Structural variation as related to the ecology of the redside shiner Richardsonius balteatus (Richardson) (Richard)
R. balteatus is extremely variable in number of anal rays. Counts of over 4000 specimens from 54 localities in British Columbia varied from 10 to 21, with differences between means of different populations, different year classes and sometimes between the sexes. Variation is shown to be controlled a...
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| Language: | English |
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University of British Columbia
2012
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| Online Access: | http://hdl.handle.net/2429/41458 |