scholarly journals British sharks in Sicily: records of long distance migration of tope shark (Galeorhinus galeus) from North-eastern Atlantic to Mediterranean Sea.

2019 ◽  
Vol 20 (2) ◽  
pp. 309 ◽  
Author(s):  
FRANCESCO COLLOCA ◽  
DANILO SCANNELLA ◽  
MICHELE LUCA GERACI ◽  
FABIO FALSONE ◽  
GIUSTO BATISTA ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Ne Atlantic ◽  
East Atlantic ◽  
Central Mediterranean ◽  
Long Distance ◽  
Strait Of Sicily ◽  
North East ◽  
North Eastern ◽  
The Mediterranean ◽  
Galeorhinus Galeus

The study reports information about the recapture of two tagged adult females of tope shark, Galeorhinus galeus (Linnaeus 1758), in the central Mediterranean Sea (south coasts of Sicily) in 2014 and 2017. The two females were tagged in North-East Atlantic, respectively in Scotland in 2009 and Ireland in 2015. The Scottish specimen was a 175 cm female increasing of about 10 kg in body weight and 37 cm in total length during its 1967 days at liberty (5.39 years). The Irish one, was a pregnant female of an estimated age of 15-17 year which spent 248 days at liberty increasing 14 cm during this period. The growth rate of the two specimens was therefore between 6.8 and 7.8 cm year-1, faster than the annual increments of adults suggested in previous studies. Previous tope recapture records in the Mediterranean Sea were limited to the Alboran Sea, coast of Valencia and the Algerian coasts. The two tope females recaptured in the Strait of Sicily provided the first evidence of long distance entrance of NE Atlantic tope in the Mediterranean Sea. The well known occurrence of mature females and juveniles in this area of the Mediterranean suggest the hypothesis of a migration of adults female from their feeding grounds in north eastern Atlantic to lower latitudes up to the Mediterranean Sea for parturition.

scholarly journals Seamount physiography and biology in the north-east Atlantic and Mediterranean Sea

2013 ◽  
Vol 10 (5) ◽  
pp. 3039-3054 ◽  
Author(s):  
T. Morato ◽  
K. Ø. Kvile ◽  
G. H. Taranto ◽  
F. Tempera ◽  
B. E. Narayanaswamy ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Biological Diversity ◽  
Morphological Characteristics ◽  
East Atlantic ◽  
Late 19Th Century ◽  
North East ◽  
The North ◽  
The Mediterranean ◽  
Area North

Abstract. This work aims at characterising the seamount physiography and biology in the OSPAR Convention limits (north-east Atlantic Ocean) and Mediterranean Sea. We first inferred potential abundance, location and morphological characteristics of seamounts, and secondly, summarized the existing biological, geological and oceanographic in situ research, identifying examples of well-studied seamounts. Our study showed that the seamount population in the OSPAR area (north-east Atlantic) and in the Mediterranean Sea is large with around 557 and 101 seamount-like features, respectively. Similarly, seamounts occupy large areas of about 616 000 km2 in the OSPAR region and of about 89 500 km2 in the Mediterranean Sea. The presence of seamounts in the north-east Atlantic has been known since the late 19th century, but overall knowledge regarding seamount ecology and geology is still relatively poor. Only 37 seamounts in the OSPAR area (3.5% of all seamounts in the region), 22 in the Mediterranean Sea (9.2% of all seamounts in the region) and 25 in the north-east Atlantic south of the OSPAR area have in situ information. Seamounts mapped in both areas are in general very heterogeneous, showing diverse geophysical characteristics. These differences will likely affect the biological diversity and production of resident and associated organisms.

Electrophoretic identification of larvae and adults of Anisakis (Ascaridida:Anisakidae)

1986 ◽  
Vol 60 (4) ◽  
pp. 331-339 ◽  
Author(s):  
P. Orecchia ◽  
L. Paggi ◽  
S. Mattiucci ◽  
J. W. Smith ◽  
G. Nascetti ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Mediterranean Sea ◽  
Sibling Species ◽  
Type I ◽  
Type Ii ◽  
East Atlantic ◽  
North East ◽  
The Mediterranean ◽  
Multilocus Electrophoresis

ABSTRACTThe relationships between larvae and adults of Anisakis from the Mediterranean Sea and North-East Atlantic Ocean were analysed by multilocus electrophoresis. The correspondence of type I larvae with the A. simplex complex, including the sibling species A. simplex A and B, and of type II larvae with A. physeteris is confirmed. 19 of the 22 loci studied discriminated between the two larval types. Biochemical keys are given for the electrophoretic identification of A. simplex A, A. simplex B and A. physeteris, at both the larval and adult stages.

scholarly journals New records of two uncommon species, Calappa tuerkayana Pastore, 1995 (Decapoda, Calappidae) and Parasquilla ferrussaci (Roux, 1828) (Stomatopoda, Parasquillidae), from the Strait of Sicily (central Mediterranean Sea)

2020 ◽  
pp. 113-121
Author(s):  
G. Sardo ◽  
M. L. Geraci ◽  
D. Scannella ◽  
F. Falsone ◽  
S. Vitale
Keyword(s):  
Mediterranean Sea ◽  
New Records ◽  
Trawl Survey ◽  
Soft Bottom ◽  
Central Mediterranean ◽  
Crustacean Species ◽  
Mantis Shrimp ◽  
Strait Of Sicily ◽  
Central Mediterranean Sea ◽  
The Mediterranean

The shamefaced crab Calappa tuerkayana Pastore, 1995 and the mantis shrimp Parasquilla ferussaci (Roux, 1828) are two crustacean species rarely reported in the Mediterranean Sea. In December 2018, two specimens of C. tuerkayana and one specimen of P. ferussaci were collected on a soft bottom at about 132 and 145 m depth during a trawl survey off Mazara del Vallo harbour (Strait of Sicily). This note reports the northernmost record of C. tuerkayana in the Strait of Sicily and confirms the occurrence of P. ferussaci in the same area. An update of the spatial distribution of these crustacean species in the Mediterranean Sea is also presented.

Genetic differentiation in a pelagic crustacean ( Meganyctiphanes norvegica : Euphausiacea) from the North East Atlantic and the Mediterranean Sea

2000 ◽  
Vol 136 (2) ◽  
pp. 191-199 ◽  
Author(s):  
L. Zane ◽  
L. Ostellari ◽  
L. Maccatrozzo ◽  
L. Bargelloni ◽  
J. Cuzin-Roudy ◽  
...  
Keyword(s):  
Genetic Differentiation ◽  
Mediterranean Sea ◽  
East Atlantic ◽  
North East ◽  
The North ◽  
Meganyctiphanes Norvegica ◽  
The Mediterranean

scholarly journals Seamount physiography and biology in North-East Atlantic and Mediterranean Sea

2012 ◽  
Vol 9 (12) ◽  
pp. 18951-18992 ◽  
Author(s):  
T. Morato ◽  
K. Ø. Kvile ◽  
G. H. Taranto ◽  
F. Tempera ◽  
B. E. Narayanaswamy ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Biological Diversity ◽  
Morphological Characteristics ◽  
East Atlantic ◽  
Late 19Th Century ◽  
North East ◽  
The North ◽  
The Mediterranean ◽  
Area North

Abstract. This work aims at characterising the seamount physiography and biology in the OSPAR Convention limits (North-East Atlantic Ocean) and Mediterranean Sea. We first inferred potential abundance, location and morphological characteristics of seamounts, and secondly, summarized the existing biological, geological and oceanographic in-situ research, identifying examples of well-studied seamounts. Our study showed that the seamount population in the OSPAR area (North-East Atlantic) and in Mediterranean Sea is large with around 1061 and 202 seamount-like features, respectively. Similarly, seamounts occupy large areas of about 1 116 000 km2 in the OSPAR region and of about 184 000 km2 in the Mediterranean Sea, which is much larger than previously thought. The presence of seamounts in the North-East Atlantic has been known since the late 19th Century but overall knowledge regarding seamount ecology and geology is still relatively poor. Only 37 seamounts in the OSPAR area (3.5% of all seamounts in the region), 22 in the Mediterranean Sea (9.2% of all seamounts in the region) and 25 in the North-East Atlantic south of the OSPAR have in-situ information. Seamounts mapped in both areas are in general very heterogeneous, showing diverse geophysical characteristics. These differences will likely affect the biological diversity and production of resident and associated organisms.

On a saddled snake eel Pisodonophis semicinctus (Osteichthyes: Ophichthidae) trawled in the Strait of Sicily (Mediterranean Sea)

2000 ◽  
Vol 80 (5) ◽  
pp. 951-952 ◽  
Author(s):  
Sergio Ragonese ◽  
Giovan Battista Giusto
Keyword(s):  
Body Weight ◽  
Mediterranean Sea ◽  
Bottom Trawl ◽  
Northern Coast ◽  
Rare Finding ◽  
Strait Of Sicily ◽  
Total Length ◽  
The Mediterranean

The occurrence in the Strait of Sicily of the saddled snake eel, Pisodonophis semicinctus (Osteichthyes: Ophichthidae), a rare finding for the Mediterranean Sea, is confirmed on the basis of one specimen caught off the northern coast of Tunisia in 1991. The specimen, 800 mm in total length and 457 g in body weight (preserved condition), was captured during a commercial bottom trawl hauled at 30 m next to Cape Bon (north of Tunisia). This represents the second and fourth documented record of this Atlantic intruder within the Strait of Sicily and the Mediterranean Sea, respectively.

scholarly journals Links of the significant wave height distribution in the Mediterranean sea with the Northern Hemisphere teleconnection patterns

2008 ◽  
Vol 17 ◽  
pp. 13-18 ◽  
Author(s):  
P. Lionello ◽  
M. B. Galati
Keyword(s):  
Mediterranean Sea ◽  
Northern Hemisphere ◽  
Wave Height ◽  
Significant Wave Height ◽  
Height Distribution ◽  
East Atlantic ◽  
Significant Wave ◽  
Teleconnection Patterns ◽  
Wave Height Distribution ◽  
The Mediterranean

Abstract. This study analyzes the link between the SWH (Significant Wave Height) distribution in the Mediterranean Sea during the second half of the 20th century and the Northern Hemisphere SLP (Sea Level Pressure) teleconnection patterns. The SWH distribution is computed using the WAM (WAve Model) forced by the surface wind fields provided by the ERA-40 reanalysis for the period 1958–2001. The time series of mid-latitude teleconnection patterns are downloaded from the NOAA web site. This study shows that several mid-latitude patterns are linked to the SWH field in the Mediterranean, especially in its western part during the cold season: East Atlantic Pattern (EA), Scandinavian Pattern (SCA), North Atlantic Oscillation (NAO), East Atlantic/West Russia Pattern (EA/WR) and East Pacific/ North Pacific Pattern (EP/NP). Though the East Atlantic pattern exerts the largest influence, it is not sufficient to characterize the dominant variability. NAO, though relevant, has an effect smaller than EA and comparable to other patterns. Some link results from possibly spurious structures. Patterns which have a very different global structure are associated to similar spatial features of the wave variability in the Mediterranean Sea. These two problems are, admittedly, shortcomings of this analysis, which shows the complexity of the response of the Mediterranean SWH to global scale SLP teleconnection patterns.

scholarly journals New insights in the biogeographical distributions of two Spionidae (Annelida) from the NE Atlantic and Mediterranean French coasts

Zoosymposia ◽  
2020 ◽  
Vol 19 (1) ◽  
pp. 173-184
Author(s):  
JÉRÔME JOURDE ◽  
NICOLAS LAVESQUE ◽  
CÉLINE LABRUNE ◽  
JEAN-MICHEL AMOUROUX ◽  
PAULO BONIFÁCIO ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Morphological Characters ◽  
Bay Of Biscay ◽  
Ne Atlantic ◽  
Marine Waters ◽  
Gulf Of Lion ◽  
The Mediterranean ◽  
Brown Pigmentation

We report the first occurrences of Spiophanes afer Meißner, 2005 and Prionospio cristaventralis Delgado-Blas, Díaz-Díaz & Viéitez, 2018 from French marine waters (from the southern part of the Bay of Biscay in NE Atlantic, and the Gulf of Lion in the Mediterranean Sea). Morphological characters of S. afer include the presence of an occipital antenna, dorsal ciliated organs extending to chaetigers 13–15, neuropodial hooks from chaetiger 15, ventrolateral intersegmental pouches from chaetigers 14–15, chaetal spreaders of “2+3 type”, and conspicuous dark brown pigmentation on parapodia of chaetigers 9–13. Prionospio cristaventralis has four pairs of branchiae (1st and 4th pinnate, 2nd and 3rd apinnate), ventral crests from chaetigers 11–12, high dorsal crests on chaetigers 10–11, and very large notopodial prechaetal lamellae on anterior chaetigers. Both records represent northern extensions of their known distributions. However, the presence of S. afer on French coasts may have been overlooked for several decades. The validity of the recently proposed Spiophanes adriaticus is questioned.

The Comparative Feeding Ecology of Six Species of Shark and Four Species of Ray (Elasmobranchii) In The North-East Atlantic

1996 ◽  
Vol 76 (1) ◽  
pp. 89-106 ◽  
Author(s):  
J.R. Ellis ◽  
M.G. Pawson ◽  
S.E. Shackley
Keyword(s):  
Feeding Ecology ◽  
Stomach Contents ◽  
Generalist Predators ◽  
Dietary Overlap ◽  
East Atlantic ◽  
Dietary Breadth ◽  
North East ◽  
The North ◽  
North Eastern ◽  
Commercial Species

The stomach contents of ten species of elasmobranch from the north-eastern Atlantic indicate that most are generalist predators, eating a variety of polychaetes, molluscs, crustaceans and teleosts. Two species, Mustelus asterias and Squatina scjuatina were found to be specialist feeders, consuming portunid crabs and pleuronectids, respectively. Measures for both dietary breadth and dietary overlap are given and the implications of elasmobranch predation on the prey communities and on commercial species are discussed.

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