Medición de la fuerza del blanco acústico de dos especies de peces marinos de las familias Lutjanidae y Haemulidae (pargo criollo, Lutjanus analis y ronco amarillo, Haemulon sciurus)
Résumé
This paper presents the results of TS equations (Acoustic Target Strength) in the dorsal aspect of two commercial marine fishes (mutton snapper, Lutjanus analis and bluestriped grunt, Haemulon sciurus) in the Gulf of Batabanó, Cuba. Measurements were executed in Puerto Esperanza (Pinar del Río, Cuba) and Xcalak (Yucatan Peninsula, Mexico) in places of shallow and clear waters with weak current. A Dual Beam Echosounder with digital transducer DT 5000 and 129 KHz frequency was used. Fishes were measured at 3 m deep. The equation obtained for Haemulon sciurus was TS(db) =21.9 log L(cm) - 69.2, r =0.75 and reference value calculated to make it comparable with other authors of b20= -66.38; while for Lutjanus analis it was TS(db) =21.7 log L(cm)-69.2, r = 0.81 and b20= -65.68. These equations can be used in the calculation of TS-length (dorsal aspect) widespread equation for tropical species in Caribbean areas.
Domaines
Sciences agricoles
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