Composition, distribution and trophic relationships of the fish fauna of the Negro river, Patagonia Argentina
Keywords:
native fish, exotic fish, ecological indexes, fish distributionAbstract
The Patagonic ictiogeographic region is characterized by a low species diversity. Despite that the Negro river is the most important water body in the region, both in terms of the size of its drainage basin and of its socioeconomic importance, its fish fauna has scarcely been studied. The present paper addresses biogeographic and ecological characteristics related to its fish. Gill net gangs, electro fishing and beach seine nets were used to sample seasonally five stations along the river. Fish fauna composition and distribution were analyzed throughout different ecological indexes. Diet composition was also analyzed to establish trophic roles, competition and piscivory. We caught seven native and six exotic species; two of them (Corydoras paleatus and Cyprinus carpio) represent a widening of their austral distribution. The natives Odontesthes hatcheri, Percychthis colhuapiensis, P. trucha and Jenynsia multidentata were more important in terms of numbers in catches. Ecological indexes show that the lower part of the Negro river differs from the rest of the river with higher numbers of O. hatchery and J. multidentata. Eight trophic groups were found as well as evidence of diet overlapping and considerable piscivory. Presence and distribution of fish in the Negro river is strongly influenced by introduction by men, either accidentally or intentionally. Impacts by introduced species need to be addressed, specially in terms of emerging processes between native and exotic fish, taking into special consideration the negative impacts that the rainbow trout and the carp have already had in different parts of the world.
References
ALMIRÓN, A; M AZPELICUETA; JR CASCIOTTA & A LÓPEZ CAZORLA. 1997. Ichthyogeographic boundary between the Brazilian an Austral subregions in South América. Biogeographic, 73(1):23-30.
ARRATIA, G; MB PEÑAFORT & S MENU MARQUE. 1983. Peces de la región sureste de los Andes y sus probables relaciones biogeográficas actuales. Desert, 7:48-107.
AZPELICUETA, MM; A ALMIRÓN; A LÓPEZ-CAZORLA & J CACIOTTA. 1996. Geographical distribution of Galaxias maculatus (Jenyns) (Pisces: Osmeriformes: Galaxidae) in Patagonia. Biogeographic, 72:157-160.
BAIGÚN, C & R FERRIZ. 2003. Distribution patterns of native freshwater fishes in Patagonia (Argentina). Org. Divers. Evol., 3:151-159.
BAIGÚN, C; G LÓPEZ; A DOMÁNICO; R FERRIZ; S SVERLIJ & RD SCHENKE. 2002. Presencia de Corydorass paleatus (Jenyns, 1842), una nueva especien brasílica en el norte de la Patagonia (Río Limay) y consideraciones ecológicas relacionadas con su distribución. Ecol. Austral, 12:41-48.
BELLO, MT. 2002. Los peces autóctonos de la Patagonia Argentina. Distribución natural. Cuadernos Universitarios. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche.
BIANCO, PG. 1990. Proposta di impiego di indici e di coefficienti per la valutazione dello stato di degrade dell’ittiofauna autoctona delle acque dolci. Rivista di Hidrobiología, 29: 131-149.
BROWN, LR & PB MOYLE. 1997. Invading species in the Eel River, California: successes, failures, and relationships with resident species. Environ. Biol. Fishes, 49:271-291.
CAMARGO, JA. 1992. Structural and trophic alterations in macrobenthic communities downstream from a fish farm outlet. Hidrobiología, 242:41–49
CAZZANIGA, NJ. 1981. Caracterización químico- faunística de canales de drenaje del Valle Inferior del Río Colorado. Ecosur, 8:24-46.
CUSHING, EC; KW CUMMINS & GW MINSHALL. 1995. Ecosystem of the World. River and Stream Ecosystem, 22:257-293.
CUSSAC, VE; D RUZZANTE; S WALDE; PJ MACCHI; V OJEDA; MF ALONSO ET AL. 1998. Body shape variation of three species of Percichthys in relation to their coexistence in the Limay river basin, in Northern Patagonia. Environ. Biol. Fishes, 53:143-153.
D’ANTONIO, CM. 1993. Mechanisms controlling invasion of coastal plant communities by the alien succulent Carpobrotus eludis. Ecology, 74:83-95.
DE APARICIO, FO & HA DIFRIERI. 1958. La Argentina. Suma de geografía. Peuser. Bs.As, Argentina.
ELVIRA, B. 1995. Native and exotic freshwater fishes in Spanish river basins. Freshw. Biol., 33 (1):103–108.
FERRIZ, RA. 1988. Relaciones tróficas de trucha marrón Salmo fario Linné y trucha arco iris Salmo gairdneri Richardson, (Osteichthyes, Salmoniformes) en un embalse norpatagónico. Stud. Neotrop. Fauna Environ., 23:123-131.
FERRIZ, RA. 1989. Alimentación de Percichthys colhuapiensis (Mac Donagh, 1955) y P. trucha (Girard, 1854) (Osteichthyes, Percichthyidae) en el embalse Ramos Mexía, provincia del Neuquén, Argentina. Iheringia, 69:109-116.
FERRIZ, RA. 1993/1994. Algunos aspecto de la dieta de cuatro especies ícticas del río Limay (Argentina). Revista de Ictiología, 2/3:1-7.
HARVEY, J & IG COWX. 1996. Electric fishing for the assessment of fish stocks in large rivers. [1] Pp. 11-26 in: IG Cowx (ed). Stock assessment in inland fisheries. 1o edn. Fishing New Books.
KOHEN, J. 2004. Carp (Cyprinus carpio) as a powerful invader in Australian waterways. Freshw. Biol., 49:882-894.
LASTA, CA. 1995. La bahía Sanborombón; zona de desove y cría de peces. Tesis no 636. Facultad de Ciencias Naturales y Museo (UNLP). Argentina. 304 pp.
LIOTTA, J. 2006. Distribución geográfica de los peces de aguas continentales de la República Argentina. ProBiota, no3. 701 pp.
LODGE, DM. 1993. Biological invasions: lessons for ecology. Trends Ecol. Evol., 8:133-137.
LÓPEZ, HL. 2001. Estudio y uso sustentable de la biota austral: Ictiofauna continental Argentina. Revista Cubana de Investigación Pesquera. Suplemento Especial. 35pp.
LÓPEZ, HL; AM MIQUELARENA & J PONTE GÓMEZ. 2005. Biodiversidad y distribución de la ictiofauna mesopotámica. Temas de la biodiversidad del litoral fluvial argentino. Miscelanea, 14:311-354.
LÓPEZ-ARBARELLO, A. 2004. Taxonomy of the genus Percichthys (Perciformes: Percichthyidae). Ichthyol. Explor. Freshwater, 4:331-350.
MACCHI, PJ. 2004. Mecanismos de comportamiento vinculados a respuestas de escape y ataque entre Galaxias maculatus y sus predadores. Tesis doctoral, Universidad Nacional del Comahue. Bariloche, Argentina.
MACCHI, PJ; V CUSSAC; MF ALONSO & MA DENGRI. 1999. Predation relationships between introduced salmonids and native fish fauna in lakes end reservoirs of northern Patagonia. Ecol. Freshw. Fish., 8:227-236.
MACCHI, PJ; MA PASCUAL & PH VIGLIANO. 2007. Differential piscivory of the native Percichthys trucha and exotic salmonids upon the native forage fish Galaxias maculatus in Patagonian Andean lakes. Limnologica, 37:76-87.
MATTHEWS, WJ. 1998. Patterns in freshwater fish ecology. 2nd edn. Chapmann & Hall. Norwall, Massachusetts. 756 pp.
MCDOWELL, RM. 2003. Impacts of introduced salmonids on native galaxiids in New Zealand upland streams, a new look at an old problem. Trans. Am. Fish. Soc., 132:229-238.
MILANO, D; VE CUSSAC; PJ MACCHI; DE RUZZANTE; MF ALONSO ET AL. 2002. Predator associated morphology in Galaxias platei in Patagonian lakes. J. Fish Biol., 61/1:138-156.
MOYLE, PB & T LIGHT. 1996. Biological invasions of freshwater: empirical rules and assembly theory. Biol. Conserv., 78:149-161.
NAIMAN, RJ & RE BILBY. 1998. River ecology and management. Lesson from the Pacific Coastal Ecoregion. Springer- Verlag. New York, Inc. 705 pp.
NORUSIS, MJ. 1986. SPSS/PC+ Advanced Statistics. SPSS Inc. Chicago. 328 pp.
ORTUBAY, S & V CUSSAC. 2000. Threatened fishes of the world: Gymnocharacinus bergii STEINDACHNER, 1903 (Characidae). Environ. Biol. Fishes, 58:144.
PASCUAL, M; PJ MACCHI; J URBANSKI; F MARCOS; C RIVA ROSSI; M NOVARA ET AL. 2002. Evaluating poential effects of exotic freshwater fish from imcomplete species presence-absence data. Biol. Invasions, 4:101-113.
PIELOU, EC. 1975. Ecological diversity. Wiley. Nueva York. 165 pp.
RINGUELET, RA. 1975. Zoogeografía y ecología de los peces de aguas continentales de la Argentina y consideraciones sobre las áreas ictiológicas de América del Sur. Ecosur, 2(3):122 pp.
RINGUELET, RA & RH ARAMBURU. 1961. Peces argentinos de agua dulce. Claves de reconocimiento y caracterización de familias y subfamilias, con glosario explicativo. AGRO. Publicación técnica. Año III no7. 98 pp.
ROSS, ST. 1991. Mechanisms structuring stream fish assemblages: are there lessons from introduced species? Environ. Biol. Fishes, 30:359-368.
RUZZANTE, DE; S WALDE; V CUSSAC; P MACCHI; M ALONSO ET AL. 2003. Resource polymorphism in a Patagonian fish Percichthys trucha (Perci- chthyidae): phenotypic evidence for interlake pattern variation. Biol. J. Linn. Soc., 78: 497-515
SCHÖENER, TW. 1970. Non-syncronous spatial overlap of Lizards in patchi habitats. Ecology, 51:408-418.
TAYLOR, JN; J COURTENAY & JA MCCANN. 1984. Known impacts of exotic fishes in the continental United States. Pp 332-373 in: WR Courtney, Jr & JR Stauffer, Jr. ed). Distribution, Biology and Management of Exotic Fishes. John Hopkins University Press. Baltimore.
VANNOTE, R; G MINSHALL; K CUMMINS; JR SEDELL & CE CUSHING. 1980. The river continuum concept.Canadian J. Fish Aquat. Sci., 37:130-137.
WALLACE, RK. 1981. An assesment of diet-overlap indexes. Trans. Am. Fish. Soc., 110:72-76 pp.
WELCOMME, RL. 1985. River fisheries. FAO Fisheries Technical Paper 262. 330 pp.
WELCOMME, RL. 1988. International Introductions of Inland Aquatic Species. FAO Fisheries Technical paper 294. 318 pp.
WILCOVE, DS; D ROTHSTEIN; J DUBOW; A PHILLIPS & E LOSS. 1998. Quantifying threats to imperiled species in the United States. BioSciense, 48:607.
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