Tropical species face greater threat from warming in tropics
A Costa Rica based study led by Robert K Colwell of the University of Connecticut warns that tropical insects and other lowland species near their thermal limit may attrit under a 5.8 F warming over a century. To escape heat they may move uphill or shift ranges, but many mountaintop species have nowhere higher to go.
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Washington
Tropics
Costa Rica
Robert K. Colwell
University of Connecticut
Aone
Escoee Eee
Colwell
Virgin birth confirmed in second shark parthenogenesis case
Scientists report DNA testing shows a female Atlantic blacktip shark at the Virginia Aquarium produced a nearly full term pup without male genetic material. The Tidbit case follows a prior Omaha zoo hammerhead parthenogenesis, suggesting some female sharks can reproduce asexually.
MENTIONED IN THIS ARTICLE
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Journal of Fish Biology
Virginia Aquarium & Marine Science Center
Omaha
Neb
Demian Chapman
Chapman
Tidbit
Virginia Beach Aquarium
Aquarium
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