[MARMAM] New publication on application of stable isotopes to assess the feeding ecology of long-finned pilot whale (Globicephala melas) in the Northeast Atlantic Ocean

Silvia Monteiro silvia.sm.monteiro at gmail.com
Wed Jan 28 08:10:26 PST 2015


Dear Marmam Readers,

I am very pleased to announce the following publication:

Silvia Monteiro; Marisa Ferreira; José V. Vingada; Alfredo López; Andrew
Brownlow; Paula, Méndez-Fernández (2015). Application of stable isotopes to
assess the feeding ecology of long-finned pilot whale (*Globicephala melas*)
in the Northeast Atlantic Ocean. Journal of Experimental Marine Biology and
Ecology 466: 55-63 doi:10.1016/j.jembe.2015.01.007.

Abstract

In order to improve our knowledge on the feeding ecology of long-finned
pilot whales (*Globicephala melas*) in Northeast Atlantic waters, skin
samples of 68 long-finned pilot whales stranded in Northwest Iberia (*n* = 22)
and Scotland (*n* = 46) were analysed using stable isotopes of δ13C and δ15N.
Isotopic mixing models were applied to obtain a quantitative estimate of
the proportion of the main prey species in the diet of pilot whales. Stable
isotope analysis revealed that 57.8–73.8% of the diet in Northwest Iberia
consisted in curled octopus (*Eledone cirrhosa)*, followed by European
flying squid (*Todarodes sagittatus)*, while in Scotland the predominant
prey species was either *Histioteuthis* sp. or *T. sagittatus*, depending
of the trophic enrichment factor applied. These results are generally in
accordance with previous stomach content studies; however, the isotopic
analysis may provide new information regarding key prey species and habitat
use that could be missed or underestimated if only stomach contents
analysis were used. Additionally, considering that the Atlantic Coast of
Iberia was responsible for 95% of the landings of the main prey consumed by
pilot whales in this area, between 2000 and 2010, these data provide
trophic baseline information to be taken into account in fishery impact
assessment studies and management decisions.


For an early view of this paper, please visit:

http://www.sciencedirect.com/science/article/pii/S0022098115000088


If you are unable to download the article, please contact me by email and I
will be
happy to send you a copy:silvia.sm.monteiro at gmail.com


Best wishes,

Silvia Monteiro
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