Crecimiento de krill juvenil (Euphausia superba Dana, 1852) en torno a islas Shetland del Sur, durante el verano austral (1991-1994)
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Date
1999
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Abstract
Basados en el muestreo biológico practicado en los lances de pesca de cinco cruceros de la
pesquería de krill antártico, efectuados en torno a las Islas Shetland del Sur, durante los meses de
verano de los años 1991 a 1994, se determine el crecimiento de juveniles de E. superba a partir del
análisis mensual de la frecuencia de longitudes procesadas de acuerdo a los métodos Elefan,
Bhattacharya y Mix. Se estableció una función lineal entre la edad calculada y la longitud, con crecimiento durante el verano, próximo a 4 mm/mes. Se determinaron tres clases de edades, correspondientes a los desoves de diciembre, enero y febrero de 1991 a 1994
The information of biological samples from fishing hauls of five summer fishing cruises (1991-1994) for the Antarctic krill (E. superba), is analyzed. The age and growth of juvenile krill were determined using monthly length frequency distributions, analyzed with methods of Bhattacharya and the softwares Elefan and Mix. The relationship between age and mean length is lineal, with a monthly growth of 4 mm, during the summer. Three age classes were determined corresponding to December, January and February samplings of the years analyzed. These results agree with those found by other authors.
The information of biological samples from fishing hauls of five summer fishing cruises (1991-1994) for the Antarctic krill (E. superba), is analyzed. The age and growth of juvenile krill were determined using monthly length frequency distributions, analyzed with methods of Bhattacharya and the softwares Elefan and Mix. The relationship between age and mean length is lineal, with a monthly growth of 4 mm, during the summer. Three age classes were determined corresponding to December, January and February samplings of the years analyzed. These results agree with those found by other authors.
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Krill antártico
Citation
Serie Científica, nº 49, pp. 73-78, 1999