Updated Checklist of Chondrichthyan Species in Croatia (Central Mediterranean Sea)

Author(s)
Pia Balaka, Pero Ugarković, Julia Türtscher, Jürgen Kriwet, Simone Niedermüller, Patrik Krstinić, Patrick Leopold Jambura
Abstract

Almost half of all chondrichthyan species in the Mediterranean Sea are threatened with extinction, according to the IUCN Red List. Due to a substantial lack of access to data on chondrichthyan catches in the Mediterranean Sea, especially of threatened species, the implementation of conservation measures is extremely insufficient. This also concerns the Adriatic Sea. Here we present a detailed and up-to-date assessment of the species occurring in Croatian waters, as the last checklist of chondrichthyans in Croatian waters was conducted in 2009. Occurrence records from historical data, literature and citizen science information have been compiled in order to present a comprehensive list of species occurrences. We found 54 chondrichthyan species between 1822 and 2022, consisting of a single chimaera, 23 rays and skates, and 30 shark species. Here, four additional species are listed but are considered doubtful. Five species are reported here for the first time for Croatian waters that were not listed in the survey from 2009. Nearly one-third of the species reported here are critically endangered in the entire Mediterranean Sea, based on the IUCN Red List. Additionally, we revisited the Croatian records of the sandtiger shark Carcharias taurus Rafinesque, 1810 and discussed its potential confusion with the smalltooth sandtiger shark Odontaspis ferox (Risso, 1810). Our results thus provide novel insights into the historical and current distribution patterns of chondrichthyan fishes in the Croatian Sea and provide a basis for further research as well as conservation measures.

Organisation(s)
Department of Palaeontology
External organisation(s)
World Wide Fund for Nature Adria, World Wide Fund for Nature Mediterranean Marine Initiative
Journal
Biology
Volume
12
Pages
1-33
No. of pages
33
ISSN
2079-7737
DOI
https://doi.org/10.3390/ biology12070952
Publication date
07-2023
Peer reviewed
Yes
Austrian Fields of Science 2012
105118 Palaeontology, 106003 Biodiversity research
Portal url
https://ucrisportal.univie.ac.at/en/publications/edc419b7-2a4d-45d3-aec1-a10798291ea6