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Journal J Exp Zool A Ecol Integr Physiol

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Influence of short-term temperature drops on sex-determination in sea turtles.

Ellen Porter, David T Booth, Colin J Limpus, Melissa N Staines, Caitlin E Smith,

All sea turtles exhibit temperature-dependent sex-determination, where warmer temperatures produce mostly females and cooler temperatures produce mostly males. As global temperatures continue to rise, sea turtle sex-ratios are expected to become increasingly female-biased, threatening the long-term viability of many populations. Nest temperatures are dependent on sand temperature, and heavy rainfall ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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Leukocytes count and profile during early postnatal ontogenesis in domestic cat: Effect of litter size and multiple paternity.

Alena S Soboleva, Galina S Alekseeva, Mariya N Erofeeva, Polina S Klyuchnikova, Pavel A Sorokin, Sergey V Naidenko,

Since blood cells count is the most important indicator of animals' physiological status, we investigated the effects of age, litter size, and multiple paternity on the total number of white blood cells, the number of their individual types (lymphocytes, neutrophils, eosinophils, monocytes), and the ratio of neutrophils to lymphocytes in ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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Temperature effects on the jumping performance of house crickets.

Stephen M Deban, Christopher V Anderson,

Insect jumping and other explosive animal movements often make use of elastic-recoil mechanisms to enhance performance. These mechanisms circumvent the intrinsic rate limitations on muscle shortening, allowing for greater power production as well as thermal robustness of the associated movements. Here we examine the performance and temperature effects on jumping ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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Hif-1α is not required for the development of cardiac adrenergic control in zebrafish (Danio rerio).

William Joyce, Steve F Perry,

Adrenergic regulation, acting via the sympathetic nervous system, provides a major mechanism to control cardiac function. It has recently been shown that hypoxia inducible factor-1α (Hif-1α) is necessary for normal development of sympathetic innervation and control of cardiac function in the mouse. To investigate whether this may represent a fundamental ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(7):623-631]

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Trans-seasonal activation of the neuroendocrine reproductive axis: Low-temperature winter dormancy modulates gonadotropin-releasing hormone neurons in garter snakes.

Deborah I Lutterschmidt, Ashley R Lucas, Andrew R Summers,

All animals use external cues from the environment to accurately time life-history events. How the brain decodes environmental stimuli to effect changes in physiology and behavior, however, is poorly understood, particularly with regard to supplementary environmental cues such as temperature. We asked if low-temperature dormancy alters the synthesis and/or release ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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Time-course changes in the regulation of ions and amino acids in the hard clam Meretrix lusoria upon lower salinity challenge.

Chia-Hao Lin, Po-Ling Yeh, Tsung-Han Lee,

In this study, we examined ion and amino acid regulation in the gill and mantle of the hard clam Meretrix lusoria. We found that the osmolality and Na<sup>+</sup> and Cl<sup>-</sup> concentrations of hard clam hemolymph were significantly reduced after transferring clams from the salinity of their natural habitat [20‰ saltwater ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(7):602-613]

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Sperm motility analysis of Cobitis hankugensis, Iksookimia longicorpa (Teleostei, Cypriniformes, Cobitidae) and their unisexual natural hybrids.

Seung Woon Yun, Hyun Tae Kim, Jong Young Park,

Hybrid sterility is an inevitable phenomenon in the speciation process to avoid indiscriminate increases in species, but it is not always unconditional. We used computer assisted sperm analysis (CASA) to analyze sperm motility of Cobitis hankugensis, Iksookimia longicorpa, and their unisexual natural hybrids. In parental species, the sperm concentrations of ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(7):587-594]

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The ontogeny of personality: Repeatability of social and escape behaviors across developmental stages in Siberian hamsters (Phodopus sungorus).

Catherine H Adaniya, Cara L Wellman, Gregory E Demas, Jessica A Cusick,

Animal personality is defined as behavioral tendencies that are consistent across time and contexts within an individual, but differ across individuals. Studies investigating personality typically examine individuals across short time periods or within a single life stage. Growing evidence suggests that personality may be less stable across life stages, highlighting ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(6):]

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Evolution of hemoglobin function in tropical air-breathing catfishes.

Niels Christian Moth Andersen, Angela Fago, Christian Damsgaard,

The evolution of hemoglobin function in the transition from water- to air-breathing has been highly debated but remains unresolved. Here, we characterized the hemoglobin function in five closely related water- and air-breathing catfishes. We identify distinct directions of hemoglobin evolution in the clades that evolved air-breathing, and we show strong ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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The behavior of Gammarus aequicauda (crustacea, amphipoda) during predation on chironomid larvae: Sex differences and changes in precopulatory mate-guarding state.

Nickolai Shadrin, Vladimir Yakovenko, Elena Anufriieva,

The foraging behavior determines the diet size influencing the growth and reproduction of a predator and its prey populations. Amphipods play a key role in various aquatic ecosystems. Gammarus aequicauda is an abundant widespread omnivorous species and the only known amphipod species of hypersaline waters. Its predation can suppress the ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(6):572-582]

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The amino acid and lipophilic profiles of Chilo partellus (Swinhoe) larvae fluctuate with diapause.

Aditya K Tanwar, Jagbir S Kirti, Sandeep Kumar, Mukesh K Dhillon,

The Chilo partellus (Crambidae: Lepidoptera) larvae undergoes both hibernation and estivation in India. Although, much has been done on reproductive physiological aspects, little is known about biochemical changes happening during hibernation and estivation in C. partellus. Thus, we mapped changes in amino acid and lipophilic profiles of C. partellus larvae ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(7):595-601]

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Infection with Batrachochytrium dendrobatidis reduces salamander capacity to mount a cell-mediated immune response.

Matthew D Venesky, Corey A Laskey,

The vertebrate immune system is a costly defense system that is responsible for preventing and eliminating parasites and pathogens. Theory predicts that hosts experience tradeoffs associated with immune deployment and other physiological functions. Although empirical evidence for immune-physiology tradeoffs are well documented in the literature, fewer studies have examined tradeoffs ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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Population-level impact of native arthropod predators on the poultry red mite Dermanyssus gallinae.

Ghais Zriki, Rumsais Blatrix, Dominique J Bicout, Olivier Gimenez, Anne-Sophie Soulié, Liza Dadu, David Degueldre, Geoffrey Chiron, Nathalie Sleeckx, Lise Roy,

Stimulating the regulation of pests by their natural enemies is a way to improve the sustainability of agriculture and respect for the environment. However, the presence of natural enemies does not guarantee the existence of a pest control service. To what extent are predatory mites commonly found in henhouses actually ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(6):552-563]

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LPS-induced immunomodulation and hormonal variation over time in toads.

Braz Titon Junior, Stefanny Christie Monteiro Titon, Vania Regina Assis, Adriana Maria Giorgi Barsotti, Ronyelle Vasconcelos-Teixeira, Pedro Augusto Carlos Magno Fernandes, Fernando Ribeiro Gomes,

The inflammatory response is a complex process that relies on interactions among multiple endocrine and immune modulators. Studies incorporating time-related and integrative endocrine and immune responses to an immune challenge might shed light on the characterization of the phases of the inflammatory response in anurans. The present study investigated time-related ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(6):541-551]

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Effects of endocrine-disrupting chemicals on hypothalamic oxytocin and vasopressin systems.

Michael P Reilly, M Nicole Kunkel, Lindsay M Thompson, Andrew Zentay, Connor D Weeks, David Crews, Lawrence K Cormack, Andrea C Gore,

Exposures to endocrine disrupting chemicals (EDCs) perturb hormonal systems. EDCs are particularly problematic when exposure happens in the fetus and infant due to the high sensitivity of developing organisms to hormone actions. Previous work has shown that prenatal polychlorinated biphenyl (PCB) exposure disrupts hypothalamic development, reproductive physiology, mate preference behavior, ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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JNK/Elk1 signaling and PCNA protein expression in the brain of hibernating frog Pelophylax esculentus.

Sara Falvo, Alessandra Santillo, Maria Maddalena Di Fiore, Luigi Rosati, Gabriella Chieffi Baccari,

Mitogen activated protein kinase (MAPK) activation and neurogenesis are known to play a role in neuronal survival during hibernation. Herein, we investigate the activity of c-Jun N-terminal kinases (JNK) and Ets like-1 protein (Elk1) kinase involved in cell survival, as well as the expression of proliferating cell nuclear antigen (PCNA), ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(5):529-536]

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Thermoregulatory strategies of three reclusive lizards (genus Xantusia) from the Baja California peninsula, Mexico, under current and future microenvironmental temperatures.

Diego M Arenas-Moreno, Rafael A Lara-Resendiz, Saúl F Domínguez-Guerrero, Ana G Pérez-Delgadillo, Francisco J Muñoz-Nolasco, Patricia Galina-Tessaro, Fausto R Méndez-de la Cruz,

The thermal quality of the habitat is key for the regulation of body temperature in terrestrial ectotherms and, therefore, permits them to carry out their fundamental biological activities. In thermally heterogeneous environments, ectotherms might follow different behavioral or physiological strategies to maintain their body temperature within biologically adequate boundaries, for ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(5):499-511]

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The physiology of fish in acidic waters rich in dissolved organic carbon, with specific reference to the Amazon basin: Ionoregulation, acid-base regulation, ammonia excretion, and metal toxicity.

Carolyn Morris, Adalberto L Val, Colin J Brauner, Chris M Wood,

Although blackwaters, named for their rich content of dissolved organic carbon (DOC), are often very poor in ions and very acidic, they support great fish biodiversity. Indeed, about 8% of all freshwater fish species live in the blackwaters of the Rio Negro watershed in the Amazon basin. We review how ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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Assessment of captive rearing conditions on loggerhead hatchlings: Effect of handling frequency and stocking density.

Alejandro Usategui-Martín, Ana Liria-Loza, Roldán A Valverde, Judit Pinós-Crosas, Fernando Tuya, Annaïs Carbajal, Manel López-Bejar, Daniel Montero,

Frequently, stranded sea turtles require rehabilitation under controlled conditions. Currently, few publications have described the conditions under which rehabilitation is to take place, particularly with respect to the hatchling life stage. To address this paucity of data, we conducted some experiments to assist rehabilitating facilities assess their handling of hatchlings. ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(5):489-498]

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Changes in expressions of ecdysteroidogenic enzyme and ecdysteroid signaling genes in relation to Bombyx embryonic development.

Shi-Hong Gu, Chien-Hung Chen, Pei-Ling Lin,

Although the role of ecdysteroids in regulating egg diapause process in Bombyx mori is well documented, temporal changes in expression levels of genes involved in ecdysteroid biosynthesis and its downstream signaling are less well understood. In the present study, we studied changes in expression levels of genes involved in ecdysteroid ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(5):477-488]

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Evolutionary insights into sexual behavior from whiptail lizards.

Lauren A O'Connell, David Crews,

Is the brain bipotential or is sex-typical behavior determined during development? Thirty years of research in whiptail lizards transformed the field of behavioral neuroscience to show the brain is indeed bipotential, producing behaviors along a spectrum of male-typical and female-typical behavior via a parliamentary system of neural networks and not ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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Tails of reproduction: Regeneration leads to increased reproductive investment.

Abby E Beatty, David M Mote, Tonia S Schwartz,

Trade-offs between life-history traits are due to limited resources or constraints in the regulation of genetic and physiological networks. Tail autotomy, with subsequent regeneration, is a common anti-predation mechanism in lizards and is predicted to trade-off with life-history traits, such as reproduction. We utilize the brown anole lizard with its ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(5):522-528]

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Challenging dogmas: How transgenerational epigenetics reshapes our views on life.

Harrison D Wang, Patrick Allard,

The emergence of the field of transgenerational epigenetics inheritance (TEI) has profoundly reshaped our understanding of the relationships between environment, soma, and germ cells as well as of heredity. TEI refers to the changes in chromatin state, gene expression, and/or phenotypes that are transmitted across several generations without involving changes ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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Can the exposure system adopted influence the results of the atrazine toxicity in hepatic tissue of fish?

Anderson K S Macêdo, Pauliane de Melo Costa, Mariana A R Salgado, Rosy I M A de Ribeiro, Hélio B Dos Santos, Ralph G Thomé,

The widespread use of atrazine, a herbicide used to control weeds, has contributed to the increased contamination of aquatic environments. To assess the toxicological effects of a xenobiotic on a nontarget organism in the laboratory, different models of toxicological exposure systems have been widely used. Therefore, the aim of this ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, 335(5):512-521]

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Using the swimbladder as a respiratory organ and/or a buoyancy structure-Benefits and consequences.

Bernd Pelster,

A swimbladder is a special organ present in several orders of Actinopterygians. As a gas-filled cavity it contributes to a reduction in overall density, but on descend from the water surface its contribution as a buoyancy device is very limited because the swimbladder is compressed by increasing hydrostatic pressure. It ... Read more >>

J Exp Zool A Ecol Integr Physiol (Journal of experimental zoology. Part A, Ecological and integrative physiology)
[2021, :]

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