Reproductive biology and recruitment of Xiphopenaeus kroyeri in Suriname: Implications for resource management

The Atlantic seabob shrimp Xiphopenaeus kroyeri occurs abundantly in the shallow coastal waters of Suriname, where it is an important natural fishing resource for both industrial and artisanal fisheries. Studies on the species are very limited on the northern coast of South America, although information on the biology of exploited species is crucial for a sustainable and ecosystem-based fisheries management. In 2014, a year-round sampling was conducted to reveal the life cycle dynamics of X.kroyeri on a spatio-temporal scale along an estuary-ocean gradient. Hyper – and epibenthic samples were taken to sample the postlarval, juvenile and adult stages of X. kroyeri. Five abiotic parameters were recorded: temperature, salinity, Secchi depth, suspended matter and sediment. Results have shown that recruitment occurred continuously in the in- and offshore zone. A main and a smaller recruitment event (increased postlarvae density) occurred respectively in July and October in the inshore zone. The bottom temperature peaked during the main recruitment event in the in- and offshore zone. Postlarvae and small juveniles were more present in the shallow inshore zone, large juveniles and adults in the deep offshore zone. The sustainability of the fishery could be enhanced by a closed fishing season from June through August to protect the reproductive females during the main recruitment event.

Promotor(s) & Supervisor: M. Vincx, K. Hostens, A. De Backer

ISCED Categories

The highlighted icons, represent the fields of education (in compliance with ISCED Classification) engaged during this course/programme.

0522 - Conservation and environmental management", "0831 - Fisheries