Illustrated Key to Ampelisca Species from the North-Eastern Atlantic

1988 ◽  
Vol 68 (4) ◽  
pp. 659-676 ◽  
Author(s):  
Jean-Claude Dauvin ◽  
Denise Bellan-Santini
Keyword(s):  
New Species ◽  
Continental Shelf ◽  
Mediterranean Sea ◽  
Intertidal Zone ◽  
Atlantic Coast ◽  
The North ◽  
North Eastern ◽  
The Mediterranean

The genus Ampelisca comprises more than 150 species and is one of the more important benthic genus of marine amphipods. New species are regularly added (Barnard & Agard 1986; Bellan-Santini & Marques, 1986; Goeke, 1987). Ampelisca are found from the intertidal zone to abyssal depths but most of them live on the continental shelf. In spite of many studies, it is often difficult to distinguish some species which are morphologically similar. In the last ten years, twenty-two species have been described from the north-eastern Atlantic (BellanSantini & Kaïm-Malka, 1977; Bellan-Santini & Dauvin, 1981, 1986; Dauvin & Bellan-Santini, 1982, 1985; Bellan-Santini & Marques, 1986). Materials come from MNHN of Paris collection, collected by Chevreux (1894–1924) (Dauvin & Bellan-Santini, 1985, 1986) and specimens collected during the last 25 years. All these new species are described from the Atlantic coast from northern Brittany to the Sahara and from the Mediterranean Sea.

Verruca stroemia and Verruca spengleri (Crustacea: Cirripedia): distribution in the north-eastern Atlantic and the Mediterranean Sea

2003 ◽  
Vol 83 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Paulo S. Young ◽  
Helmut Zibrowius ◽  
Ghazi Bitar
Keyword(s):  
Mediterranean Sea ◽  
Black Sea ◽  
Geographic Distribution ◽  
Deep Water ◽  
Southern Spain ◽  
The Black Sea ◽  
The North ◽  
North Eastern ◽  
The Mediterranean ◽  
Gorringe Bank

The geographic distribution of Verruca stroemia and V. spengleri are reviewed. Verruca stroemia ranges from the White, Barents, Norwegian, and North Seas south to Portugal to the Algarve and to Gorringe Bank. All of the records of this species from the Mediterranean Sea are considered to be V. spengleri. Verruca spengleri occurs in the Azores and Madeira archipelagos, in southern Spain (Cádiz), throughout the Mediterranean Sea from Gibraltar to Lebanon, and in the Black Sea. But a distinct deep-water Verruca species seems to occur in the deep Mediterranean.

A revised definition of the genus Epileucon Jones (Crustacea, Cumacea) with descriptions of species from the deep Atlantic

1981 ◽  
Vol 291 (1052) ◽  
pp. 353-409 ◽  
Keyword(s):  
New Species ◽  
New Zealand ◽  
Continental Shelf ◽  
Mediterranean Sea ◽  
Geographical Distribution ◽  
Deep Water ◽  
Mediterranean Species ◽  
Males And Females ◽  
The Mediterranean ◽  
Definition Of

The genus Epileucon Jones, 1956 is redefined on the basis of carapace, pereon and appendage characters. The following species are transferred to Epileucon from the genus Leucon Kröyer, 1846: E. spiniventris (Hansen, 1920), E. longirostris (G. O. Sars, 1871), E. tenuirostris (G. O. Sars, 1887), E. latispina (Jones, 1963) and E. bengalensis (Lomakina, 1967). A lectotype is selected for E. spiniventris . Known Atlantic and Mediterranean species are redescribed, and five new species, E. ensis, E. pusillus, E. craterus, E. socius and E. acclivis , are described. Keys to males and females of the Atlantic and Mediterranean species are provided. The geographical distribution of the group is discussed. The genus is known in deep water (> 200 m) in the Atlantic, Pacific and Indian oceans and in the Mediterranean Sea, and also on the continental shelf (at around 100 m depth) off New Zealand.

scholarly journals Taxonomy and Ecology of Sympatric Ampelisca Species (Crustacea, Amphipoda) From the Strait of Gibraltar to the Strait of Dover, North-Eastern Atlantic

2021 ◽  
Vol 8 ◽  
Author(s):  
Jean-Claude Dauvin ◽  
Leandro Sampaio ◽  
Ana Maria Rodrigues ◽  
Victor Quintino
Keyword(s):  
Continental Shelf ◽  
Sea Water ◽  
Atlantic Coast ◽  
Coarse Sand ◽  
Strait Of Gibraltar ◽  
The North ◽  
Atlantic Province ◽  
Regional Area ◽  
North Eastern ◽  
Sand And Gravel

The Ampeliscidae Kröyer, 1842 is amongst the most diverse amphipod families; it comprises four genera, Ampelisca being the richest with more than 200 species. The Ampelisca genus presents high morphological homogeneity and the identification of the species by ecologists remains difficult. Ampelisca are also characterized by a high degree of sympatry, a rare situation in amphipods, and in this study we report up to nine species coexisting at the same site. Recent benthic sampling and publications, namely on the Portuguese continental shelf and the English Channel, permit to revisit the available data on the taxonomy and propose an updated species identification key, as well as the distribution and ecology of the 40-recorded Ampelisca species along the North Eastern Atlantic coast, from the Strait of Gibraltar, in the South, to the Strait of Dover, in the North. The data allow discussing on the sympatry and syntopy of such diverse amphipod family with the co-occurrence of several species at various scales of observations, from the wider regional area, to the narrower local habitat. Two Ampelisca species were recorded exclusively on hard bottom, while the other tend to inhabit specific types of soft bottom, ranging from deep mud to shallow coarse sand and gravel, with a preference for continental shelf muddy and sandy habitats. A future sea water temperature increase scenario could modify the species geographical distribution and reproductive cycle, in this temperate North-eastern Atlantic province.

Spiophanes adriaticus, a new species from the Mediterranean Sea

2019 ◽  
Vol 100 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Michela D'Alessandro ◽  
Luca Castriota ◽  
Teresa Maggio ◽  
Federica Nasi ◽  
Marilyn Carletti ◽  
...  
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Dna Sequences ◽  
Central Mediterranean ◽  
The North ◽  
Sublittoral Zone ◽  
New Finding ◽  
The Mediterranean ◽  
North Adriatic Sea ◽  
A New Species

AbstractMorphological and genetic investigations have led to the identification of Spiophanes adriaticus sp. nov. (Polychaeta: Spionidae) from the North Adriatic Sea (Central Mediterranean). A total of 81 specimens were recorded along the sublittoral zone between 8 and 27.5 m of depth. This species differs from other congeners by having: two pairs of black eyes, a cirriform occipital antenna, dorsal ciliated organs as thin bands usually extending to chaetigers 11–12, dorsal ciliated crests from chaetiger 14–17, undulate glandular opening on chaetigers 5–7, unhooded hooks from the 15th chaetiger and Y shaped tubes. A detailed description and illustrations are provided for the new species. Through DNA barcoding results and comparison of DNA sequences of the new species with those of other congeners available in the GenBank database, the validity of the new finding was confirmed. Spiophanes adriaticus sp. nov. represents the eighth species of Spiophanes recorded for the Mediterranean Sea. A key for the identification of Mediterranean Spiophanes species is also provided.

From Seismic Monitoring to Tsunami Warning in the Mediterranean Sea

2021 ◽  
Author(s):  
Alessandro Amato ◽  
Antonio Avallone ◽  
Roberto Basili ◽  
Fabrizio Bernardi ◽  
Beatriz Brizuela ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Lessons Learned ◽  
Tsunami Warning ◽  
Member States ◽  
The North ◽  
Last Mile ◽  
North Eastern ◽  
Tsunami Risk ◽  
The Mediterranean ◽  
Tsunami Warnings

Abstract The Italian Tsunami Alert Center based at the Istituto Nazionale di Geofisica e Vulcanologia (CAT-INGV) has been monitoring the Mediterranean seismicity in the past 8 yr to get fast and reliable information for seismically induced tsunami warnings. CAT-INGV is a tsunami service provider in charge of monitoring the seismicity of the Mediterranean Sea and of alerting Intergovernmental Oceanographic Commission (IOC)/UNESCO subscriber Member States and the Italian Department of Civil Protection of a potentially impending tsunami, in the framework of the Tsunami Warning and Mitigation System in the North-eastern Atlantic, the Mediterranean and connected seas (NEAMTWS). CAT-INGV started operating in 2013 and became operational in October 2016. Here, after describing the NEAMTWS in the framework of the global effort coordinated by IOC/UNESCO, we focus on the tsunami hazard in the Mediterranean Sea. We then describe CAT-INGV mandate, functioning, and operational procedures. Furthermore, the article discusses the lessons learned from past events occurring in the Mediterranean Sea, such as the Kos-Bodrum in 2017 (Mw 6.6) and the Samos-Izmir in 2020 (Mw 7.0) earthquakes, which generated moderately damaging tsunamis. Based on these lessons, we discuss some potential improvements for the CAT-INGV and the NEAMTWS, including better seismic and sea level instrumental coverage. We emphasize the need for tsunami risk awareness raising, better preparation, and full implementation of the tsunami warning “last-mile” to foster the creation of a more integrated, interoperable, and sustainable risk reduction framework. If we aim to be better prepared for the next tsunami, these important challenges should be prioritized in the agenda of the IOC/UNESCO Member States and the European Commission.

A new Mediterranean ‘lithistid’ sponge, Aciculites mediterranea sp. nov. (Porifera: Demospongiae) from a dark marine cave in Sardinia

2006 ◽  
Vol 86 (4) ◽  
pp. 691-698 ◽  
Author(s):  
Renata Manconi ◽  
Annalisa Serusi ◽  
Andrzej Pisera
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Growth Form ◽  
First Record ◽  
Shallow Marine ◽  
The North ◽  
The Mediterranean ◽  
North Western ◽  
Lithistid Sponge ◽  
Diagnostic Traits

A first record of the genus Aciculites in the Mediterranean Sea and the description of Aciculites mediterranea sp. nov. are here presented from a faunistic survey in a dark shallow marine cave of the north-western Sardinian karstic area. The new species is characterized by a massive cerebellum-like growth form, and a peculiar distribution of inhalant and exhalant areas, respectively, in depressed and elevated portions of the sponge surface. Oscules show a long narrow atrial cavity. Ectosomal skeleton is made of tangential anisostrongyles on elevated areas, and more or less vertical tufts of anisostrongyles in depressed inhalant areas. Anisostrongyles are smooth or with tips ornated by irregular tubercles. Sigmaspire microscleres are lacking. Choanosomal skeleton with tubercled irregular rizhoclone desmas and few scattered and variably oriented anisostrongyles. A comparative analysis of Aciculites mediterranea sp. nov. versus morphological diagnostic traits, geographical range and habitat of the species hitherto ascribed to Aciculites confirms that the peculiar distribution of the genus supports its relic condition of an ancient Tethyan fauna in the Mediterranean Sea.

scholarly journals Insights into the species diversity of the genus Sargassum (Phaeophyceae) in the Mediterranean Sea, with a focus on a pre-viously unnoticed taxon from Algeria

2018 ◽  
Vol 19 (1) ◽  
pp. 48 ◽  
Author(s):  
MOUNIA AOUISSI ◽  
LOUIZA NESRINE SELLAM ◽  
CHARLES F. BOUDOURESQUE ◽  
AURELIE BLANFUNÉ ◽  
FARID DERBAL ◽  
...  
Keyword(s):  
New Species ◽  
Species Diversity ◽  
Mediterranean Sea ◽  
Genetic Data ◽  
Conservative Approach ◽  
Alboran Sea ◽  
Strait Of Gibraltar ◽  
North Eastern ◽  
The Mediterranean ◽  
A New Species

Nine currently accepted species of the genus Sargassum (Phaeophyceae) have been recorded from the Mediterranean Sea: S. acinarium, S. desfontainesii, S. flavifolium, S. furcatum, S. hornschuchii, S. muticum, S. ramentaceum, S. trichocarpum and S. vulgare. Two of them, S. desfontainesii and S. furcatum, are Atlantic species, the Mediterranean range of which is restricted to the Alboran Sea, close to the Strait of Gibraltar. Three species, S. hornschuchii, S. ramentaceum and S. trichocarpum are endemic to the Mediterranean. The presence of S. flavifolium in the Mediterranean, a north-eastern Atlantic species, is at least in part based upon a misidentification and therefore requires confirmation. A taxon collected near Algiers and Annaba (Algeria), here referred to as ‘Sargassum sp. from Algeria’, although sharing most characters with S. flavifolium, also presents some distinctive characters. In the absence of genetic data, confirming or not its taxonomic value, and in the lack of studies on the herbaria containing the types of many species currently considered as synonyms of S. flavifolium, but which are possible candidates for accommodating the Algerian specimens, the authors prefer a conservative approach. They do not describe a new species, which would be premature, but draw attention to a taxon which may be more widely distributed in the Mediterranean rather than solely along the Algerian coasts. 

Levels of connectivity between longnose skate (Dipturus oxyrinchus) in the Mediterranean Sea and the north-eastern Atlantic Ocean

2010 ◽  
Vol 12 (2) ◽  
pp. 577-582 ◽  
Author(s):  
Andrew M. Griffiths ◽  
David W. Sims ◽  
Andrew Johnson ◽  
Arve Lynghammar ◽  
Matthew McHugh ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Mediterranean Sea ◽  
The North ◽  
Eastern Atlantic Ocean ◽  
North Eastern ◽  
The Mediterranean

scholarly journals Syllinae (Syllidae: polychaeta) from the Mediterranean coast of Egypt with the description of two new species

2011 ◽  
Vol 12 (1) ◽  
pp. 43 ◽  
Author(s):  
F.A. ABD-ELNABY ◽  
G.S. MARTIN
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Mediterranean Coast ◽  
Suez Canal ◽  
Western Coast ◽  
The North ◽  
Two New Species ◽  
The Mediterranean ◽  
North Western ◽  
Eleven Species

This is the second paper dealing with the Syllidae collected on soft and hard bottom from the north-western coast of Egypt (Mediterranean Sea) and southern part of the Suez Canal. Eleven species were reported, two of them seem to be new to science, (Syllis sp.1 and Syllissp.2), but need further examination. Six species namely Opisthosyllis brunnea, Syllis columbretensis, Syllis gerlachi, Syllis ergeni, Syllis pulvinata andTrypanosyllis coeliaca were recorded as new for Egyptian waters.

Actinothoe Sphyrodeta (Cnidaria, Actiniaria): The First Records from Portugal and the Mediterranean Sea

1997 ◽  
Vol 77 (1) ◽  
pp. 245-248 ◽  
Author(s):  
R.B. Williams
Keyword(s):  
Atlantic Ocean ◽  
Mediterranean Sea ◽  
Mediterranean Coast ◽  
Bay Of Biscay ◽  
Sea Anemones ◽  
Shetland Islands ◽  
The North ◽  
Eastern Atlantic Ocean ◽  
North Eastern ◽  
The Mediterranean

The known geographical distribution of the sea anemone Actinothoe sphyrodeta (Gosse) (Cnidaria, Actiniaria), hitherto generally believed to occur in the north-eastern Atlantic Ocean from the Shetland Islands to the Bay of Biscay, has been extended with new records from the Iberian Peninsula. These records comprise three from the west coast of Portugal and one from the Mediterranean coast of Spain.The sea anemones (Actiniaria) of the north-eastern Atlantic Ocean have been closely studied for at least a century and a half, and along with those of the Mediterranean Sea, constitute perhaps the best known actiniarian fauna in the world. Furthermore, there has long been discussion of the endemicity of Mediterranean sea anemones, and of apparent overlaps between the distributions of some Atlantic and Mediterranean species. It is, therefore, of particular interest when a species thought to have a solely Atlantic or solely Mediterranean distribution is discovered on the ‘wrong’ side of the Strait of Gibraltar. The anemone Actinothoe sphyrodeta (Gosse) was hitherto generally believed to occur only in north-western Europe, with a range from the Shetland Islands to the Bay of Biscay (e.g. Fischer, 1890; Manuel, 1981). It is reported here for the first time from Portugal and from the Mediterranean coast of Spain.

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