NDLI: The deep-water squid Octopoteuthis sicula Rüppell, 1844 (Cephalopoda: Octopoteuthidae) as the single species of the genus occurring in the Mediterranean Sea

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The deep-water squid Octopoteuthis sicula Rüppell, 1844 (Cephalopoda: Octopoteuthidae) as the single species of the genus occurring in the Mediterranean Sea

Marine Biology : Volume 163, Issue 8, August 2016

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The deep-water squid Octopoteuthis sicula Rüppell, 1844 (Cephalopoda: Octopoteuthidae) as the single species of the genus occurring in the Mediterranean Sea

Content Provider	Springer Nature Link
Author	Jereb, Patrizia Cannas, Rita Maiora, Porzia Bello, Giambattista Garibaldi, Fulvio Mereu, Marco Ancona, Francesco G. Ammendolia, Giovanni Battaglia, Pietro Duysak, Önder Hoving, Hendrik Jan T. Lefkaditou, Eugenia Lipinski, Marek R. Melis, Riccardo Peristeraki, Panagiota N. Ragonese, Sergio Romeo, Teresa Salman, Alp Santos, Begonia M. Villari, Alberto Cuccu, Danila
Copyright Year	2016
Abstract	The genus Octopoteuthis includes squids inhabiting meso- and bathypelagic waters worldwide. Of the seven presently named species distributed in the world’s oceans, only Octopoteuthis sicula has been reported for certain in the Mediterranean Sea to date. However, mixed and confusing descriptions of the systematic characters useful for identifying the species occur in the literature. Similarly, molecular analysis results available for the genus are contradictory and inconsistent. The research herein was undertaken firstly to clarify the systematic status of the genus in the Mediterranean Sea and confirm the presence of a single species, namely O. sicula. Additional goals were the assessment of the validity of systematic characters to identify the species and the analysis of beak morphology to provide useful tools in prey–predator relationship studies. Octopoteuthis specimens from various areas of the Mediterranean Sea and the Atlantic and Pacific oceans were compared, and the analysis of traditional morphological characters was combined with molecular genetics and the study of beaks. Molecular genetics and beak morphology results support the existence of a single species in the Mediterranean Sea. Additional evidence would suggest that this species is also distributed in the north-eastern Atlantic. The morphological characters reported in the literature to identify O. sicula did not identify Mediterranean specimens, with the exception of the two tail photophores. All information collected supports the need for a reconsideration of morphological characters used to identify Octopoteuthis species.
Starting Page	1
Ending Page	18
Page Count	18
File Format	PDF
ISSN	00253162
Journal	Marine Biology
Volume Number	163
Issue Number	9
e-ISSN	14321793
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-08-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Marine & Freshwater Sciences Freshwater & Marine Ecology Oceanography Microbiology Zoology
Content Type	Text
Resource Type	Article
Subject	Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics

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