Production and population dynamics of Leptodiaptomus sicilis in a mountain lake in Alberta, Canada

Autor:	R. Stewart Anderson, David W. Mayhood, Alois Herzig
Rok vydání:	1980
Předmět:	education.field_of_study Daily production Dry weight Ecology Population Alberta canada Leptodiaptomus sicilis Biology education Ecology Evolution Behavior and Systematics Predation
Zdroj:	Ecography. 3:50-63
ISSN:	1600-0587 0906-7590
Popis:	Leptodiaptomus sicilis (S. A. Forbes 1882) in Pyramid Lake, Alberta, Canada, has only one main generation per year. A small summer generation probably does not survive. Adults may persist for 7 to 12 months, and individual copepods may live for up to 17 months. Retardation of the development of copepodid C4 and C 5 seems to be food linked. The high percentage of survivors (up to 97%) from the first egg pulse of the main generation, and the low percentage of survivors (as low as 3%) from the second egg pulse, is likely due to the absence of cyclopoid adults and copepodids in spring, and to both cyclopoid predation and a poor food regime in summer. Production estimates by several methods gave closely comparable results. Mean daily production by L. sicilis is 0.29 mg dry weight m-3, and the annual P/B ratio is 2.63.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e9b54943e6e0b0ef1bc690513c34228c https://doi.org/10.1111/j.1600-0587.1980.tb00708.x Zobrazit plný text záznamu