The spread of the non-indigenous species Bregmaceros nectabanus Whitley, 1941 (Osteichthyes: Bregmacerotidae) in the eastern Mediterranean


Published: Mar 20, 2024
Keywords:
First record non-indigenous species Lessepsian migration stomach content Mediterranean Sea
FRANCESCA CAPEZZUTO
https://orcid.org/0000-0002-1498-0228
CRISTINA TURCO
https://orcid.org/0009-0002-6633-7426
GABRIELE GALASSO
https://orcid.org/0000-0001-6537-2751
LETIZIA SION
https://orcid.org/0000-0002-0308-1841
GIANFRANCO D’ONGHIA
https://orcid.org/0000-0003-0952-9472
Abstract

This study reports the first record and some features of two individuals of the Lessepsian migrant species smallscale codlet, Bregmaceros nectabanus, found in the stomachs of two individuals of European hake, Merluccius merluccius, sampled in the northern Ionian Sea (eastern Mediterranean) during the MEDITS International Bottom Trawl Survey. The two European hake were collected on muddy bottoms in September 2021 at 63 m depth (39.34950 ºN; 16.52350 ºE) and at 240 m depth (39.07156 ºN; 17.12626 ºE). Their morphological traits together with otolith and scale characteristics allowed the identification of the two specimens found in the stomachs as B. nectabanus. The analysis of the stomach contents for the larger individual is also reported. This finding underlines the utility of stomach content analysis as an indirect method to study the biodiversity of deep-sea ecosystems, including the spread of non-indigenous species as indicators of global warming.

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References
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