The probability that a fish matures at a certain age and length (the so-called probabilistic maturation reaction norm, PMRN) was analysed for a European whitefish Coregonus lavaretus species complex population living in the Austrian pre-alpine Lake Irrsee. Fish length was found to be the only relevant determinant of maturation probability, and females matured at slightly smaller sizes than males.

Abstract The fatty acid (FA) compositions of eggs from wild whitefish and captive broodstocks were investigated to estimate the FA requirements Coregonus maraena. aim this study was increase basic knowledge on nutritional needs broodstock. Whitefish two natural spawning grounds compared with that fed three commercially available feeds used in fish farms Mecklenburg-Vorpommern, Germany. Wild dif...

Ecologically, morphologically and genetically distinct populations within single taxa often coexist in postglacial lakes and have provided important model systems with which to investigate ecological and evolutionary processes such as niche partitioning and ecological speciation. Within the Salmonidae, these species complexes have been well studied, particularly within the Coregonus clupeaformi...

A freshwater fish inventory was conducted from March through August, 2002 in the Alagnak Watershed. The objectives of the inventory were (1) to document species that were expected yet undocumented and (2) to provide initial descriptions of the distributions, abundance, and biologic characteristics of these species. Minnow traps, minnow seines, beach seines, snorkel gear, hand nets, fyke nets, t...

The Vygozero Reservoir has the status of a reservoir republican subordination, and fishing there is carried out mainly by fishermen Segezha region Republic Karelia. contributes 3-7% to total volume fish catch in Karelia occupies 5–6 place terms among 12 reservoirs In this regard, problem monitoring populations valuable commercial species urgent at present stage. First all, zander whitefish are ...

Mapping of expression quantitative trait loci (eQTL) is a powerful means for elucidating the genetic architecture of gene regulation. Yet, eQTL mapping has not been applied toward investigating the regulation architecture of genes involved in the process of population divergence, ultimately leading to speciation events. Here, we conducted an eQTL mapping experiment to compare the genetic archit...

investigations of lake umbozero, the second largest and the deepest lake of the murmansk region, were carried out to detect and define biogeochemical patterns of distribution of the chalcophile elements (hg, cd, pb, as) in water, sediments and organs and tissues of whitefishes. lake umbozero is affected by emissions and effluents from mining and metallurgical enterprises of the murmansk region,...

The reconstruction of regional fauna history is very important in the context recent climate change and anthropogenic transformation. We analyzed mitochondrial nd1 gene polymorphism populations whitefish Coregonus lavaretus certain widespread Eurasian ciscoes species: vendace albula least cisco sardinella, inhabiting waterbodies from Anadyr River east (the Pacific Ocean basin) to Loch Lomond we...