Connections between Campeche Bank and Red Snapper Populations in the Gulf of Mexico via Modeled Larval Transport

Autor: Donald R. Johnson, Harriet M. Perry, Joanne Lyczkowski-Shultz
Rok vydání: 2013
Předmět:
Zdroj: Transactions of the American Fisheries Society. 142:50-58
ISSN: 1548-8659
0002-8487
Popis: The potential for Red Snapper Lutjanus campechanus on Campeche Bank to contribute to regional fisheries in the Gulf of Mexico through larval transport was studied using numerical circulation model data. A tracking algorithm was applied at an array of starting locations over Campeche Bank and simulated larval propagules launched every 3 d during the spawning seasons of four model years within the period 2003–2010. Successful recruitment was defined as arrival in water depths less than 200 m after 31 d of planktonic drift, regional recruitment being defined as a percentage of propagules launched. It was found that successful natal retention to Campeche Bank was high, varying between 67% and 73% of all launched propagules. However, successful recruitment to other regions around the Gulf of Mexico (GOM) was sporadic and extremely low. Robustness of the methodology was examined in a set of experiments involving larval depth and subgrid scale diffusion. The results suggest that larvae from Campeche Ban...
Databáze: OpenAIRE
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