Comportamiento de forrajeo de aves en el área de estanques de acuicultura de la estación experimental 28 millas, Bataán, Limón, Costa Rica
Archivos
Fecha
2008
Autores
Bolaños Redondo, Silvia Elena
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Editor
Universidad Nacional (Costa Rica)
Resumen
Se determinó el comportamiento de forrajeo de las aves del área de estanques de la Estación Experimental 28 Millas, en Bataán, Limón, Costa Rica, para conocer el efecto en la producción acuícola del lugar. El estudio abarcó de febrero a agosto del 2006, en el que se utilizaron los métodos ad libitum e individuo focal, con los que se listaron los comportamientos y se identificaron dichas conductas en el individuo muestreado en periodos de 15 minutos, registrando cada 20 segundos. Se identificaron 16 especies de aves, de las cuales, aquellas que presentaron mayor frecuencia en sus registros fueron la gallina de agua (Porphyrio martinica), la jacana (Jacana spinosa) y la garcilla verde (Butorides virescens), las dos primeras utilizan el área, como sitio de forrajeo y hábitat reproductivo. Se identificaron 18 comportamientos, destacando: locomoción en pasto, descanso e intentos de captura. De las especies identificadas, un 50% se observaron forrajeando de diferentes recursos alimentarios: caracoles de agua dulce, peces, insectos, alimento para peces y lombrices. La depredación de peces obtenida de tan sólo 0,04%, representa una pérdida de ¿2 400, realizada en su totalidad por la garcilla verde, en estanques de tilapias entre los 1 y menos de 20 cm, presas fáciles de ser depredadas por la especie. Se observó una mayor vigilancia y éxito de captura en estanques recién sembrados (peces de 1,56 gr). Se presentan como potenciales depredadores: el cormorán (Phalacrocorax brasilianus), el águila pescadora (Pandion haliaetus), el martín pescador collarejo (Megaceryle torquatus), el martín pescador amazónico (Chloroceryle amazona) y el martín pescador verde (C. americana). Se recomienda realizar una vigilancia constante en estanques recién sembrados y un seguimiento de la actividad de las aves en los estanques de la Estación.
The foraging behavior of birds in the pond area of the 28 Miles Experimental Station, in Bataán, Limón, Costa Rica, was determined to determine the effect on the aquaculture production of the place. The study covered from February to August 2006, in which the ad libitum and focal individual methods were used, with which the behaviors were listed and said behaviors were identified in the sampled individual in periods of 15 minutes, recording every 20 seconds. 16 species of birds were identified, of which, those that presented the highest frequency in their records were the water hen (Porphyrio martinica), the jacana (Jacana spinosa) and the green heron (Butorides virescens), the first two use the area , as a foraging site and reproductive habitat. Eighteen behaviors were identified, highlighting: locomotion on grass, rest and capture attempts. Of the identified species, 50% were observed foraging on different food sources: freshwater snails, fish, insects, fish food, and earthworms. The predation of fish obtained from only 0.04%, represents a loss of ¿2 400, made entirely by the green heron, in tilapia ponds between 1 and less than 20 cm, easy prey to be preyed on by the species. Greater vigilance and capture success were observed in recently stocked ponds (1.56 gr fish). The cormorant (Phalacrocorax brasilianus), the osprey (Pandion haliaetus), the collared kingfisher (Megaceryle torquatus), the Amazonian kingfisher (Chloroceryle amazona) and the green kingfisher (C. americana) appear as potential predators. It is recommended to carry out constant surveillance in newly planted ponds and monitoring of bird activity in the Station's ponds.
The foraging behavior of birds in the pond area of the 28 Miles Experimental Station, in Bataán, Limón, Costa Rica, was determined to determine the effect on the aquaculture production of the place. The study covered from February to August 2006, in which the ad libitum and focal individual methods were used, with which the behaviors were listed and said behaviors were identified in the sampled individual in periods of 15 minutes, recording every 20 seconds. 16 species of birds were identified, of which, those that presented the highest frequency in their records were the water hen (Porphyrio martinica), the jacana (Jacana spinosa) and the green heron (Butorides virescens), the first two use the area , as a foraging site and reproductive habitat. Eighteen behaviors were identified, highlighting: locomotion on grass, rest and capture attempts. Of the identified species, 50% were observed foraging on different food sources: freshwater snails, fish, insects, fish food, and earthworms. The predation of fish obtained from only 0.04%, represents a loss of ¿2 400, made entirely by the green heron, in tilapia ponds between 1 and less than 20 cm, easy prey to be preyed on by the species. Greater vigilance and capture success were observed in recently stocked ponds (1.56 gr fish). The cormorant (Phalacrocorax brasilianus), the osprey (Pandion haliaetus), the collared kingfisher (Megaceryle torquatus), the Amazonian kingfisher (Chloroceryle amazona) and the green kingfisher (C. americana) appear as potential predators. It is recommended to carry out constant surveillance in newly planted ponds and monitoring of bird activity in the Station's ponds.
Descripción
Bolaños Redondo, S. E. (2008). Comportamiento de forrajeo de aves en el área de estanques de acuicultura de la estación experimental 28 millas, Bataán, Limón, Costa Rica. [Tesis de Licenciatura]. Universidad Nacional de Costa Rica.
Palabras clave
ALIMENTACION AVICOLA, AVES, PRODUCCION DE AVES, ACUICULTURA DE AGUA DULCE, BATAN (MATINA, LIMON), POULTRY FEED, BIRDS