CHARACTERISTICS ЩА REPRODUCTIVE ORGANS OF CASPIAN SEAL (PHOCA CASPICA, GMELIN, 1788) IN THE CONDITIONS OF ANTHROPOGENIC PRESSING
نویسندگان
چکیده
منابع مشابه
Pup production and breeding distribution of the Caspian seal (Phoca caspica) in relation to human impacts.
Aerial surveys of Caspian seals on the winter ice field in Kazakhstan territorial waters were carried out in February 2005 and 2006 to assess the annual pup production for the species and natural predation on newborn pups. Estimated pup production was 21063 in 2005 and 16905 in 2006 (including an estimated figure for pups born in Russian territory in each year). The breeding population size of ...
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ژورنال
عنوان ژورنال: South of Russia: ecology, development
سال: 2016
ISSN: 2413-0958,1992-1098
DOI: 10.18470/1992-1098-2016-3-129-139