Killer Whales
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Study on the polymorphism of POU1F1 gene in sheep
ABSTRACT In this study, POU1F1 gene polymorphism was detected in five sheep populations (large-tailed Han, small-tailed Han, Yuxi fat-tailed, Lanzhou large-tailed, and Mongolian sheep), using DNA pooling and sequencing, to provide theoretical basis for the breeding of excellent sheep varieties. Three single-nucleotide polymorphism (SNP) loci of POU1F1 gene w
R. Bras. Zootec.. Publicado em: 2016-10
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2. Getting to know you: Identification of pygmy killer whales (Feresa attenuata) and melon-headed whales (Peponocephala electra) under challenging conditions
Resumo A orca-pigmeia (Feresa attenuata) era conhecida por poucos registros há não mais que 60 anos atrás, mas, apesar do número de registros ter crescido recentemente em todos os oceanos tropicais, F. attenuata é ainda considerada uma espécie pouco estudada. No Brasil, mesmo em base a um pequeno número de registros, presume-se sua distribuição como
Braz. j. oceanogr.. Publicado em: 2015-12
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3. Interações entre orcas Orcinus orca (Linnaeus, 1758) e falsas orcas Pseudorca crassidens (Owen, 1846) com a pesca de espinhel pelágico monofilamento no Atlântico Oeste Tropical.
Desde a década de 50, a indústria pesqueira vem sofrendo perdas provocadas por cetáceos, em todos os oceanos, com diferentes níveis de intensidade, num comportamento denominado pelos especialistas como depredação, que ocorre quando esses animais se alimentam do peixe capturado pela arte de pesca. Orcas verdadeiras têm sido citadas como as que exibem e
Publicado em: 2007
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4. Causes and consequences of marine mammal population declines in southwest Alaska: a food-web perspective
Populations of sea otters, seals and sea lions have collapsed across much of southwest Alaska over the past several decades. The sea otter decline set off a trophic cascade in which the coastal marine ecosystem underwent a phase shift from kelp forests to deforested sea urchin barrens. This interaction in turn affected the distribution, abundance and product
The Royal Society.
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5. Sequential megafaunal collapse in the North Pacific Ocean: An ongoing legacy of industrial whaling?
Populations of seals, sea lions, and sea otters have sequentially collapsed over large areas of the northern North Pacific Ocean and southern Bering Sea during the last several decades. A bottom-up nutritional limitation mechanism induced by physical oceanographic change or competition with fisheries was long thought to be largely responsible for these decli
National Academy of Sciences.