Effects of temperature and food supply on the growth of whitefishCoregonus lavaretuslarvae in an oligotrophic peri-alpine lake.

Perrier, C., Molinero, Juan Carlos, Gerdeaux, D. and Anneville, O. (2012) Effects of temperature and food supply on the growth of whitefishCoregonus lavaretuslarvae in an oligotrophic peri-alpine lake. Journal of Fish Biology, 81 (5). pp. 1501-1513. DOI 10.1111/j.1095-8649.2012.03393.x.

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Abstract

The relative roles of temperature and food availability on the seasonal and daily growth of whitefish Coregonus lavaretus larvae were investigated in the oligotrophic peri-alpine Lake Annecy, France. During the spring from 2004 to 2007, surface water temperature and density of potential zooplankton prey were monitored, and 2688 larvae were caught and measured. In addition, the daily growth of 130 larvae was estimated retrospectively by investigating the microstructure of their otoliths. Temperature played the predominant role in controlling both seasonal and daily growth of early larvae. In contrast, the abundance of Mesocyclops leuckarti and larval density was only slightly correlated to larval growth, suggesting no food limitation nor strong interindividual competition over the study period. Overall, these findings run counter to concerns about potential food limitation, but sound a warning about the potential impact of climate change on fish ecology and fisheries management.

Document Type: Article
Additional Information: WOS:000309452800004
Keywords: Coregonidae; daily growth; microstructure; otolith; zooplankton; NORTH-ATLANTIC OSCILLATION; CLIMATE VARIABILITY; LONG-TERM; GENEVA; RECRUITMENT; MORTALITY; VENDACE; EUROPE; CONSTANCE; DENSITY
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1111/j.1095-8649.2012.03393.x
ISSN: 0022-1112
Date Deposited: 02 Nov 2012 10:17
Last Modified: 14 Sep 2017 11:26
URI: http://oceanrep.geomar.de/id/eprint/19085

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