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Movement, Home Range, and Growth of a Rare Southwestern Trout in Improved and Unimproved Habitats
Author(s) -
Rinne John N.
Publication year - 1982
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8659(1982)2<150:mhrago>2.0.co;2
Subject(s) - streams , trout , salmo , fishery , habitat , fish <actinopterygii> , endangered species , range (aeronautics) , environmental science , geography , ecology , biology , computer network , materials science , computer science , composite material
Data collected on 129 recaptured Gila trout (Salmo gilae) in three streams on the Gila National Forest, New Mexico, indicated that this endangered trout tended to stay near home (mean movement < 0.1 km) and grew less, both in streams containing larger fish populations and streams containing log improvement structures, than in other streams. Those fish that moved went greater distances downstream. Few fish (<2%) moved upstream over habitat‐improvement structures, and such movement was limited by structures [greater than or equal to]0.5 m high. In one intermittent stream, these fish oriented to permanent‐water reaches. Future introductions of this rare trout should be in headwater areas, and habitat improvement should be done with a conservative number of low (0.5 m) structures.