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

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Stress and reproduction in Boiga irregularis with notes on the ultrastructure of the sexual segment of the kidney in squamatesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
D. S. Siegel, R. D. Aldridge, C. S. Clark, E. H. Poldemann, and K. M. Gribbins - The reproductive tract of wild-caught male Boiga irregularis (Merrem, 1802) (Brown Treesnake) and the changes that result in these tissues from captivity are described. Wild-caught... (Source: Canadian Journal of Zoology)
Source: Canadian Journal of Zoology - November 21, 2009 Category: Zoology Source Type: journals

Physiological responses of postprandial red rock crabs (Cancer productus) during emersionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
I. J. McGaw, D. L. Curtis, J. D. Ede, K. J. Ong, F. van Breukelen, and G. G. Goss - The physiological responses of unfed and postprandial red rock crabs (Cancer productus J.W. Randal, 1840) were investigated during periods of emersion. During aerial exposure, oxygen... (Source: Canadian Journal of Zoology)
Source: Canadian Journal of Zoology - November 20, 2009 Category: Zoology Source Type: journals

An analysis of levels of infectious pancreatic necrosis virus in Atlantic salmon, Salmo salar L., broodstock in Scotland between 1990–2002Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Throughout this study period the prevalence of infectious pancreatic necrosis virus (IPNV) in Scottish farmed Atlantic salmon was high in the marine environment but relatively low in fresh water. In order to minimize the risk of vertical transmission of infection from parent to progeny, all IPNV infected broodstock populations had to undergo testing of all fish for the virus at the time of stripping and eggs from positive parents were destroyed. Between 1990 and 2002 over 68 000 Atlantic salmon broodfish were individually screened for IPNV by cell culture isolation and enzyme linked immunosorbent assay. Generalized linear ...
Source: Journal of Fish Diseases - November 20, 2009 Category: Zoology Authors: E S Munro, C P Millar, T S Hastings Source Type: journals

Histology and ultrastructure of the salivary glands and salivary pumps in the scorpionfly Panorpa obtusa (Mecoptera: Panorpidae)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Liu, S. and Hua, B. 2009. Histology and ultrastructure of the salivary glands and salivary pumps in the scorpionfly Panorpa obtusa (Mecoptera: Panorpidae). [mdash]Acta Zoologica (Stockholm) xx:xx[ndash]xx The morphology, histology and ultrastructure of the salivary glands and salivary pumps in the scorpionfly Panorpa obtusaCheng 1949 were investigated using light microscopy and scanning and transmission electron microscopy. The salivary glands display a distinct sexual dimorphism. The female has only two small sac-like glands located in the prothorax, while the male possesses six long tubular glands extending into the sixt...
Source: Acta Zoologica - November 20, 2009 Category: Zoology Authors: Shuyu Liu, Baozhen Hua Source Type: journals

The Use of Torpor in Reproductive Female Hemprich’s Long‐Eared Bats (Otonycteris hemprichii)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Physiological and Biochemical Zoology, Volume 0, Issue 0, Page 000, Latest Articles. Abstract We investigated the patterns of torpor use and body temperature (Tb) in reproductive Hemprich’s long‐eared bats (Otonycteris hemprichii; body mass ∼20 g) in the central Negev Desert highlands. We hypothesized that Tb regulation in female O. hemprichii during reproduction is shaped by a trade‐off between the energy and temperature requirements of embryo and pup growth and the mother’s own need to use torpor and passive rewarming to save energy and water. We predicted that patterns of torpor use change during pregnan...
Source: Physiological and Biochemical Zoology - November 19, 2009 Category: Zoology Tags: article Source Type: journals

Demographic differences among populations of Northern Map Turtles (Graptemys geographica) in intact and fragmented sitesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We examined demographic differences between populations of Northern Map Turtles, Graptemys geographica (Le Sueur, 1817),... (Source: Canadian Journal of Zoology)
Source: Canadian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

Responding to spatial and temporal variations in predation risk: space use of a game species in a changing landscape of fearEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
V. Tolon, S. Dray, A. Loison, A. Zeileis, C. Fischer, and E. Baubet - Predators generate a “landscape of fear” within which prey can minimize the risk of predation by selecting low-risk areas. Depending on the spatial structure of... (Source: Canadian Journal of Zoology)
Source: Canadian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

Modeling haul-out behavior of walruses in Bering Sea iceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Mark S. Udevitz, Chadwick V. Jay, Anthony S. Fischbach, and Joel L. Garlich-Miller - Understanding haul-out behavior of ice-associated pinnipeds is essential for designing and interpreting population surveys and for assessing effects of potential changes in their ice environments.... (Source: Canadian Journal of Zoology)
Source: Canadian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

The status of taxonomy in Canada and the impact of DNA barcodingEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
L. Packer, J. C. Grixti, R. E. Roughley, and R. Hanner - To assess the recent history of taxonomy in Canada and the impact of DNA barcoding upon the field, we performed a survey of various indicators... (Source: Canadian Journal of Zoology)
Source: Canadian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

Comparative temperature in funnel and pit trapsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Graham G. Thompson, Scott A. Thompson - Volume 57(5) (Source: Australian Journal of Zoology)
Source: Australian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

Phylogeographic patterns in reptiles on the New England Tablelands at the south-western boundary of the McPherson Macleay OverlapEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
D. J. Colgan, D. O'Meally, R. A. Sadlier - Volume 57(5) (Source: Australian Journal of Zoology)
Source: Australian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

Interactions between chuditch (Dasyurus geoffroii) and introduced predators: a reviewEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A. S. Glen, P. J. de Tores, D. R. Sutherland, K. D. Morris - Volume 57(5) (Source: Australian Journal of Zoology)
Source: Australian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

Do bare-nosed wombat (Vombatus ursinus) mounds influence terrestrial macroinvertebrate assemblages in agricultural riparian zones?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Philip Borchard, Ian A. Wright, Clare McArthur - Volume 57(5) (Source: Australian Journal of Zoology)
Source: Australian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

A three-dimensional geometric morphometric analysis of variation in cranial size and shape in tammar wallaby (Macropus eugenii) populationsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Claire Hadley, Nick Milne, Lincoln H. Schmitt - Volume 57(5) (Source: Australian Journal of Zoology)
Source: Australian Journal of Zoology - November 19, 2009 Category: Zoology Source Type: journals

The cranial morphology of Kayentachelys, an Early Jurassic cryptodire, and the early history of turtlesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Gaffney, E. S. and Jenkins, F. A., Jr. 2099. The cranial morphology of Kayentachelys, an Early Jurassic cryptodire, and the early history of turtles. [mdash] Acta Zoologica (Stockholm) xx: 00[ndash]00. The skull morphology of Kayentachelys aprixGaffney et al., 1987, a turtle from the Early Jurassic Kayenta Fm of northern Arizona, demonstrates the presence of cryptodiran synapomorphies in agreement with Gaffney et al. (1987, 1991, 2007), and contrary to the conclusions of Sterli and Joyce (2007), Joyce (2007), Sterli (2008), and Anquetin et al. (2008). Specific characters found in Kayentachelys and diagnostic of cryptodires...
Source: Acta Zoologica - November 19, 2009 Category: Zoology Authors: Eugene S. Gaffney, Farish A. Jenkins Jr Source Type: journals

Foregut ossicles morphology and feeding of the freshwater anomuran crab Aegla uruguayana (Decapoda, Aeglidae)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Williner, V. 2009. Foregut ossicles morphology and feeding of the freshwater anomuran crab Aegla uruguayana (Decapoda, Aeglidae) [mdash]Acta Zoologica (Stockholm) xx: 00[ndash]00. The acquisition and processing of food is critical to animal survival and reproductive success. This work describes the foregut ossicles of Aegla uruguayana, which have been proposed to impart trophic characteristics. In addition, stomach contents were analysed using Index of Relative Importance and Weighted Result Index to characterize the diet. The Pearre index was applied to analyse trophic selectivity. We found A. uruguayana has a morphologic...
Source: Acta Zoologica - November 19, 2009 Category: Zoology Authors: Veronica Williner Source Type: journals

Age and Breeding Effort as Sources of Individual Variability in Oxidative Stress Markers in a Bird SpeciesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Physiological and Biochemical Zoology, Volume 0, Issue 0, Page 000, Latest Articles. Abstract Oxidative stress is the imbalance between the production of pro‐oxidant substances and the level of antioxidant defenses, which leads to oxidative damage. It has been proposed that senescence is the result of accumulated oxidative damage throughout life. In birds, the sources of individual variability in oxidative stress are still poorly understood. Among these sources, age, as related to senescence, should be particularly relevant. Furthermore, recent findings suggest that breeding effort may also deeply influence suscept...
Source: Physiological and Biochemical Zoology - November 18, 2009 Category: Zoology Tags: article Source Type: journals

Betaines and Dimethylsulfoniopropionate as Major Osmolytes in Cnidaria with Endosymbiotic DinoflagellatesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Physiological and Biochemical Zoology, Volume 0, Issue 0, Page 000, Latest Articles. Abstract Most marine invertebrates and algae are osmoconformers whose cells accumulate organic osmolytes that provide half or more of cellular osmotic pressure. These solutes are primarily free amino acids and glycine betaine in most invertebrates and small carbohydrates and dimethylsulfoniopropionate (DMSP) in many algae. Corals with endosymbiotic dinoflagellates (Symbiodinium spp.) have been reported to obtain from the symbionts potential organic osmolytes such as glycerol, amino acids, and DMSP. However, corals and their endosymbi...
Source: Physiological and Biochemical Zoology - November 18, 2009 Category: Zoology Tags: article Source Type: journals

Spotting animals in natural scenes: efficiency of humans and monkeys at very low contrasts.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The ability of monkeys to categorize objects in visual stimuli such as natural scenes might rely on sets of low-level visual cues without any underlying conceptual abilities. Using a go/no-go rapid animal/non-animal categorization task with briefly flashed achromatic natural scenes, we show that both human and monkey performance is very robust to large variations of stimulus luminance and contrast. When mean luminance was increased or decreased by 25-50%, accuracy and speed impairments were small. The largest impairment was found at the highest luminance value with monkeys being mainly impaired in accuracy (drop of 6% ...
Source: Animal Cognition - November 18, 2009 Category: Zoology Authors: Macé MJ, Delorme A, Richard G, Fabre-Thorpe M Tags: Anim Cogn Source Type: journals

Establishment, characterization, virus susceptibility and transfection of cell lines from cobia, Rachycentron canadum (L.), brain and finEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Establishment and characterization of two cobia, Rachycentron canadum, cell lines derived from cobia brain (CB) and cobia fin (CF) are described. Caudal fin and brain from juvenile cobia were dissociated for 30 and 10 min, respectively, in phosphate-buffered saline containing 0.25% trypsin at 25 °C. The optimal culture condition for both dissociated cells (primary cell culture) was at 28 °C in Leibovitz-15 medium containing 10% foetal bovine serum. The cells have been sub-cultured at a ratio of 1:2 for more than 160 passages over a period of 3 years. Origin of the cultured cells was verified by comparison of their sequen...
Source: Journal of Fish Diseases - November 18, 2009 Category: Zoology Authors: T-C Cheng, Y-S Lai, I-Y Lin, C-P Wu, S-L Chang, T-I Chen, M-S Su Source Type: journals

Study on bioactive compounds of in vitro cultured Calculus Suis and natural Calculus Bovis1Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of the study was to investigate bioactive compounds of in vitro cultured Calculus Suis and natural Calculus Bovis obtained as valuable by-products from animals used for meat production. The results showed that the components of natural Calculus Bovis were rich in bilirubin and biliverdin and had higher content of essential amino acids. The major amino acids of in vitro cultured Calculus Suis were identified as glycine, alanine, glutamic acid and aspartic acid, and those for natural Calculus Bovis were found to be glutamic acid, aspartic acid, proline, and arginine. The methionine and cysteine contents of precur...
Source: Animal Science Journal - November 18, 2009 Category: Zoology Authors: Tien-Chun WAN, Fu-Yuan CHENG, Yu-Tse LIU, Liang-Chuan LIN, Ryoichi SAKATA Source Type: journals

Effects of central administration of glucagon on feed intake and endocrine responses in sheepEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study was conducted to investigate effects of glucagon intracerebroventricularly administered on feed intake and endocrine changes in sheep. Four male sheep (48[ndash]55 kg BW) were used. The animals were acclimatized to be fed alfalfa hay cubes at 12.00 hour. Human glucagon (40 and 80 µg/0.5 mL) was injected into the lateral ventricle at 12.00 hour. Blood samples were taken every 10 min from 30 min before to 180 min after the glucagon injection. Soon after the injection, the animals were given alfalfa hay cubes, and the amounts of the feed eaten within 2 h were measured. Feed intakes were significantly (P < 0.05) su...
Source: Animal Science Journal - November 18, 2009 Category: Zoology Authors: Yohei KUROSE, Hiroshi KAMISOYAMA, Kazuhisa HONDA, Yoshiyuki AZUMA, Kunio SUGAHARA, Shin HASEGAWA, Shigeki KOBAYASHI Source Type: journals

Oral administration of Lactobacillus plantarum Lq80 and Megasphaera elsdenii iNP-001 induces efficient recovery from mucosal atrophy in the small and the large intestines of weaning pigletsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Weaning causes atrophy of intestinal mucosa and a drop of IgA protection in piglets which increases vulnerability to pathogenic infections. Probiotic lactobacilli may support recovery from such weaning stresses. Butyrate-produce bacteria may support the growth of colonic mucosa. Megasphaera elsdenii, a lactate-utilizing butyrate producer, may help butyrate production particularly when combined with lactobacilli. Weaned piglets (Experiment 1: 20 days old, Experiment 2: 28 days old) were orally dosed once a day with either (L) 1010 (cell/dose) L. plantarum Lq80, or (LM) 1010 (cell/dose) Lq80 with 109 (cell/dose) M. elsdenii ...
Source: Animal Science Journal - November 18, 2009 Category: Zoology Authors: Yoko YOSHIDA, Takamitsu TSUKAHARA, Kazunari USHIDA Source Type: journals

Physiological responses of young cross-bred calves immediately after long-haul road transportation and after one week of habituationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We investigated 10 suckling cross-bred calves (Japanese Black (Wagyu) × Holstein) and collected data on the physiological stress responses of the young calves to long-haul road transportation. All calves were male and 21[ndash]47 days of age. The calves were obtained at a livestock market and were transported from the market to the university in a commercial livestock vehicle. The total haul distance and time were 306.9 km and 7 h, respectively. The calves were deprived of food and water during transportation. Blood samples, electrocardiograms, and rectal temperatures were collected immediately after transportation and af...
Source: Animal Science Journal - November 18, 2009 Category: Zoology Authors: Katsuji UETAKE, Toshie ISHIWATA, Toshio TANAKA, Shusuke SATO Source Type: journals

Subjective value of risky foods for individual domestic chicks: a hierarchical Bayesian model.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
For animals to decide which prey to attack, the gain and delay of the food item must be integrated in a value function. However, the subjective value is not obtained by expected profitability when it is accompanied by risk. To estimate the subjective value, we examined choices in a cross-shaped maze with two colored feeders in domestic chicks. When tested by a reversal in food amount or delay, chicks changed choices similarly in both conditions (experiment 1). We therefore examined risk sensitivity for amount and delay (experiment 2) by supplying one feeder with food of fixed profitability and the alternative feeder wi...
Source: Animal Cognition - November 17, 2009 Category: Zoology Authors: Kawamori A, Matsushima T Tags: Anim Cogn Source Type: journals

Pathogen Dose Infectivity Curves as a Method to Analyze the Distribution of Host Susceptibility: A Quantitative Assessment of Maternal Effects after Food Stress and Pathogen ExposureEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The American Naturalist, Volume 0, Issue 0, Page 000, Latest Articles. Abstract: Stress conditions have been found to change the susceptibility of hosts or their offspring to infection. The usual method of testing at just one parasite dose level does not allow conclusions on the distribution of susceptibility. To better understand the epidemiology and evolution of host‐parasite systems, however, knowledge about the distribution of host susceptibility, the parameters that characterize it, and how it changes in response to environmental conditions is required. We investigated transgenerational effects of different st...
Source: The American Naturalist - November 13, 2009 Category: Zoology Tags: article Source Type: journals

Female Zebra Finches (Taeniopygia guttata) Are Chronically but Not Cumulatively “Anemic” during Repeated Egg Laying in Response to Experimental Nest PredationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this study, we investigated the effect of repeated cycles of egg production in response to experimental nest predation (egg removal) on hematological traits in female zebra finches (Taeniopygia guttata). We predicted that if the negative effect of egg production on hematocrit and hemoglobin concentration was cumulative, with anemia being proportional to reproductive effort, then females laying more clutches, or laying successive clutches without recovery during incubation, would show greater reproductive anemia. In contrast, if females maintain hematocrit and hemoglobin concentration at some minimum functional level ind...
Source: Physiological and Biochemical Zoology - November 13, 2009 Category: Zoology Tags: article Source Type: journals

Parent‐Offspring Conflict and the Evolution of Dispersal DistanceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The American Naturalist, Volume 0, Issue 0, Page 000, Latest Articles. Abstract: Parent‐offspring conflict emerges in many different contexts, but a rarely emphasized perspective is that of space as a resource that is allocated or acquired through dispersal. Early theoretical work has shown that there are different optima in rates of dispersal between parents and offspring. Here we examine this principle when space is explicitly modeled and dispersal is achieved through a dispersal kernel. We find a consistent pattern that selection favors longer dispersal distances under maternal control of dispersal (e.g., matern...
Source: The American Naturalist - November 13, 2009 Category: Zoology Tags: article Source Type: journals

A Porous Convection Model for Grass PatternsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present a new hypothesis that suggests that fluid convection and chill damage to plants could form vegetation patterns with wavelengths ≈1–2 times the plant height. Previous hypotheses for small‐scale vegetation pattern formation relied on a Turing process driven by competition for water, which is thought to occur in large vegetation patterns. Predictions of the new hypothesis were consistent with properties of natural grass patterns in North Carolina, contradicting the Turing hypothesis. These results indicate that similarities in pattern morphology should not be interpreted as implying similarities in the patter...
Source: The American Naturalist - November 13, 2009 Category: Zoology Tags: article ‐Note Source Type: journals

Bonobos, chimpanzees, gorillas, and orang utans use feature and spatial cues in two spatial memory tasks.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Animals commonly use feature and spatial strategies when remembering places of interest such as food sources or hiding places. We conducted three experiments with great apes to investigate strategy preferences and factors that may shape them. In the first experiment, we trained 17 apes to remember 12 different food locations on the floor of their sleeping room. The 12 food locations were associated with one feature cue, so that feature and spatial cues were confounded. In a single test session, we brought the cues into conflict and found that apes, irrespective of species, showed a preference for a feature strategy. In...
Source: Animal Cognition - November 13, 2009 Category: Zoology Authors: Kanngiesser P, Call J Tags: Anim Cogn Source Type: journals

A comparative molecular study of the presence of "Candidatus arthromitus" in the digestive system of rainbow trout, Oncorhynchus mykiss (Walbaum), healthy and affected with rainbow trout gastroenteritisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Observations were made using histopathological techniques in conjunction with a nested polymerase chain reaction (PCR) protocol for the specific detection of "Candidatus arthromitus" on DNA extracted from wax-embedded tissues and fresh digestive contents of rainbow trout. Samples positive for "Candidatus arthromitus" DNA included fish with rainbow trout gastroenteritis (RTGE), clinically normal cohabiting fish, and apparently healthy controls from RTGE positive and RTGE negative sites. The results obtained from the PCR were confirmed by nucleotide sequencing. "Candidatus arthromitus" DNA was found in distal intestine as we...
Source: Journal of Fish Diseases - November 13, 2009 Category: Zoology Authors: J Del-Pozo, J Turnbull, H Ferguson, M Crumlish Source Type: journals

Cellular components of probiotics control Yersinia ruckeri infection in rainbow trout, Oncorhynchus mykiss (Walbaum)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Subcellular components of the probiotics Aeromonas sobria GC2 and Bacillus subtilis JB-1, when administered to rainbow trout, Oncorhynchus mykiss, conferred protection against a new biogroup of Yersinia ruckeri. Thus, intraperitoneal or intramuscular injection of rainbow trout with cell wall proteins (CWPs), outer membrane proteins (OMPs), lipopolysaccharides (LPS), whole cell proteins (WCPs) and live cells followed by challenge on day 8 with Y. ruckeri led to 80[ndash]100% survival compared with 10% survival in the controls. Sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) profiles of WCPs and OMPs fr...
Source: Journal of Fish Diseases - November 12, 2009 Category: Zoology Authors: A Abbass, S M Sharifuzzaman, B Austin Source Type: journals

Utilization of tissue habitats by Myxobolus wulii Landsberg & Lom, 1991 in different carp hosts and disease resistance in allogynogenetic gibel carp: redescription of M. wulii from China and JapanEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Myxobolus wulii (=Myxosoma magna) was first described from the gills of goldfish, Carassius auratus auratus, in China. Subsequently, a myxosporean infecting the hepatopancreas of allogynogenetic gibel carp, C. auratus gibelio, was designated as a different species, Myxobolus guanqiaoensis, although the morphological features were almost identical to those of M. wulii. In Japan, an unidentified Myxobolus sp. was found in the gills and hepatopancreas of goldfish. Morphological and molecular analyses in the present study identified these myxosporeans as M. wulii, which was thus shown to use different habitats in the host fish...
Source: Journal of Fish Diseases - November 12, 2009 Category: Zoology Authors: J Y Zhang, H Yokoyama, J G Wang, A H Li, X N Gong, A Ryu-Hasegawa, M Iwashita, K Ogawa Source Type: journals

Host response to the chondracanthid copepod Chondracanthus goldsmidi, a gill parasite of the striped trumpeter, Latris lineata (Forster), in TasmaniaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this study C. goldsmidi was associated with extensive epithelial hyperplasia and necrosis. Pathological changes were most pronounced near the parasite's attachment site, with papilloma-like growths surrounding the entire parasite resulting in deformation of the filament. The number of mucous cells increased near the parasite attachment sites on both the opercula and gills. Mast cells were absent in healthy gills; in contrast numerous mast cells were identified in the papilloma-like growths. Immunostaining identified piscidin-positive mast cells in the papilloma-like growths, presenting the first evidence of piscidin in ...
Source: Journal of Fish Diseases - November 12, 2009 Category: Zoology Authors: M Andrews, S Battaglene, J Cobcroft, M Adams, E Noga, B Nowak Source Type: journals

A sensitive FRET probe assay for the selective detection of Mycobacterium marinum in fishEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Mycobacterium marinum is the causative agent of mycobacteriosis in wild and cultured fish and of atypical infection in humans. For the diagnosis of M. marinum, cultural and traditional polymerase chain reaction (PCR) methods are currently used. However, these protocols, although able to discriminate within Mycobacterium spp., have proved to be time-consuming or difficult to carry out. For this reason, the aim of this study was to obtain a rapid and specific diagnostic tool to quantify fish Mycobacterium spp. or to discriminate M. marinum from other mycobacteria. A primary PCR amplification with SYBR Green had a detection l...
Source: Journal of Fish Diseases - November 12, 2009 Category: Zoology Authors: F Salati, M Meloni, A Fenza, G Angelucci, A Colorni, G Orrù Source Type: journals

Attenuated Mycobacterium marinum protects zebrafish against mycobacteriosisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Journal of Fish Diseases)
Source: Journal of Fish Diseases - November 12, 2009 Category: Zoology Authors: Z Cui, D Samuel-Shaker, V Watral, M L Kent Source Type: journals

Complete sequencing of Tunisian redspotted grouper nervous necrosis virus betanodavirus capsid gene and RNA-dependent RNA polymerase geneEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study reports on the characterization of the full RNA2 sequence of a Tunisian betanodavirus with a length of 1433 nt, containing a 339 amino acid open-reading frame encoding the CP, and typing to the redspotted grouper nervous necrosis virus Ia genotype following phylogenetic analysis. The homology of the capsid protein to other betanodaviruses or alphanodaviruses was compared. In addition, a full length RNA1 sequence of 3104 nt encoding a 982 amino acid RNA-dependent RNA polymerase was obtained. (Source: Journal of Fish Diseases)
Source: Journal of Fish Diseases - November 12, 2009 Category: Zoology Authors: N Chérif, N Gagné, D Groman, F Kibenge, T Iwamoto, C Yason, S Hammami Source Type: journals

Diet of the squirrel glider in a fragmented landscape near Mackay, central QueenslandEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Tina Ball, Eddie Adams, Ross L. Goldingay - Volume 57(5) (Source: Australian Journal of Zoology)
Source: Australian Journal of Zoology - November 11, 2009 Category: Zoology Source Type: journals

Ant-mimicking spider, Myrmarachne species (Araneae : Salticidae), distinguishes its model, the green ant, Oecophylla smaragdina, from a sympatric Batesian O. smaragdina mimic, Riptortus serripes (Hemiptera : Alydidae)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Fadia Sara Ceccarelli - Volume 57(5) (Source: Australian Journal of Zoology)
Source: Australian Journal of Zoology - November 11, 2009 Category: Zoology Source Type: journals

Mycobacteria isolated from Chesapeake Bay fishEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Mycobacteriosis in fish can result in ulcers, emaciation, and in some cases death. Mycobacteria have been previously isolated from a variety of Chesapeake Bay fish species, and the current study was designed to identify potential host specificity and location fidelity of mycobacterial isolates. Mycobacteria were isolated from wild fish of the Chesapeake Bay collected from the Upper Bay, the Choptank River, Herring Bay, the Chicamacomico River, the Pocomoke River and the Potomac River in 2003[ndash]2006. Mycobacterial isolates were recovered from striped bass, Morone saxatilis, Atlantic menhaden, Brevoortia tyrannus, white ...
Source: Journal of Fish Diseases - November 10, 2009 Category: Zoology Authors: C B Stine, A S Kane, A M Baya Source Type: journals

MidExDB: A database of Drosophila CNS midline cell gene expressionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: MidExDB integrates large-scale gene expression data with the ability to identify individual cell types providing the foundation for detailed genetic, molecular, and biochemical studies of CNS midline cell neuronal and glial development and function. This information has general relevance for the study of nervous system development in other organisms, and also provides insight into transcriptional regulation. (Source: BMC Developmental Biology - Latest articles)
Source: BMC Developmental Biology - Latest articles - November 10, 2009 Category: Zoology Authors: Scott WheelerStephanie StaggStephen Crews Source Type: journals

Plant Water Use Affects Competition for Nitrogen: Why Drought Favors Invasive Species in CaliforniaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The American Naturalist, Volume 0, Issue 0, Page 000, Latest Articles. Abstract: Classic resource competition theory typically treats resource supply rates as independent; however, nutrient supplies can be affected by plants indirectly, with important consequences for model predictions. We demonstrate this general phenomenon by using a model in which competition for nitrogen is mediated by soil moisture, with competitive outcomes including coexistence and multiple stable states as well as competitive exclusion. In the model, soil moisture regulates nitrogen availability through soil moisture dependence of microbial p...
Source: The American Naturalist - November 9, 2009 Category: Zoology Tags: article Source Type: journals

Environmental Dependence of Thermal Reaction Norms: Host Plant Quality Can Reverse the Temperature‐Size RuleEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The American Naturalist, Volume 0, Issue 0, Page 000, Latest Articles. Abstract: The temperature‐size rule, a form of phenotypic plasticity in which decreased temperature increases final size, is one of the most widespread patterns in biology, particularly for ectotherms. Identifying the environmental conditions in which this pattern is reversed is key to understanding the generality of the rule. We use wild and domesticated populations of the tobacco hornworm Manduca sexta and the natural host plants of this species to explore the consequences of resource quality for the temperature‐size rule. Manduca sexta rear...
Source: The American Naturalist - November 9, 2009 Category: Zoology Tags: article Source Type: journals

Testing Spatial Theories of Plant Coexistence: No Consistent Differences in Intra‐ and Interspecific Interaction DistancesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We examined how intraspecific and interspecific competition scales with neighbor distance in a target‐neighbor greenhouse competition experiment. Individuals from co‐occurring forbs from calcareous grasslands were grown in isolation and with single conspecific or heterospecific neighbors at distances of 5, 10, or 15 cm (Plantago lanceolata vs. Plantago media and Hieracium pilosella vs. Prunella grandiflora). Neighbor effects were strong and declined with distance. Interaction distances varied greatly within and between species, but we found no evidence for heteromyopia. Instead, neighbor identity effects were mostly ex...
Source: The American Naturalist - November 6, 2009 Category: Zoology Tags: article Source Type: journals

Pollination Efficiency and the Evolution of Specialized Deceptive Pollination SystemsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The American Naturalist, Volume 0, Issue 0, Page 000, Latest Articles. Abstract: The ultimate causes of evolution of highly specialized pollination systems are little understood. We investigated the relationship between specialization and pollination efficiency, defined as the proportion of pollinated flowers relative to those that experienced pollen removal, using orchids with different pollination strategies as a model system. Rewarding orchids showed the highest pollination efficiency. Sexually deceptive orchids had comparably high pollination efficiency, but food‐deceptive orchids had significantly lower effici...
Source: The American Naturalist - November 6, 2009 Category: Zoology Tags: article Source Type: journals

Spring migration routes and chronology of surf scoters (Melanitta perspicillata): a synthesis of Pacific coast studiesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
S.E.W. De La Cruz, J. Y. Takekawa, M. T. Wilson, D. R. Nysewander, J. R. Evenson, D. Esler, W. S. Boyd, and D. H. Ward - Understanding interconnectivity among wintering, stopover, and breeding areas of migratory birds is pivotal to discerning how events occurring in each might have a cross-seasonal effect... (Source: Canadian Journal of Zoology)
Source: Canadian Journal of Zoology - November 6, 2009 Category: Zoology Source Type: journals

No evidence for developmental plasticity of color patterns in response to rearing substrate in pygmy grasshoppersEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
M. Karlsson, J. Johansson, S. Caesar, and A. Forsman - Color polymorphisms in animals may result from genetic polymorphisms, developmental plasticity, or a combination where some phenotypic components are under strong genetic control and other... (Source: Canadian Journal of Zoology)
Source: Canadian Journal of Zoology - November 6, 2009 Category: Zoology Source Type: journals

The Misuse of BLUP in Ecology and EvolutionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The American Naturalist, Volume 0, Issue 0, Page 000, Latest Articles. Abstract: Best linear unbiased prediction (BLUP) is a method for obtaining point estimates of a random effect in a mixed effect model. Over the past decade it has been used extensively in ecology and evolutionary biology to predict individual breeding values and reaction norms. These predictions have been used to infer natural selection, evolutionary change, spatial‐genetic patterns, individual reaction norms, and frailties. In this article we show analytically and through simulation and example why BLUP often gives anticonservative and biased e...
Source: The American Naturalist - November 5, 2009 Category: Zoology Tags: article Source Type: journals

Why Do Calypte Hummingbirds “Sing” with Both Their Tail and Their Syrinx? An Apparent Example of Sexual Sensory BiasEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The American Naturalist, Volume 0, Issue 0, Page 000, Latest Articles. Abstract: Courtship displays frequently include complex signals that females use to pick a mate. Male Costa’s hummingbirds (Calypte costae) generate two acoustic signals during courtship: a vocal song produced close to a female and a dive‐sound produced during a courtship dive. The song and dive‐sound sound similar, and both were assumed to be produced vocally by the syrinx. Here, we show that they are not; whereas the song is produced by the syrinx, the dive‐sound is produced by high‐frequency fluttering of the outermost tail feathers. ...
Source: The American Naturalist - November 5, 2009 Category: Zoology Tags: article Source Type: journals

Breakdown in Postmating Isolation and the Collapse of a Species Pair through HybridizationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The American Naturalist, Volume 0, Issue 0, Page 000, Latest Articles. Abstract: Species that evolved through ecological speciation and that lack intrinsic genetic incompatibilities may nonetheless be maintained by extrinsic postmating isolating barriers that impose selection against hybrids. These species, however, may be vulnerable to a breakdown in postmating isolation. Here, we investigate a model system for ecological speciation: sympatric limnetic‐benthic pairs of threespine sticklebacks. Recently, stickleback hybrid abundance in Enos Lake has increased. Given that ecological selection against hybrids was his...
Source: The American Naturalist - November 5, 2009 Category: Zoology Tags: article Source Type: journals