[MARMAM] New paper on common dolphins (Delphinus delphis) in the northern Adriatic Sea

Tilen Genov tilen.genov at gmail.com
Thu Aug 13 03:31:56 PDT 2020


Dear colleagues

On behalf of my co-authors, I would like to draw your attention to a new
paper on common dolphins (*Delphinus delphis*) in the northern Adriatic Sea:

Genov T, Kotnjek P, Centrih T. 2020. Occurrence of common dolphins (*Delphinus
delphis*) in the Gulf of Trieste and the northern Adriatic Sea.
Aquatic Conservation: Marine and Freshwater Ecosystems.
https://doi.org/10.1002/aqc.3407

The paper is Open Access and freely available at:
https://onlinelibrary.wiley.com/doi/full/10.1002/aqc.3407


Abstract


   1. The Mediterranean common dolphin (*Delphinus delphis * ), considered
   to have been very *common * in the past, had undergone a dramatic
   decline across most of the basin by the end of 1970s. In the northern
   Adriatic Sea, one of the regions with most available historical
   information, the common dolphin is thought to have been the most common and
   abundant cetacean throughout most of the 20th century. However, by the end
   of 1970s, it had virtually disappeared from the region and is now
   considered generally absent from the entire Adriatic Sea.
   2. This contribution summarizes the occurrence of common dolphins in the
   Gulf of Trieste and provides a brief review of published records in other
   parts of the Adriatic Sea.
   3. Systematic boat surveys in the wider area of the Gulf of Trieste
   between 2002 and 2019 confirmed that the common bottlenose dolphin
(*Tursiops
   truncatus * ) is the only regularly occurring cetacean species in this
   area. Despite this, several records of common dolphins were documented in
   the Gulf of Trieste between 2009 and 2012, through sightings of live
   animals or recovery of dead stranded animals.
   4. Dorsal fin markings allowed the photo‐identification of some of
   these, suggesting that at least four different live individuals (three
   adults and one calf) occurred here in recent times. Most cases involved
   single adult individuals, but one included a mother‐calf pair that was
   temporarily resident in a port for several months, a behaviour atypical for
   this species. Photo‐identification showed that the presumed mother had
   previously been sighted in the Ionian Sea in Greece, over 1,000 km from the
   Gulf of Trieste, making this the longest documented movement for this
   species worldwide.
   5. At present, the common dolphin continues to be rare in the region.


Please email me at tilen.genov at gmail.com if you have any difficulty
accessing the paper.


Best wishes,


Tilen


______________________________________________________________________
Tilen Genov

| Morigenos - Slovenian Marine Mammal Society |
| Sea Mammal Research Unit, University of St Andrews |
| IUCN Cetacean Specialist Group |
| twitter: @TilenGenov <https://twitter.com/TilenGenov> | @Morigenos_org
<https://twitter.com/Morigenos_org> | @_SMRU_ <https://twitter.com/_SMRU_>
| @IUCNCetaceanSG <https://twitter.com/IUCNCetaceanSG> |
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