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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 23.

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RBM19 is essential for preimplantation development in the mouseEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: The data indicate that RBM19 is essential for preimplantation development, highlighting the importance of de novo nucleologenesis during this critical developmental stage.
Source: BMC Developmental Biology - Latest articles - December 16, 2008 Category: Zoology Authors: Jian Zhang, Amber J. Tomasini and Alan N. Mayer Source Type: journals

Effect of Elevated Ammonia on Tissue Nitrogen Metabolites in the Ureotelic Gulf Toadfish (Opsanus beta) and the Ammoniotelic Midshipman (Porichthys notatus)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Physiological and Biochemical Zoology, Volume 82, Issue 4, Page 345-352, July/August 2009. Abstract We investigated possible biochemical pathways explaining extreme ammonia tolerance by the gulf toadfish and specifically tested the prediction that the gulf toadfish Opsanus beta is more tolerant than the plainfin midshipman Porichthys notatus, two confamilial species, because it reverses brain glutamine accumulation during high ammonia exposure. This prediction stems from previous studies demonstrating that gulf toadfish produce urea from glutamine, a pathway not present in the ammoniotelic midshipman. Our results sho...
Source: Physiological and Biochemical Zoology - December 10, 2008 Category: Zoology Tags: article Articles Source Type: journals

Odontoblasts in the dental pulp immune response.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Recent studies have demonstrated that human dental pulp cells sense pathogens and elicit innate and/or adaptive immunity. Particular attention has been paid to odontoblasts that are situated at the pulp-dentin interface and constitute the first line of defense to cariogenic bacteria entering dentin after enamel disruption. In this review, recent in vitro and in vivo data suggesting that odontoblasts initiate immune/inflammatory events within the dental pulp in response to cariogenic bacteria are discussed. These data include sensing of pathogens by Toll-like receptors (TLRs), production of chemokines upon cell stimulat...
Source: Journal of Experimental Zoology. Part B. Molecular and Developmental Evolution - December 9, 2008 Category: Zoology Authors: Farges JC, Keller JF, Carrouel F, Durand SH, Romeas A, Bleicher F, Lebecque S, Staquet MJ Tags: J Exp Zoolog B Mol Dev Evol Source Type: journals

Human dental pulp stem cells: from biology to clinical applications.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Dental pulp stem cells (DPSCs) can be found within the "cell rich zone" of dental pulp. Their embryonic origin, from neural crests, explains their multipotency. Up to now, two groups have studied these cells extensively, albeit with different results. One group claims that these cells produce a "dentin-like tissue", whereas the other research group has demonstrated that these cells are capable of producing bone, both in vitro and in vivo. In addition, it has been reported that these cells can be easily cryopreserved and stored for long periods of time and still retain their multipotency and bone-producing capacity. Mor...
Source: Journal of Experimental Zoology. Part B. Molecular and Developmental Evolution - December 8, 2008 Category: Zoology Authors: d'Aquino R, De Rosa A, Laino G, Caruso F, Guida L, Rullo R, Checchi V, Laino L, Tirino V, Papaccio G Tags: J Exp Zoolog B Mol Dev Evol Source Type: journals

Snail phenotypic variation and stress proteins: do different heat response strategies contribute to Waddington's widget in field populations?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
On the basis of studies with laboratory strains of Drosophila and Arabidopsis, it has been hypothesized that potential buffers to the expression of phenotypic morphological variation, such as Hsp90 and possibly Hsp70, represent important components of Waddington's widget, which may confer capacitive evolution. As studies on field populations of living organisms to test this hypothesis are lacking, we tested whether a heat response strategy involving high stress protein levels is associated with low morphological variation and vice versa, using four natural populations of Mediterranean pulmonate snails. In response to 8...
Source: Journal of Experimental Zoology. Part B. Molecular and Developmental Evolution - December 8, 2008 Category: Zoology Authors: Köhler HR, Lazzara R, Dittbrenner N, Capowiez Y, Mazzia C, Triebskorn R Tags: J Exp Zoolog B Mol Dev Evol Source Type: journals

Determinants of seasonal variation in activity patterns of mouflonEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
G. Bourgoin, M. Garel, B. Van Moorter, D. Dubray, D. Maillard, E. Marty, and J.-M. Gaillard - Balancing energetic requirements is a complex process governed by the current condition of the animal, its physiological state, and by the local environment. In response...
Source: Canadian Journal of Zoology - December 7, 2008 Category: Zoology Source Type: journals

Reduced parasite infestation in urban Eurasian blackbirds (Turdus merula): a factor favoring urbanization?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Dirk Geue and Jesko Partecke - Humans nowadays dramatically alter environmental and ecological conditions worldwide. One of the most extreme forms of anthropogenic land-use alteration is urbanization. Animals thriving in urban...
Source: Canadian Journal of Zoology - December 7, 2008 Category: Zoology Source Type: journals

Effect of cyclic and declining food supply on great grey owls in boreal SwedenEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this study of 35 years of data, we examine the short-term (cyclic) and long-term relationship between breeding success of great grey owls (Strix nebulosa...
Source: Canadian Journal of Zoology - December 7, 2008 Category: Zoology Source Type: journals

Acute phase nematode infection reduces resting metabolic rate in both protein-sufficient and protein-deficient miceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objective of this study was to investigate whether protein deficiency concurrent with the acute phase of infection with the murine nematode Heligmosomoides bakeri (Durette-Desset,...
Source: Canadian Journal of Zoology - December 7, 2008 Category: Zoology Source Type: journals

Author Index / Index des auteursEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
- Read article abstract for details.
Source: Canadian Journal of Zoology - December 7, 2008 Category: Zoology Source Type: journals

Contents / SommaireEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
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Source: Canadian Journal of Zoology - December 7, 2008 Category: Zoology Source Type: journals

Contribution of Jean-Victor Ruch to the study of odontogenesis: a unique story.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
PMID: 19061225 [PubMed - as supplied by publisher]
Source: Journal of Experimental Zoology. Part B. Molecular and Developmental Evolution - December 4, 2008 Category: Zoology Authors: Lesot H, Magloire H Tags: J Exp Zoolog B Mol Dev Evol Source Type: journals

Facilitative interactions between the Eurasian badger (Meles meles), the red fox (Vulpes vulpes), and the invasive raccoon dog (Nyctereutes procyonoides) in Białowieża Primeval Forest, PolandEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
R. Kowalczyk, B. Jędrzejewska, A. Zalewski, and W. Jędrzejewski - Based on radio-tracking of Eurasian badgers (Meles meles (L., 1758)), red foxes (Vulpes vulpes (L., 1758)), and raccoon dogs (Nyctereutes procyonoides (Gray, 1834)) and observations...
Source: Canadian Journal of Zoology - December 3, 2008 Category: Zoology Source Type: journals

Demography of the lizard Sceloporus grammicus: exploring temporal variation in population dynamicsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
J. J. Zúñiga-Vega, F. R. Méndez-de la Cruz, and O. Cuellar - We conducted a 5 year demographic study in one population of the viviparous lizard Sceloporus grammicus Wiegmann, 1828 in central México. The population was structured in...
Source: Canadian Journal of Zoology - December 3, 2008 Category: Zoology Source Type: journals

Development of a nude mouse model for the study of antlerogenesis-mechanism of tissue interactions and ossification pathway.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In a previous study (Li et al., 2001. J Exp Zool 290:18-30) a nude mouse model was established to investigate deer antler development. In that study we found nude mice could support the singularly implanted antlerogenic periosteum (AP) to form pedicle-like, but not antler-like, bony protuberances. To further develop the model and at the same time to use the updated model for the investigation of antler formation, three experiments were carried out in this study. The results showed that (1) antler-like protuberances were successfully induced on the nude mouse heads via subcutaneous co-transplantation of AP and deer skin...
Source: Journal of Experimental Zoology. Part B. Molecular and Developmental Evolution - December 2, 2008 Category: Zoology Authors: Li C, Gao X, Yang F, Martin SK, Haines SR, Deng X, Schofield J, Stanton JA Tags: J Exp Zoolog B Mol Dev Evol Source Type: journals

An evolutionary model for the origin of modularity in a complex gene network.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Scale-free cellular networks are organized into a complex topology by massive interactions (links) between nodes, which can be typically characterized by a power-law degree. In contrast, almost all cellular networks show the feature of modularity. The popular BA model (Barabasi and Albert) demonstrated the origin of scale-free property by the attachment preference, but not for the origin of modularity. We propose a BBA model (Biological BA) by introducing the random link-loss mechanism under the original BA model, showing that scale-free and modularity can emerge as a derived property of the BBA model. Data analysis ha...
Source: Journal of Experimental Zoology. Part B. Molecular and Developmental Evolution - December 2, 2008 Category: Zoology Authors: Gu X Tags: J Exp Zoolog B Mol Dev Evol Source Type: journals

Dietary supplementation with S-adenosyl methionine was associated with protracted reduction of seizures in a line of transgenic mice.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Transgenic mice, although useful for analyses of gene function, can present unanticipated phenotypic manifestations, including behavioral problems, that may not be directly associated with the gene of interest but rather due to the complex interplay inherent in genomes. These unexpected events can present unique insight into gene function, leading to an advantage in some situations, yet in others can confound interpretation and compromise usefulness of the transgenic line. Here we document that short-term supplementation with S-adenosyl methionine (SAM)--a nutriceutical known to regulate neurotransmitter levels, improv...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Perry S, Levasseur J, Chan A, Shea TB Tags: Comp Med Source Type: journals

Effects of maternal and infant characteristics on birth weight and gestation length in a colony of rhesus macaques (Macaca mulatta).Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A retrospective study using maternal and birth statistics from an open, captive rhesus macaque colony was done to determine the effects of parity, exposure to simian retrovirus (SRV), housing, maternal parity, and maternal birth weight on infant birth weight, viability and gestation length. Retrospective colony statistics for a 23-y period indicated that birth weight, but not gestation length, differed between genders. Adjusted mean birth weights were higher in nonviable infants. Mothers positive for SRV had shorter gestations, but SRV exposure did not affect neonatal birth weights or viability. Infants born in cages h...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Hopper KJ, Capozzi DK, Newsome JT Tags: Comp Med Source Type: journals

Can gender differences be evaluated in a rhesus macaque (Macaca mulatta) model of focal cerebral ischemia?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This report is the first to compare cerebral ischemic outcomes in female and male rhesus macaques. The female rhesus macaque ischemic stroke model could be used after rodent studies to provide preclinical data for clinical trials in women. PMID: 19149416 [PubMed - in process]
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Murphy SJ, Kirsch JR, Zhang W, Grafe MR, West GA, del Zoppo GJ, Traystman RJ, Hum PD Tags: Comp Med Source Type: journals

Bama miniature pigs (Sus scrofa domestica) as a model for drug evaluation for humans: comparison of in vitro metabolism and in vivo pharmacokinetics of lovastatin.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objective of this study was to demonstrate that Bama miniature pigs are a suitable experimental animal model for the evaluation of drugs for man. To this end, in vitro lovastatin metabolism at the minipig liver microsomal level and in vivo pharmacokinetics were studied. Results were compared with those obtained from humans. Our data indicate that the main metabolites and enzyme kinetic parameters of lovastatin metabolism are similar in pigs and humans. Triacetyloleandomycin, a specific inhibitor of human CYP3A4, inhibited the metabolism of lovastatin in pig and human liver microsomes. In addition, the pharmacokinetic p...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Liu Y, Zeng BH, Shang HT, Cen YY, Wei H Tags: Comp Med Source Type: journals

The adult Göttingen minipig as a model for chronic heart failure after myocardial infarction: focus on cardiovascular imaging and regenerative therapies.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The adult Göttingen minipig as a model for chronic heart failure after myocardial infarction: focus on cardiovascular imaging and regenerative therapies. Comp Med. 2008 Dec;58(6):568-79 Authors: Schuleri KH, Boyle AJ, Centola M, Amado LC, Evers R, Zimmet JM, Evers KS, Ostbye KM, Scorpio DG, Hare JM, Lardo AC Porcine models have become increasingly popular in cardiovascular research. The standard farm pig rapidly increases in body weight and size, potentially confounding serial measurements of cardiac function and morphology. We developed an adult porcine model that does not show physiologic increases in he...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Schuleri KH, Boyle AJ, Centola M, Amado LC, Evers R, Zimmet JM, Evers KS, Ostbye KM, Scorpio DG, Hare JM, Lardo AC Tags: Comp Med Source Type: journals

Phenotypic characterization of the Komeda miniature rat Ishikawa, an animal model of dwarfism caused by a mutation in Prkg2.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this study, we characterized the phenotype of the KMI strain, particularly growth traits, craniofacial measurements, and organ weights. The homozygous mutant (mri/mri) animals were approximately 70% to 80% of the size of normal, heterozygous (mri/+) animals in regard to body length, weight, and naso-occipital length of the calvarium, and the retroperitoneal fat of mri/mri rats was reduced greatly. In addition, among progeny of the (BNxKMI-mri/mri)F1xKMI-mri/mri backcross, animals with the KMI phenotype (mri/mri) were easily distinguished from those showing the wild-type phenotype (mri/+) by using growth traits such as b...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Tsuchida A, Yokoi N, Namae M, Fuse M, Masuyama T, Sasaki M, Kawazu S, Komeda K Tags: Comp Med Source Type: journals

The petit rat (pet/pet), a new semilethal mutant dwarf rat with thymic and testicular anomalies.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The petit rat (pet/pet) is a recently discovered semilethal mutant dwarf. The neonatal pet/pet rats had a low body weight and small thymus and testis. During the first 3 d after birth, 50% of the male and 80% of the female pet/pet pups were lost or found dead. Surviving pet/pet rats showed marked retardation of postnatal growth, and their body weights were 41% (female rats) and 32% (male rats) of those of normal rats at the adult stage. The pet/pet rats exhibited proportional dwarfism, and their longitudinal bones were shorter than those of controls without skeletal malformations. Most organs of male pet/pet rats, espe...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Chiba J, Suzuki K, Suzuki H Tags: Comp Med Source Type: journals

Quantitative tomography of early-onset spontaneous AA amyloidosis in interleukin 6 transgenic mice.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Mice that constitutively express the human interleukin 6 (huIL6) protein from a heritable transgene (H2-L(d)-IL-6) express high levels of the acute-phase reactant, serum amyloid protein A, a liver-derived apoprotein of high-density lipoprotein that is the precursor of AA amyloid. Typically at approximately 5 mo of age B6(C)- Tg(H2-L(d)-IL-6)Kish (H2/huIL-6) animals begin to develop splenic deposits of AA amyloid, which progress to involve the liver, kidney, and vasculature, ultimately resulting in death due to severe systemic AA amyloidosis at 8 to 9 mo of age. These mice provide a robust model in which to study novel ...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Wall JS, Richey T, Allen A, Donnell R, Kennel SJ, Solomon A Tags: Comp Med Source Type: journals

Helicobacter typhlonius and Helicobacter rodentium differentially affect the severity of colon inflammation and inflammation-associated neoplasia in IL10-deficient mice.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Infection with Helicobacter species is endemic in many animal facilities and may alter the penetrance of inflammatory bowel disease (IBD) phenotypes. However, little is known about the relative pathogenicity of H. typhlonius, H. rodentium, and combined infection in IBD models. We infected adult and neonatal IL10-/- mice with H. typhlonius, H. rodentium, or both bacteria. The severity of IBD and incidence of inflammation-associated colonic neoplasia were assessed in the presence and absence of antiHelicobacter therapy. Infected IL10-/- mice developed IBD with severity of noninfected (minimal to no inflammation) < H. ...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Chichlowski M, Sharp JM, Vanderford DA, Myles MH, Hale LP Tags: Comp Med Source Type: journals

Murine norovirus: an intercurrent variable in a mouse model of bacteria-induced inflammatory bowel disease.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Murine norovirus (MNV) has recently been recognized as a widely prevalent viral pathogen in mouse colonies and causes disease and mortality in mice with impaired innate immunity. We tested the hypothesis that MNV infection would alter disease course and immune responses in mice with inflammatory bowel disease (IBD). FVB.129P2-Abcb1a(tm1Bor) N7 (Mdr1a-/-) mice develop spontaneous IBD that is accelerated by infection with Helicobacter bilis. As compared with controls, Mdr1a-/- mice coinfected with MNV4 and H. bilis showed greater weight loss and IBD scores indicative of severe colitis, demonstrating that MNV4 can modulat...
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Lencioni KC, Seamons A, Treuting PM, Maggio-Price L, Brabb T Tags: Comp Med Source Type: journals

Peer and editorial review of submitted manuscripts.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
PMID: 19149408 [PubMed - in process]
Source: Comparative Medicine - December 1, 2008 Category: Zoology Authors: Murphy SJ Tags: Comp Med Source Type: journals

A new species of photosymbiotic ascidian from the ryukyu archipelago, Japan, with remarks on the stability of stigma number in photosymbiotic diplosoma species.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract Diplosoma variostigmatum sp. nov. is a photosymbiotic ascidian in the family Didemnidae. This species is characterized by the unique pattern of its stigma number, which is often variable within the same zooid, as well as within the same colony. The total number of stigmata per half branchial sac varies from 22 (five, six, six, and five stigmata from the top to bottom rows) to 27 (seven, seven, seven, and six). In contrast, the stigma patterns are constant in D. ooru , D. simile , D. simileguwa , and D. virens . Thus, the stigma number and its stability (or variability) seem to be important as characters for th...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Hirose E, Oka AT Tags: Zoolog Sci Source Type: journals

Potential of DNA sequences to identify zoanthids (cnidaria: zoantharia).Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract The order Zoantharia is known for its chaotic taxonomy and difficult morphological identification. One method that potentially could help for examining such troublesome taxa is DNA barcoding, which identifies species using standard molecular markers. The mitochondrial cytochrome oxidase subunit I (COI) has been utilized to great success in groups such as birds and insects; however, its applicability in many other groups is controversial. Recently, some studies have suggested that barcoding is not applicable to anthozoans. Here, we examine the use of COI and mitochondrial 16S ribosomal DNA for zoanthid identifi...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Sinniger F, Reimer JD, Pawlowski J Tags: Zoolog Sci Source Type: journals

Direct Evidence That Extracellular Giant Hemoglobin is Produced in Chloragogen Tissues in a Beard Worm, Oligobrachia mashikoi (Frenulata, Siboglinidae, Annelida).Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract In Oligobrachia mashikoi , a mouthless and gutless polychaete known as a beard worm, sites of production of extra-cellular giant hemoglobin were examined with whole-mount in-situ hybridization and semi-quantitative RT-PCR. An RNA probe was prepared from mRNA of the A2-globin subunit. Clear signals were obtained from a peritoneal membrane covering the trophosome in the posterior body in all seven individuals examined in this study. In addition, weak signals were observed in the peritoneal membrane covering tissues in the middle part of the body in some individuals. Furthermore, in one individual, signals were o...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Nakahama S, Nakagawa T, Kanemori M, Fukumori Y, Sasayama Y Tags: Zoolog Sci Source Type: journals

Cranial Variation in the Pantropical Spotted Dolphin, Stenella attenuata , in the Pacific Ocean.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study revealed significant sexual dimorphism in the dolphin skulls. Differences between the genders were mostly recorded in the rostrum and braincase, which are wider and more robust in males. This sexual variation was interpreted in terms of differences in behavioral and life-history strategies between genders. Geographical variation among populations of the eastern tropical Pacific (ETP), Japan, and Taiwan was also significant, with different sexual patterns. While no clear trend in geographical variation was detected in males, there was a positive relationship in females between morphological differences and geogra...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Yao CJ, Yamada TK, Chen YJ, Chou LS Tags: Zoolog Sci Source Type: journals

Isolation of novel isoforms of estrogen receptor genes from Xenopus gonad and brain.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract We isolated four variants of ER alpha mRNA, two each from the brain and gonad of the Xenopus embryo (brain, bER alpha 1 and bER alpha 2; gonad, gER alpha 1 and gER alpha 2). The N-terminal-domain of ER alpha differed between the brain and gonad. While the C-terminal region downstream of the DNA-binding domain of ER alpha differed between ER alpha 1 and ER alpha 2 in both the brain and gonad, each of ER alpha 1 and ER alpha 2 contained the same sequence sets (bER alpha 1 and gER alpha 1; bER alpha 2 and gER alpha 2) between the brain and gonad. Both bER alpha 1 and gER alpha 1 contained the same full-length, C-...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Iwabuchi J, Arai K, Miyata S Tags: Zoolog Sci Source Type: journals

Local variation in diet composition of the Japanese serow during winter.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract We investigated local geographical variation in the plant composition and quality (crude protein) of the diet of the Japanese serow ( Capricornis crispus ) by analyzing rumen contents. We collected the rumen contents from 111 Japanese serows culled for pest control between January and March 1997 in Shizuoka Prefecture, central Japan. The composition of the diet, characterized by a high proportion of browse (65.2%), including green plant leaves (55.3%), confirmed that the Japanese serow is a typical browser, at least in winter. Although the composition of the diet varied geographically even within Shizuoka Pref...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Jiang Z, Torii H, Takatsuki S, Ohba T Tags: Zoolog Sci Source Type: journals

Fluorescent pigment distinguishes between sibling snail species.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract Traditional taxonomy of shell-bearing molluscs does not generally use soft-body coloration. However, the land snails Bradybaena pellucida and B. similaris have been distinguished only on the basis of the color of the soft-body visible through the shell. Thus, the taxonomic status of the two species has traditionally been questionable. We found that dense spots of pigments embedded in the dorsal mantle are responsible for the yellow coloration of B. pellucida . Similar spots in B. similaris are white and less densely aggregated in whorls further from the apex, and the brown color of the hepatopancreas is visibl...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Seki K, Wiwegweaw A, Asami T Tags: Zoolog Sci Source Type: journals

Algal Symbionts in the Larval Tunic Lamellae of the Colonial Ascidian Lissoclinum timorense (Ascidiacea, Didemnidae).Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract Lissoclinum timorense is a colonial ascidian that harbors the prokaryotic alga Prochloron . The algal photosymbionts adhere to the lamellae of the tunic on the posterior half of the trunk of larvae, which aggregate in the common cloacal cavity of the mother colony. Bead-adhesion tests demonstrated that the lamellae are adhesive, whereas the anterior half of the larval trunk is not. The anterior half is covered with a thin layer of outer tunic, which probably prevents Prochloron cells from attaching and interfering with sensory receptors and adhesive organs. The larval structures and the mode of algal transmiss...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Hirose E, Nakabayashi S Tags: Zoolog Sci Source Type: journals

Role of the Yellow Spot Around the Urogenital Opening of Female Mosquitofish ( Gambusia affinis ) as a Cue for Copulation.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract Males of the viviparous teleost fish Gambusia affinis copulate with females by using a specialized anal fin, or gonopodium. When female G. affinis were placed in a shallow transparent tank which was then floated on the surface of a larger aquarium housing male G. affinis , the males frequently attempted to copulate with females housed in the smaller quarantine tank. This copulatory behavior in male G. affinis was only observed to be elicited by visual stimuli; female G. affinis have a yellow spot and black anal spots around their urogenital opening. To investigate the function of the yellow spot of the female,...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Kodama I, Yamanaka A, Endo K, Koya Y Tags: Zoolog Sci Source Type: journals

Altricial development in subsocial wood-feeding cockroaches.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract Species in the wood-feeding genus Salganea within the cockroach subfamily Panesthiinae (Blaberidae) typically live in biparental families; their first instars suffer high mortality when removed from adults, and in at least one species, adults are known to feed neonates on oral liquids. In the closely related gregarious wood-feeding genus Panesthia , no parental interaction with offspring is known. We compared the external morphology of first instars of these two genera and found that eye development and cuticular pigmentation at hatching are correlated with social structure. First instars of Panesthia have a d...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Nalepa CA, Maekawa K, Shimada K, Saito Y, Arellano C, Matsumoto T Tags: Zoolog Sci Source Type: journals

Diverse systems for pheromone perception: multiple receptor families in two olfactory systems.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Abstract Traditionally, the olfactory epithelium is considered to recognize conventional odors, while the vomeronasal organ detects pheromones. However, recent advances suggest that vertebrate pheromones can also be detected by the olfactory epithelium. In the vomeronasal organ and the olfactory epithelium, structurally distinct multiple receptor families are expressed. In rodents, two of these receptor families, V1R and V2R, are expressed specifically in the vomeronasal organ and detect pheromones and pheromone candidates. A newly isolated trace amine-associated receptor detects some of the putative pheromones in the ...
Source: Zoological Science - December 1, 2008 Category: Zoology Authors: Hagino-Yamagishi K Tags: Zoolog Sci Source Type: journals

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Authors: PMID: 19267643 [PubMed - in process]
Source: Zoological Science - December 1, 2008 Category: Zoology Tags: Zoolog Sci Source Type: journals

Acknowledgments.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Authors: PMID: 19267642 [PubMed - in process]
Source: Zoological Science - December 1, 2008 Category: Zoology Tags: Zoolog Sci Source Type: journals

The bone histology of osteoderms in temnospondyl amphibians and in the chroniosuchian BystrowiellaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Witzmann, F. and Soler-Gijón, R. 2008. The bone histology of osteoderms in temnospondyl amphibians and in the chroniosuchian Bystrowiella. [mdash]Acta Zoologica (Stockholm) 00: 000[ndash]000 Bone histology of osteoderms in the armoured temnospondyl Peltobatrachus, plagiosaurids (Gerrothorax, Plagiosuchus) and dissorophids (Aspidosaurus, Cacops, Platyhystrix), as well as in the chroniosuchian Bystrowiella, is studied. The massive osteoderms of Peltobatrachus and Gerrothorax consist of homogeneous parallel-fibred bone, whereas in dissorophids, a lightly built, trabecular middle region is mantled by a thin cortex that is com...
Source: Acta Zoologica - November 29, 2008 Category: Zoology Authors: Florian Witzmann, Rodrigo Soler-Gijón Source Type: journals

Editorial.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
PMID: 19046628 [PubMed - as supplied by publisher]
Source: Zoology - November 29, 2008 Category: Zoology Authors: Bosch TC, Gorb S, Pflüger HJ, Summers A Tags: Zoology (Jena) Source Type: journals

Clutch and egg size of the tropical lizard Tropidurus torquatus (Tropiduridae) along its geographic range in coastal eastern BrazilEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
M. C. Kiefer, M. Van Sluys, and C. F.D. Rocha - The tropidurid lizard Tropidurus torquatus (Wied, 1820) has a set of populations inhabiting coastal sand dune habitats (“restinga”) along the eastern Brazilian coast. Despite its...
Source: Canadian Journal of Zoology - November 27, 2008 Category: Zoology Source Type: journals

The skull of Vanzosaura rubricauda (Squamata: Gymnophthalmidae)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Guerra, C. and Montero, R. 2008. The skull of Vanzosaura rubricauda (Squamata: Gymnophthalmidae). [mdash]Acta Zoologica (Stockholm) 89: 000[ndash]000. A detailed description of the cranial osteology and chondrocranium of Vanzosaura rubricauda is made based both on articulated and partially disarticulated material of dry skeletons and cleared and stained specimens, and is compared with other previously studied gymnophthalmids. Some features of Vanzosaura are interesting, such as the reduction of the supratemporal fenestrae, that may reflect a process of miniaturization, and the fusion of the occipital bones in a single oto-...
Source: Acta Zoologica - November 27, 2008 Category: Zoology Authors: Cecilia Guerra, Ricardo Montero Source Type: journals

Gap junctions in the ovary of Drosophila melanogaster: localization of innexins 1, 2, 3 and 4 and evidence for intercellular communication via innexin-2 containing channelsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: Our results suggest that all analyzed innexins are involved in the formation of gap junctions in the ovary. While innexins 2 and 3 are colocalized between soma cells, innexins 2 and 4 are colocalized between soma and germ-line cells. Innexin 2 is participating in cell-cell communication via hemichannels residing in the oolemma. It is obvious that gap-junctional communication between germ-line and soma cells is essential for several processes during oogenesis.
Source: BMC Developmental Biology - Latest articles - November 27, 2008 Category: Zoology Authors: Johannes Bohrmann and Jennifer Zimmermann Source Type: journals

Cell cycle and apoptosis in normal and cloned bovine near-term placentae.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study compared tissue growth and apoptosis by flow cytometry in the cell population found at distinct placental regions (central region of placentomes, </=1-cm microplacentomes and the interplacentomal region) between normal and cloned near-term bovine pregnancies. After a morphological comparison between regions and groups (controls vs. clones), a lesser proportion of diploid to tetraploid cells was observed in the central region of placentomes and in microplacentomes from cloned-derived pregnancies. In addition, cloned animals had a fewer apoptotic cells in the central region of the placentome and in interplacent...
Source: Animal Reproduction Science - November 27, 2008 Category: Zoology Authors: Rici RE, Facciotti PR, Ambrósio CE, Maria DA, Jr JR, Bertolini M, Miglino MA Tags: Anim Reprod Sci Source Type: journals

Telomere length change in European sea bass (Dicentrarchus labrax)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
T. Horn, N. J. Gemmell, B. C. Robertson, C. R. Bridges - Volume 56(3)
Source: Australian Journal of Zoology - November 26, 2008 Category: Zoology Source Type: journals

Spatial ecology of the giant burrowing frog (Heleioporus australiacus): implications for conservation prescriptionsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Trent D. Penman, Frank L. Lemckert, Michael J. Mahony - Volume 56(3)
Source: Australian Journal of Zoology - November 26, 2008 Category: Zoology Source Type: journals

Solo and duet calling in the pheasant coucal: sex and individual call differences in a nesting cuckoo with reversed size dimorphismEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Golo Maurer, Claire Smith, Marc Süsser, Robert D. Magrath - Volume 56(3)
Source: Australian Journal of Zoology - November 26, 2008 Category: Zoology Source Type: journals

Phylogenetic relationships of the heath dragons (Rankinia adelaidensis and R. parviceps) from the south-western Australian biodiversity hotspotEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Jane Melville, Luke P. Shoo, Paul Doughty - Volume 56(3)
Source: Australian Journal of Zoology - November 26, 2008 Category: Zoology Source Type: journals

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