[MARMAM] New Publication: Stranding patterns and feeding ecology of striped dolphins in Western Iberia (1981-2014)

Ana Marçalo amarcalo at gmail.com
Sat Feb 6 13:24:10 PST 2021

Dear MARMAM community,

My co-authors and I are pleased to share our newest publication at Journal
of Sea Research. The full article can be found here
https://authors.elsevier.com/a/1cXku4wy0KlAnM and will be free access until
march 28, 2021.

Marçalo A, Giménez J, Nicolau L, Frois J, Ferreira M, Sequeira M, Eira C,
Pierce, GJ, Vingada J, 2021. Stranding patterns and feeding ecology of
striped dolphins, Stenella coeruleoalba, in Western Iberia (1981–2014).
Journal of Sea Research 169 .101996.

Abstract: The striped dolphin, Stenella coeruleoalba, is one of the most
abundant cetacean species off the Western Iberian coast, however, studies
on the species regarding biology, ecology, threats or conservation efforts
are lacking. This study investigates stranding patterns (years 1981–2014)
and diet (2002–2014) of striped dolphins (Stenella coeruleoalba) off the
Portuguese mainland coast. Stranded animals were sampled along the whole
coast (n =
252). Most stranded striped dolphins were recorded in the first half of the
year and strandings increased over time. Analysis of stomach contents (n =
36) showed that striped dolphins in the area are mostly piscivorous (80% by
number and weight of the diet), taking pelagic, meso-pelagic and demersal
species. In terms of reconstructed biomass prey, sardine (Sardina
pilchardus) and blue whiting (Micromesistius poutassou) were the most
important. Prey items revealed that both sexes forage at a range of depths
(pelagic and demersal systems) in both neritic and oceanic habitats,
although females feed more often in coastal waters. Moreover, diet results
also indicate that striped dolphins may co-occur with other neritic
cetacean species, such as the common dolphin, Delphinus delphis, thus
sharing some preferred prey species. The study revealed that striped
dolphins on the Iberian coast interact with coastal fisheries sharing the
same target species. Management measures for fisheries will need to be
consistent with an ecosystem-based approach.

if you have questions or comments, please do not hesitate to contact us.

Kind regards,
On behalf of my co-authors,

Ana Marçalo

Ana Marçalo, PhD
Fisheries biologist; Post Doc; Invited Assistant Professor
email: amarcalo at ualg.pt; amarcalo at gmail.com

CCMAR - Centro de Ciências do Mar, Universidade do Algarve
Campus de Gambelas, 8005-139 Faro, Portugal
Office: L 23
Tlf: +351 289 800 051 (ext. 7394)


Project iNOVPESCA - Reducing bycatch of cetaceans in Algarve  (
Project RAAlg - Algarve Stranding Network (www.raalg.pt)
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