Compensatory response ‘defends’ energy levels but not growth trajectories in brown trout, Salmo trutta L.
نویسندگان
چکیده
منابع مشابه
Density-Dependent Compensatory Growth in Brown Trout (Salmo trutta) in Nature
Density-dependence is a major ecological mechanism that is known to limit individual growth. To examine if compensatory growth (unusually rapid growth following a period of imposed slow growth) in nature is density-dependent, one-year-old brown trout (Salmo trutta L.) were first starved in the laboratory, and then released back into their natural stream, either at natural or at experimentally i...
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...
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Despite being genetically very closely related, the marble trout Salmo marmoratus and the brown trout Salmo trutta exhibit marked phenotypic differences, particularly with regard to skin pigmentation. Histological analysis of skin from the head and gill cover of differently aged individuals of the two species was carried out in order to characterize differences in skin structure. The basic stru...
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The length-weight relationship, age, growth parameters, sex ratio, mortality and exploitation rate of Salmo trutta fario were determined in Lar dam. The sex ratio (male: female) was 1:1.84 which differed significantly from the expected 1:1. The length-weight regression was (females) and (males) indicating a negative allometric growth for both sexes. Growth parameters were estimated as L∞ = ...
متن کاملSingle and joint gene segregation in intraspecific ž / hybrids of brown trout Salmo trutta L. lineages
Ž . Brown trout Salmo trutta L. stocking practices in French Mediterranean rivers often result in artificial secondary contact and introgression between substantially differentiated genomes. Single and joint segregation at five protein and four microsatellite loci were analysed in two back-crosses Ž . between hybrid females resulting from domestic=Mediterranean genitors and hatchery males in or...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society B: Biological Sciences
سال: 2005
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2004.2991