Resumen.-Se analizó la variación espacio temporal de la abundancia del ictioplancton en la laguna El Quelele, bahía de Banderas, Nayarit. Se realizaron 20 arrastres zooplanctónicos diurnos, estacionalmente de primavera a invierno del 2001. De un total de 20 muestras de zooplancton se obtuvieron 224,4 larvas de peces las cuales estuvieron representadas por seis familias, ocho géneros y seis especies, siendo Engraulis mordax la especie más abundante (68 org. 1000 m -3 ), seguida de Dormitator latifroms (37 org. 1000 m -3 ) y Trachinotus rhodopus (18 org. 1000 m -3 ). Las variaciones de la abundancia espacio temporal estuvieron influenciadas por la temperatura (29,,6°C) y salinidad superficiales (11-34,8 psu) así como por las condiciones de marea y época del año. Las mayores concentraciones se presentaron durante otoño (81 org. 1000 m -3 ) e invierno (43 org. 1000 m -3 ), asociadas a la época fría y las menores abundancias en primavera (21 org. 1000 m -3 ) y verano asociadas a la época cálida con abundantes lluvias; en verano no se obtuvieron larvas. El índice de Shannon indicó que el sitio de muestreo 1 presentó el valor más alto de diversidad (1,47), en tanto que, por estación del año, la diversidad fue prácticamente homogénea. El análisis de cluster mostró una mayor afinidad entre los sitios de muestreo 2 y 3, con un valor de 1,05 y entre los meses fríos (otoño e invierno), con un valor de 0,83.Palabras clave: Larvas de peces, diversidad, variación espaciotemporal, parámetros ambientales, Pacífico noreste Abstract.-This study presents an analysis of a spatial and temporal variation of ichthyoplankton abundance in the lagoon El Quelele, Bahía de Banderas, Nayarit. Twenty diurnal plankton tows were conducted seasonally from spring to winter 2001. Of twenty total samples of zooplankton 224,4 fish larvae were obtained, represented by six families eight genera and six species, being Engraulis mordax the most abundant species (68 org. m -3 ), followed by Dormitator latifroms (37 org. m -3 ) and Trachinotus rhodopus (18 org. m -3 ). Variations of the spatio-temporal abundance were influenced by surface temperature (29,8-31,6°C) and salinity (11-34,8 psu) as well as by tidal conditions and season. The highest concentrations occurred during autumn ( 81 org. m -3 ) and winter (43 org. m -3 ) associated to the cold season, and smallest abundances in spring (21 org. m -3 ) and summer associated to the warm season and abundant rains; in summer, no larvae were captured. The Shannon index showed that site of sampling 1 presented the highest diversity value (1,47) whereas, by season diversity was practically homogenous. Cluster analysis showed greater affinity between sites 2 and 3 (1,05) and between cold months (autumn and winter) with a value of 0,83.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.