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Recruitment dynamics and size structure in experimental populations of the mosquitofish, Gambusia affinis



Recruitment dynamics and size structure in experimental populations of the mosquitofish, Gambusia affinis



Copeia ( 1): 216-221



Experimental populations of the cannibalistic livebearer, Gambusia affinis, were exposed to varying degrees of shelter for juveniles vulnerable to cannibalism by adults. High densities of shelter significantly reduced the effects of cannibalism and effectively maintained reproducing populations throughout the experiment (380 days). Population densities continuously declined in medium and low refuge density treatments due to a lack of recruitment. The size distributions of fish in these treatments narrowed with time, although the rate at which this occurred was greater in the low refuge density treatment.

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Accession: 003542646

Download citation: RISBibTeXText

DOI: 10.1643/0045-8511(2000)2000[0216:rdassi]2.0.co;2



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