Effective Size of Subpopulations in Early-Run Sockeye Salmon Oncorhynchus nerkafrom Azabach'e Lake (Kamchatka): The Effect of Density on Variance of Reproductive Success

Effective Size of Subpopulations in Early-Run Sockeye Salmon Oncorhynchus nerkafrom Azabach'e... Using Parensky's approach for estimating the number of breeding pairs, we determined effective subpopulation size N e in early-run sockeye salmon Oncorhynchus nerka from Azabach'e Lake (Kamchatka) in 1977 through 1981. On average (over years and populations), biased sex ratio decreased N e by 7% as compared to the number of fish on the spawning sites (N i). High density reduced the N e /N i ratio by 62–66% because some fish were excluded from spawning. Dominance polygyny as compared to monogamy and random union of gametes could reduce N e by about 17%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Effective Size of Subpopulations in Early-Run Sockeye Salmon Oncorhynchus nerkafrom Azabach'e Lake (Kamchatka): The Effect of Density on Variance of Reproductive Success

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1023/B:RUGE.0000024981.15293.00
Publisher site
See Article on Publisher Site

Abstract

Using Parensky's approach for estimating the number of breeding pairs, we determined effective subpopulation size N e in early-run sockeye salmon Oncorhynchus nerka from Azabach'e Lake (Kamchatka) in 1977 through 1981. On average (over years and populations), biased sex ratio decreased N e by 7% as compared to the number of fish on the spawning sites (N i). High density reduced the N e /N i ratio by 62–66% because some fish were excluded from spawning. Dominance polygyny as compared to monogamy and random union of gametes could reduce N e by about 17%.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Oct 18, 2004

References

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