Resource partitioning in a cetacean community from Uruguayan waters
0106 biological sciences
MARINE MAMMALS
STABLE ISOTOPES
https://purl.org/becyt/ford/1.6
ISOTOPIC NICHE
https://purl.org/becyt/ford/1
01 natural sciences
FEEDING ECOLOGY
DOI:
10.1111/mms.13077
Publication Date:
2023-10-02T14:55:13Z
AUTHORS (8)
ABSTRACT
AbstractThe study of resource partitioning within a community is central to understanding the processes that enable interspecific competition and coexistence. This study aimed to understand the resource partitioning and habitat preferences among odontocetes in Uruguay. We analyzed stable carbon and nitrogen isotopes data from the bone tissue of common dolphins (Delphinus delphis), Fraser's dolphins (Lagenodelphis hosei), false killer whales (Pseudorca crassidens), Lahille's bottlenose dolphins (Tursiops truncatus gephyreus), Burmeister's porpoises (Phocoena spinipinnis), and franciscana dolphins (Pontoporia blainvillei). Based on the isotopic values, false killer whale individuals were divided into two different ecological groups (ecotype 1 and 2). Isotopic values also suggest that franciscana dolphins, Burmeister's porpoises, Lahille's bottlenose dolphins, and false killer whales ecotype 1 feed on the continental shelf and/or high trophic level preys. At the other end of the gradient, values suggest Fraser's dolphins and false killer whales ecotype 2 use resources from the oceanic environment and/or lower trophic preys. Isotopic niche overlap was found between the common dolphin and Lahille's bottlenose dolphin and between Lahille's bottlenose dolphin and false killer whale ecotype 1. This work provides novel basic information about the trophic habit and feeding habitat of the odontocetes inhabiting one of the most important estuaries of South America.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (107)
CITATIONS (1)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....