Bottlenose dolphins in the north‐western Adriatic Sea: Abundance and management implications

Baited lander represents a low impact technique, an alternative to the traditional trawl sampling for collecting data on fish diversity and abundance, especially for threatened species such as Chondrichthyes living in sensitive habitats. In this study, distribution and abundance of cartilaginous fish were compared between two geographic areas, the southern Adriatic Sea and the north-western Ionian Sea, with two low impact sampling gears, an experimental bottom longline and a baited lander. Species diversity was evaluated by applying ecological indices and difference in mean abundances were tested using multivariate analysis. A total of 13 species of cartilaginous fish were collected. Significant differences in the assemblage recorded in the same area using different sampling tools were detected and no significant differences were detected among different areas explored with the same method. Using longline, the most abundant species collected in both areas was Galeus melastomus, while using lander, the most observed species were Dalatias licha in the southern Adriatic Sea and Hexanchus griseus in the north-western Ionian Sea. According to IUCN classification, of the 13 species collected, 2 are near threatened and 5 are threatened. A better governance of sensitive habitats coinciding with the essential fish habitat for these species would ensure them a better conservation status.

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Corrigendum to “The first assessment of marine debris in a Site of Community Importance in the north-western Adriatic Sea (Mediterranean Sea)” [Mar. Pollut. Bull. 114 (2017) 821–830]

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2020.110960 ◽

2020 ◽

Vol 153 ◽

pp. 110960

Author(s):

Valentina Melli ◽

Michela Angiolillo ◽

Francesca Ronchi ◽

Simonepietro Canese ◽

Otello Giovanardi ◽

...

Keyword(s):

Mediterranean Sea ◽

Adriatic Sea ◽

Marine Debris ◽

The North ◽

A Site ◽

North Western

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Organic enrichment and structure of the macrozoobenthic community in the northern Adriatic Sea in an area facing Adige and Po mouths

ICES Journal of Marine Science ◽

10.1016/j.icesjms.2004.06.018 ◽

2004 ◽

Vol 61 (6) ◽

pp. 871-881 ◽

Cited By ~ 23

Author(s):

R. Simonini ◽

I. Ansaloni ◽

A.M. Bonvicini Pagliai ◽

D. Prevedelli

Keyword(s):

Species Richness ◽

Adriatic Sea ◽

Coastal Areas ◽

Organic Enrichment ◽

Northern Adriatic ◽

Opportunistic Species ◽

Species Richness And Diversity ◽

The North ◽

North Western ◽

Macrozoobenthic Community

Abstract The structure of the macrozoobenthic community and the vertical distribution of organisms in the sediment were studied in order to assess the effects of river outflows and organic enrichment on the benthic community of the North Adriatic Sea. Sampling was carried out at one offshore sandy station (S3) and at two coastal muddy stations (S1 and S2), near to river Po and Adige deltas. Samples were collected in four surveys covering one year from April 1995 to January 1996. In all surveys, the offshore sandy station showed a complex trophic structure, high species richness and diversity, with the occurrence of tubicolous or burrowing polychaetes like Nothria conchylega, Aponuphis bilineata, Maldane sarsi, Nematonereis unicornis and Eunice vittata, which also colonized the deeper sediment layers. On the other hand, the coastal muddy stations both exhibited similar species composition and a great abundance of dominant, opportunistic species such as the bivalve Corbula gibba, typical of unstable sea bottoms with a high rate of sedimentation, and some polychaetes typical of sublittoral muddy bottoms such as Levinsenia gracilis, Aricidea claudiae, Prionospio malmgreni, Sternaspis scutata and P. cirrifera. The high density of a few opportunistic species (mainly surface-deposit feeders) and the scant penetration of organisms within sediments that characterized the stations S1 and S2 support other evidence of the eutrophication of the coastal areas of the north-western Adriatic Sea. However, the high biomass values, the species richness and diversity observed in S1 and S2 suggest the occurrence of less extreme conditions than at other highly-eutrophicated coastal areas. River outflows, eutrophication and, especially, the increasing frequency of acute dystrophic events may be recognized as the driving forces determining the structure and composition of the macrozoobenthic community at coastal areas of north-western Adriatic Sea.

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Preliminary study on the antimicrobial susceptibility pattern related to the genotype of Vibrio vulnificus strains isolated in the north-western Adriatic Sea coastal area

Italian Journal of Food Safety ◽

10.4081/ijfs.2017.6843 ◽

2017 ◽

Vol 6 (4) ◽

Cited By ~ 1

Author(s):

Patrizia Serratore ◽

Emanuele Zavatta ◽

Eleonora Fiocchi ◽

Emanuele Serafini ◽

Andrea Serraino ◽

...

Keyword(s):

16S Rrna ◽

Antimicrobial Susceptibility ◽

Coastal Area ◽

Adriatic Sea ◽

Vibrio Vulnificus ◽

Clinical Laboratory ◽

Diffusion Method ◽

Antimicrobial Susceptibility Pattern ◽

The North ◽

North Western

V. vulnificus is a Gram-negative bacterium, commonly found in estuarine and coastal habitats, that can infect humans through seafood consumption or wound exposure. This study represents the first attempt to correlate the genotype of Vibrio vulnificus strains isolated in the north-western Adriatic Sea coastal area, with their antimicrobial susceptibility patterns. On the whole, 40 V. vulnificus strains, isolated from shellfish (n=20), different coastal water bodies (n=19), and the blood of a Carretta carretta turtle (n=1), were utilized. All strains were positive for the species-specific genes vvhA and hsp, with high variability for other markers: 55% (22 out of 40) resulted of the environmental (E) genotype (vcgE, 16S rRNA type A, CPS2 or CPS0), 10% (4 out of 40) of the clinical (C) genotype (vcgC, 16S rRNA type B, CPS1), and 35% (14 out of 40) of the mixed (M) genotype, possessing both E and C markers. The antimicrobial susceptibility was assayed by the diffusion method on agar, according to the Clinical Laboratory Standards Institute (CLSI), utilizing the following commercial disks (Oxoid): ampicillin (AMP), ampicillin- sulbactam (SAM), piperacillin (PRL), cefazolin (KZ), cefotaxime(CTX), ceftazidime( CAZ), imipenem (IPM), meropenem (MEM), amikacin (AK), gentamicin(CN), tetracycline(TE), ciprofloxacin (CIP), levofloxacin (LEV), trimethoprim-sulfamethoxazole (SXT), and chloramphenicol (C). 75% of the strains, (n=30) including all C strains, was sensitive to all the tested antibiotics, whereas E strains showed intermediate sensitivity to AK (2 strains), CIP and CAZ (1 strain), TE (1 strain) and resistance to KZ (1 strain), and 4 M strains showed I to AK.

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Monitoring of infections by Protozoa of the genera Nematopsis, Perkinsus and Porospora in the smooth venus clam Callista chione from the North-Western Adriatic Sea (Italy)

Diseases of Aquatic Organisms ◽

10.3354/dao042157 ◽

2000 ◽

Vol 42 ◽

pp. 157-161 ◽

Cited By ~ 15

Author(s):

G Canestri-Trotti ◽

EM Baccarani ◽

F Paesanti ◽

E Turolla

Keyword(s):

Adriatic Sea ◽

The North ◽

Callista Chione ◽

North Western

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Tropical inshore dolphins of north-western Australia: Unknown populations in a rapidly changing region.

Pacific Conservation Biology ◽

10.1071/pc120056 ◽

2012 ◽

Vol 18 (1) ◽

pp. 56 ◽

Cited By ~ 29

Author(s):

Simon J Allen ◽

Daniele D Cagnazzi ◽

Amanda J Hodgson ◽

Neil R Loneragan ◽

Lars Bejder

Keyword(s):

Western Australia ◽

Ad Hoc ◽

Bottlenose Dolphins ◽

Urban Centre ◽

The North ◽

Dolphin Population ◽

Population Sizes ◽

Commonwealth Government ◽

Western Australian ◽

North Western

Australian Snubfin Orcaella heinsohni, Indo-Pacific Humpback Sousa chinensis and Indo-Pacific Bottlenose Dolphins Tursiops aduncus inhabit Australia’s tropical north-western coastline, a region undergoing extensive port development associated with the massive expansion of the oil, gas and mining industries. The current lack of data on dolphin population sizes or trends precludes impact assessments of developments on these protected species. Furthermore, the Western Australian and Commonwealth Government conservation listings of tropical inshore dolphins do not reflect their international listings. From April to July, 2010, we conducted ad hoc boat-based surveys (n=55) of inshore delphinids at seven sites across north-western Australia from Coral Bay in the south (23.1°S: 113.8°E) to Cable Beach in the north (17.9°S: 122.2°E). We documented the locations of these three species from which we obtained photoidentification and biopsy data, as well as reports of Australian Snubfin Dolphin sightings from researchers and community groups. The data from this limited field effort confirm that Indo-Pacific Humpback and Indo-Pacific Bottlenose Dolphins occur in the waters adjacent to each north-western Australian urban centre and show that the range of the Australian Snubfin Dolphin extends considerably further south-west than previously reported. Given the scale of coastal developments and the vulnerability of isolated cetacean populations to fragmentation or extirpation, assessments of the viability of dolphin populations are required. Our data suggest that the Australian Snubfin, Indo-Pacific Humpback and Indo-Pacific Bottlenose Dolphins need to be considered as likely to be impacted by coastal developments across north-western Australia.

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First Record of the Cornich Blackfish Schedophilus Medusophagus (Pisces: Centrolophidae) Larvae from the Adriatic Sea

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s002531540004501x ◽

1998 ◽

Vol 78 (3) ◽

pp. 1035-1038 ◽

Cited By ~ 4

Author(s):

Jakov Dulčić

Keyword(s):

Adriatic Sea ◽

First Record ◽

Western Mediterranean ◽

Western Atlantic ◽

The North ◽

Pelagia Noctiluca ◽

North Eastern ◽

The Town ◽

North Western ◽

Mesopelagic Species

The capture of the cornich blackfish, Schedophilus medusophagus, larvae from the Adriatic Sea represents an easterly extension in range of this species, and the first larval record in Adriatic waters.Schedophilus medusophagus Cocco, 1839, is a mesopelagic species from temperate waters of the north-eastern and north-western Atlantic and the western Mediterranean (Bini, 1968; Tortonese, 1975; Haedrich, 1986). The first record of this fish from the Adriatic Sea was reported in 1880 according to Ninni (1912). The second record was during the invasion of medusae Pelagia noctiluca (Malej, 1982; Rottini-Sandrini & Stravisi, 1982; Vučetić, 1982,1983) in Pelješac channel near the town of Korčula-island Koršula (central Adriatic) in 1982 (Onofri, 1986). Ten juvenile specimens, from 10·0 to 20·0cm total length (TL), were collected with medusae at 2m depth. This record Onofri (1986) connected with the ingression of inter-median waters (50–100 m) in the central Adriatic influenced the increase of salinity and temperature in 1982. Jardas (1996) noted that S. medusophagus is a very rare species in the Adriatic Sea.

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