Literaturdatenbank
Literaturdatenbank |
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Fu, L.-R., He, B., Hong, M.-L., & Shi, H.-T. S. (2008). Seasonal changes of reproductive hormones in the plasma of four eye-spotted turtle,sacalia quadriocellata. Chinese Journal of Zoology, 3.
Added by: Admin (28 Dec 2009 19:57:01 UTC) |
| Resource type: Journal Article BibTeX citation key: Fu2008 View all bibliographic details  |
Categories: General Keywords: Blut = blood, Fortpflanzung = reproduction, Geoemydidae, Sacalia, Sacalia quadriocellata, Schildkröten = turtles + tortoises Creators: Fu, He, Hong, Shi Collection: Chinese Journal of Zoology |
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| Abstract |
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Sacalia quadriocellata In this paper,the plasma gonadotropins including follicle-stimulating hormone(FSH),luteinizing hormone(LH),gonadal steroids testosterone(T),estradiol(E_2)and progesterone(P)of freshly captured Four Eye-spotted Turtle(Sacalia quadriocellata)were measured using a radio-immunoassay(RIA)method.The result shows that:The reproductive hormones in plasma displayed a distinct seasonal cycles.The plasma gonadal steroids levels are correlation to environmental temperature,as highest during summer and autumn,lowest in winter.Plasma T elevated during the period gonadal maturation and spermatogenesis occur.In female,there was a preovulatory LH surge and T rise during mating period,which probably is related to receptivity and coincided with ovarian maturation.Female E_2 levels increased prior to mating season and appeared to stimulate vitellogenin production by liver.A sharp surge of P displayed during mating period(autumn)which coincided with the timing of ovulation.
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