Browsing San Diego Zoo Wildlife Alliance Research by Subject "ALLIGATORS"
Now showing items 1-3 of 3
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Altered gonadal expression of TGF-beta superfamily signaling factors in environmental contaminant-exposed juvenile alligatorsEnvironmental contaminant exposure can influence gonadal steroid signaling milieus; however, little research has investigated the vulnerability of non-steroidal signaling pathways in the gonads. Here we use American alligators (Alligator mississippiensis) hatched from field-collected eggs to analyze gonadal mRNA transcript levels of the activin–inhibin–follistatin gene expression network and growth differentiation factor 9....
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Hormones and reproductive cycles in CrocodiliansDuring embryonic development, hormonal influence upon sexual differentiation in crocodilians begins and continues for years until sexual maturation is attained. Shortly after sex determination, estrogen production in the embryonic ovary increases and promotes proliferation of the Müsllerian ducts, whereas the testis produces anti-Müllerian hormone, which results in its regression....
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Influences of sex, incubation temperature, and environmental quality on gonadal estrogen and androgen receptor messenger RNA expression in juvenile American alligators (Alligator mississippiensis)...We have shown previously that gonads from wild-caught juvenile alligators express greater levels of estrogen receptor 1 (ESR1) than estrogen receptor 2 (ESR2).... These findings demonstrate that the mRNA expression of receptors required for steroid hormone signaling are modified by exposure to environmental factors, including temperature and contaminants.
