Climate warming and reproduction in Chinese alligators

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dc.contributor.author Zhang, F
dc.contributor.author Li, Y
dc.contributor.author Guo, Z
dc.contributor.author Murray, BR
dc.date.accessioned 2010-05-28T09:43:56Z
dc.date.issued 2009
dc.identifier.citation Animal Conservation, 2009, 12 (2), pp. 128 - 137
dc.identifier.issn 1367-9430
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/8546
dc.description.abstract The Chinese alligator Alligator sinensis is a critically endangered species endemic to China, and one of the most endangered crocodilian species in the world. Like many other reptiles, important aspects of alligator biology such as foraging, timing of hibernation, breeding and the sex ratio of offspring are all affected by temperature variation. We examined the effects of long-term temperature change on oviposition dates and clutch sizes of the Chinese alligator in a semi-natural facility in southern China. Our study focused on two captive generations including an old breeding generation captured from the wild and a generation composed of their F1 offspring. Median oviposition date shifted to earlier in the year and mean clutch size was larger for both generations as the monthly mean air temperature in April increased over the 19 years of data collection. We observed a mean advance in oviposition date of 10days for the old breeding generation from 1987 to 2005 and 8 days for both generations from 1991 to 2005. Correspondingly, clutch sizes for the two generations also increased during this period. There were no differences in median oviposition dates and clutch sizes between the two generations from 1991 to 2005. Our results suggest that Chinese alligators have responded to increasing global temperatures. Our findings also suggest that recent increasing global temperatures have the potential to have a substantial effect on Chinese alligator populations in the wild, thus prompting an urgent need for field monitoring of the effects of global warming on this endangered alligator species. © Journal compilation © 2009 The Zoological Society of London.
dc.language eng
dc.relation.isbasedon 10.1111/j.1469-1795.2009.00232.x
dc.title Climate warming and reproduction in Chinese alligators
dc.type Journal Article
dc.description.version Published
dc.parent Animal Conservation
dc.journal.volume 2
dc.journal.volume 12
dc.journal.number 2 en_US
dc.publocation Malden en_US
dc.identifier.startpage 128 en_US
dc.identifier.endpage 137 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0608 Zoology
dc.personcode 010046
dc.percentage 100 en_US
dc.classification.name Zoology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity ISI:000264378600008 en_US
dc.description.keywords Chinese alligators
dc.description.keywords Climate warming
dc.description.keywords Clutch size
dc.description.keywords Conservation
dc.description.keywords Oviposition date
dc.description.keywords Phenology
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history School of the Environment (ID: 344)
utslib.collection.history Closed (ID: 3)


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