Weaning age variation in beluga whales (Delphinapterus leucas)
نویسندگان
چکیده
منابع مشابه
Migratory culture, population structure and stock identity in North Pacific beluga whales (Delphinapterus leucas)
The annual return of beluga whales, Delphinapterus leucas, to traditional seasonal locations across the Arctic may involve migratory culture, while the convergence of discrete summering aggregations on common wintering grounds may facilitate outbreeding. Natal philopatry and cultural inheritance, however, has been difficult to assess as earlier studies were of too short a duration, while geneti...
متن کاملHematology and Plasma Chemistry as Indicators of Health and Ecological Status in Beluga Whales, Delphinapterus leucas
The capture of beluga whales, Delphinapterus leucas, for instrumentation or tagging afforded the opportunity to collect blood, which was analyzed to evaluate the animals’ health and gain information on basic physiological systems. Here, we report on hematological and plasma chemical constituents in samples obtained from 183 belugas, 55 of which were handled during attempts to apply tracking ins...
متن کاملSelection of reference genes for RT-qPCR studies in blood of beluga whales (Delphinapterus leucas).
Reverse transcription quantitative PCR (RT-qPCR) is used for research in gene expression, and it is vital to choose appropriate housekeeping genes (HKGs) as reference genes to obtain correct results. The purpose of this study is to determine stably expressed HKGs in blood of beluga whales (Delphinapterus leucas) that can be the appropriate reference genes in relative quantification in gene expr...
متن کاملHearing threshold shifts and recovery after noise exposure in beluga whales, Delphinapterus leucas.
Temporary threshold shift (TTS) after loud noise exposure was investigated in a male and a female beluga whale (Delphinapterus leucas). The thresholds were evaluated using the evoked-potential technique, which allowed for threshold tracing with a resolution of ~1 min. The fatiguing noise had a 0.5 octave bandwidth, with center frequencies ranging from 11.2 to 90 kHz, a level of 165 dB re. 1 μPa...
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 ...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 2015
ISSN: 0022-2372,1545-1542
DOI: 10.1093/jmammal/gyv046