Feeding habits of the pelagic stingray Pteroplatytrygon violacea (Chondrichthyes: Dasyatidae) in the Adriatic Sea

2012 ◽  
Vol 93 (2) ◽  
pp. 285-290 ◽  
Author(s):  
L. Lipej ◽  
B. Mavrič ◽  
D. Paliska ◽  
C. Capapé
Keyword(s):  
Adriatic Sea ◽  
Prey Size ◽  
Feeding Habits ◽  
Pelagic Fish ◽  
Top Predator ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
The One ◽  
Taxonomic Groups ◽  
Main Food Item

The feeding habits of the pelagic stingray (Pteroplatytrygon violacea) were studied using 84 stomachs of specimens caught in the northern Adriatic Sea in the period from April 2004 to October 2005. Percentage of empty stomachs found was overall very low, being a bit bigger in smaller specimens. The diet consisted of two main taxonomic groups such as teleost fish and cephalopods, but few specimens of crustaceans were recorded as well. The main food item was represented by anchovy, while cuttlefish and red band fish represented the alternative preys. Prey size was positively correlated with the size of predator. The proportion of anchovies in the diet grew with size of predator, while the one for red band fish decreased. The stingray was confirmed to be a top predator of pelagic fish species, although the presence of benthic prey shows that it feeds also at the bottom.

scholarly journals Seawater Icicles of the Adriatic Sea

2019 ◽  
Vol 100 (6) ◽  
pp. 987-994
Author(s):  
Vlado Malačič ◽  
Nedjeljka Žagar
Keyword(s):  
Adriatic Sea ◽  
Necessary Condition ◽  
Polar Regions ◽  
Coastal Zones ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Air Temperatures ◽  
The Mediterranean ◽  
Bora Wind ◽  
The One

AbstractThe marine icicles that form on coastal constructions (e.g., piers and railings) are very common in polar and subpolar areas. The occasional formation of icicles in the coastal zones of the Mediterranean Sea occurs in relation to cold-air outbreaks from the polar region, such as the one presented in this paper in February 2018. The air temperatures over the northern Adriatic Sea, the northernmost part of the Mediterranean, dropped below –2.1°C, a necessary condition for seawater to freeze, with salinity between 38.0 and 38.5 PSU. The formation of icicles on the coastal structures was further enabled by the bora wind and related high seas along the coast. Measurements presented in this paper confirm that the icicles in the Bay of Piran in the Gulf of Trieste (45.55°N) were formed from the seawater. The measured salinity level of the melted icicles, around 9 PSU, is a typical value reported for marine icicles in polar regions.

Benthic fluxes of oxygen, carbon and nutrients in the Marano and Grado Lagoon (northern Adriatic Sea, Italy)

2012 ◽  
Vol 113 ◽  
pp. 57-70 ◽  
Author(s):  
C. De Vittor ◽  
J. Faganeli ◽  
A. Emili ◽  
S. Covelli ◽  
S. Predonzani ◽  
...  
Keyword(s):  
Adriatic Sea ◽  
Benthic Fluxes ◽  
Northern Adriatic Sea ◽  
Northern Adriatic

Optical data collection and bio-optical modeling in Northern Adriatic Sea

1999 ◽  
Author(s):  
Luigi Alberotanza ◽  
G. Ferro Milone ◽  
Giuliana Profeti ◽  
C. Ramasco
Keyword(s):  
Data Collection ◽  
Adriatic Sea ◽  
Optical Data ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Optical Modeling
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