Rates of increase in gray seal (Halichoerus grypus atlantica) pupping at recolonized sites in the United States, 1988–2019
نویسندگان
چکیده
منابع مشابه
GRAY SEAL (Halichoerus grypus): Western North Atlantic Stock
STOCK DEFINITION AND GEOGRAPHIC RANGE The gray seal is found on both sides of the North Atlantic, with three major populations: eastern Canada, northwestern Europe and the Baltic Sea (Katona et al. 1993). The western North Atlantic population occurs from New England to Labrador and is centered in the Sable Island region of Nova Scotia (Mansfield 1966; Katona et al. 1993; Davies 1957; Lesage and...
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Past researchers have found that gray seals (Halichoerus grypus) are capable of classifying vocal signals by call type using a trained set, but were unable to generalize to novel exemplars (Shapiro, Slater, & Janik, 2004). Given the importance of auditory categorization in communication, it would be surprising if the animals were unable to generalize acoustically similar calls into classes. Her...
متن کاملPolychlorinated biphenyls and organochlorine pesticides in Baltic and Atlantic gray seal (Halichoerus grypus) pups.
Organochlorine pollutants (OCs), such as polychlorinated biphenyls (PCBs), DDT, chlordanes (CHLs), hexachlorobenzene (HCB) and hexachlorocyclohexanes (HCHs) were determined in blubber biopsies from free-ranging Baltic and Atlantic gray seal (Halichoerus grypus) pups. Well-fed pups from the Baltic Sea had concentrations of DDT, PCBs, and HCHs that were 2 to 10 times higher than in corresponding ...
متن کاملBody condition at weaning affects the duration of the postweaning fast in gray seal pups (Halichoerus grypus).
Gray seals (Halichoerus grypus) undergo a terrestrial postweaning fast (PWF) that depletes energy reserves acquired during the suckling interval. Plasticity in PWF duration may ensure that pups of variable body condition depart for sea with adequate energy reserves. To test this hypothesis, we examined body condition of 30 gray seal pups at weaning and monitored their PWF duration. On average, ...
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THIBAUT BOUVEROUX, Observatoire pour la Conservation et l’Etude des Animaux et Milieux Marins (OCEAMM), 51 Rue du G en eral de Gaulle, F-59123 Zuydcoote, France; JEREMY J. KISZKA andMICHAEL R. HEITHAUS, Marine Sciences Program, Department of Biological Sciences, Florida International University, 3000 NE 151st Street, North Miami, Florida 33181, U.S.A.; THIERRY JAUNIAUX, Department of Veterinary...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 2019
ISSN: 0022-2372,1545-1542
DOI: 10.1093/jmammal/gyz184