Literaturdatenbank
Literaturdatenbank |
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McPherson, R. J., & Marion, K. R. (1983). Reproductive variation between two populations of sternotherus odoratus in the same geographic area. Journal of Herpetology, 17, 181–184.
Added by: Admin (24 Aug 2008 19:37:34 UTC) Last edited by: Beate Pfau (13 Sep 2008 17:44:51 UTC) |
| Resource type: Journal Article BibTeX citation key: McPherson1983a View all bibliographic details  |
Categories: General Keywords: Fortpflanzung = reproduction, Habitat = habitat, Kinosternidae, Nordamerika = North America, Schildkröten = turtles + tortoises, Sternotherus, Sternotherus odoratus, Systematik = taxonomy Creators: Marion, McPherson Collection: Journal of Herpetology |
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| Abstract |
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Sternotherus odoratus Examination of female S. odoratus in central Alabama revealed that follicular enlargement begins soon after oviposition of the last clutch in July. Yolking of the ovarian follicles continued from Aug.-Dec., until reaching a size not significantly different from spring preovulatory follicles. Ovulation of the 1st clutch occurred during late April, and eggs were found in the oviducts from May-July. Central Alabama females have at least 2 clutches per reproductive season, with many laying 3. Mean clutch size was 2.6 (range 1-6). Clutch size was positively correlated to body size, but there was no significant trend for larger females to produce larger oviducal eggs. Females 1st reached sexual maturity while in the 65-75 mm CL range. Estimated average annual reproductive potential of females laying a maximum of 3 clutches was 7.8 eggs/year. Added by: Admin Last edited by: Beate Pfau |