[OANNES Foro] Recreational fishing selectively captures individuals with the highest fitness potential

[Presidencia ONG OANNES - Francisco J. Miranda A.]

Amigos de Oannes,  

Comparto con ustedes este interesantísimo paper sobre la captura selectiva que contiene un importante análisis del efecto del arte sobre el reclutamiento y reproducción de las especies objetivo. Y aprovecho la oportunidad para agradecer a los miembros silentes que siempre colaboran con nosotros haciendonos llegar informacion para compartir con ustedes.

Saludos cordiales.

Francisco J. Miranda Avalos
Presidente de la Junta Directiva



Mensaje reenviado:

> Hola Pancho, adjunto un paper muy interesante sobre la pesca con línea y su (posible) efecto sobre el reclutamiento y reproducción.
>   
> PNAS | December 18, 2012 | vol. 109 | no. 51
> Recreational fishing selectively captures individuals with the highest fitness potential
>   
> David A. H. Suttera,b,c,1, Cory D. Suskib, David P. Philippb,d, Thomas Klefotha, David H. Wahlb,d, Petra Kerstene,Steven J. Cookef, and Robert Arlinghausa,c
> aDepartments of Biology and Ecology of Fishes and eEcophysiology and Aquaculture, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12587
> Berlin, Germany; bDepartment of Natural Resources and Environmental Science, University of Illinois at Urbana-Champaign, Urbana, IL 61801; cInland
> Fisheries Management Laboratory, Department for Crop and Animal Sciences, Faculty of Agriculture and Horticulture, Humboldt-Universität zu Berlin, 10115
> Berlin, Germany; dIllinois Natural History Survey, Champaign, IL 61820; and fFish Ecology and Conservation Physiology Laboratory, Department of Biology and
> Institute of Environmental Science, Carleton University, Ottawa, ON, Canada K1S 5B6
>   
> Summary
>   
> Fisheries-induced evolution and its impact on the productivity of exploited fish stocks remains a highly contested research topic in applied fish evolution and fisheries science. Although many quantitative models assume that larger, more fecund fish are preferentially removed by fishing, there is no empirical evidence describing the relationship between vulnerability to capture and individual reproductive fitness in the wild. Using males from two lines of largemouth bass (Micropterus salmoides) selectively bred over three generations for either high (HV) or low (LV) vulnerability to angling as a model system, we show that the trait “vulnerability to angling” positively correlates with aggression, intensity of parental care, and reproductive fitness. The difference in reproductive fitness between HV and LV fish was particularly evident among larger males, which are also the preferred mating partners of females. Our study constitutes experimental evidence that recreational angling selectively captures individuals with the highest potential for reproductive fitness. Our study further suggests that selective removal of the fittest individuals likely occurs in many fisheries that target species engaged in parental care. As a result, depending on the ecological context, angling-induced selection may have negative consequences for recruitment within wild populations of largemouth bass and possibly other exploited species in which behavioral patterns that determine fitness, such as aggression or parental care, also affect their vulnerability to fishing gear.
>    

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