Brook Trout (Salvelinus fontinalis) Habitat use and Dispersal Patterns in New York Adirondack Mountain Headwater Streams

2013 ◽  
Vol 20 (1) ◽  
pp. 19-36
Author(s):  
Justin Ecret ◽  
Timothy B. Mihuc
Keyword(s):  
New York ◽  
Habitat Use ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Headwater Streams ◽  
Dispersal Patterns ◽  
Adirondack Mountain

Production of Wild, Domestic, and Interstrain Hybrids of Brook Trout (Salvelinus fontinalis) in Natural Ponds

1976 ◽  
Vol 33 (7) ◽  
pp. 1525-1539 ◽  
Author(s):  
William A. Flick ◽  
Dwight A. Webster
Keyword(s):  
New York ◽  
Economic Evaluation ◽  
Life Span ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
James Bay ◽  
Natural Lakes ◽  
Wild Strains ◽  
Survival And Growth ◽  
Adirondack Mountain

Hatchery-reared wild and domestic strains of brook trout (Salvelinus fontinalis) were released in natural lakes, and survival and growth estimated at semiannual intervals throughout the life span. Angling was restricted. Four experiments with two year-classes involved three different Adirondack Mountain (New York) wild strains and two domestic strains, a fifth experiment included two wild strains from James Bay, Quebec and a hybrid between one of these (Assinica Lake) and a New York domestic strain. Wild and hybrid strains consistently exhibited greater longevity (5–7 yr) compared with domestic (few recovered after 3 yr). Climax sizes were not much different, except the Domestic × Assinica hybrid that was substantially larger than either of the two parents. Gross production and yield to angling of any given strain cohort was correlated (r = 0.93) and life-span gross production was 50% greater for wild and hybrid groups per unit fish stocked. Biomass stocked per recruit was much larger for domestic strains, and taking this into account, the ratio of gross production to weight stocked was about 6 times greater. Increased costs of rearing nondomesticated strains, if any, must be taken into consideration in an economic evaluation, but use of wild and/or hybrid strains of trout offers significant benefits under management conditions of these experiments.

Performance of Indigenous, Exotic, and Hybrid Strains of Brook Trout (Salvelinus fontinalis) in Waters of the Adirondack Mountains, New York

1981 ◽  
Vol 38 (12) ◽  
pp. 1701-1707 ◽  
Author(s):  
Dwight A. Webster ◽  
William A. Flick
Keyword(s):  
New York ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Hybrid Vigor ◽  
Superior Performance ◽  
Adirondack Mountains ◽  
Wild Strains ◽  
Early Fall ◽  
Survival And Growth ◽  
Wild Trout

Eleven year-classes of wild, domestic, and wild × domestic hybrid strains of brook trout (Salvelinus fontinalis) were stocked in a 0.19-ha Adirondack pond. Comparative survival and growth were assessed upon drainage in early fall. Rearing native wild strains to maturity in a hatchery, or domestic strains in a natural environment, did not consistently or materially affect survival of progeny, suggesting that superior performance of wild strains was largely inherent. Interstrain hybrids of wild × domestic showed survivals equivalent to the wild parents, but hybrids of two Canadian strains gave evidence of heterosis in both survival and net yield. Supplementary observations in other waters also indicated that one strain (Assinica) may be less adaptable to Adirondack conditions than the other (Temiscamie).Key words: brook trout, wild trout, domesticated trout, interstrain hybrid trout, survival, growth, heterosis, hybrid vigor

Survival, Growth, Reproduction, and Diet of Brook Trout (Salvelinus fontinalis) Stocked into Lakes after Liming to Mitigate Acidity

1989 ◽  
Vol 46 (2) ◽  
pp. 277-286 ◽  
Author(s):  
Steven P. Gloss ◽  
Carl L. Schofield ◽  
Robert L. Spateholts ◽  
Barbara A. Plonski
Keyword(s):  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Acid Tolerance ◽  
Mountain Lakes ◽  
Low Velocity ◽  
Growth And Survival ◽  
Population Loss ◽  
Natural Reproduction ◽  
Woods Lake ◽  
Adirondack Mountain

Brook trout (Salvelinus fontinalis) were stocked into two previously acidic (pH 4.5–5.2) Adirondack Mountain lakes, Woods Lake and Cranberry Pond, following liming in June, 1985. Age 0+ Temiscamie × Domestic hybrid brook trout were stocked at 200∙ha−1 with one-half of the fish selected for presumed acid tolerance. Age 1+ Temiscamie strain brook trout were also stocked at 50∙ha−1. Liming increased pH to well above 7 and alkalinity to over 200 μeq∙L−1. Growth and condition of stocked fish were good while water quality conditions remained suitable. However, in Cranberry Pond, which reacidified 6 mo after liming, both growth and survival declined dramatically. Much of the population loss was due to emigration. Annual survival in Woods Lake averaged 35 and 25% for the age 0+ and 1+ fish, respectively. Initially large invertebrates made up most of the diet for stocked fish. These taxa were replaced by zooplankton within a few months. Limited natural reproduction was associated with low velocity groundwater inflows and high acidity in tributary streams. Fry emergence from artificial spawning substrates placed in Woods Lake peaked well after snowmelt inflows which produced toxic conditions in littoral areas.

A major sextet of mitochondrial DNA phylogenetic assemblages extant in eastern North American brook trout (Salvelinus fontinalis): distribution and postglacial dispersal patterns

1998 ◽  
Vol 76 (7) ◽  
pp. 1300-1318 ◽  
Author(s):  
Roy G Danzmann ◽  
Raymond P Morgan II ◽  
Matthew W Jones ◽  
Louis Bernatchez ◽  
Peter E Ihssen
Keyword(s):  
Mitochondrial Dna ◽  
Brook Trout ◽  
Lake Trout ◽  
Salvelinus Fontinalis ◽  
Salvelinus Alpinus ◽  
Large Degree ◽  
Dispersal Patterns ◽  
Small Stream ◽  
South Central ◽  
Haplotype 1

Mitochondrial DNA (mtDNA) restriction fragment length polymorphisms (RFLPs) of 2422 brook trout (Salvelinus fontinalis) from 60 units (major drainages, small stream catchments, and isolated lakes) representing 155 populations in eastern North America were examined to test hypotheses regarding postglacial dispersal and recolonization. An analysis of molecular variance (AMOVA) indicated that 38.8% of the variation was partitioned among the units, while approximately 60% was distributed among populations (phiST = 59.3) compared with 40.7% within populations. This distribution of variation suggests a large degree of heterogeneity in population founding events and phylogeographic structuring in this species. Comparisons of mtDNA diversity between fish from putative refugial and recolonization zones for this species indicate that more than one refugial region contributed to northern recolonization. Haplotypic diversities in recolonized regions are greatest in south-central populations (i.e., southern Great Lakes region), while only one haplotype (haplotype 1) predominates in northern, western, and eastern postglacial zones. Large phylogenetic differences were found between northern and southern populations. Populations outside the zone of glaciation were the most genetically heterogeneous and were represented by fish from all six (A-F) of the major evolutionary clades identified. Only fish from the A, B, and C clades were found in glaciated regions, with C lineage fish restricted to south-central glaciation zones. Fish from the C clade are putatively the most ancestral lineage within the species based upon composite shared RFLPs with lake trout (Salvelinus namaycush) and Arctic char (Salvelinus alpinus).

Sign in / Sign up

Export Citation Format

Share Document