Results 71 to 80 of about 5,141 (217)

Element concentrations in tissues reveal spatial structure of Atlantic walrus management stocks

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
Differences in tissue element concentrations confirm geographic differentiation between 2 of Canada's walrus management stocks but reveal additional spatial structure within the largest stock that may have management implications. Abstract Ensuring harvested animal populations are managed at appropriate scales requires an understanding of underlying ...
Alexander M. Jardine   +3 more
wiley   +1 more source

Historic and Current Use of Lower Cook Inlet, Alaska, by Belugas, Delphinapterus leucas [PDF]

open access: yes, 2000
Dedicated at-sea surveys for marine birds and mammals conducted in lower Cook Inlet in late July and early August from 1995–99 failed to locate any belugas, Delphinapterus leucas.
Piatt, John F., Speckman, Suzann G.
core  

Herpes virus infection associated with interstitial nephritis in a beaked whale (Mesoplodon densirostris) [PDF]

open access: yes, 2012
Background The capacity for herpesvirus to cause disease in cetaceans is unclear and may be varied depending on the different conditions of individuals and between different species. Kidney pathology and intralesional virus-associated infection have been
Manuel Arbelo   +8 more
core   +2 more sources

Larger body size leads to greater female beluga whale ovarian reproductive activity at the southern periphery of their range

open access: yesEcology and Evolution, 2021
Identification of phenotypic characteristics in reproductively successful individuals provides important insights into the evolutionary processes that cause range shifts due to environmental change.
Steven H. Ferguson   +5 more
doaj   +1 more source

Diverging Food Web Functioning Around Southampton Island, Nunavut: The Influence of Primary Production Supply and Bathymetry

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
Southampton Island hosts two distinct benthic sub‐webs, north and south. North is deeper, phytoplankton‐driven; South is shallower, more ice‐algae driven. North benthos: bottom‐up control, four trophic levels including apex predators. South benthos: walrus top‐down control, trophic truncation to three levels.
Rémi Amiraux   +13 more
wiley   +1 more source

Mother-Calf Behavior in Delphinapterus leucas in the Second Year of Life [PDF]

open access: yes, 2013
A longitudinal investigation of two beluga whale mother-calf pairs located at SeaWorld San Antonio was conducted in order to examine and describe the calves’ change in swim positioning in relation to their mothers over time. Swim positions are considered
Johnson, Jennifer
core  

True Hermaphroditism in a St. Lawrence Beluga Whale (Delphinapterus leucas) [PDF]

open access: yesJournal of Wildlife Diseases, 1994
A hermaphrodite beluga whale (Delphinapterus leucas) was found in the St. Lawrence Estuary, Québec, Canada. This animal had two testicles, two separate ovaries, and the complete ducts of each sex; cervix, vagina and vulva were absent. Mature spermatozoa were found in the lumen of seminiferous tubules in the testicles, and numerous involuted corpora ...
S, De Guise, A, Lagacé, P, Béland
openaire   +2 more sources

Navigating Cetacean Mitochondrial Genome Data: Identifying Coverage and Deficiencies in Public Repositories

open access: yesMolecular Ecology Resources, Volume 26, Issue 3, April 2026.
ABSTRACT Genetic reference databases underpin a wide range of molecular approaches used to study cetacean biodiversity, including environmental DNA (eDNA), yet their reliability depends critically on data completeness, taxonomic accuracy, and metadata quality.
Luís Afonso   +12 more
wiley   +1 more source

Variation in hearing within a wild population of beluga whales (Delphinapterus leucas) [PDF]

open access: yes, 2018
Author Posting. © The Company of Biologists, 2018. This article is posted here by permission of The Company of Biologists for personal use, not for redistribution.
Castellote, Manuel   +5 more
core   +1 more source

Feces DNA analyses track the rehabilitation of a free-ranging beluga whale

open access: yesScientific Reports, 2022
Following the sudden appearance, and subsequent efforts to support the survival of a beluga whale (Delphinapterus leucas) speculated to have been previously trained off the coast of Norway, we investigate the animal’s ability to readapt to life in the ...
Babett Günther   +5 more
doaj   +1 more source

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