000			02931nab a2200409 a 4500
003			AR-ReUNN
005			20260702003059.0
008			260630s2007 ag |||||||||||||||||spa
041	0		_aspa _aeng
100	1		_aBonetto, Argentino a. _977121
700	1		_aRoldán, Dante o. _9147459
700	1		_aCanón Verón, Marta B. _976054
245	1	0	_aAlgunos aspectos estructurales y ecológicos de la ictiofauna del sistema de Iberá - Corrientes, Argentina - / Argentino A. Bonetto, Dante Roldán, Marta Canón Verón
264		1	_c2007
300			_a11 páginas
500			_aDisponible en estante de INICNE Ejemplares duplicados disponibles en : caja 16 no 31, caja 11 no 4 , caja 27 no 10, caja 26 no 36. Several structural and ecological aspects of the fish fauna of the Iberá System (Corrientes Province, Argentina)
520			_aThe present paper deals with the structure, distribution and main ecological characterics of the fish fauna in the wide complex of lenitic water bodies within the Iberá system, at Corrientes Province, Argentina. In the waters of such basin -which covers nearly 1,200,000 ha-were recorded 81 species of fishes, of 59 genera, 19 families and 8 orders. The basic structure of the fish fauna was given by sedentary species (it is: species able to thrive and reproduce in lenitic waters) that are exclusive in the northern area of the system, while only two typical migratory fishes: Prochilodus platensis and Salminus maxillosus, were present at the southern area (more under the influence of the Corrientes River). The fish productivity is very poor from the economical point of view, particularly at the northean area, being in the higher trophic level fishes of low value, such as Hoplias malabaricus and Hoplerythrinus unitaeniatus ("tarariras"), Acestrorhamphus jenynsi and Acestrorhynchus falcatus ("dientudos"), and more frequently Serrasalmus nattereri and S. spilopleura ("pirañas"). This particular situation is due to the actual high concentration of organic matter derived from the exuberant aquatic vegetation. It is possible that the Iberá system had played in the past, in an environment of largen open pools, a very important role in the fish productivity of the regional waters
650		4	_aPeces del Ibera _9147039
650		4	_aPeces de Agua Dulce _96471
650		4	_aProducción _94624
650		4	_aEcología _94910
650		4	_aDistribución Geografica _97085
650		4	_aMigración _96725
650		4	_aReproducción _98441
650		4	_aArgentina _94258
650		4	_aFreshwater Fish _9117439
650		4	_aInland Waters _9117440
650		4	_aBiological Production _9147105
650		4	_aEcology _9117438
650		4	_aGeographical Distribution _9147031
650		4	_aMigrations _9146988
650		4	_aReproduction _9117444
773	0		_tEcosur _x0325-108X _gv. 8 n. 15 (1981) _w234603
942			_cART
035			_a(INICN)39221
001			234802
999			_c234802 _d234802
040			_aAR-ReUNN _bspa _cAR-ReUNN _eaacr2