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 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. 

Redescription of the zooxanthellate Eudendrium moulouyensis (Eudendriidae: Hydrozoa) from the Mediterranean Sea

2008 ◽  
Vol 88 (8) ◽  
pp. 1655-1662 ◽  
Author(s):  
D. De Vito ◽  
F. Boero ◽  
C.G. Di Camillo ◽  
C. Megina ◽  
S. Piraino
Keyword(s):  
Life Cycle ◽  
Mediterranean Sea ◽  
Original Description ◽  
Western Mediterranean ◽  
Alboran Sea ◽  
Northern Adriatic ◽  
Full Life Cycle ◽  
The Mediterranean ◽  
First Time ◽  
Alborán Sea

Eudendrium moulouyensis is a zooxanthellate hydroid originally described from the Chafarinas Islands (Alboran Sea, south-western Mediterranean) in summer 1991. According to the original description, this species can be identified due to the occurrence of symbiotic zooxanthellae in the entire endodermal layer of the colony (gastrodermis and tentacle endodermis), a unique feature among the Mediterranean Eudendrium species. However, several aspects of its life cycle and the extent of its phenotypical variability are still unknown. Since winter 2004, colonies of E. moulouyensis were recorded throughout the year from 0.5 m to 30 m depth from the southern Adriatic Sea (Otranto Channel) and the Gibraltar Strait (Alboran Sea). Additional specimens were collected from the northern Adriatic (Vis, Croatia), Sicily Channel (Pantelleria and Lampedusa Islands), and western Sardinia (Costa Paradiso). These findings offered the opportunity to describe for the first time the full life cycle and to elucidate several biological aspects related to phenotypical variation of colony morphology, vertical zonation, seasonality, zooxanthellae–polyp relationship, and cnidome morphology and distribution. The number and morphology of male gonophores per reproductive polyp is described here for the first time, providing a useful taxonomic character to easily discriminate Myrionema amboinense from E. moulouyensis. From the available information, the occurrence of M. amboinense in the Mediterranean Sea should be regarded as doubtful, if they are not accompanied by observations of cnidome, male gonophores or distinctly separate tentacles whorls.

scholarly journals Description of a new species of Sphaerosyllis Claparède, 1863 (Polychaeta: Syllidae: Exogoninae) from the Alicante coast (W Mediterranean) and first reports of two other species of Syllidae for the Mediterranean Sea and the Iberian Peninsula

2012 ◽  
Vol 13 (2) ◽  
pp. 187 ◽  
Author(s):  
Y. DEL-PILAR-RUSO ◽  
G. SAN MARTIN
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
Mediterranean Sea ◽  
Species Level ◽  
Undescribed Species ◽  
Soft Bottom ◽  
Eastern Atlantic Ocean ◽  
The Mediterranean ◽  
San Martín ◽  
A New Species

During a study aiming at the evaluation of the distribution of the soft-bottom community at different taxonomic scales, thefamily Syllidae was analysed to the species level. Among the identified material, one undescribed species belonging to the genus Sphaerosyllis Claparède, 1863 was found and two species constitute new reports for the Mediterranean Sea and for the Iberian Peninsula: Parapionosyllis cf. macaronesiensis Brito, Núñez and San Martín, 2000, and Syllis cf. mauretanica (Licher, 1999) n. comb., both only previously known from the subtropical Eastern Atlantic Ocean. The new species of Sphaerosyllis is mainly distinguished in having bulbous, small antennae, tentacular and dorsal cirri, small parapodial glands, with granular material, and compound chaetae with short blades. In this paper, we describe the new species and the specimens of the new reports.

First record of Sphoeroides spengleri (Osteichthyes: Tetraodontidae) in the Mediterranean Sea

2004 ◽  
Vol 84 (5) ◽  
pp. 1089-1090 ◽  
Author(s):  
J.A. Reina-Hervás ◽  
J.E. García Raso ◽  
M.E. Manjón-Cabeza
Keyword(s):  
Alien Species ◽  
Mediterranean Sea ◽  
First Record ◽  
Western Mediterranean ◽  
Alboran Sea ◽  
Total Length ◽  
The Mediterranean ◽  
Alborán Sea

The capture of a specimen of Sphoeroides spengleri (Osteichthyes: Tetraodontidae), 17 December 2000 and 29·7 mm total length, from the Málaga coast (Alborán Sea, western Mediterranean) represents the first record of a new alien species for Mediterranean waters.

scholarly journals Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) of the Mediterranean and Black Sea Fishes

2011 ◽  
Vol 45 (6) ◽  
pp. e-48-e-52
Author(s):  
V. Yurakhno
Keyword(s):  
New Species ◽  
Black Sea ◽  
The Black Sea ◽  
The Mediterranean ◽  
First Time ◽  
One New Species ◽  
A New Species

Two New Families and a New Species of Myxosporeans (Myxozoa, Myxosporea) of the Mediterranean and Black Sea FishesDescriptions of two new families — Polysporoplasmidae fam. n. (Syn. Sphaerosporidae Davis, 1917 in Sitja-Bobadilla, Alvarez-Pellitero, 1995) and Gadimyxidae fam. n. (syn. Parvicapsulidae Schulman, 1953 in Kie et al., 2007), and one new species of myxosporeans —Gadimyxa ovalesp. n. — parasites of fishes of the Mediterranean and the Black Seas are presented. Species of the genus Gadimyxa is found for the first time in the Black Sea.

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.

scholarly journals Hemiasterella aristoteliana n. sp. (Porifera, Hadromerida) from the Aegean Sea with a discussion on the family Hemiasterellidae

1991 ◽  
Vol 61 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Eleni Voultsiadou-Koukoura ◽  
R.W.M. van Soest
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Aegean Sea ◽  
Shallow Waters ◽  
The Family ◽  
The Status ◽  
Northern Aegean Sea ◽  
The Mediterranean ◽  
First Time

A representative of the genus Hemiasterella Carter, 1879 was found for the first time in the Mediterranean Sea during sampling in the shallow waters of the northern Aegean Sea. The new species, H. aristoteliana, is compared with Atlantic Hemiasterella elongata Topsent, 1928. The status of the family Hemiasterellidae is discussed.

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.

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