California Bat Rays exposed to waterborne cues from chased conspecifics increased swimming velocity by ~21%, providing evidence for a disturbance cue mediated behavioral response in elasmobranchs #FishBehavior onlinelibrary.wiley.com/doi/10.1002/...
Journal of Experimental Zoology A
@jexpzoo-a.bsky.social
The Journal of Experimental Zoology Part A publishes articles at the interface of development, physiology, ecology and evolution. https://t.co/JuePvByyKG
Summer Sheep ☀️🐑 Summer heat stress caused physiological strain in Barbarine ewes but did not impair reproductive function, highlighting their strong resilience to heat stress. #Ecophysiology onlinelibrary.wiley.com/doi/10.1002/...
Effects of Summer Heat Stress on Physiological Parameters and Reproductive Efficiency of Barbarine Ewes Under Natural Outdoor or Indoor Conditions
Climate change and rising ambient temperatures increasingly challenge sheep production systems in arid and semi-arid regions, particularly during the summer breeding season. This study evaluated the ...
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Phymaturus cf. palluma lizards exhibit seasonal differences in preferred and body temperatures, along with moderate thermoregulatory efficiency and the capacity to cope with changes in their natural environment. #Ecophysiology onlinelibrary.wiley.com/doi/10.1002/...
Seasonal Thermal Ecology and Locomotor Performance of an Andean Viviparous Lizard: Assessment of Its Vulnerability to Climate Change
Lizards, in general, tend to maintain body temperatures close to and often below physiological optima because of variations in body temperatures, as well as the asymmetry of thermal performance curve...
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Ionic regulation was studied in estuarine and freshwater shrimp. While the freshwater species Palaemon argentinus increased gill H⁺-ATPase activity at low salinity, the estuarine species Palaemon macrodactylus experienced ion loss and tissue swelling onlinelibrary.wiley.com/doi/10.1002/...
Ionic Regulation in Estuarine and Freshwater Palaemonid Shrimp
Hyper-regulation requires animals to absorb ions against concentration gradients. Although ion absorption would involve different pathways in estuarine and freshwater organisms, current models remain...
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Plasma metabolomics revealed metabolic differences between the European rabbit (Oryctolagus cuniculus) subspecies, identifying candidate biomarkers that reflect functional divergence likely driven by genetic background and ecological factors #Metabolomic onlinelibrary.wiley.com/doi/10.1002/...
Beyond Genes: Metabolomic Evidence Indicates Potential Species‐Level Differentiation in European Wild Rabbits
The European rabbit (Oryctolagus cuniculus) plays a key ecological role in Mediterranean ecosystems, yet its populations are declining. Two subspecies, O. c. algirus and O. c. cuniculus, are present ...
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Acute cold stress in juvenile yellowfin tuna (Thunnus albacares) triggered a biphasic metabolic response, with initial inhibition followed by compensation. Prolonged exposure to cold caused severe gastrointestinal tissue damage #FishPhysiology onlinelibrary.wiley.com/doi/10.1002/...
Impacts of Acute Hypothermia Stress on Gastrointestinal Digestive Enzyme Function and Pathological Changes in Yellowfin Tuna (<i>Thunnus albacares</i>)
This study investigated the effects of acute cold stress on digestive function and gastrointestinal pathology in juvenile yellowfin tuna (Thunnus albacares). The experimental setup encompassed a cont...
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Microplastics in Muscles 🎣 This study in grass carp (Ctenopharyngodon idella) revealed that long-term microplastic exposure may affect muscle quality through mechanisms involving oxidative stress and inflammatory responses #Microplastics onlinelibrary.wiley.com/doi/10.1002/...
Thirty Weeks of Microplastics Exposure Alters Muscle Quality in Grass Carp (<i>Ctenopharyngodon idella</i>) Revealed by Transcriptomics and Metabolomics
Microplastics (MPs) are tiny particles with a diameter of less than 5 mm generated from the breakdown of plastic waste. In recent years, MPs have extensively entered aquatic environments and accumula...
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Shapes and Survival 🐠 In the damselfish Dascyllus carneus, survival is closely linked to morpho-functional development, with mortality peaking during early developmental stages marked by major morphological changes #DevelopmentalBiology onlinelibrary.wiley.com/doi/10.1002/...
Highly Divergent Age‐Specific Postembryonic Developmental Constraints and Phenotypic Plasticity in Hatchery‐Reared Tropical Cloudy Damselfish, <i>Dascyllus carneus</i> Fischer, 1885
The proper understanding and standardization of animal growth is one of the fundamental problems in developmental biology. This means their morphology, behavior, and feeding habits will change as the...
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Seasonal remodeling of camel spleen architecture was revealed using histology, semithin sections, and immunohistochemistry. Quantitative image analysis showed summer-associated changes in immune cell distribution, proliferation, and vascular specialization onlinelibrary.wiley.com/doi/10.1002/...
Immune-challenged male field crickets (Gryllus bimaculatus) reduced acoustic sexual signaling but maintained sperm production and sperm oxidative status. Immune activation also had intergenerational effects on offspring behavior #BehavioralEcology onlinelibrary.wiley.com/doi/10.1002/...
Immune Activation Reshapes Male Reproductive Investment and Induces Intergenerational Effects on Offspring
The activation of the immune system is a major physiological challenge that can compromise reproductive investment in males. While its effects on visual sexual signals have been widely investigated, ....
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Seasonal metabolism in the sand lizard (Liolaemus arambarensis) differs by sex and age, with females allocating energy to vitellogenesis, males storing and mobilizing reserves for reproduction, and juveniles prioritizing growth and survival #Ecophysiology onlinelibrary.wiley.com/doi/10.1002/...
Tracking the Pulse of the Dunes: Seasonal Metabolic Responses of <i>Liolaemus arambarensis</i> to Climatic Variability
Seasonal environmental fluctuations profoundly influence ectothermic vertebrates, regulating their physiology, metabolism, and life cycles. This study investigated the metabolic and morphometric seas....
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Big-belly seahorses (Hippocampus abdominalis) co-exposed to microplastics and the pathogen Vibrio harveyi exhibited disrupted immune homeostasis due to the synergistic physiological stress imposed by these two factors #MarineBiology onlinelibrary.wiley.com/doi/10.1002/...
In nine-spined sticklebacks (Pungitius sinensis), male kidney extracts attracted ovulating females, suggesting that the nest adhesive protein spiggin also functions as a chemical cue during reproduction #FishBehavior onlinelibrary.wiley.com/doi/10.1002/...
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In common carp (Cyprinus carpio), trophic discrimination factors varied with temperature, highlighting the importance of considering environmental thermal conditions in evaluating stable isotope signatures in trophic studies #FishEcology onlinelibrary.wiley.com/doi/10.1002/...
The Effect of Temperature on Trophic Discrimination of Stable Isotopes (<sup>13</sup>C and <sup>15</sup>N) and Biokinetics in Common Carp (<i>Cyprinus carpio</i>, L. 1758)
Stable isotope analysis (SIA) provides essential information toward a better understanding of trophic ecology. However, the interpretation of SIA results relies on assumptions about the trophic discr...
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Cell-mediated immune responses, measured by phytohemagglutinin (PHA)-induced skin swelling, were significantly greater in domesticated Bengalese finches than those in their wild ancestors, the white-rumped munias #Ecophysiology onlinelibrary.wiley.com/doi/10.1002/...
Domestication Effects on Immune Response: Comparison of Phytohemagglutinin‐Induced Skin Swelling in Domesticated Bengalese Finch and Its Wild Ancestor, White‐Rumped Munia
Cell-mediated immune responses were compared between the domesticated Bengalese finch (Lonchura striata var. domestica) and its wild ancestor, the white-rumped munia (Lonchura striata), using phytohe....
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Fly Off 🪰 The bacterium Serratia marcescens exhibited strong entomopathogenic activity against the melon fly (Bactrocera cucurbitae), damaging the midgut and disrupting immune-related gene expression. #Entomology #Biocontrol onlinelibrary.wiley.com/doi/10.1002/...
Entomopathogenic Potential of a Species of Serratia marcescens Originating from the Gut of Melon Fly: Isolation, Characterization and Effect of Oral Administration
The melon fly, Bactrocera cucurbitae (Coquillett), represents a devastating agricultural pest species. Conventional chemical control strategies are increasingly compromised by the development of inse....
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Taking a Breath 🐟 Air-gulping in Awaous tajasica contributes directly to oxygen uptake under hypoxic conditions, with fish obtaining ~30% of oxygen from air despite lacking specialized air-breathing organs #FishPhysiology onlinelibrary.wiley.com/doi/10.1002/...
Using an automated pipeline to quantify aggressive behaviors in Mexican tetra (Astyanax mexicanus), researchers found distinct differences between surface and cave fish during juvenile stages #Behavior onlinelibrary.wiley.com/doi/10.1002/...
Automated Profiling of Social Behaviors to Assess the Genetic Basis of Evolution of Aggressive Behaviors in Astyanax mexicanus
Across the animal kingdom, social behaviors such as aggression are critical for survival and reproductive success. While there is significant variation in social behaviors within and between species,...
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In Chinese moccasins (Deinagkistrodon acutus), short-term cold exposure decreased serum lipids and antioxidant indicators while upregulating anti-apoptotic mechanisms, revealing aspects of the transition from activity to hibernation in ectotherms #Snakes onlinelibrary.wiley.com/doi/10.1002/...
The Effects of Short‐Term Cold Exposure on Serum Lipids, Antioxidant Capacity, and Hepatic Cell Apoptosis in Chinese Moccasin (Deinagkistrodon acutus)
Hibernation is an amazing survival skill that some animals use to cope with natural challenges, and cold is the main stimulus. While most hibernation studies focus on long-term cold adaptation mechan...
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Following the trail 🐺 In Iberian wolves, the persistence of fecal chemical compounds declines over time and differs among substrates, while substrate temperature has only limited effects #AnimalBehavior onlinelibrary.wiley.com/doi/10.1002/...
Experimental Assessment of the Effects of Substrate Choice on the Duration of Chemical Signals in Fecal Scent‐Marks of Free‐Ranging Iberian Wolves
Chemical communication, typically based on feces, urine, and glandular secretions, often deposited as substrate scent marks, plays a key role in social organization and communication among many mamma...
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🐣 In chicken embryos (Gallus gallus), Liver X Receptor α (LXRα) regulates the expression of 5β-reductase (AKR1D1), a key enzyme involved in metabolizing yolk steroids #DevelopmentalBiology #Endocrinology onlinelibrary.wiley.com/doi/10.1002/...
Liver X Receptor α (LXRα) Regulates 5β‐Reductase (AKR1D1) Expression in Avian Embryos: Implications for Yolk Steroid Metabolism
Steroid-mediated maternal effects are well-studied as a source of phenotypic variation. In bird eggs, the yolk contains various steroids that can influence embryonic development. However, one complic...
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In the seasonally breeding Red Munia (Amandava amandava), growth hormone (GH) levels increase during testicular recrudescence and breeding, correlating with testis growth #Endocrinology onlinelibrary.wiley.com/doi/10.1002/...
The alligator gar (Atractosteus spatula) exhibits gill adaptations for salinity acclimation similar to many teleosts, with saline exposure increasing Na+, K+-ATPase-rich ionocytes #FishPhysiology onlinelibrary.wiley.com/doi/10.1002/...
Effects of Salinity on Gill Ultrastructure of Alligator Gar Atractosteus spatula
The alligator gar, Atractosteus spatula (Lacépède, 1803), is a euryhaline, bimodal breather, occupying a wide range of habitats. The gills and swim bladder are both respiratory organs, creating a pot...
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Male tree swallows (Tachycineta bicolor) reduce offspring provisioning at high temperatures before reaching overheating thresholds. Females also adjust their activity to match male behavior #Ornithology #Ecophysiology onlinelibrary.wiley.com/doi/10.1002/...
Metabolomic analyses of Hylarana erythraea frogs show that habitat disturbance alters skin metabolite profiles, with minimally disturbed ponds associated with higher LPCs, while disturbed sites exhibit xenobiotics and stress markers #Conservation onlinelibrary.wiley.com/doi/10.1002/...
Nano-selenium supplementation improved liver health in grass carp (Ctenopharyngodon idellus) by reducing oxidative stress, modulating amino acid and lipid metabolism, and enhancing hepatocyte membrane stability #FishPhysiology onlinelibrary.wiley.com/doi/10.1002/...
Thirty Weeks Dietary Nano‐Selenium Improves Liver Health of Grass Carp (Ctenopharyngodon idella) Revealed by Transcriptomics and Metabolomics
Grass carp (Ctenopharyngodon idellus), China's most valuable freshwater aquaculture species, exhibits growth and nutrient utilization efficiency that are highly dependent on feed quality. After macro...
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Mammalian limb dynamics vary across biological factors, with body mass emerging as the dominant predictor. Despite this, angular utilization remains broadly conserved across mammals, consistent with shared neuromechanical coordination. #Biomechanics onlinelibrary.wiley.com/doi/10.1002/...
This study evaluated the expression of oxidative stress and angiogenesis related genes in testes of roe deer (Capreolus capreolus), revealing differential expression between pre- and post-rut periods 🦌 #ReproductiveBiology onlinelibrary.wiley.com/doi/10.1002/...
Molecular Investigations on Angiogenesis and Oxidative Stress in Roe Deer (Capreolus capreolus) Bucks' Testes Throughout the Reproductive Cycle
Animals with seasonal reproductive cycles, as the Roe deer (Capreolus capreolus), have developed mechanisms to synchronize reproduction with the environmental cycle in order to optimize reproductive ...
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In pond sliders (Trachemys scripta), incubation temperature and overwintering environment affected hatchling size and righting performance. Nest-overwintered hatchlings showed consistently faster righting #Ontogeny onlinelibrary.wiley.com/doi/10.1002/...
Incubation and Overwintering Conditions Influence Righting Performance of Hatchling Turtles
Conditions experienced during early life stages may influence an array of fitness-relevant phenotypes, especially in oviparous ectotherms. The pond slider (Trachemys scripta) has two life stages part....
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Maternal environment and offspring behavior 🐹 Siberian hamsters (Phodopus sungorus) show reduced aggression and social interaction over prolonged intruder encounters, regardless of maternal environment #Ontogeny onlinelibrary.wiley.com/doi/10.1002/...
Getting Over It: Maternal Stress and Gut Microbiome Manipulations Do Not Affect Rates of Offspring Habituation During Long Bouts of Stress
Conspecific competitive interactions occur in a variety of contexts, including for resources and territory. These competitive interactions can vary in frequency and duration. The amount of aggression...
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