Abstract
Biological and ecological aspects of Eugerres plumieri were analyzed during an annual cycle from 1992 to 1993 in the fluvial-deltaic Pom-Atasta system associated with Términos Lagoon, Campeche (Mexico). It is a dominant species in the system, based on its numeric abundance, weight, high frequency and wide distribution. A total of 368 individuals were obtained, with a weight of 22,087 g and length ranging from 4.5 to 29.5 cm. The annual variation of the allometric coefficient b was from 2.727 to 3.3412. The condition factor varied from 0.393 to 1.0976. The population consists mainly of juvenile and adult individuals in gonadal stages I, II, III, IV, VI and VII, and more mature females than males were recorded after 17 cm. This species utilizes the system as a nursery, growth and feeding area. It has a varied trophic spectra and consumes at least 11 different groups. Its principal food items are ostracods, foraminifers, nematodes and tanaidaceans. It is a first order consumer. The Pom-Atasta system is located in a zone of intense fishing and oil activity, so it is important to advance in the knowledge of its fishing resources.
Highlights
The southern Gulf of Mexico is a prime coastal region for the study of fishery resources
Due to the economic importance of E. plumieri and the scarce knowledge of its biology and ecology in the Pom-Atasta system, the objective of this work is to analyze the size structure of the stock and determine the weight/length relationship, condition factor, gonadal maturity and feeding habits in different climates and areas of the system, in order to determine how this species uses the system during its biological cycle
Para cada una de las temporadas climáticas, en Eugerres plumieri uses the different habitats of Términos Lagoon and associated fluvial-deltaic systems during the different stages of its life cycle
Summary
The southern Gulf of Mexico is a prime coastal region for the study of fishery resources. On the coast of Campeche, Términos Lagoon and associated fluvial-deltaic systems present a wide variety of fish that are caught by artisanal fishermen. These ecosystems are used by many fish during different stages of their biological cycles. Eugerres plumieri (Cuvier, 1830) occurs widely and in great abundance in the different environments of Términos Lagoon and associated fluvial-deltaic systems. Since it is the largest mojarra of these systems, it is one of the fishery resources caught for local consumption
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