Reproduction and development in the dwarf form of Arctic charr Salvelinus alpinus from Lake Davatchan, Transbaikalia

  title={Reproduction and development in the dwarf form of Arctic charr Salvelinus alpinus from Lake Davatchan, Transbaikalia},
  author={Dimitri A. Pavlov and Alexander G. Osinov},
  journal={Journal of Ichthyology},
Biological characteristics in the deepwater dwarf form of Arctic charr Salvelinus alpinus from Lake Davatchan, Transbaikalia, are described. In nine from fifteen attempts of artificial insemination of eggs from a female by sperm from a male, developing eggs are obtained. Embryonic and larval development is described at the initial temperature 1.6–3.6°C and subsequent (from early gastrulation to the transition of larvae to exogenous feeding) average temperature 4.4 and 8.6°C. To take into… 

Morphological and Ecological Differentiation of Sympatric Forms of Arcrtic Charr Salvelinus alpinus (Salmonidae) in Lake Tokko (Northern Transbaikalia)

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Overall, reproductive patterns of Transbaikalian charr vary greatly in spawning time, duration, location, depth, and bottom substrate, and is correlated with morphological and genetic differences.

Late ontogeny growth acceleration and size form transformations in Transbaikalian Arctic charr, Salvelinus alpinus complex: evidence from fin ray cross section growth layers

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Parallel evolutionary divergence in Arctic char Salvelinus alpinus complex from Transbaikalia: variation in differentiation degree and segregation of genetic diversity among sympatric forms

Gene diversity and allelic richness of form populations are positively correlated with lake size and negatively correlated with modal length of mature fish, so that the dwarf form typically has the highest, and the large form, the lowest indices of genetic variation.

Annual Temperatures and Dynamics of Food Availability are Associated with the Pelagic-Benthic Diversification in a Sympatric Pair of Salmonid Fish

Fish diversification into sympatric ecomorph pairs demonstrates a striking parallelism across a number of taxa in numerous lakes. However, there is a dearth of information on environmental

Variation in egg size and offspring phenotype among and within seven Arctic charr morphs

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Characterizing neutral and adaptive genomic differentiation in a changing climate: The most northerly freshwater fish as a model

Overall, neutral and adaptive genomic differentiation between allopatric and some sympatric morphs suggests that the response of Arctic charr to climate change will be variable across freshwater ecosystems.

Convergence in form and function overcomes non-parallel evolutionary histories in Arctic charr

A spectrum of predictability is demonstrated, from low parallelism at the nucleotide level to high parallelism in regulatory molecular bases and functional adaptive aspects of morphology, and the understanding of parallel evolution through divergent evolutionary routes is advanced.



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Polymorphism and speciation in Arctic charr

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The discovered population of Arctic charr in Lake Baikal basin is the only one among Transbaikalian charr populations, that, due to its remoteness, has not been affected by man and can be considered as an etalon of an undisturbed natural charr population.

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The results indicate that piscivorous and planktivorous charr belong to the same gene pool; piscive charr are probably recruited from the most fast-growing planktIVorous individuals and start feeding on fish at a length of 23 cm.

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The rearing experiments support the view that the dwarf and normal charr forms are inherited characteristics of one population, since any individual progeny cannot be assigned to a certain form according to its size and age at maturity.

The Relationship between Egg Size and the Rate of Early Development in Arctic charr, Salvelinus alpinus

Time of hatching has often been used as a principal measurement for rate of development in fish, but the results suggest that this should be discontinued, since it is poorly correlated with the rates of development of other early life history features.

Segregation in spawning and early life history among polymorphic Arctic charr, Salvelinus alpinus, in Thingvallavatn, Iceland

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