1,720,976 research outputs found
Comparision beteween two populations of bleak Alburnus alburnus (L.) (Osteicthyes, Cyprinidae) of the Friulan low plain (North-eastern Italy) and of the Danube basin (North-Eastern Croatia) on morphological and genetical basis.
No full textFeeding ecology of the transparent goby Aphia minuta (Pisces, Gobiidae) in the northwestern Adriatic Sea.
No full textFirst estimating of energy density of Engraulis encrasicolus (Linneus, 1758) in the Adriatic Sea (northeastern Mediterranean).
No full textComparison between two populations of bleak Alburnus alburnus (L.) (Osteichthyes, Cyprinidae) of the Friulan low plain (north-eastern Italy) and of the Danube basin (north-eastern Croatia) on morphological and genetical basis
No full textPreliminary results on the energy density of Sardina pilchardus in the Gulf of Trieste (Northern Adriatic)
No full textSardina pilchardus (Walbaum, 1792) were monthly sampled during May-October 2006 in the Gulf of Trieste (Northern Adriatic Sea) in order to estimate their energy density (ED ). A highly significant relationship between per cent dry weight (x) and ED (y)(J g-1 wet weight) was found: y=375.2x-4189.9 (n= 50 r2=0.97 p<0.001)
Energy density of anchovy, Engraulis encrasicolus (L.) in the Adriatic Sea (Northeastern Mediterranean)
No full textEuropean anchovy Engraulis encrasicolus, with total lengths ranging from 400 to 1325 mm,
were sampled during October 2002 and May 2003 in the northern Adriatic Sea in order to
estimate their energy densities (ED). A highly significant (P < 0001) relationship between ED
(y) (J g1wet mass) and per cent dry mass (x) was found: y 1⁄4 321x 33169 (n 1⁄4 161,
r2 1⁄4 082)
Diet of Engraulis encrasicolus (L.) in the northern Adriatic Sea (Mediterranean): ontogenetic changes and feeding selectivity.
No full textOsservazioni sui contenuti stomacali di Engraulis encrasicolus e Sardina pilchardus, catturati con lampara nel Golfo di Trieste.
No full textAssessing the impact of the invasive ctenophore Mnemiopsis leidyi on artisanal fisheries in the Venice Lagoon: an interdisciplinary approach
Full text linkThe sea walnut, Mnemiopsis leidyi, has invaded and expanded throughout the whole Mediterranean Sea basin. Large blooms were recorded also in the Venice Lagoon (Italy), an ecosystem rich with biodiversity which supports multiple services, including artisanal fishery production. To investigate M. leidyi impacts on lagoon artisanal fisheries, we combined fishers' local ecological knowledge, fishery landing time series analysis, and field sampling. Firstly, we interviewed artisanal fishers to date the blooms of M. leidyi. Secondly, we analyzed long-term fishery landings records to detect whether changes in landings quantity and composition were related to the ctenophore invasion. Thirdly, we sampled catches of the lagoon fyke nets. This interdisciplinary approach overcame the weaknesses of single methodologies and allowed us to reconstruct the temporal phases of M. leidyi invasion in the Venice Lagoon. Moreover, our results indicate that the lagoon landings significantly declined with the blooms, paralleled by the increase of water temperature. Finally, we showed that the mechanical obstruction of the nets, caused by the massive ctenophore blooms, strongly impacts fishing activities. Our results are a first step in assessing the short and long-term impacts of this invasive species on lagoon ecosystems, including its socioeconomic consequences, whose better understanding is fundamental to inform mitigation and adaptation measures
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