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Vol. 57, 2018
(update: 2018.07.26; 12.30)
New Data on the Systematics of
Comb-fin Squids Chtenopteryx
spp. (Cephalopoda: Chtenopterygidae) from the Canary Islands
Alejandro
Escánez1,2,*, Álvaro Roura3, Rodrigo Riera4,
Ángel Francisco González3, and Ángel Guerra3
doi:10.6620/ZS.2018.57-40
1BioCephaLab.
Departamento de Ecoloxía e Bioloxía Animal, Edificio de Ciencias
Experimentais, Campus As Lagoas-Marcosende, Universidade de Vigo, 36310
Vigo, Spain
2Departamento de Biología Animal. Facultad de
Biología. Avenida Astrofísico F. Sánchez, s/n, 38206. Universidad de la
Laguna. Tenerife, Spain. E-mail: aescanez@msn.com
3ECOBIOMAR, Instituto de Investigaciones Marinas
(IIM-CSIC). Eduardo Cabello 6, 36208 Vigo, Spain. E-mail:
chiquipulpi@gmail.com; afg@iim.csic.es, angelguerra@iim.csic.es
4Departamento de Ecología, Facultad de Ciencias,
Universidad Católica de la Santísima Concepción, Casilla 297,
Concepción, Chile. E-mail: rriera@ucsc.cl
(Received 17 February 2018; Accepted 11 July
2018; Communicated by Benny K.K. Chan)
Alejandro
Escánez, Álvaro Roura, Rodrigo Riera, Ángel Francisco González, and
Ángel Guerra (2018) The systematics of the comb-fin squid
species is problematic and poorly resolved. In total, 53 specimens of
comb-fin squids (Chtenopteryx
spp.) were caught at depths ranging from 30 to 800 m off the Canary
Islands (NE Atlantic Ocean). Mantle lengths of the individuals ranged
from 18 to 43 mm and the sample included immature, mature male and
mature female specimens. Two species of comb-fin squids, Chtenopteryx canariensis and C. sicula, were identified by
combining traditional morphological characters with a molecular
analysis of a fragment of the cytochrome c
oxidase subunit I (COI) gene. Intra- and interspecific genetic
distances and maximum likelihood tree analyses based on COI sequences
available from GenBank suggest the existence of at least four species,
two from the Pacific and two from the Atlantic Ocean. Our data expand
the current geographic range of C.
canariensis
from the NE to NW Atlantic. In the GenBank database, several sequences
of comb-fin squid in different species-specific clades have been
attributed only to C. sicula,
indicating the possible existence of cryptic species and the need to
re-analyse these data.
Key words: Chtenopteryx sicula, Chtenopteryx canariensis,
Cytochrome c oxidase subunit
I (COI), Systematics, Central east Atlantic.
*Correspondence: E-mail: aescanez@msn.com
Supplementary
Material: Table S1
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