Naslov
Rare and little-known fishes in the eastern Adriatic during last two decades

Autori
Dulčić, Jakov ; Lipej, Lovrenc

Izvornik
Periodicum biologorum (0031-5362) 104 (2002), 2; 185-194

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Adriatic Sea; rare and little known fishes; climate change; ichthyofauna

Sažetak
Backgrounds and Purpose: Studies of the ichthyological fauna from the Adriatic waters began in 18(th) century. Many other authors making lists of the Adriatic fish species during 19 and 20(th) century and some of them with special emphasis on the occurences of rare species in the Adriatic Sea. The goal of this paper is to check the status of some fish species, which were considered to be rare in anyway in the Adriatic Sea, according to new records in last two decades. In addition, we have listed what seem to be exceptional occurrences to the north or south of species which are relatively common elsewhere with the intention of documenting and potential alteration in the distribution of fish fauna to climatic changes. Material and Methods: Records of specimens submitted are followed by initials indicating the source, a full list of collaborators is given at the end of the list of records. Records from published sources are acknowledged in the usual way except that newspaper reports are cited in the text by the following abbreviations and the date of the issue cited, Records are given in a sequence of year, month, and day (when known), and locality with position and depth. This is followed by the number of specimens if more than one, total length and weight, and the source of the record. Whenever one or more item is lacking it is because data not available to the authors. Results: Records of occurrence of rare and little-known fishes in the Eastern Adriatic for the years from 1980 to 2001 are given. The significance of these records is discussed briefly in some cases, According to our investigations, most of the species declared seems to be more common that used to be in the past (for example, Balistes carolinensis, Thalassoma pavo, Cetorhinus maximus, Sparisoma cretense, Coryphaena hippurus) so we could treated them as relatively rare or common fish species, The fact is that the number of alien fish species immigrant in the Adriatic Sea is rapidly increasing in the last years. The alien fishes records analysis is showing a tropical affinity species immigration. Conclusion: During the last 20 years, changes in the quantitative and qualitative composition of the Adriatic ichthyofauna have been noted. The numbers of thermophillic species have increased and several species, previously scarce or rare, have become more abundant, while others are new records. These observations can be related to oceanographic changes in the Adriatic Sea.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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