Results 41 to 50 of about 9,548 (180)

A multi-year study of narwhal occurrence in the western Fram Strait—detected via passive acoustic monitoring

open access: yesPolar Research, 2019
Passive acoustic monitoring (PAM) has proven to be an efficient method for studying vocally active marine mammals in areas that are difficult to access on a year-round basis.
Heidi Ahonen   +4 more
doaj   +1 more source

Monodon monoceros Linnaeus 1758

open access: yes, 1982
Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc.
Honacki, James H.   +2 more
openaire   +1 more source

Stomach temperature of narwhals (Monodon monoceros) during feeding events [PDF]

open access: yesAnimal Biotelemetry, 2014
Information on the feeding rate by free-ranging odontocetes is necessary for assessing potential conflicts with fishing activities. One way of obtaining a proxy for feeding events in homeothermic predators is to measure stomach temperature, which drops during prey ingestion.
Heide-Jørgensen, Mads   +3 more
openaire   +1 more source

Surveys of belugas and narwhals in the Canadian High Arctic in 1996

open access: yesNAMMCO Scientific Publications, 2002
The summer range of belugas (Delphinapterus leucas) and narwhals (Monodon monoceros) in Prince Regent Inlet, Barrow Strait and Peel Sound in the Canadian High Arctic was surveyed from 31 July to 3 August 1996 with a visual aerial survey of offshore areas
Stuart Innes   +6 more
doaj   +1 more source

Narwhal Genome Reveals Long-Term Low Genetic Diversity despite Current Large Abundance Size

open access: yesiScience, 2019
Summary: The narwhal (Monodon monoceros) is a highly specialized endemic Arctic cetacean, restricted to the Arctic seas bordering the North Atlantic.
Michael V. Westbury   +4 more
doaj   +1 more source

Early stages of tooth development in the harbor porpoise Phocoena phocoena

open access: yesThe Anatomical Record, EarlyView.
Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes   +2 more
wiley   +1 more source

Report of the workshop on age estimation in beluga: Beaufort, North Carolina, US 5-9 December 2011

open access: yesNAMMCO Scientific Publications, 2016
A workshop convened by C. Lockyer and A. A. Hohn to examine variation among readers in estimating beluga ages was held in Beaufort, North Carolina, US. Terms of Reference for the workshop included the following: 1.
Christina Lockyer   +3 more
doaj   +1 more source

Vertical sonar beam width and scanning behavior of wild belugas (Delphinapterus leucas) in West Greenland.

open access: yesPLoS ONE, 2021
Echolocation signals of wild beluga whales (Delphinapterus leucas) were recorded in 2013 using a vertical, linear 16-hydrophone array at two locations in the pack ice of Baffin Bay, West Greenland.
Marie J Zahn   +4 more
doaj   +1 more source

Sensory Biology of the Franciscana (Pontoporia blainvillei, Pontoporiidae, Cetartiodactyla): Ontogenetic Modifications of Vibrissae and Vibrissal Crypts

open access: yesIntegrative Zoology, EarlyView.
The transition of cetaceans from a terrestrial to an aquatic environment involved a crucial sensory adaptation to environments with limited visibility. Vibrissae, important mechanoreceptors, undergo an ontogenetic transformation in odontocetes. This research describes the histomorphology of vibrissae and crypts at different developmental stages ...
Cecilia Mariana Krmpotic   +10 more
wiley   +1 more source

The Stock Potency of Demersal Fish Resource at The Coastal Zone, East Kutai District in East Kalimantan

open access: yesInternational Journal of Science and Engineering, 2014
The objective of this research was to estimate the potency of demersal fish resource spread over three sub-districts i.e. Sangkulirang, Sandaran and Kaliorang in Kutai district, East Kalimantan province.
Juliani Juliani, Iwan Suyatna
doaj   +1 more source

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