Empirical relationships to estimate asymptotic length, length at first maturity and length at maximum yield per recruit in fishes, with a simple method to evaluate length frequency data.

Froese, Rainer and Binohlan, C. (2000) Empirical relationships to estimate asymptotic length, length at first maturity and length at maximum yield per recruit in fishes, with a simple method to evaluate length frequency data. Journal of Fish Biology, 56 . pp. 758-773. DOI 10.1111/j.1095-8649.2000.tb00870.x.

[img] Text
Froese.pdf - Published Version
Restricted to Registered users only

Download (148Kb) | Contact

Supplementary data:

Abstract

Empirical relationships are presented to estimate in fishes, asymptotic length (L∞) from maximum observed length (Lmax), length at first maturity (Lm) from L∞, life span (tmax) from age at first maturity (tm), and length at maximum possible yield per recruit (Lopt) from L∞ and from Lm, respectively. The age at Lopt is found to be a good indicator of generation time in fishes. A spreadsheet containing the various equations can be downloaded from the Internet at http://www.fishbase.org/download as popdynJFB.zip. A simple method is presented for evaluation of length–frequency data in their relationship to L∞, Lm and Lopt. This can be used to evaluate the quality of the length–frequency sample and the status of the population. Three examples demonstrate the usefulness of this method. 2000 The Fisheries Society of the British Isles

Document Type: Article
Keywords: Yield per recruit; maturity; life-span; generation time; length-frequency
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1111/j.1095-8649.2000.tb00870.x
ISSN: 0022-1112
Date Deposited: 18 Feb 2008 17:24
Last Modified: 08 Sep 2017 12:22
URI: http://oceanrep.geomar.de/id/eprint/575

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...