Results 41 to 50 of about 1,178 (171)

Status of the belugas of the St Lawrence estuary, Canada

NAMMCO Scientific Publications, 2002
A population of belugas (Delphinapterus leucas) inhabiting the estuary of the St Lawrence river in Quebec, Canada, was depleted by unregulated hunting, not closed until 1979. Surveys in 1977 showed only a few hundred in the population. Surveys since then
Michael CS Kingsley
doaj   +1 more source

Delphinapterus leucas Pallas 1776

, 2014
Published as part of Russell A. Mittermeier & Don E. Wilson, 2014, Monodontidae, pp. 394-408 in Handbook of the Mammals of the World – Volume 4 Sea Mammals, Barcelona :Lynx Edicions on pages 407-408, DOI: 10.5281/zenodo ...
Russell A. Mittermeier, Don E. Wilson
openaire   +2 more sources

Tumors in St. Lawrence Beluga Whales ( Delphinapterus leucas ) [PDF]

Veterinary Pathology, 1994
A population of 450–500 belugas ( Delphinapterus leucas) resides in the polluted estuary of the St. Lawrence River. Stranded carcasses of this endangered population were recovered and necropsied. High concentrations of organochlorines, heavy metals, and benzo-a-pyrene exposure were demonstrated in tissues of these whales.
S, De Guise, A, Lagacé, P, Béland
openaire   +2 more sources

The role of aquaria in beluga research and conservation

Polar Research, 2021
Aquaria that care for and maintain belugas (Delphinapterus leucas) under professional care have the opportunity to contribute to the conservation of wild belugas through research, expertise in animal care and husbandry, and engaging and educating the ...
Tracy A. Romano, Laura A. Thompson, Maureen V. Driscoll, Ebru Unal, Allison D. Tuttle, Gayle Sirpenski, Mary Ellen Mateleska, Dale Wolbrink   +7 more
doaj   +1 more source

Disrupting the herd: Recreational boating alters group dispersion within beluga whale herds

The Journal of Wildlife Management, EarlyView.
Recreational boating in beluga habitat remains poorly documented. Using land‐based observations in the Saguenay Fjord (Quebec, Canada), we show that increasing recreational boat numbers are associated with a higher probability of changes in beluga herd dispersion, suggesting behavioral disturbance and the need to integrate recreational boating into ...
Camille Kowalski, Angélique Dupuch, Jean‐François Sénécal, Jérôme Dupras, Clément Chion   +4 more
wiley   +1 more source

Status of the Beluga, Delphinapterus leucas, in the Beaufort Sea

The Canadian field-naturalist, 1997
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Finley, Kerwin J., Hickie, J. P., Davis, Rolph A   +2 more
openaire   +2 more sources

Persistent Mü̈llerian duct syndrome in a beluga whale Delphinapterus leucas [PDF]

Diseases of Aquatic Organisms, 2019
This case study describes a persistent Mü̈llerian duct syndrome (PMDS), a rare form of XY disorder of sex development (DSD), in a mature (>15 yr) beluga whale Delphinapterus leucas. The phenotypically and genetically male beluga whale had both Mü̈llerian (paramesonephric) and Wolffian (mesonephric) duct derivatives. A mild hydrometra was present. Gross
Raphaela, Stimmelmayr, Tatiana, Ferrer, David S, Rotstein   +2 more
openaire   +2 more sources

First Non‐Invasive Monitoring of Fecal Steroids in Greater Caribbean Manatees (Trichechus manatus manatus)

Zoo Biology, EarlyView.
This study established the first fecal hormonal reference values (P4/E2) for the Greater Caribbean manatee. Using non‐invasive ELISA, the authors found no significant differences between mature and immature females, highlighting that long‐term monitoring and ultrasounds are essential to fully understand their complex reproductive cycles.
Vanessa Bermúdez‐Cardona, Roberto Sánchez‐Okrucky, José A. Sandoval‐Zárate, Nataly Castelblanco‐Martínez   +3 more
wiley   +1 more source

First recorded ice entrapment of a beluga whale (Delphinapterus leucas) in east Greenland

Polar Research
Beluga whales are rare along the coast of east Greenland and the closest recognized stock occurs around Svalbard. Here we report on an ice entrapment of an adult beluga whale (Delphinapterus leucas) in north-east Greenland.
Kristin L. Laidre, Jasmine Ware, Marie Zahn, Peter Hegelund, Jon Aars   +4 more
doaj   +1 more source

Visibility of St Lawrence belugas to aerial photography, estimated by direct observation

NAMMCO Scientific Publications, 2002
The depleted population of belugas (Delphinapterus leucas) inhabiting the St Lawrence estuary, Canada, was monitored by periodic photographic aerial surveys. In order to correct counts made on aerial survey film and to obtain an estimate of the true size
Michael CS Kingsley, Isabelle Gauthier
doaj   +1 more source