[MARMAM] Publication: Cetaceans of Guinea-Bissau

Ruth Leeney ruth.leeney at gmail.com
Wed Jul 22 01:39:10 PDT 2015

Hello MARMAMers,

The following paper has recently been published:

Leeney RH, Weir CR, Campredon P, Regalla A, Foster J.
Occurrence of Atlantic humpback (*Sousa teuszii*) and bottlenose (*Tursiops
truncatus*) dolphins in the coastal waters of Guinea-Bissau, with an
updated cetacean species checklist.
Journal of the Marine Biological Association of the UK.

There is a paucity of information on the cetacean fauna of Guinea-Bissau in
West Africa. We compiled records published in the literature and novel
unpublished sighting data (2008–2014) to examine the occurrence and
distribution of cetacean species. At least 10 species were verified to
occur in Guinea-Bissau waters, of which eight were documented from a small
number of sightings, whaling captures or skeletal remains. By far the most
frequently recorded species were the common bottlenose dolphin (*Tursiops
truncatu*s) (N = 146) and the Atlantic humpback dolphin (*Sousa teuszii*)
(N = 110). These two species were sympatric in distribution, both being
found throughout coastal waters from the northern regions of Canal de Jeta
and Rio Mansoa south to the Rio Cacine and around the Arquipelago dos
Bijagos. However, differences were apparent in their finer-scale
distribution and in the distance of sightings from shore, with bottlenose
dolphin sightings generally occurring further from shore (and especially in
the region of the Canal do Geba) than Atlantic humpback dolphins. Sightings
indicate that both species likely inhabit Guinea-Bissau waters throughout
the year. Dedicated systematic cetacean survey work is urgently needed in
coastal Bissau-Guinean waters in order to ascertain the abundance,
spatio-temporal distribution, population structure and causes of mortality
of bottlenose and Atlantic humpback dolphins, particularly given the
Vulnerable conservation status of the latter species. Clarification of the
status of cetaceans in offshore waters requires survey
effort throughout the Guinea-Bissau EEZ.

Please contact me if you would like further information or a pdf. Best


Ruth H. Leeney, PhD

Benguela Research & Training
Walvis Bay, Namibia
T: (+264)-81-809-8214


*The Protect Africa's Sawfishes project*
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