RE: NANFA-- killie geek question

Hoover, Jan J ERDC-EL-MS (
Sun, 3 Aug 2003 22:53:33 -0500

Nick asks:
>>>What is an average life span of a blackstriped topminnow? I have had
mine for
two years now and all of a sudden I had two dead in the last week.<<<

Jan replies:
Braasch and Smith (Copeia 1965: 46-53) found two size groups in Illinois
populations sympatric with blackspotted topminnow. This suggests a natural
lifespan of 2 or 3 years. Size structure was different between allopatric
and sympatric populations, however, and maximum sizes different from those
of other populations, suggesting that life histories varied in different
parts of the range.
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