Influencia de las fases lunares en los desembarques de peces demersales capturados con enmalle de fondo en el Estero Salado
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2018
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Facultad de Ciencias Naturales. Universidad de Guayaquil
Resumen
La pesca artesanal que se desarrolla en Guayaquil ha sido poco estudia, principalmente la realizada en el Estero Salado, en la cual se muestreo los desembarques realizados con enmalle de fondo durante los periodos de luna llena y luna nueva, durante los meses de septiembre 2016 a enero 2017 que llegaban al puente de la A (Parroquia Letamendi) para su comercializacion. El objetivo de este trabajo era determinar si las fases lunares tenian un efecto sobre las capturas de recursos demersales, ademas de conocer su composicion y volumenes mensuales. Obteniendo un total de 25 especies entre peces, rayas y crustraceos y un desembarque total de 48.3 tn, siendo las familias mas representativas Ariidae, Sciaenidae y Mugilidae. Mientras que volumenes desembarcados por fases lunares fueron validados por medio de un analisis multivariado (ANOSIN), en el cual no se encontraron diferencias significativas entre estos, aunque enero 2017 fuera el mes de mayor captura (19.4 tn), pero a nivel de especies si hubo diferencias significativas, utilizando el analisis de similaridad de SIMPER, se determino que los generos Cynoscion y Mugil marcaron diferencias entre luna llena y luna nueva.
The artisanal fishing that takes place in Guayaquil has been little studied, mainly the one carried out in the Estero Salado, in which you can see the landings made with a bottom during the periods of full moon and new moon, during the months of September. 2016 to January 2017 that arrives at the A bridge (Parroquia Letamendi) for commercialization. The objective of this work was to determine if the lunar phases had an effect on the captures of demersal resources, besides knowing their composition and monthly volumes. Obtaining a total of 25 species among fishes, rays and crustaceans and a total landing of 48.3 tons, being the most representative families Ariidae, Sciaenidae and Mugilidae. While the results were analyzed by means of a multivariate analysis (ANOSIN), in which the number of tests was 19.4 tn, but at the species level if with significant differences, using SIMPER similarity analysis, it was determined that the genera Cynoscion and Mugil marked differences between full moon and new moon.
The artisanal fishing that takes place in Guayaquil has been little studied, mainly the one carried out in the Estero Salado, in which you can see the landings made with a bottom during the periods of full moon and new moon, during the months of September. 2016 to January 2017 that arrives at the A bridge (Parroquia Letamendi) for commercialization. The objective of this work was to determine if the lunar phases had an effect on the captures of demersal resources, besides knowing their composition and monthly volumes. Obtaining a total of 25 species among fishes, rays and crustaceans and a total landing of 48.3 tons, being the most representative families Ariidae, Sciaenidae and Mugilidae. While the results were analyzed by means of a multivariate analysis (ANOSIN), in which the number of tests was 19.4 tn, but at the species level if with significant differences, using SIMPER similarity analysis, it was determined that the genera Cynoscion and Mugil marked differences between full moon and new moon.
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FASES LUNARES, ESTUARIO, PESCA ARTESANAL, PECES DEMERSALES, DESEMBARQUES