NATURAL FOOD OF THE INTRODUCED "PEJERREY" (PATAGONINA HATCHERI) IN ÑE-LUAN LAGOON, RIO NEGRO

Authors

  • María Teresa Bello Centro Regional Universitario de Bariloche, Universidad Nacional del Comahue - CC. 1336 - (8400) San Carlos de Bariloche, Río Negro
  • María Marta Bunge Centro Regional Universitario de Bariloche, Universidad Nacional del Comahue - CC. 1336 - (8400) San Carlos de Bariloche, Río Negro
  • Miguel De Lourdes Baiz Dirección Nacional de Pesca Continental -Centro de Salrnonicultura Bariloche - C.C. 27 - (8400) San Carlos de Bariloche, Río Negro

DOI:

https://doi.org/10.21703/0067-8767.1991.20.2549

Keywords:

Feeding trophic spectrum, pejerrey.

Abstract

Seventy two digestive tracts of "pejerrey" (Patagonina hatcheri Eigenmann, 1927) from the Ñe-luan's lagoon, (Río Negro, Argentina), were analized between september 1980 and august 1982. Total lengths ranged from 96 to 385 mm. Five categories conform the trophic spectrum: macrophites, microcrustaceans,chironomids, molluscsand "others".Thenumerical percentage, the volumetric percentage and the frequency of occurrence were estimated to calcúlate the Índex of relative importance (IRI). Their seasonal variations were discussed. Conclusions about the natural food of P. hatcheri are given.

Downloads

Published

2024-01-25

How to Cite

Bello, M. T., Bunge, M. M., & De Lourdes Baiz, M. (2024). NATURAL FOOD OF THE INTRODUCED "PEJERREY" (PATAGONINA HATCHERI) IN ÑE-LUAN LAGOON, RIO NEGRO. Biologia Pesquera, (20), 13–19. https://doi.org/10.21703/0067-8767.1991.20.2549

Issue

No. 20 (1991): Biología Pesquera

Section

Artículos