Trophic ecology of four shark species in the Gulf of Salamanca, Colombian Caribbean, using multi-tissue stable isotopes analysis.

Garzon Peña, Lina Vanesa; Barrera-García, Angélica; Delgado-Huertas, Antonio; Polo-Silva, Carlos

doi:10.1111/jfb.70126

Article (Scientific journals)

Trophic ecology of four shark species in the Gulf of Salamanca, Colombian Caribbean, using multi-tissue stable isotopes analysis.

Garzon Peña, Lina Vanesa; Barrera-García, Angélica; Delgado-Huertas, Antonio et al.

2025 • In Journal of Fish Biology, 107 (4), p. 1398 - 1410

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/345191

DOI
10.1111/jfb.70126

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40613216

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Keywords :

feeding habits; isotopic niche width; maternal signals; mixing model; trophic level; Nitrogen Isotopes; Carbon Isotopes; Animals; Caribbean Region; Nitrogen Isotopes/analysis; Carbon Isotopes/analysis; Colombia; Female; Male; Feeding Behavior; Diet; Liver/chemistry; Sharks/physiology; Food Chain; Ecosystem; Liver; Sharks; Ecology, Evolution, Behavior and Systematics; Aquatic Science

Abstract :

[en] Habitat use, feeding habits and trophic level were estimated for four shark species, Caribbean sharpnose shark Rhizoprionodon porosus, bull shark Carcharhinus leucas, juveniles of silky shark Carcharhinus falciformis and scalloped hammerhead shark Sphyrna lewini, based on stable isotope analysis (SIA) of δ15N and δ13C in three tissues (muscle, liver and blood) with different turnover rates. The δ15N values of R. porosus and C. leucas did not differ by sex/maturity stage or time scale. At the same time, juveniles of C. falciformis and S. lewini showed the loss of maternal isotopic signal that decreased based on the tissue scale time. The δ13C values indicated a shared habitat for three species: R. porosus, C. falciformis and S. lewini, the latter two with possible regional movements between coastal waters and open waters in their juvenile stage, whereas C. leucas prefers coastal waters because of a higher isotopic enrichment. The mixing model suggests that R. porosus and C. falciformis shared the most abundant prey in the ecosystem (small pelagic fish). Reef fish had a higher percentage contribution for C. leucas, whereas diet contribution of S. lewini was not clearly distinguished. All four species have trophic levels between 3.5 and 4.5, fulfilling meso- and top-predator roles, with generalist, opportunist or specialist behaviours based on isotopic niche breadth and variance comparisons.

Disciplines :

Environmental sciences & ecology
Food science

Author, co-author :

Garzon Peña, Lina Vanesa ; Université de Liège - ULiège

Barrera-García, Angélica; Facultad de Ciencias Naturales e Ingeniería, Fundación Universidad de Bogotá Jorge Tadeo Lozano, Bogotá and Santa Marta, Colombia ; Sharky Management and Consulting - SHARKY, Oldsmar, Florida, USA

Delgado-Huertas, Antonio; Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Avda. de las Palmeras No. 4 Armilla, Granada, Spain

Polo-Silva, Carlos; Facultad de Ciencias Naturales e Ingeniería, Fundación Universidad de Bogotá Jorge Tadeo Lozano, Bogotá and Santa Marta, Colombia ; Sharky Management and Consulting - SHARKY, Oldsmar, Florida, USA

Language :

English

Title :

Trophic ecology of four shark species in the Gulf of Salamanca, Colombian Caribbean, using multi-tissue stable isotopes analysis.

Publication date :

2025

Journal title :

Journal of Fish Biology

ISSN :

0022-1112

eISSN :

1095-8649

Publisher :

John Wiley and Sons Inc

Volume :

107

Issue :

Pages :

1398 - 1410

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.70126

Funding text :

The financial and logistical support for this project was provided by Anadarko and the Autoridad Nacional de Acuicultura y Pesca through the Fundaci\u00F3n Fauna Caribe Colombiana under an agreement with the Universidad de Bogot\u00E1 Jorge Tadeo Lozano under the Programa de Observadores Pesqueros de Colombia. We would like to thank, especially, the fishermen Edward, Darwin and Isnaldo, who made possible the collection of shark's samples and their processing at the port and Jhon Camilo Jaramillo De Castro for correcting and reviewing the English's manuscript.This research was funded by Autoridad Nacional de Acuicultura y Pesca (AUNAP) of Colombia, in partnership with Fundaci\u00F3n Fauna Caribe Colombiana (FFCC) and Anadarko Colombia Company (ACC), under the Programa de Observadores Pesqueros de Colombia (POPC).

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