True Hermaphroditism in a St. Lawrence Beluga Whale (Delphinapterus leucas)
نویسندگان
چکیده
منابع مشابه
BELUGA WHALE, Delphinapterus leucas: Cook Inlet Population - Critically Endangered
Population Identity: Based on studies of mitochondrial DNA, Cook Inlet belugas are genetically distinct from the other four beluga populations that occur in western and northern Alaska (O’Corry-Crowe et al. 1997; O’Corry-Crowe, pers. comm.). There have been only two beluga sightings recorded in the region between Cook Inlet and the nearest beluga population in Bristol Bay (Frost and Lowry 1990;...
متن کاملStatus of Beluga (delphinapterus Leucas) in the St. Lawrence River Estuary
The St. Lawrence Estuary (SLE) beluga are listed as threatened under the Species at Risk Act; a Recovery Strategy is defined, and their summer Critical Habitat has been identified. A review of the SLE beluga status (2007) concluded that the population was stable over the period 1988-2006. However, in recent years there has been an increase in reports of death of young-of-the-year, and an appare...
متن کاملTemporal trends of PBDEs in adult and newborn beluga (Delphinapterus leucas) from the St. Lawrence Estuary
.............................................................................................................................. IV RÉSUMÉ ................................................................................................................................... V INTRODUCTION ....................................................................................................................
متن کاملPossible mechanisms of action of environmental contaminants on St. Lawrence beluga whales (Delphinapterus leucas).
A small isolated population of beluga whales (Delphinapterus leucas) that are highly contaminated by pollutants, mostly of industrial origin, resides in the St. Lawrence estuary, Québec, Canada. Overhunting in the first half of the century was the probable cause for this population to dwindle from several thousand animals to the current estimate of 500. The failure of the population to recover ...
متن کاملEnvironmental Adaptations of the Beluga Whale (Delphinapterus leucas)
This paper aims to analyze the physiological, perceptual, and behavioral adaptations in the Beluga Whale (Delphinapterus leucas) as a result of its arctic niche. The social implications of these adaptations will be examined by looking at each part as influential elements of each other. Lastly, the idea of defining culture in cetaceans will be addressed, including a proposal for examining cultur...
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ژورنال
عنوان ژورنال: Journal of Wildlife Diseases
سال: 1994
ISSN: 0090-3558
DOI: 10.7589/0090-3558-30.2.287