Results 151 to 160 of about 448,134 (326)
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.ABSTRACT Amphibians are the most threatened vertebrate class globally. Climate change, agrochemicals, and/or pathogens and parasites are implicated in contributing to amphibian declines, either singly or in combination. We investigated individual and combined effects of elevated temperatures and atrazine (2.0 μg/L) on Lithobates [formerly Rana] pipiens
Melody J. Gavel +7 more
wiley +1 more source
Ciência Animal Brasileira, 2010 <p>The aim of this study was to evaluate the testicular maturation in the manjuba Curimatella lepidura. For that, 318 males were collected from the Tres Marias Reservoir, Minas Gerais State, Brazil.
Denilson Burkert +4 more
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Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.ABSTRACT 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 success through melatonin. Angiogenesis and oxidative stress are key processes in spermatogenesis, contributing to testicular remodeling and ...
Ilaria Troisio +7 more
wiley +1 more source
Regulatory mechanisms of reproduction in locusts and grasshoppers
New Plant Protection, EarlyView.Regulatory networks composed of numerous coding and noncoding genes play crucial roles in the reproduction of locusts and grasshoppers. This review integrates mechanistic advances in reproductive regulation, highlighting environmentally adaptive pathways and providing prospective targets for eco‐friendly pesticides.
Jing He, Jiliang Wang, Xinran Wang
wiley +1 more source
The Goldfish as a Model for Studying Neuroestrogen Synthesis, Localization, and Action in the Brain and Visual System [PDF]
, 2011 Organizational and activational effects of estrogen (E) in the central nervous system (CNS) are exerted directly by circulating E and indirectly after aromatization of circulating androgen to E in the brain itself. Understanding an environmental chemical'
Betka, M., Callard, G. V., Kruger, A.
core +1 more source
C/EBPα is Essential for Gonadal but Not Inguinal White Adipose Tissue Formation in Mice
Obesity, EarlyView.Human genetics has linked the gene CEBPA to waist to hip ratio and adipose distribution. We generated mice with AdipoQ‐Cre driven deletion of Cebpa and found these mice to have a specific reduction in gonadal white adipose tissue and myriad other metabolic phenotypes.
Krista Y. Hu +10 more
wiley +1 more source
Expression of three GnRH receptors in specific tissues in male and female sea lampreys Petromyzon marinus at three distinct life stages [PDF]
, 2013 Two recently cloned gonadotropin-releasing hormone (GnRH) receptors (lamprey GnRH-R-2 and lamprey GnRH-R-3) along with lamprey (l) GnRH-R-1 were shown to share similar structural features and amino acid motifs common to other vertebrate receptors.
Daukss, Dana M. +3 more
core +1 more source
The effects of seasonality and parasitism on diet and habitat selection in the common periwinkle
Oikos, EarlyView.The common periwinkle Littorina littorea is an ecologically important grazer, known for its strong influence on algal communities and its role in structuring ecosystems. It serves as the first intermediate host for several trematode species in the Baltic Sea, especially for the fluke Cryptocotyle lingua.
Friederike Gronwald +7 more
wiley +1 more source
RADS Journal of Biological Research & Applied Science, 2013 Gonado-somatic index (GSI) of Nemipterus japonicus was studied during the period August 2003 – January 2004. Size wise gonadal maturation was determined quantitatively by gonodo-somatic index in both sexes.
Hira Hussain, Bushra Khalil
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The gonadal maturation in Turbo (Batillus) cornutus.
NIPPON SUISAN GAKKAISHI, 1985 Tetsuo YAMAMOTO, Hiroshi YAMAKAWA
openaire +2 more sources