|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
Tendencies toward change in the Morphometric Features of Diadromous Mikizha Salmo mykiss from the Rivers of Northwestстатья
Дата последнего поиска статьи во внешних источниках: 9 июня 2016 г.
- Авторы: Savvaitova K.A., Kuzishchin K.V.
- Журнал: Journal of Ichthyology
- Том: 38
- Номер: 3
- Год издания: 1998
- Издательство: Pleiades Publishing, Inc.
- Местоположение издательства: New York, USA
- Первая страница: 238
- Последняя страница: 250
- Аннотация: Temporal morphological changes (from 1971-1972 to 1994-1996) in the diadromous Kamchatka mikizha Salmo mykiss from three rivers of northwest Kamchatka, which have been subjected to anthropogenic impact to different externts, were studied. In all rivers the fish populations - calculated as the average of most features, variability indices, and distribution curves - have not significantly changed. However the number of vertebrae has decreased, and this change has affected not only the average values, but also the singe variation limits, of various features. The maximum changes were observed in the Utkholok River mikizha, whose numbers decreased and whose population structure was altered. According to this set of features, there is a tendency toward change in the mikizha's external appearance, and the population of the Utkholok occupies a more remote position with respect to the populations of the Snatolvayam and Kvachina rivers.
- Добавил в систему: Кузищин Кирилл Васильевич