[MARMAM] New study about bottlenose dolphins in coastal Setúbal Bay (Portugal)

Francisco Martinho francisco.marinho at golfinhos.net
Wed Jul 23 09:34:15 PDT 2014

Dear colleagues,
We are pleased to announce our recently published article about a long-term
study of bottlenose dolphins in coastal Setúbal Bay (Portugal - just a
curious note, the last year's ECS conference was held at Setúbal).

Francisco Martinho. Andreia Pereira. Cristina Brito. Raquel Gaspar. Inês
Carvalho. 2014. Structure and abundance of bottlenose dolphins (*Tursiops
truncatus*) in coastal Setúbal Bay, Portugal. Marine Biology Research. DOI:

The article is available at:

The environmental plasticity of bottlenose dolphins leads to a range of
inter-specific variations in ecological parameters that make worldwide
generalizations difficult. Thus, regional studies about bottlenose dolphins
are important to the overall conservation of this species. The aim of this
study was to characterize for the first time bottlenose dolphins that occur
in the coastal regions of Setúbal (Portugal) using two temporally distinct
datasets: dataset 1 (1998–2001) and those in dataset 2 (2007–2011).
Bottlenose dolphins identified in dataset 1 were considered a closed and a
more cohesive group than dataset 2, with stable associations and an
abundance of 106 (95% CI = 69–192) individuals. Dataset 2 seemed to be
composed of an open group of 108 (95% CI = 83–177) animals, with a
migration rate of 19% (SE = 0.1) individuals per year, and with low
association values. The proportion of ‘regulars’ (dataset 1, 22%; dataset
2, 12%), ‘frequent’ (dataset 1, 10%; dataset 2, 14%) and ‘occasional’
(dataset 1, 68%; dataset 2, 73%) animals was relatively similar between
datasets. In addition, there was no matching of individuals between
datasets which could be related to large-scale movements of the individuals
and/or the carrying capacity of the study area.

If you would like to request a copy, please contact us at:
francisco.marinho at golfinhos.net

Kind regards,
Francisco Martinho
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