Factors Influencing the Size Structure of Brook Trout and Brown Trout in Southeastern Wyoming Mountain Streams
نویسندگان
چکیده
منابع مشابه
Mechanisms Limiting a Vertebrate Invasion: Brook Trout in Mountain Streams
I used multiple approaches to study brook trout invasions in mountainous streams of Idaho and Montana, USA. After studying marked fish in experimental reaches and fish distributions throughout a drainage, I concluded that larger brook trout (95mm) moved more than smaller ones and were probably responsible for most dispersal leading to invasion. Contrary to earlier hypotheses, poor swimming abil...
متن کاملSubstrate Alteration by Spawning Brook Trout in a Southeastern Wyoming Stream
-To measure the changes in substrate composition produced by spawning brook trout Salvefinus fontinalis, we collected 187 freeze-core samples, both before and after spawning, from egg pockets, inside redds but excluding egg pockets, and outside redds. In the upper strata of reddassociated samples, we found that the proportions of particles 0.85-1.70,0.425-0.85,0.2 12-0.425, and less than 0.212 ...
متن کاملThe growth of brown trout (Salmo trutta Linn.); factors influencing the growth of trout fry.
It has long been known that brown trout (Salmo trutta Linn.) grow to different sizes in different waters, and there has been much speculation concerning the factors determining these differences. Dahl (1918-19) suggested that the food supply and the degree of crowding were important; also that small, slowly growing trout were derived from smaller ova than those growing more rapidly. Southern (1...
متن کاملGrowth rate differences between resident native brook trout and non-native brown trout
Between species and across season variation in growth was examined by tagging and recapturing individual brook trout Salvelinus fontinalis and brown trout Salmo trutta across seasons in a small stream (West Brook, Massachusetts, U.S.A.). Detailed information on body size and growth are presented to (1) test whether the two species differed in growth within seasons and (2) characterize the seaso...
متن کاملPatterns of hybridization among cutthroat trout and rainbow trout in northern Rocky Mountain streams
Introgressive hybridization between native and introduced species is a growing conservation concern. For native cutthroat trout and introduced rainbow trout in western North America, this process is thought to lead to the formation of hybrid swarms and the loss of monophyletic evolutionary lineages. Previous studies of this phenomenon, however, indicated that hybrid swarms were rare except when...
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ژورنال
عنوان ژورنال: North American Journal of Fisheries Management
سال: 1992
ISSN: 0275-5947,1548-8675
DOI: 10.1577/1548-8675(1992)012<0109:fitsso>2.3.co;2