziana SerangeliDanilo Russo Tags: RESEARCH PAPER Source Type: research
The Starvation-Predation Trade-Off Predicts Trends in Body Size, Muscularity, and Adiposity between and within TaxaEmail this article to a colleague.
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The American Naturalist, Volume 0, Issue 0, Page 000, Ahead of Print.
Source: The American Naturalist - January 19, 2012 Category: Zoology Tags: article Source Type: research
Historical perspectives of The American Association for Thoracic Surgery: Alfred Blalock (1899–1964)Email this article to a colleague.
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Alfred Blalock, the 30th president of The American Association for Thoracic Surgery (AATS), was born on April 5, 1899, in the small town of Culloden, Georgia. Located in Monroe County in central Georgia, Culloden is approximately 0.8 square miles in size and, according to the United States Census of 1900, had a population of 334. Blalock was the eldest of 5 children born to George Z. Blalock and Martha (Davis) Blalock. The elder Blalock was a merchant and the owner of a cotton plantation. Often referenced as a firm disciplinarian, Blalock’s father placed a significant value on education. According to his sister, Alfred w...
Source: The Journal of Thoracic and Cardiovascular Surgery - January 19, 2012 Category: Cardiovascular & Thoracic Surgery Authors: Claude A. Beaty, Timothy J. George, John V. Conte Tags: Presidential Perspectives Source Type: research
p53 codon 72 polymorphism and endometriosis: a meta-analysisEmail this article to a colleague.
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Conclusion This meta-analysis suggests that p53 codon 72 Pro/Pro + Arg/Pro genotypes are associated with increased risk of endometriosis
in Asian. To validate the association between p53 codon 72 polymorphism and endometriosis, further studies with larger participants
worldwide are needed.
Content Type Journal ArticleCategory General GynecologyPages 1-5DOI 10.1007/s00404-012-2226-5Authors
Shuting Jia, Laboratory of Molecular Genetics of Aging and Tumor, Faculty of Life Science and Technology, Kunming University of Science and Technology, Chenggong Campus, 727 South Jingming Road, Kunming, ...
Source: Archives of Gynecology and Obstetrics - January 19, 2012 Category: OBGYN Tags: Archives of Gynecology and Obstetrics Source Type: research
Sperm nucleus decondensation, hyaluronic acid (HA) binding and oocyte activation capacity: different markers of sperm immaturity? Case reportsEmail this article to a colleague.
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Content Type Journal ArticleCategory Gamete BiologyPages 1-3DOI 10.1007/s10815-012-9710-5Authors
Am Junca, UNILABS, Clinique de la Muette, 55 Rue St Didier, 75116 Paris, FranceBeatriz Gonzalez Marti, UNILABS, Clinique de la Muette, 55 Rue St Didier, 75116 Paris, FranceElisabetta Tosti, Stazione Zoologica, Villa comunale 1, 80121 Naples, ItalyMarc Cohen, Procrelys, Maison médicale Ambroise Paré, 28 avenue Rockefeller, 69008 Lyon, FranceDidier De la fontaine, UNILABS, Clinique de la Muette, 55 Rue St Didier, 75116 Paris, FranceMoncef Benkhalifa, UNILABS, Clinique de la Muette, 55 Rue St Didier, 75116 Paris, FranceYves ...
Source: Journal of Assisted Reproduction and Genetics - January 18, 2012 Category: Reproduction Medicine Tags: Journal of Assisted Reproduction and Genetics Source Type: research
The pheromones of laying workers in two honeybee sister species: Apis cerana and Apis melliferaEmail this article to a colleague.
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Abstract When a honeybee colony loses its queen, workers activate their ovaries and begin to lay eggs. This is accompanied by a shift
in their pheromonal bouquet, which becomes more queen like. Workers of the Asian hive bee Apis cerana show unusually high levels of ovary activation and this can be interpreted as evidence for a recent evolutionary arms race
between queens and workers over worker reproduction in this species. To further explore this, we compared the rate of pheromonal
bouquet change between two honeybee sister species of Apis cerana and Apis mellifera under queenright and queenless conditions. ...
Source: Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology - January 18, 2012 Category: Physiology Tags: Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology Source Type: research
Sensilla on maxillary and labial palps in a helicophagous ground beetle larva (Coleoptera, Carabidae)Email this article to a colleague.
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AbstractGiglio, A., Perrotta, E., Talarico, F., Zetto Brandmayr, T. and Ferrero, E.A. 2011. Sensilla on maxillary and labial palps in a helicophagous ground beetle larva (Coleoptera, Carabidae). —Acta Zoologica (Stockholm) 00: 1–8.Sensilla on the labial and maxillary palp of Carabus lefebvrei Dejean, 1826 larvae were investigated using scanning and transmission electron microscopy. Two identical sets of sensilla were present on the tips of both palp pairs, and four morphological types of sensilla were identified: sensilla basiconica types 1 and 2, sensilla coeloconica and sensilla digitiformia. Ultrastructure indicates...
Source: Acta Zoologica - January 18, 2012 Category: Zoology Authors: Anita Giglio, Enrico Perrotta, Federica Talarico, Tullia Zetto Brandmayr, Enrico A. Ferrero Source Type: research
Fine scale analysis of gene expression in Drosophila melanogaster gonads reveals Programmed cell death 4 promotes the differentiation of female germline stem cellsEmail this article to a colleague.
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Conclusions:
We propose that Pdcd4 promotes the differentiation of GSC daughter cells by relieving the eIF4A-mediated inhibition of Bam.
Source: BMC Developmental Biology - Latest articles - January 17, 2012 Category: Zoology Authors: Amy CashJusten Andrews Source Type: research
An aerolysin‐like enterotoxin from Vibrio splendidus may be involved in intestinal tract damage and mortalities in turbot, Scophthalmus maximus (L.), and cod, Gadus morhua L., larvaeEmail this article to a colleague.
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AbstractVibrio splendidus is a pathogen that can cause major losses during the early stages of larval turbot rearing when live feed (rotifers or Artemia) is used. As haemolytic bacteria have often been associated with larval rearing losses, we studied the role of the V. splendidus haemolysin in infection of larvae. From a bank of over 10 000 transposon mutants of V. splendidus, two different types of haemolysin‐negative mutants were obtained. Both had lost virulence for larval fish, and immunohistochemistry showed that the transposon mutant studied colonized the turbot larval intestinal tract at a similar level to th...
Source: Journal of Fish Diseases - January 16, 2012 Category: Zoology Authors: H L MacphersonØ BerghT H Birkbeck Source Type: research
Parasites and hepatic lesions among pink salmon, Oncorhynchus gorbuscha (Walbaum), during early seawater residenceEmail this article to a colleague.
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AbstractJuvenile pink salmon, Oncorhynchus gorbuscha (Walbaum), in the Broughton Archipelago region of western Canada were surveyed over 2 years for sea lice (Lepeophtheirus salmonis and Caligus clemensi), gross and microscopic lesions and evidence of infections with viruses and bacteria. The 1071 fish examined had an approximate ocean residence time no longer than 3 months. A high prevalence of degenerative liver lesions, renal myxosporean parasites and a low prevalence of skin lesions and sea lice were observed. No indications of viral or bacterial diseases were detected in either year. The monthly prevalence of sea ...
Source: Journal of Fish Diseases - January 16, 2012 Category: Zoology Authors: S M SaksidaG D MartyS R M JonesH A ManchesterC L DiamondJ BidulkaS St‐Hilaire Source Type: research
Tetradecylthioacetic acid modulates cardiac transcription in Atlantic salmon, Salmo salar L., suffering heart and skeletal muscle inflammationEmail this article to a colleague.
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AbstractHeart and skeletal muscle inflammation (HSMI) is a disease causing considerable mortality in farmed Atlantic salmon. We have previously reported that pre‐feeding of tetradecylthioacetic acid (TTA) reduces the mortality during a natural outbreak of HSMI. In the present paper we show that in the cardiac ventricle, during HSMI infection, pre‐feeding TTA increases the expression of the immune genes: TNFα, VCAM‐1, IgM and CD8α. We also show that TTA increases the cardiosomatic index potentially by elevating cardiomyogenesis through activation of the cardiac transcription factors MEF2C and Nkx2.5. Using the recen...
Source: Journal of Fish Diseases - January 16, 2012 Category: Zoology Authors: F GrammesK‐A RørvikH Takle Source Type: research
Nutrition and health of aquaculture fishEmail this article to a colleague.
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This study reviews knowledge of the effect of diet nutrients on health, welfare and improvement of disease resistance in fish.
Source: Journal of Fish Diseases - January 16, 2012 Category: Zoology Authors: A Oliva‐Teles Tags: Review Article Source Type: research
Field tests of Poly(I:C) immunization with nervous necrosis virus (NNV) in sevenband grouper, Epinephelus septemfasciatus (Thunberg)Email this article to a colleague.
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AbstractIt was recently reported that Poly(I:C) immunization with live nervous necrosis virus (NNV) confers protection in sevenband grouper, Epinephelus septemfasciatus (Thunberg), from NNV infection. In the present study, we conducted field tests with sevenband grouper for the evaluation of Poly(I:C) immunization efficacy. In the first experiment, sevenband grouper were immunized with NNV followed by Poly(I:C) administration 7 weeks before natural occurrence of viral nervous necrosis (VNN). Survival rate of the naïve fish was 71.0%, whereas that of the immunized fish was 99.8%. In the second experiment, sevenband group...
Source: Journal of Fish Diseases - January 16, 2012 Category: Zoology Authors: M‐J OhI TakamiT NishizawaW‐S KimC‐S KimS‐R KimM‐A Park Source Type: research
Repeated Recent Aggressive Encounters Do Not Affect Behavioral Consistency in Male Siamese Fighting FishEmail this article to a colleague.
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This study demonstrates that consistent individual differences and decision‐making strategies may be resistant to recent aggressive experiences, even over a period of days.
Source: Ethology - January 16, 2012 Category: Zoology Authors: Teresa L. DzieweczynskiKalyn R. SullivanLindsay M. ForretteOlivia L. Hebert Tags: RESEARCH PAPER Source Type: research
Temporal properties of visual search in pigeon target localization.Email this article to a colleague.
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To examine the mechanisms and time course of visual search behavior, we rewarded 6 experienced pigeons for locating and pecking at an odd target region randomly embedded in a larger rectangular array of contrasting distractor elements. On two-target test trials, a flanking secondary target region was briefly presented (100, 250, or 500 ms) after display onset with stimulus onset asynchrony values of 0, 50, 100, 175, 250, 375, 500, 1000, 2000, and 3000 ms. Two types of interference effects were possibly identified with target localization accuracy. One type occurred early in processing, where the secondary target appeared t...
Source: Journal of Experimental Psychology: Animal Behavior Processes - January 16, 2012 Category: Zoology Authors: Cook, Robert G.; Katz, Jeffrey S.; Blaisdell, Aaron P. Source Type: research
Dissociating expectancy of shock and changes in skin conductance: An investigation of the Perruchet effect using an electrodermal paradigm.Email this article to a colleague.
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Is human Pavlovian conditioning driven by a unitary, propositional system (as claimed by Mitchell, De Houwer, & Lovibond, 2009) or by dual systems; one under conscious control, symbolic in nature, and requiring effort to deploy, and the other utilizing associative processes and automatic in its operation (McLaren, Green, & Mackintosh, 1994)? Past research has suggested that for electrodermal conditioning to occur in humans, conscious awareness of the contingencies is necessary to produce conditioned responding (e.g., Hinchy, Lovibond, & Ter-Horst, 1995), as predicted by single process theories that attribute the conditione...
Source: Journal of Experimental Psychology: Animal Behavior Processes - January 16, 2012 Category: Zoology Authors: McAndrew, A.; Jones, F. W.; McLaren, R. P.; McLaren, I. P. L. Source Type: research
The content of compound conditioning.Email this article to a colleague.
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In three experiments using Pavlovian conditioning of magazine approach, rats were trained with a compound stimulus, AB, and were concurrently trained with stimulus B on its own. The reinforcement rate of B, rB, was either 1/2, 2/3, or 2/5 ofrAB. After extended training, the conditioning strength of A was assessed using probe trials in which A was presented alone. Responding during A was compared with that during AB, B, and a third stimulus, C, for which rC = rAB − rB. In each experiment, the rats' response rate during A was almost identical to that during C (and during B, when rB = 1/2rAB). This suggests that, during AB ...
Source: Journal of Experimental Psychology: Animal Behavior Processes - January 16, 2012 Category: Zoology Authors: Harris, Justin A.; Andrew, Benjamin J.; Livesey, Evan J. Source Type: research
Effect of iodine, selenium and cobalt rumen boluses given to dry dairy cows on the immunoglobulin and thyroid hormone status of calvesEmail this article to a colleague.
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The objective was to determine the effect of rumen boluses containing 6800 mg iodine, 1000 mg selenium and 1000 mg cobalt given to dry dairy cows on the efficiency of colostral immunoglobulin G (IgG) absorption in calves. Thirteen cows received the bolus approximately 58 days before calving. A further 12 cows received no bolus and were used as controls. The cows were housed as one group. Calves were prevented from suckling for the first 24 h of life, and were given three feeds of a fixed quantity of colostrum. At 24 h, the average plasma concentrations of IgG in the calves were 15.5 and 13.4 g/L for the contr...
Source: Animal Science Journal - January 13, 2012 Category: Zoology Authors: Michael ROSE, Sam PEARSON, Tom CRATCHLEY Source Type: research
Regional and circadian variations of sweating rate and body surface temperature in camels (Camelus dromedarius)Email this article to a colleague.
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This study was conducted on five dromedary camels with mean body weight of 450 ± 20.5 kg and 2 years of age. Sweating rate, skin and body surface temperature showed significant (P < 0.001) circadian variation together with the variation in ambient temperature. However, daily mean values of sweating rate, skin and body surface temperature measured on seven regions of the camel body did not significantly differ. The variation in body surface temperature compared to the variation in skin temperature was higher in the hump compared to the axillary and flank regions, indicating the significance of camel's fur in p...
Source: Animal Science Journal - January 13, 2012 Category: Zoology Authors: Khalid A. ABDOUN, Emad M. SAMARA, Aly B. OKAB, Ahmed A. AL‐HAIDARY Source Type: research
Effect of iodine, selenium and cobalt rumen boluses given to dry dairy cows on the immunoglobulin and thyroid hormone status of calvesEmail this article to a colleague.
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The objective was to determine the effect of rumen boluses containing 6800 mg iodine, 1000 mg selenium and 1000 mg cobalt given to dry dairy cows on the efficiency of colostral immunoglobulin G (IgG) absorption in calves. Thirteen cows received the bolus approximately 58 days before calving. A further 12 cows received no bolus and were used as controls. The cows were housed as one group. Calves were prevented from suckling for the first 24 h of life, and were given three feeds of a fixed quantity of colostrum. At 24 h, the average plasma concentrations of IgG in the calves were 15.5 and 13.4 g/L for the contr...
Source: Animal Science Journal - January 13, 2012 Category: Zoology Authors: Michael ROSESam PEARSONTom CRATCHLEY Source Type: research
