Spatiotemporal variations of mysis larvae of penaeid shrimp in the Mandinga Lagoon System, Veracruz: abundance, biomass and their relationship with environmental and sedimentological variables (2008-2015).

• DOI: https://doi.org/10.22533/at.ed.813532508056

• Palavras-chave: mysis larvae, penaeid shrimp, Mandinga Lagoon System, estuarine recruitment.

• Keywords: mysis larvae, penaeid shrimp, Mandinga Lagoon System, estuarine recruitment.

• Abstract:

  This study analyzes the spatio-temporal variations in the abundance and biomass of mysis larvae of penaeid shrimp in the Mandinga Lagoon System (SLM), Veracruz, between 2008 and 2015, with the objective of understanding their ecological dynamics and their relationship with environmental and sedimentological factors. Larvae were collected at 13 stations distributed throughout the system, evaluating variables such as temperature, salinity, dissolved oxygen, transparency, sediment type and organic carbon content. The results showed notable fluctuations in density (0.51 to 1231.66 ind/100 m²) and biomass (0.01 to 12.15 g/100 m²), with maximums recorded mainly in areas with high submerged aquatic vegetation (SAV) cover and substrates rich in mud and organic matter, especially north of La Redonda and Mandinga. No individuals were observed in La Larga lagoon. The distribution presented an aggregate pattern and was not significantly correlated with physicochemical variables, suggesting that factors such as habitat structure and hydrological dynamics have a greater influence on larval retention. The study provides evidence for the ecological importance of SLM as a penisid breeding ground and underscores the need for systematic monitoring to assess the effects of anthropogenic disturbance and climate change on these coastal ecosystems.