Results 61 to 70 of about 12,611 (204)

Contemporary effective population and metapopulation size (Ne and meta‐Ne): comparison among three salmonids inhabiting a fragmented system and differing in gene flow and its asymmetries

Ecology and Evolution, 2013
We estimated local and metapopulation effective sizes (N^e and meta‐N^e) for three coexisting salmonid species (Salmo salar, Salvelinus fontinalis, Salvelinus alpinus) inhabiting a freshwater system comprising seven interconnected lakes.
Daniel Gomez‐Uchida, Friso P. Palstra, Thomas W. Knight, Daniel E. Ruzzante   +3 more
doaj   +1 more source

Paleogeography of Human Settlement at Iqaluktuuq, Victoria Island, Nunavut

Geosciences, 2022
Change in sea levels, be they isostatic or eustatic, impact humans and the paleogeography they inhabit. In this paper we examine paleogeography at Iqaluktuuq, a section of the Ekalluk River, Victoria Island, Nunavut, between Tahiryuaq (Ferguson Lake) and
Julie M. Ross, T. Max Friesen
doaj   +1 more source

Speciation of European bullheads (Cottus spp.): The next problem for taxonomy of northern freshwater fishes

Journal of Fish Biology, EarlyView.
Abstract High morphological and ecological diversity displayed by European bullheads led Freyhof et al. (2005) to describe 15 nominal species. However, the basis for declaring these nominal species is contentious due to a lack of rigorous statistical analysis of morphological variations among populations, limitations in the inferences made from ...
David S. Murray, Vladimír Kováč, David Wright, Gordon H. Copp   +3 more
wiley   +1 more source

Genetic Diversity and Hybridisation between Native and Introduced Salmonidae Fishes in a Swedish Alpine Lake. [PDF]

PLoS ONE, 2016
Understanding the processes underlying diversification can aid in formulating appropriate conservation management plans that help maintain the evolutionary potential of taxa, particularly under human-induced activities and climate change.
Leanne Faulks, Örjan Östman
doaj   +1 more source

First Report of the Malacosporean Parasite Tetracapsuloides bryosalmonae in the Faroe Islands Reveals Widespread Distribution and High Prevalence in Brown Trout

Journal of Fish Diseases, EarlyView.
ABSTRACT The myxozoan endoparasite Tetracapsuloides bryosalmonae (Tb), the causative agent of proliferative kidney disease (PKD) in salmonids, has predominantly been reported in temperate regions of continental Europe and North America. Here, we present the first record of Tb in the Faroe Islands, extending the known northern distribution of the ...
Magnus Lauringson, Lilian Pukk, Leivur Janus Hansen, Anti Vasemägi   +3 more
wiley   +1 more source

Histological structure of the skin of Arctic charr, Salvelinus alpinus (L.) from Spitsbergen [PDF]

Acta Ichthyologica et Piscatoria, 2004
Background. Like in most salmonids, females of Artic charr dig nests, while spawning, to deposit their eggs, while the role of males is most often limited to the territorial defence. The aim of this study was to examine the histological structure of skin
A. Witkowski, K. Kaleta, J. Kuryszko, J. Kusznierz   +3 more
doaj   +3 more sources

Reservoirs and radiocarbon: ¹⁴C dating problems in Myvatnssveit, Northern Iceland [PDF]

, 2007
This paper examines 2 potential sources of the radiocarbon offset between human and terrestrial mammal (horse) bones recovered from Norse (~AD 870–1000) pagan graves in Mývatnssveit, north Iceland.
Ascough, P.L., Church, M.J., Cook, G.T., Dugmore, A.J., Dunbar, E., Einarsson, E., Frioriksson, A., Gestsdottir, H., McGovern, T.G.   +8 more
core  

Proliferative Kidney Disease and Viral Pathogens in Wild Brown Trout (Salmo trutta) Populations in the Czech Republic

Journal of Fish Diseases, EarlyView.
ABSTRACT Populations of wild brown trout (Salmo trutta) have been in long‐term decline across Central Europe, including the Czech Republic, with multiple factors, such as habitat alteration, climate change, predation and emerging diseases, implicated.
Miroslava Palíková, Ivana Mikulíková, Tomáš Doležal, Ivana Papežíková, Kateřina Matějíčková, Jitka Motlová, Hana Novotná, Ivona Toulová, Jan Grmela, Anna Šindelářová, Ľubomír Pojezdal   +10 more
wiley   +1 more source

Systematics of Beringian threespine sticklebacks [PDF]

, 2000
Thesis (M.S.) University of Alaska Fairbanks, 2000In Pleistocene Beringia, large-scale glaciations exposed high latitude species to variable environmental conditions that created disjunct populations of terrestrial and marine species.
Chythlook, John S.
core  

Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time [PDF]

, 2017
Artificial stocking practices are widely used by resource managers worldwide, in order to sustain fish populations exploited by both recreational and commercial activities, but their benefits are controversial. Former practices involved exotic strains,
Caudron, A., Champigneulle, A., Dubey, S., Dufresnes, C., Fumagalli, L., Perrin, N., Savary, R.   +6 more
core   +5 more sources