Spatio-temporal dynamics of larval fish in a tropical estuarine mangrove: example of the Mahury river estuary (French Guiana)

Type Article
Date 2018-02
Language English
Author(s) Rousseau Yann1, 2, Blanchard FabianORCID1, 3, Gardel Antoine1, 4
Affiliation(s) 1 : CNRS, IFREMER, F-97300 Cayenne, France.
2 : Univ Guyane, USR Mixte LEEISA, CNRS Guyane, IFREMER,Ctr Rech Montabo, 275 Route Montabo, F-97300 Cayenne, France.
3 : IFREMER, Domaine de Suzini, BP477, F-97331 Cayenne, France.
4 : CNRS Guyane, Ctr Rech Montabo, 275 Route Montabo, F-97300 Cayenne, France.
Source Canadian Journal Of Fisheries And Aquatic Sciences (0706-652X) (Canadian Science Publishing, Nrc Research Press), 2018-02 , Vol. 75 , N. 2 , P. 235-246
DOI 10.1139/cjfas-2016-0267
WOS© Times Cited 14
Note Special issue “Dispersal during early life history of fish”, a product of the 39th Annual Larval Fish Conference, Vienna, Austria, 12–17 July 2015.

The present study focuses on the structure and dynamics of the ichthyoplankton community of the Mahury Estuary (French Guiana) and the factors that influence them. Data were collected on three mangrove sites located in the inner, middle, and outer areas of the estuary. More than 45 000 larvae were collected, representing 31 families and 67 taxa. The community was numerically dominated by few species: Engraulidae was the most abundant family, followed by Gobiidae, Eleotridae, and Sciaenidae. As expected, the most abundant larval taxa were estuarine and mangrove species, with the addition of freshwater species in the inner area of the estuary and taxa with marine affinities in the outer area. The densities of most species were influenced by site more than by season. Temporal variations in the dominant species were influenced largely by their life history strategy, with a majority of the fish species spending their entire life history in mangroves and estuaries.

Full Text
File Pages Size Access
Author's final draft 40 904 KB Open access
12 1 MB Access on demand
Top of the page