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Spatial and temporal habitat use by Penaeid shrimp (Decapoda: Penaeidae) in a coastal lagoon of the southwestern Gulf of Mexico

Por: Torres Velázquez, Jony Ramiro. Doctor [autor].
Sánchez Martínez, Alberto de Jesús [autor] | Barba Macías, Everardo [autor].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Penaeidae | Camarones | Preferencias de hábitat | Características fisicoquímicas del agua | Sedimentos fluvialesTema(s) en inglés: Penaeidae | Shrimps | Habitat preferences | Physicochemical characteristics of water | Sedimento fluvialDescriptor(es) geográficos: Laguna Mecoacán (Tabasco, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Regional Studies in Marine Science. volumen 34, article number 101052 (February 2020), páginas 1-12. --ISSN: 2352-4855Número de sistema: 59971Resumen:
Inglés

Knowledge of the environmental factors that influence the spatial-temporal densities of penaeid shrimp in Mecoacán Lagoon is important for understanding their relationship with the presence (migration) and estuarine habitat preferences. In the present study, the relationships between the physical-chemical components of water and sediments and the population dynamics of penaeid shrimp in Mecoacán Lagoon were evaluated according to a spatial-temporal and multihabitat approach. In six monitoring sites (Boca, Cerros, Mojarrero, Aspoquero Arrastradero and Pajaral), the density and biomass of shrimp were determined from November 2014 to October 2015 based on monthly captures with two nets (seine and renfro) in three habitats: mangrove, soft substrates without vegetation, and submerged aquatic vegetation that corresponds to seagrasses (seagrasses was registered only in Bocaand Cerros). The maximum salinity was found in Boca (23±2.6PSU), with pH values ranging from 7.9±0.1 to 8.3±0.2, and the maximum dissolved oxygen was found in Cerros (6.6±0.5mg/L). The average texture of sediments was 62±3.5% sand, 24±2.4% silt, and 14±1.2% clay.

The highest organic matter (7.8±1.2%) and nitrogen (875mg/kg) contents were recorded in Pajaral. A total of 5,085 penaeid shrimp were captured (seine 77% and renfro 33%), including the species Farfantepenaeus aztecus (Ives) (1,774 ind.), Farfantepenaeus duorarum (Burkenroad) (1,559 ind.), and Litopenaeus setiferus (L.) (1,752 ind.), with a total wet weight of 2,419 g. The spatial segregation patterns of penaeid shrimp suggest that their temporal distribution and habitat preferences are important for reducing interspecific competition. Salinity, dissolved oxygen, organic matter content, and sediment type were the factors that most influenced the spatial-temporal differences in the density and biomass of the penaeid shrimp among sites. Knowledge of the habitat distribution and preferences of key estuarine species such as penaeid shrimp can be used as an informational baseline for evaluating future environmental scenarios and modeling species distribution along the estuarine gradient.

Recurso en línea: https://www.sciencedirect.com/science/article/pii/S235248551930146X?via%3Dihub
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Disponible para usuarios de ECOSUR con su clave de acceso

Knowledge of the environmental factors that influence the spatial-temporal densities of penaeid shrimp in Mecoacán Lagoon is important for understanding their relationship with the presence (migration) and estuarine habitat preferences. In the present study, the relationships between the physical-chemical components of water and sediments and the population dynamics of penaeid shrimp in Mecoacán Lagoon were evaluated according to a spatial-temporal and multihabitat approach. In six monitoring sites (Boca, Cerros, Mojarrero, Aspoquero Arrastradero and Pajaral), the density and biomass of shrimp were determined from November 2014 to October 2015 based on monthly captures with two nets (seine and renfro) in three habitats: mangrove, soft substrates without vegetation, and submerged aquatic vegetation that corresponds to seagrasses (seagrasses was registered only in Bocaand Cerros). The maximum salinity was found in Boca (23±2.6PSU), with pH values ranging from 7.9±0.1 to 8.3±0.2, and the maximum dissolved oxygen was found in Cerros (6.6±0.5mg/L). The average texture of sediments was 62±3.5% sand, 24±2.4% silt, and 14±1.2% clay. eng

The highest organic matter (7.8±1.2%) and nitrogen (875mg/kg) contents were recorded in Pajaral. A total of 5,085 penaeid shrimp were captured (seine 77% and renfro 33%), including the species Farfantepenaeus aztecus (Ives) (1,774 ind.), Farfantepenaeus duorarum (Burkenroad) (1,559 ind.), and Litopenaeus setiferus (L.) (1,752 ind.), with a total wet weight of 2,419 g. The spatial segregation patterns of penaeid shrimp suggest that their temporal distribution and habitat preferences are important for reducing interspecific competition. Salinity, dissolved oxygen, organic matter content, and sediment type were the factors that most influenced the spatial-temporal differences in the density and biomass of the penaeid shrimp among sites. Knowledge of the habitat distribution and preferences of key estuarine species such as penaeid shrimp can be used as an informational baseline for evaluating future environmental scenarios and modeling species distribution along the estuarine gradient. eng

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