Vocalizations of common minke whales (Balaenoptera acutorostrata) in an eastern North Pacific feeding ground

2018 ◽  
Vol 144 (3) ◽  
pp. 1952-1952
Author(s):  
Jared Towers ◽  
Katrina Nikolich
Keyword(s):  
North Pacific ◽  
Balaenoptera Acutorostrata ◽  
Feeding Ground ◽  
Minke Whales

scholarly journals Sexual Dimorphism in Pelvic Bone Shape of the North Pacific Common Minke Whales (<i>Balaenoptera acutorostrata</i>)

2016 ◽  
Vol 06 (02) ◽  
pp. 131-136 ◽  
Author(s):  
Naoko Miyakawa ◽  
Toshiya Kishiro ◽  
Yoshihiro Fujise ◽  
Gen Nakamura ◽  
Hidehiro Kato
Keyword(s):  
Sexual Dimorphism ◽  
North Pacific ◽  
Pelvic Bone ◽  
Balaenoptera Acutorostrata ◽  
The North ◽  
Minke Whales ◽  
The North Pacific

The acoustic ecology and behavior of minke whales (Balaenoptera acutorostrata) near tropical and subtropical North Pacific Islands.

2010 ◽  
Vol 128 (4) ◽  
pp. 2414-2414
Author(s):  
Thomas Norris ◽  
Tina M. Yack ◽  
Stephen Martin ◽  
Julie N. Oswald ◽  
Amanda J. Cummins ◽  
...  
Keyword(s):  
North Pacific ◽  
Pacific Islands ◽  
Acoustic Ecology ◽  
Balaenoptera Acutorostrata ◽  
Minke Whales ◽  
And Behavior

Corneal anatomy of marine mammals

1993 ◽  
Vol 71 (11) ◽  
pp. 2282-2290 ◽  
Author(s):  
M. T. Pardue ◽  
J. G. Sivak ◽  
K. M. Kovacs
Keyword(s):  
Marine Mammals ◽  
Equatorial Region ◽  
Balaenoptera Acutorostrata ◽  
Marine Habitat ◽  
Corneal Surface ◽  
Balaenoptera Physalus ◽  
Phoca Groenlandica ◽  
Minke Whales ◽  
Transmission Electron ◽  
Ultrathin Sections

The corneal anatomy of fin whales (Balaenoptera physalus), minke whales (Balaenoptera acutorostrata), harp seals (Phoca groenlandica), ringed seals (Phoca hispida), and bearded seals (Eriganthus barbatus) was examined to determine if marine mammals have evolved specialized corneas for life in a marine habitat. One to seven eyes of each species were analyzed: paraffin sections stained with haematoxylin and eosin for light microscopy; and ultrathin sections for transmission electron microscopy. All corneas contain the five typical mammalian layers: epithelium, Bowman's layer, stroma, Descemet's membrane, and endothelium. The corneas of these marine mammals are thicker than human corneas because of a thicker stromal layer. The other layers are thinner than those found in humans, except for the epithelial layer in the bearded seal and the cetaceans where it may provide extra protection for the eye during feeding behaviour. The epithelial cells in all corneas studied have an abundance of tonofilaments, which may strengthen the cells and distribute force across the corneal surface. No special organization of collagen fibrils was found in the stroma that would offer protection from ultraviolet radiation or glare for pinnipeds when on ice. The thickness of the sclera in the cetaceans may serve to hold the inner globe of the eye in an elliptical shape, while the thinning of the sclera in the equatorial region in pinnipeds may flatten the eye in air to reduce aerial myopia.

scholarly journals A Multi-elemental Approach to Identification of Subpopulations of North Atlantic Minke Whales Balaenoptera Acutorostrata

2007 ◽  
Vol 13 (1) ◽  
pp. 84-97 ◽  
Author(s):  
Erik W. Born ◽  
Michael C. S. Kingsley ◽  
Frank F. Rigét ◽  
Rune Dietz ◽  
Per Møller ◽  
...  
Keyword(s):  
North Atlantic ◽  
Balaenoptera Acutorostrata ◽  
Minke Whales

scholarly journals Do minke whales (Balaenoptera acutorostrata) digest wax esters?

1995 ◽  
Vol 74 (5) ◽  
pp. 717-722 ◽  
Author(s):  
Erling S. Nordøy
Keyword(s):  
Energy Density ◽  
Dry Matter ◽  
General Pattern ◽  
Dry Mass ◽  
Wax Esters ◽  
Gut Contents ◽  
Wax Ester ◽  
Balaenoptera Acutorostrata ◽  
Minke Whales

Mammals are known to utilize wax esters with an efficiency of less than 50%. The purpose of the present study was to examine whether or not minke whales (Balaenoptera acutorostrata), which at times may eat considerable amounts of wax-ester-rich krill, represent an exception to this general pattern. Samples of fresh undigested forestomach, as well as colon, contents were obtained from minke whales (n5) that had been feeding on krill (Thysanoessa inermis) for some time. The samples were analysed for dry mass, energy density, lipid content and the major lipid classes, including wax esters. The concentrations of wax esters were compared with previous estimates of dry-matter disappearance of the same type of prey using anin vitrotechnique, to calculate the dry-matter digestibility of wax esters (DMDwax). Wax esters contributed 21% of the energy and 47% of total lipids in the krill diet. The energy density of gut contents decreased by 50% after their passage from forestomach to the end of the colon. The DMDwaxwas 94·1 (SD 2·8)% (n5). This high DMDwaxand the occurrence of fatty alcohols, one of the products of wax-ester hydrolysis, in faeces show that minke whales are very efficient digesters of wax esters and absorb most of the energy-rich products of this process.

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