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Seasonal Activity and Movements of Necturus in Louisiana
C. Robert Shoop and Gerald E. Gunning
Vol. 1967, No. 4 (Dec. 8, 1967), pp. 732-737
Stable URL: http://www.jstor.org/stable/1441882
Page Count: 6
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The seasonal activity and movements of Necturus maculosus louisianensis and N. b. beyeri were studied in Louisiana from 1959 to 1962 and again in December 1965 and January 1966. Cover preferences were similar in both forms, the animals usually being found in and around obstructions in streams; both species are active throughout the year. There was a negative correlation between fish activity and foraging away from cover by both species. There was no indication of summer dormancy. Fifteen N. beyeri were recaptured within 215 ft of their original capture and release point after up to 724 days. Twenty-three N. maculosus were captured within 840 ft of their original capture point after up to 2089 days. Of 33 N. maculosus displaced downstream, four were recaptured near the release area; one animal returned to its previous capture point. Most of the displaced animals headed upstream instead of seeking shelter as do animals released near original capture sites.