Results 271 to 280 of about 1,230,885 (341)
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Habitat shifts in rainbow trout: competitive influences of brown trout
Oecologia, 1987We compared habitat use by rainbow trout sympatric (three streams) and allopatric (two streams) with brown trout to determine whether competition occurred between these two species in the southern Appalachian Mountains. We measured water depth, water velocity, substrate, distance to overhead vegetation, sunlight, and surface turbulence both where we ...
A J, Gatz, M J, Sale, J M, Loar
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Larger eggs in resident brown trout living in sympatry with anadromous brown trout
Ecology of Freshwater Fish, 1999Abstract– Freshwater resident brown trout (Salmo trutta L.) in the stream Jorlandaan (southwestern Sweden) had larger eggs (range of actual mean egg wet weights, 65.9–108.5 mg) than both sympatric migratory trout (76.8–84.2 mg) and trout from five other Swedish streams with allopatric resident (23.7–80.1 mg) or migratory populations (44.5–121.9 mg ...
H. Olofsson, H. Mosegaard
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Quantitative Ecology and the Brown Trout
Transactions of the American Fisheries Society, 1994Abstract Covering not only brown trout, but also their close relatives, this book provides valuable information which is also relevant to animal ecology. The book highlights the global success of the species and provides a long-term case study of population dynamics of one population.
P. S. Maitland, J. M. Elliott
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Nature, 1947
Xanthophylls, and less frequently carotenes, have been identified in the skin of many species of fish, and are the usual pigments of the xanthophore cells1. The properties of these carotenoids, however, do not recommend them as the pigments of the red erythrophores, which are a prominent feature of the colour pattern of many Salmonidae.
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Xanthophylls, and less frequently carotenes, have been identified in the skin of many species of fish, and are the usual pigments of the xanthophore cells1. The properties of these carotenoids, however, do not recommend them as the pigments of the red erythrophores, which are a prominent feature of the colour pattern of many Salmonidae.
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Comparative Susceptibility of Brown Trout and Rainbow Trout to Discocotyle sagittata (Monogenea)
Journal of Parasitology, 2004The susceptibility of brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) to the monogenean Discocotyle sagittata in the United Kingdom was assessed by experimental infection of naive fish. One month postinfection with 100 oncomiracidia/host, brown trout harbored significantly lower burdens (27.7 worms/host +/- 4.13 SE) than rainbow ...
Rubio-Godoy, Miguel, Tinsley, Richard C.
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Nature, 1967
The Trout By W. E. Forst and M. E. Brown. (The New Naturalist.) Pp. 286 + 46 plates. (London: William Collins, Sons and Co., Ltd., 1967.) 25s. net.
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The Trout By W. E. Forst and M. E. Brown. (The New Naturalist.) Pp. 286 + 46 plates. (London: William Collins, Sons and Co., Ltd., 1967.) 25s. net.
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Performance and Developmental Stability of Triploid Tiger Trout (Brown Trout ♀ X Brook Trout ♂)
Transactions of the American Fisheries Society, 1987Abstract Triploid fish hybrids frequently survive better than diploid hybrids. Tiger trout are a sterile hybrid between female brown trout Salmo trutta and male brook trout Salvelinus fontinalis; they have a poor early survival rate but a good growth rate.
Paul D. Scheerer +2 more
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Energy allocation in polymorphic Brown Trout
Functional Ecology, 19971. To evaluate differences in energy allocation to gonadal development of resident and anadromous Brown Trout, Salmo trutta, we analysed tissue composition and energy contents of adults of the two morphs from three small streams in southernmost Norway. Somatic energy per unit mass of anadromous spawners (5·0 ± 0·6 kJ g–1 wet weight) was 1·1 times that
N. JONSSON, B. JONSSON
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Fin Regeneration in Brown Trout
Transactions of the American Fisheries Society, 1943Abstract In recent years, fin-clipping has become a widely-used method of distinctively marking fish for future identification. A check on possible regeneration in this type of marking is desirable. The following paper presents data on the clipping of ventral fins of yearling brown trout for two successive years.
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