INIBIOMA   20415
INSTITUTO DE INVESTIGACIONES EN BIODIVERSIDAD Y MEDIOAMBIENTE
Unidad Ejecutora - UE
artículos
Título:
Comparative analysis between gill netting and sport fisher catches in a small patagonic andean lake: its implications for resource evaluation and management.
Autor/es:
2. LIPPOLT, G.E., P. H. VIGLIANO, P. MACCHI, ALONSO, M., D. MILANO, M. DENEGRI, & M. GARCIA ASOREY
Revista:
ECOLOGÍA AUSTRAL
Editorial:
ASOCIACIÓN ARGENTINA DE ECOLOGÍA
Referencias:
Lugar: Buenos Aires; Año: 2011 vol. 27 p. 71 - 85
ISSN:
0327-5477
Resumen:
Knowledge of lake fish communities of Argentine Patagonia has grown in the past 20years thanks to the use of gill nets. However, National Park officials and Fisher organizations disliketheir use and would prefer the use of recreational fisher catch data. The present paper addressesadvantages and disadvantages of using gill nets as compared to fishers. This was accomplished byanalysis of gill net and fisher catch data from Lake Guillelmo, Parque Nacional Nahuel Huapi forthe period 1997-1999. Both sets of data revealed the presence of only two salmonids, brook trout(Salvelinus fontinalis) and rainbow trout (Oncorhynchus mykiss). However, relative abundances ofeach species differed between fishing techniques, rainbow trout being dominant according to fishercatches and brook trout according to gill net catches. In addition, differences in size, age and spatialdistribution brought about by the highly selective nature of fisher catches were clearly observed.This shows that fisher catch data can only be used to assess existing recreational Patagonian lakefisheries in terms of current or historical trends in catch composition, structure and fishing pressure.Studies of community composition, structure and processes leading to conservation or recreationalfishery management should rely on gill net sampling designs tailored to different ecological andmanagement questions, which can be complemented by fisher catch data.