Sei whale (Balaenoptera borealis)

Species >> Sei whale (Balaenoptera borealis)

Muscle serves a wide variety of mechanical functions during animal feeding and locomotion, but the performance of this tissue is limited by how far it can be extended. In rorqual whales, feeding and locomotion are integrated in a dynamic process called lunge feeding, where an enormous volume of prey-laden water is engulfed into a capacious ventral oropharyngeal cavity that is bounded superficially by skeletal muscle and ventral groove blubber (VGB).

Hybridisation of an human Y chromosome clone (pDP 1007) with Eco RI restricted DNA from male and female humpback whales revealed restriction-fragment patterns similar to those previously reported in other placental mammals. The sex-specificity of these restriction fragments in humpback whales was verified using DNA from necropsy samples of 11 individuals from the Southern Gulf of Maine. Necropsy samples from a fin (Balaenoptera physalus), a sei (B.

As part of the Bering Sea Project, cetacean surveys were conducted to describe distribution and estimate abundance on the eastern Bering Sea shelf. Three marine mammal observers conducted visual surveys along transect lines sampled during the Alaska  Fisheries Science Center walleye pollock assessment survey in June and July of 2008 and 2010.

An emerging theme in animal and human health-related research is that associated microbial communities or 'microbiomes' play vital and active roles in maintaining normal functioning and health. Yet, very little attention has been paid towards understanding the microbiomes of marine mammals. The skin microbiome of humpback whales was recently shown to contain a core community of two main bacterial genera that are maintained across populations and ocean environments.

Ship strikes of large whales cause mortalities worldwide, but there is uncertainty regarding the frequency and species involved. We examined 130 records (from 1980–2006) of large whale strandings in Washington State. Nineteen strandings (seven species) had evidence of ship-strikes. Fin whales (Balaenoptera physalus) had the highest incidence of ante-mortem ship strike (five of seven, with the remaining two possibly post-mortem) and all but one occurring since 2002.