Dear MARMAM readers,
I am pleased to announce the publication of the following article in the
proceedings of the IV Iberoamerican Congress about Aquaculture (CIVA2006)
(abstract bellow, this article is only in spanish language):
Díaz López, B.& Bernal Shirai J. A., 2006. Multivariate analysis to determine
the influence
of aquaculture on the presence of Bottlenose Dolphins Tursiops truncatus
(Montagu, 1821).
CIVA 2006 (http://www.civa2006.org), 282-290
Summary
Notable increases in coastal aquaculture make it vital to study the
environmental effects associated with their presence. Increase in organic
material, resultant from aquaculture activities, acts as an attractant for fish
species and consequently their predators. Many studies have examined the
effects of aquaculture on marine fauna in general, but there is a paucity of
studies examining, more specifically, the impacts of aquaculture on dolphins.
In 12 consecutives months of study, we realized 1 324 samples in a marine fin
fish farm off the northeastern coast of Sardinia, Italy. The objective of this
study was to determine the variables that may influence the presence and
abundance of dolphins in the fish farm area. Dolphins were observed year round
during the study period, 37% of the samples analyzed, but there was a clear
seasonal trend in their presence. Based on the results obtained in this study
we can discriminate two factors that influence the seasonal presence of
dolphins: water temperature and anthropogenic impacts (i.e. presence of
recreational boats and/or fishing boats). These results can be useful for
aquaculture management, in particular for the implementation of anti-predator
methods in marine fin fish farms similar to the one in our study.
A pdf file is available and can be sent on request ([EMAIL PROTECTED]), the
article will be available shortly from the BDRI's website www.thebdri.com
This paper is one in a series of studies that have been published over the
past years about the relationship between bottlenose dolphins and aquaculture.
Best wishes,
Bruno Díaz López
Zoologist & Chief Director
The Bottlenose Dolphin Research Institute - BDRI
V.Diaz 4, Golfo Aranci 07020 Italy
www.thebdri.com
[EMAIL PROTECTED]
Tel: 00 39 346 0815414
---------------------------------
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