Effect of an increase in environmental temperature on testicular androgenesis and spermatogenesis in toad (<i>Bufo melanostictus</i>) during hibernating season

Mondal, Saswati Parua; Debnath, J.; Ghosh, Debidas

doi:10.1002/zoo.20371

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…High temperatures also stimulate the kinetics of gametogenesis in adult C. gigas (Fabioux et al, 2005). In the same way, high temperatures induce an increase of gonadal index in the horse-bearded mussel Modiolus barbatus (Mladineo et al, 2007) and accelerate spermatogenesis in the toad Bufo melanosticus (Parua Mondal et al, 2011). In contrast, in the mussel Mytilus edulis and the pearl oyster Pinctada imbricate, increased temperatures slow down gametogenesis, as energy is allocated to metabolism rather than reproduction (Urban, 2000;Fearman and Moltschaniwskyj, 2010).…”

Section: Temperature Influences the First Gonadic Differentiation Andmentioning

confidence: 99%

Oyster sex determination is influenced by temperature — First clues in spat during first gonadic differentiation and gametogenesis

Santerre

Sourdaine

Marc

et al. 2013

Comparative Biochemistry and Physiology Part A: Molecular &

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The sex-determining system of Crassostrea gigas is still poorly known, especially regarding the potential influence of temperature. In order to address this question, mRNA expressions of actors of the molecular cascade (Cg-DMl, Cg-SoxE, Cg-β-catenin, Cg-Foxl2/Cg-Foxl2os) and of Oyvlg, a germ cell marker, were investigated by real-time PCR in spat grown at different temperatures (18, 22, 25 and 28°C). In parallel, gonadic differentiation, gametogenesis and sex ratios were assessed by histology at each of these temperatures. Whatever the temperature, Cg-DMl, Cg-SoxE, Cg-β-catenin and Oyvlg expressions peaked at the same developmental stage, always after Cg-Foxl2/Cg-Foxl2os (around 40-44dpf for spat grown at 18°C). Temperatures increased the kinetics of first gonadic differentiation and gametogenesis. At 25°C a significant switch occurred in sex ratio towards males and in the balance of expression between male and female genes, in favor of males. A slight gametogenesis disturbance was also observed. These results strengthen the hypotheses about the sex-determining time window and molecular cascade governing the development of C. gigas, with notably the involvement of Cg-Foxl2/Cg-Foxl2os in the very early steps. They also suggest an influence of temperature on the oyster's sex determination which, associated to genetic control, would induce a mixed sex determination system (GSD+TSD).

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Section: Temperature Influences the First Gonadic Differentiation Andmentioning

confidence: 99%

Oyster sex determination is influenced by temperature — First clues in spat during first gonadic differentiation and gametogenesis

Santerre

Sourdaine

Marc

et al. 2013

Comparative Biochemistry and Physiology Part A: Molecular &

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“…The spermatogenesis differs depending on the type of cells in the seminiferous tubule between hibernating or non-hibernating mammals. ( Barnes et al, 1986 ; Jagiello et al, 1986 ; Parua et al, 2011 ; Lee, 2013 ). In mouse, seminiferous epithelium is divided into spermatogonium, spermatocytes, spermatid, sperm, and Sertoli cells.…”

Section: Discussionmentioning

confidence: 99%

Differential Expression of Cyclic AMP-Response Element Binding Protein Zhangfei (CREBZF) in the Mouse Testis during Postnatal Development

Jang

2018

Dev Reprod

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Cyclic AMP-response element binding protein zhangfei (CREBZF), a member of ATF/CREB (activating transcription factor/ cAMP response element binding protein) family, regulates numerous cellular functions and development of cells by interacting transcription factors. This study discovered the expression pattern of CREBZF in seminiferous tubule of testes during the postnatal development of mice. In testis, CREBZF mRNA expression was the highest among other organs. Immunofluorescence analyses showed that the CREBZF was specifically expressed on spermatocyte but not in spermatogonia and Sertoli cells in seminiferous epithelium of mouse testis. Semi-quantitative polymerase chain reaction (PCR) analysis showed that CREBZF transcript level was significantly elevated during postnatal development of mouse testis. Confocal imaging analysis indicated that the protein expression of CREBZF in seminiferous tubule remained low until postnatal day (PD) 14, and was dramatically increased in PD 21. Interestingly, only one type of the spermatocyte expressed CREBZF specifically among SCP3-positive spermatocytes. Taken together, these results suggest that CREBZF may be novel putative marker of the spermatocyte and regulate meiosis during postnatal development of mice.

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High temperatures influence sexual development differentially in male and female tadpoles of the Indian skipper frog, Euphlyctis cyanophlyctis

Phuge

2017

J Biosci

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Although sex determination in amphibians is believed to be a genetic process, environmental factors such as temperature are known to influence the sex differentiation and development. Extremely low and high temperatures influence gonadal development and sex ratio in amphibians but the mechanism of action is not known. In the present study, effect of different temperatures on gonadal development, sex ratio and metamorphosis was studied in the Indian skipper frog, Euphlyctis cyanophlyctis. The embryos of Gosner stage 7 were exposed to 20, 22, 24, 26, 28, 30 and 32 degrees C up to tadpole stage 42. The embryos (stage 7) were also exposed to 20 and 32 degrees C up to tadpole stage 25 (non-feeding stages). Tadpoles of stage 25 were reared at 20 and 32 degrees C up to stage 42 (feeding stages). The results show that exposure to higher temperatures (28, 30 and 32 degrees C) during stages 7-42 produced male-biased sex ratio. Rearing of tadpoles at 32 degrees C during stages 25-42 produced malebiased sex ratio, while exposure during stages 7-25 did not affect sex ratio. Embryos and tadpoles exposed to lower temperatures (20 and 22 degrees C) died during the early stages. High temperatures stimulated testis development, and disturbed ovary development. Exposure to high temperatures resulted in the early metamorphosis of tadpoles with reduced body size. These results demonstrated that high temperatures influence gonadal development differently in male and female tadpoles, leading to male-biased sex ratio. These results suggest that high temperature probably acts through stress hormones and favours the small-sized sex.

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Effect of an increase in environmental temperature on testicular androgenesis and spermatogenesis in toad (Bufo melanostictus) during hibernating season

Cited by 4 publications

References 12 publications

Oyster sex determination is influenced by temperature — First clues in spat during first gonadic differentiation and gametogenesis

Oyster sex determination is influenced by temperature — First clues in spat during first gonadic differentiation and gametogenesis

Differential Expression of Cyclic AMP-Response Element Binding Protein Zhangfei (CREBZF) in the Mouse Testis during Postnatal Development

High temperatures influence sexual development differentially in male and female tadpoles of the Indian skipper frog, Euphlyctis cyanophlyctis

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