Dataset Information

Estrogenic response in Japanese turtle (Mauremys japonica) exposed to petroleum hydrocarbon.

ABSTRACT: Expressions of the estrogen receptors and vitellogenin in Japanese turtle (Mauremys japonica) in response to petroleum hydrocarbon were studied. A total of 15 male turtles were exposed to 1.00 mg L^-1 of a sample of an oil spill, and 15 male and 15 female turtles were served as controls without an oil spill. The transcripts' results demonstrated an increase over time with greater expression of vitellogenin I in males exposed to petroleum with significant differences. In the case of vitellogenin II, the expression was greater than control males, but it was similar to the values of control females. Concerning the estrogen receptor and estrogen receptor , males exposed to oil spill presented higher values at 72 hr than the controls. In conclusion, in the present work, the effect of petroleum as an endocrine disruptor in turtles was demonstrated, and it can be used to identify damages induced by the presence of hydrocarbons in aquatic environments.

SUBMITTER: Lara-Flores M

PROVIDER: S-EPMC8094136 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Estrogenic response in Japanese turtle (Mauremys japonica) exposed to petroleum hydrocarbon.

Lara-Flores Maurilio M von Osten Jaime Rendon JR

Veterinary research forum : an international quarterly journal 20210315 1

Expressions of the estrogen receptors and vitellogenin in Japanese turtle (Mauremys japonica) in response to petroleum hydrocarbon were studied. A total of 15 male turtles were exposed to 1.00 mg L-1 of a sample of an oil spill, and 15 male and 15 female turtles were served as controls without an oil spill. The transcripts' results demonstrated an increase over time with greater expression of vitellogenin I in males exposed to petroleum with significant differences. In the case ...[more]

PMID: 33953884

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Project description:Despite evidence from anatomy, behavior and genomics indicating that the sense of smell in turtles is important, our understanding of chemical communication in this group is still rudimentary. Our aim was to describe the microanatomy of mental glands (MGs) in a freshwater turtle, Mauremys leprosa (Geoemydidae), and to assess the chemical composition of their secretions with respect to variation among individuals and between sexes. MGs are paired sac-like organs on the gular region of the neck and are dimorphic in this species with males having fully functional holocrine glands while those of females appear non-secretory and vestigial. In adult males, the glandular epithelium of the inner portion of the gland provides exocytotic products as well as cellular debris into the lumen of the gland. The contents of the lumen can be secreted through the narrow duct portion of the gland ending in an orifice on the surface of the skin. Females have invaginated structures similar in general outline to male glands, but lack a glandular epithelium. Using gas chromatography coupled to mass spectrometry, we identified a total of 61 compounds in mental gland secretions, the most numerous being carboxylic acids, carbohydrates, alkanes, steroids and alcohols. The number of compounds per individual varied widely (mean (median) ± SD = 14.54 (13) ± 8.44; min = 3; max = 40), but only cholesterol was found in all samples. We found that the relative abundances of only six chemicals were different between the sexes, although males tended to have larger amounts of particular compounds. Although the lipid fraction of mental gland secretions is rich in chemical compounds, most occur in both sexes suggesting that they are metabolic byproducts with no role in chemical signaling. However, the relative amounts of some compounds tended to be higher in males, with significantly larger amounts of two carboxylic acids and one steroid, suggesting their putative involvement in chemical communication.

Dataset Information

Estrogenic response in Japanese turtle (Mauremys japonica) exposed to petroleum hydrocarbon.

Publications

Estrogenic response in Japanese turtle (<i>Mauremys japonica</i>) exposed to petroleum hydrocarbon.

Similar Datasets

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