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Fish assemblages in three fringed mangrove bays of Santa Cruz Island, Galapagos Marine Reserve


Llerena-Martillo, Y and Penaherrera-Palma, C and Espinoza, ER, Fish assemblages in three fringed mangrove bays of Santa Cruz Island, Galapagos Marine Reserve, Revista De Biologia Tropical, 66, (2) pp. 674-687. ISSN 0034-7744 (2018) [Refereed Article]


Copyright Statement

Copyright 2018 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.15517/rbt.v66i2.33400


Mangrove-fringed bays are highly variable ecosystems that provide critical habitats for fish species. In this study we assessed the fish assemblage in three mangrove-fringed bays (Punta Rocafuerte, Saca Calzón and Garrapatero) in the Southeast side of Santa Cruz Island, Galapagos Marine Reserve. Using gillnets, we carried out a total of 108 fieldtrips from January 2010 to December 2011. A total of 1 773 bony and 740 cartilaginous fishes belonging to 26 species and 15 families were identified at the same sampling sites. Species richness was higher in the protected bay (Garrapatero) than in those open to fishing (Punta Rocafuerte, Saca Calzón). Blacktip sharks (Carcharhinus limbatus, n= 729), Thoburn’s mullets (Mugil thoburni, n= 492), Peruvian mojarras (Diapterus peruvianus, n= 440), milkfish (Chanos chanos, n= 206) and the yellow fin mojarras (Gerres cinereus, n= 197) were the most common species across sites and season (cold and warm). The abundance of the most common species varied seasonally, with C. limbatus and C. chanos being more abundant in the warm season (December to April), and M. thoburni, C. limbatus and G. cinereus in the cold season (June to October). Temperature was the most important driver of abundance in C. limbatus and C. chanos, while salinity influenced Umbrina galapagorum. This study represents the first evaluation of the fish assemblage composition and dynamics in mangrove-fringed bays in the Galapagos Marine Reserve.

Item Details

Item Type:Refereed Article
Keywords:fisheries, gill net, mangrove bays, marine ecology, environmental factors, Galapagos
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture and fisheries stock assessment
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Marine biodiversity
UTAS Author:Penaherrera-Palma, C (Mr Cesar Penaherrera-Palma)
ID Code:132023
Year Published:2018
Web of Science® Times Cited:7
Deposited By:Ecology and Biodiversity
Deposited On:2019-04-17
Last Modified:2019-06-12
Downloads:50 View Download Statistics

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