Scale Analysis Suggests Frequent Skipping of Second Reproductive Season in Atlantic Herring

Engelhard, G.H. & Heino, M. ORCID: https://orcid.org/0000-0003-2928-3940 (2005). Scale Analysis Suggests Frequent Skipping of Second Reproductive Season in Atlantic Herring. IIASA Interim Report. IIASA, Laxenburg, Austria: IR-05-075

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Abstract

A common assumption in fish studies is that iteroparous fish, once mature, normally reproduce in all consecutive seasons. Analysis of scales from Norwegian spring-spawning herring collected between 1935-1973 revealed strong under-representation (47% of expected) of second-time spawners on the spawning grounds. This reduction is not explained satisfactorily by possible errors in scale-reading, suggesting that the second reproductive season is frequently skipped. Skipping a season may relate to trade-offs between growth, current and future reproduction, and survival, which are likely to be particularly strong for young adult herring.

Item Type: Monograph (IIASA Interim Report)
Uncontrolled Keywords: Clupea harengus; Current and future reproduction; Fishery management; Life-history trade-off; Migration cost; Survival
Research Programs: Adaptive Dynamics Network (ADN)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 02:18
Last Modified: 27 Aug 2021 17:19
URI: https://pure.iiasa.ac.at/7767

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