Distribution of pelagic squids Abraliopsis Joubin, 1896 (Enoploteuthidae) and Pterygioteuthis P. Fischer, 1896 (Pyroteuthidae) (Cephalopoda, Decapodiformes, Oegopsida) in the Mexican Pacific

Abstract

The oegopsid squids Abraliopsis and Pterygioteuthis are abundant and diverse genera with taxonomic and distributional problems. Identification and distribution of species in the Mexican Pacific has been somewhat controversial. Here are provided a large series of new records for Abraliopsis affinis, Abraliopsis falco, Pterygioteuthis gemmata, Pterygioteuthis giardi and Pterygioteuthis hoylei from the Gulf of California and off the SW coast of Mexico. All five species were collected in the central or the southern Gulf of California, or in both. Abraliopsis affinis was found in seven samples with a total of 48 specimens, from 21°59' to 24°53'12"N. Abraliopsis falco was much less represented in the samples (14 specimens) but it was found in 10 localities, four of which correspond to the central-southern Gulf of California (north to 27°44'53"N) and six to SW Mexico (south to 16°49'18"N). In the case of Pterygioteuthis gemmata, only two records (three specimens) were obtained, both in the SW Gulf of California, while Pterygioteuthis giardi (nine specimens) records were all from the central Gulf of California (27°44'53” to 25°39'59"N). In the case of Pterygioteuthis hoylei (nine specimens), material was obtained in six localities, also in a restricted latitudinal range (24°23'48” to 25°56'56"N).

Gene Rearrangements in the Mitochondrial Genome of Gonatopsis borealis and Onychoteuthis compacta Reveal Their Phylogenetic Implications for Oegopsida

“…The Oegopsida is a very diverse and abundant group consisting of 24 families that lack corneas and have gladius (reduced internalized shells) (Hendrickx et al 2015). Species of the Oegopsida range in size from tens of meters in giant squid (Architeuthis dux) to less than 30 millimeters in the small re y squid (Pterygioteuthis microlampas) (Lindgren 2010).…”

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“…Estudios sobre calamares distribuidos en México resaltan la necesidad de determinar correctamente a los taxones (Granados-Amores et al, 2014;Díaz-Santana-Iturrios et al, 2019). Los pocos estudios taxonómicos que existen han sido enfocados a la familia Loliginidae (Alejo-Plata et al, 2001;Granados-Amores et al, 2014;Hendrickx et al, 2014;Díaz-Santana-Iturrios et al, 2019) y a las especies de aguas profundas (Hendrickx et al, 2015;Urbano & Hendrickx, 2018). Por tal motivo en este trabajo se presenta un catálogo de las especies de calamares depositados en la CPIME-ENCB, con el objetivo de contribuir a la taxonomía de este recurso pesquero.…”