A 21-Year Study of Seasonal and Interspecific Variation of Hatchling Emergence in a Nearctic Freshwater Turtle Community: To Overwinter or Not To Overwinter?
作者： Jeffrey E. Lovich , Carl H. Ernst , Evelyn M. Ernst , Julia L. Riley
DOI: 10.1655/HERPMONOGRAPHS-D-14-00001
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摘要: Abstract: Hatchling emergence patterns were studied in a community of six species freshwater turtles Lancaster County, Pennsylvania, USA, including: Chelydra serpentina, Chrysemys picta, Clemmys guttata, Glyptemys insculpta, muhlenbergii, and Sternotherus odoratus. Data collected every year from 1965–1985 on estimated date emergence, carapace length, April–May precipitation, August–September annual low temperature occurrence precipitation during the 24 h prior to time each hatchling detection (n = 806). Ch. Cl. guttata hatchlings have facultative delayed strategy. The other (G. G. S. odoratus) appear be obligate early emergers, with exception one muhlenbergii that emergence. Early occurred some year. However, majority until following oviposition, excep...
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