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[Spatial and temporal abundance and distribution of Stomolophus meleagris (Rhizostomae: Stomolophidae) in a lagoon system southern Gulf of Mexico].

Authors: Félix, Francisco Javier; Garrido Mora, Arturo; Sánchez Alcudia, Yessenia; Sánchez Martínez, Alberto de Jesús; Granados Berber, Andrés Arturo; Ramos Palma, José Luis;

[Spatial and temporal abundance and distribution of Stomolophus meleagris (Rhizostomae: Stomolophidae) in a lagoon system southern Gulf of Mexico].

Abstract

Las escifomedusas se alimentan principalmente de crustáceos microscópicos; huevos y larvas de peces, moluscos y de otras medusas. La distribución y abundancia de la escifomedusa representa una importancia económica y ecológica ya que son depredadores que influyen en las dinámicas poblacionales de otras pesquerías. El presente trabajo se realizó de septiembre 2013 a agosto 2014 en el sistema lagunar Arrastradero-Redonda del estado de Tabasco, con el objetivo de aportar información sobre la distribución y abundancia espacial y temporal de la escifomedusa Stomolophus meleagris y su relación con los parámetros ambientales. Para su realización se efectuaron recorridos mensuales durante un ciclo anual y se colectaron muestras biológicas; realizándose 3 arrastres en cada una de las estaciones, en una área de 1 km2, con duración de 5 a 10 min con un chinchorro playero de monofilamento de 20 m de longitud por 3 m de altura y luz de malla de 1.5 cm con esos datos se realizó el análisis de eficiencia pesquera, (CPUE con Org. / Unidad de superficie evaluada) y se determinó la relación con los parámetros ambientales. Se estableció que la mayor abundancia se presentó de la estación 1 a la 3 con 7 a 19Org/km2 en los meses de abril a agosto del 2014 y su menor abundancia se observó en las estaciones 6 a 10 con un promedio de 1 Org/km2 en los meses de octubre 2013 a marzo del 2014. El análisis de correlación múltiple por pasos indicó que existe una fuerte asociación entre la CPUE y algunas variables ambientales estudiadas, observándose el 70.9 % de la variabilidad de los datos. La salinidad fue la variable más influyente explicando el 64.3 % de la variabilidad, seguida por la temperatura explicando un 3.6 % mientras el oxígeno disuelto explica solo el 2.9 % de variabilidad, principalmente debido a que en la zona confluyen una serie de factores geológicos, oceanográficos y biológicos favorables para la proliferación de esta especie ocasionada por el aporte de agua marina de la barra de Tupilco. Sin embargo falta realizar mayores investigaciones que permita cuantificar este recurso y establecer zonas de explotación comercial y realizar estudios sobre el aspecto biológico, principalmente hábitos reproductivos y alimenticios; que aporten información necesaria para diseñar planes adecuados sobre su posible uso de manera adecuada. Así mismo con los datos obtenidos en el presente trabajo podamos determinar el potencial pesquero de este recurso en el estado de Tabasco.

The scyphomedusae feed mainly on microscopic crustaceans, eggs and fish larvae, molluscs and some other jellyfishes. The distribution and abundance of the scyphomedusae has an economic and ecological impact as they are predators that have an influence on the population dynamics of other fisheries. This investigation took place in the lagoon system ‘Arrastradero-Redonda’, Tabasco, from September 2013 to August 2014, with the purpose to provide information on the distribution, and spatial and temporal abundance of Stomolophus meleagris; along with its relation to environmental parameters. A total of 10 stations were defined and biological samples were taken on a monthly basis during this annual cycle. For this purpose, three pulls with a beach seine monofilament (20m long by 3m height, mesh opening 1.5 cm, 5 to 10 minutes) per station were made within a 1 km2 area. Information obtained was used to calculate the fishing efficiency analysis (CPUE con org./Evaluated Area Unit) and to determine the relationship with the environmental parameters. Our results showed that the abundance in the stations 1 to 3 was from 7 to 19 org./km2 from April to August 2014; less organisms were observed in stations 6 to 10 (an average of 1 org./km2) from October 2013 to March 2014. The multiple correlation steps analysis indicated that there is a strong association between the CPUE and some environmental investigated variables, and a 70.9 % variability of the data was observed. The salinity resulted the most important variable because it determined a 64.3 % of variation; it was followed by the temperature with a 3.6 %; meanwhile, dissolved oxygen explained only the 2.9 %, this was mainly because within the area there are several geological, oceanographic and biological factors that favor the distribution of this species due to seawater contribution through the Tupilco bar. With the provided data with this investigation we were able to determine the fishery potential of this resource for Tabasco state. However, additional research is required to allow an extended quantification of this resource, to determine the commercial exploitation areas, and drive studies about reproductive and feeding habits, that may provide the necessary information to establish plans for sustainable use. 

Keywords

Population Density, abundance, Salinity, Time Factors, Scyphozoa, México, Population Dynamics, Temperature, distribución, abundancia, Oxygen, Spatio-Temporal Analysis, distribution, Stomolophus meleagris, Animals, Seawater, Seasons, Tabasco, Gulf of America, Animal Distribution, Ecosystem

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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