Exclusive adjoining ranges in individually identified minke whales (Balaenoptera acutorostrata) in Washington state

Autor:	Eleanor M. Dorsey
Rok vydání:	1983
Předmět:	Fishery Baleen Balaenoptera Animal Science and Zoology Biology Scale (music) biology.organism_classification Ecology Evolution Behavior and Systematics
Zdroj:	Canadian Journal of Zoology. 61:174-181
ISSN:	1480-3283 0008-4301
DOI:	10.1139/z83-022
Popis:	Free-ranging minke whales in the inland marine waters of Washington, U.S.A., were found to be individually identifiable from photographs of naturally occurring distinctive features. Sixteen individuals were recognized and observed from small boats 66 times over 3.5 months in 1980, and four of these whales were also recognized from photographs taken in 1977 and 1978. Three exclusive adjoining ranges were found in about 600 km2, each one shared by up to at least seven minke whales, with only two instances of crossover between areas in 70 sightings. Feeding was observed in all three areas, and the whales within each area appeared most of the time to be acting independently of one another. No calves were seen, and no overt acts of territorial defense were observed. This is the first known report in baleen whales of nonoverlapping ranges on a very small scale.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::571fbe5ab3b823b1750cc3a0025b6371 https://doi.org/10.1139/z83-022 Zobrazit plný text záznamu