[MARMAM] New Paper – Kogia whales in Brazilian coast - PlosOne

Jailson Fulgencio de Moura jailsonfm at gmail.com
Mon Jan 11 04:23:37 PST 2016


Dear MARMAM subscribers,



We are pleased to announce the recent publication of our paper *“Stranding
Events of Kogia Whales along the Brazilian Coast”* (January, 2016) in
*PlosOne*.



Moura, J.F., Acevedo-Trejos, E., Tavares, D.C., Meirelles, A.C.O., Silva,
C.P.N., Oliveira, L.R., Santos, R.A., Wickert, J.C., Machado, R.,
Siciliano, S. & Merico, A. (2015) *Stranding events of Kogia whales along
the Brazilian coast*. PLoS ONE, doi: 10.1371/journal.pone.0146108


​Abstract
​

The genus *Kogia*, which comprises only two extant species, *Kogia sima*
and *Kogia* *breviceps*, represents one of the least known groups of
cetaceans in the global ocean. In some coastal regions, however, stranding
events of these species have been relatively common over the last decades.
Stranding provides the opportunity to investigate the biology of these
cetaceans and to explore the epidemiological aspects associated with the
mortality of the organisms found on the beach. A number of disturbances
(including pelagic fisheries, chemical pollution, boat strikes, and noise
pollution) have been confirmed to pose a particular threat to the *Kogia*
species. However, no study has yet investigated potential relationships
between environmental conditions and stranding events. Here we analyse how
a collection of environmental, physical, and biological variables, such as
wind, sea surface temperature (SST), water depth, and chlorophyll-a,
correlate to *Kogia* stranding events along the Brazilian coast. The
results of our statistical analyses suggest that *K. sima* is more likely
found in warm tropical waters, which provide an explanation for the high
frequency of stranding in northeastern Brazilian coast. In contrast, *K.
breviceps* appears to have a preference for temperate and productive
waters. Wind speed results to be also an important factor for predicting
*Kogia* strandings in Brazilian coast. Additionally, literature information
in combination with our own data and analyses of stomach contents confirms
that oceanic cephalopods constitute the primary nutritional source of both
*Kogia* species. By using the available information as a qualitative proxy
for habitat preference and feeding ecology, our study provides a novel and
comprehensive assessment of *Kogia* stranding data in relation to
environmental conditions along the Brazilian coast.


A full copy of the paper can be downloaded at:

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0146108



Sincerely yours,



-- 

Dr. Jailson F. Moura

Leibniz Center for Tropical Marine Ecology

System Ecology Group

Fahrenheitstrasse 6

D - 28359 Bremen, Germany

Tel:+49(0)421/23800-105

www.zmt-bremen.de
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