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. 

Planktotrophic Columbellidae (Gastropoda) in the northeast Atlantic and the Mediterranean Sea, with description of a new species in the genus Mitrella

2020 ◽  
Vol 96 (1) ◽  
pp. 145-168
Author(s):  
Serge Gofas ◽  
Ángel Luque ◽  
Javier Urra
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Larval Development ◽  
Alboran Sea ◽  
Eastern Atlantic Ocean ◽  
Ca 50 ◽  
The Mediterranean ◽  
First Time ◽  
A New Species ◽  
Alborán Sea

Few of the ca 50 species of Columbellidae found in the eastern Atlantic Ocean have planktotrophic larval development denoted by a multispiral protoconch. One species of the genus Mitrella, ranging from the mid-Atlantic seamounts to the Alboran Sea, is here described as new to science and the geographic and bathymetric distributions of another three species, Amphissa acutecostata (Philippi, 1844), Mitrella canariensis (d'Orbigny, 1840) and M. nitidulina (Locard, 1897) are updated. The name Mitrella canariensis is shown to have precedence over M. pallaryi (Dautzenberg, 1927). Mitrella nitidulina is absent in the Mediterranean Sea, and A. acutecostata, the only amphiatlantic species, is recorded for the first time as living in the Alboran Sea. There is a definite differentiation in the bathymetrical range of these species, with M. canariensis being the shallowest and M. nitidulina being the deepest.

scholarly journals Description of Chone usticensis sp. nov. (Polychaeta, Sabellidae) from the Mediterranean Sea

Zootaxa ◽  
2006 ◽  
Vol 1168 (1) ◽  
pp. 51 ◽  
Author(s):  
ADRIANA GIANGRANDE ◽  
MARGHERITA LICCIANO ◽  
LUCA CASTRIOTA
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Mediterranean Species ◽  
The Mediterranean ◽  
A New Species

A new species of Chone (Sabellidae) from the coast of Ustica Island (Mediterranean Sea, north of Sicily) is described. The species, named Chone usticensis sp. nov., is similar to another Mediterranean species, C. filicaudata, in having a long pygidial filiform appendage, but is distinct from this species especially in the peristomium, collar, and in thoracic paleate chaetae shape. A discussion on the presence of the radiolar appendages within the genus Chone is also given.

The genus Liljeborgia in the Mediterranean Sea, with the description of a new species (Crustacea: Amphipoda: Liljeborgiidae)

Zootaxa ◽  
2012 ◽  
Vol 3310 (1) ◽  
pp. 51 ◽  
Author(s):  
CÉDRIC D'UDEKEM D'ACOZ
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Identification Key ◽  
Adult Males ◽  
Outer Plate ◽  
Mandibular Palp ◽  
Amphipod Crustacean ◽  
Distal Spine ◽  
The Mediterranean ◽  
A New Species

A new amphipod crustacean, Liljeborgia clytaemnestra sp. nov., is described based on specimens from Malta andthe Bay of Naples. It is quite similar to the sympatric L. dellavallei Stebbing, 1906, but it has narrower and moreregular-sized spines on the propodus of pereiopods 3–4. The longest spine on the dorsolateral border of the pedun-cle of uropod 1 is not strongly elongate in adult males, as in L. dellavallei. The apical spines on the lobes of the tel-son are much longer than in L. dellavallei. L. clytaemnestra sp. nov. is actually more similar to two northeasternAtlantic species, the British L. pallida (Spence Bate, 1857) and the Scandinavian L. brevicornis (Bruzelius, 1859)than to the Mediterranean L. dellavallei. In L. clytaemnestra sp. nov., article 2 of the mandibular palp has setae ondistal third, whilst setae are restricted to tip in the two other species. Article 3 of the mandibular palp is also longerin L. clytaemnestra sp. nov. than in the two Atlantic species. The spines of the outer plate of the maxilliped are lon-ger in L. clytaemnestra sp. nov. than in the two other species. The most distal spine of the propodus of pereiopods3–4 is reduced in L. clytaemnestra sp. nov. and L. brevicornis, but not in L. pallida. The serration of the posteriorborder of the basis of pereiopod 7 is much stronger in L. clytaemnestra sp. nov. than in the two other species.Finally, in L. clytaemnestra sp. nov., the spines of the lobes of the telson are longer than in L. pallida. A lectotypeis designated for L. dellavallei. The presence/absence of a posterodorsal tooth on pleonite 3 in L. dellavallei is dis-cussed. The validity of L. kinahani (Spence Bate, 1862) is questioned. An identification key is proposed for Mediterranean Liljeborgia species.

A new species of Pygopus (Pygopodidae; Gekkota; Squamata) from north-eastern Queensland

Zootaxa ◽  
2010 ◽  
Vol 2578 (1) ◽  
pp. 47 ◽  
Author(s):  
PAUL M. OLIVER ◽  
PATRICK COUPER ◽  
ANDREW AMEY
Keyword(s):  
New Species ◽  
Morphological Diversity ◽  
Genetic Data ◽  
Lower Number ◽  
Evolutionary Divergence ◽  
Isolated Populations ◽  
South Eastern ◽  
North Eastern ◽  
A New Species ◽  
Geographically Isolated

Based on a combination of morphological and genetic data, geographically isolated populations of Pygopus from northeastern Queensland, formerly referred to Pygopus lepidopodus (Lacépède), are herein described as a new species. Pygopus robertsi sp. nov. can be diagnosed from its congeners by a suite of scalation characters, including fewer keeled dorsal scales, presence of a single continuous row of supracilaries and a lower number of midbody scale rows. It is also deeply divergent genetically from samples of Pygopus lepidopodus from southern Australia. The known distribution of Pygopus robertsi sp. nov. is similar to that of a number of taxa centred upon relatively dry ecotonal habitats at the western edge of the rainforest blocks of north-eastern Queensland. Additional samples and systematic work will be required to examine the evolutionary divergence of apparently isolated populations of the new species, and the significance of considerable genetic and morphological diversity within remaining populations of Pygopus lepidopodus from south-eastern and southern Australia.

scholarly journals Tethysbaena ledoyeri n. sp., a new thermosbaenacean species (Thermosbaenacea) from the Port-Miou karstic aquifer in southern France

Crustaceana ◽  
2020 ◽  
Vol 93 (7) ◽  
pp. 819-841
Author(s):  
H. P. Wagner ◽  
P. Chevaldonné
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Brackish Water ◽  
New Taxon ◽  
Karstic Aquifer ◽  
Southern France ◽  
The Mediterranean ◽  
A New Species

Abstract A new species of the thermosbaenacean genus Tethysbaena Wagner,1994 is described as T. ledoyeri n. sp. Together with an as yet undescribed amphipod (Niphargus sp.) it is an inhabitant of the brackish water of an aquifer that flows through the Basse-Provence Urgonian karstic system and reaches the Mediterranean Sea, 15 km east of Marseille, in the “Calanques” coast. The new taxon, being part of the T. argentarii-group, is compared with its closest allies in this group. Preliminary DNA data obtained from two specimens of the new species provide confirmation of its close ties to T. argentarii but also to T. scabra, the two geographically closest described species.

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.

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