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Using the Jolly‐Seber Model to Estimate Population Size, Mortality, and Recruitment for a Reservoir Fish Population
Author(s) -
Hightower Joseph E.,
Gilbert Ronnie J.
Publication year - 1984
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1984)113<633:utjmte>2.0.co;2
Subject(s) - mark and recapture , population size , population , bass (fish) , statistics , sampling (signal processing) , fish <actinopterygii> , biology , micropterus , fishery , mathematics , demography , physics , sociology , detector , optics
A multiple mark‐recapture experiment was conducted in which the Jolly‐Seber model was used to estimate population size, survival, and recruitment of largemouth bass Micropterus salmoides in an unfished reservoir. Fish were marked with either two Floy tags or one Floy tag and a clipped fin. Estimated loss rates for each mark were used to correct survival estimates. There was no evidence of initial mortality due solely to tagging; however, at high water temperatures (25–30 C), we detected short‐term mortality due to hooking, handling, tagging, and holding. By simulating a multiple mark‐recapture experiment, we demonstrated that the Jolly‐Seber model provides reliable estimates of population size and survival at a low sampling intensity if survival is high and population size is large. Tag loss at low time‐dependent rates did not noticeably affect the reliability of estimates of population size and survival rate for a simulated mark‐recapture experiment conducted at a low sampling intensity. Received July 27, 1983 Accepted May 13, 1984