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1 October 2008 Field Confirmation of Laboratory-Determined Lower Temperature Tolerance of Transgenic and Wildtype Zebra Danios, Danio Rerio
Cheryl Cortemeglia, Thomas L. Beitinger, James H. Kennedy, Tammie Walters
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Abstract

A transgenic variety (red glofish) of the aquarium fish, zebra danio (Danio rerio) and wildtype zebra danios were exposed to the natural climate of north Texas in four, outside, 10,000-L microcosms during the winter of 2004–2005. At least 13 of 68 fish survived at temperatures as low as 7.5 C; however, none survived a 4 d exposure to 4 C following a cold front. These field results corroborate laboratory findings that the lowest temperature that these two varieties of D. rerio can survive is about 5 C.

Cheryl Cortemeglia, Thomas L. Beitinger, James H. Kennedy, and Tammie Walters "Field Confirmation of Laboratory-Determined Lower Temperature Tolerance of Transgenic and Wildtype Zebra Danios, Danio Rerio," The American Midland Naturalist 160(2), 477-479, (1 October 2008). https://doi.org/10.1674/0003-0031(2008)160[477:FCOLLT]2.0.CO;2
Received: 6 July 2006; Accepted: 1 March 2008; Published: 1 October 2008
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