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1. Are there any distinct genetic sub-populations of sand smelt, Atherina boyeri (Teleostei: Atherinidae) along Italian coasts? Evidence from allozyme analysis

Creator:
Mauro, Annamaria, Arculeo, Marco, Mazzola, Antonio, and Parrinello, Nicolò
Type:
article and TEXT
Subject:
Perciformes, population genetics, allozyme, and Mediterranean Sea
Language:
English
Description:
Two hundred and ninety-nine specimens of Atherina boyeri, collected from five Mediterranean sites (three from the open sea (Chioggia, Catania and Gaeta) and two from river mouths (the Birgi and S. Bartolomeo rivers) were analyzed in order to confirm previous genetic studies. Eigtheen loci were scored from 12 enzymatic systems, 3 of which were polymorphic: EST*, PGM* and PGI*. Mean Fst value (0.300, pFst and genetic distance revealed that samples from the river mouths (Birgi and S. Bartolomeo) were grouped separately from the open sea samples (Catania, Chioggia and Gaeta). These results are in agreement with the most recent classification, which considers A. boyeri as a complex of 3 different species.
Rights:
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2. Ligophorus species (Monogenea: Ancyrocephalidae) from Mugil cephalus (Teleostei: Mugilidae) off Morocco with the description of a new species and remarks about the use of Ligophorus spp. as biological markers of host populations

Creator:
Hafidi, Fouzia El, Rkhami, Ouafae Berrada, de Buron, Isaure, Durand, Jean-Dominique, and Pariselle, Antoine
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Ligophorus maroccanus sp. n., cryptic species marker, geographical distribution, Atlantic Ocean, and Mediterranean Sea
Language:
English
Description:
Gill monogenean species of Ligophorus Euzet et Suriano, 1977 were studied from the teleost Mugil cephalus Linneaus (Mugilidae) from the Mediterranean and Atlantic coasts of Morocco. We report the presence of L. mediterraneus from both the Mediterranean and Atlantic coast and L. cephali and L. maroccanus sp. n. from the Atlantic coast only. The latter species, which is described herein as new, resembles L. guanduensis but differs from this species mainly in having a shorter penis compared to the accessory piece, a proportionally longer extremity of the accessory piece and a less developed heel. The utility of Ligophorus spp. as markers of cryptic species of the complex M. cephalus is discussed in the context of species diversity and geographical distribution of these monogeneans on this host around the world. Presence of different species of Ligophorus on M. cephalus sensu stricto from the Atlantic and Mediterranean coast of Morocco demonstrates the usefulness of these species as fine resolution markers of genetic populations of their host, which are known to inhabit those coasts.
Rights:
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3. Nudaciraxine imperium sp. n. (Monogenea: Axinidae) from the gills of Mediterranean needlefish Tylosurus acus imperialis (Teleostei: Belonidae)

Creator:
Châari, Manel, Derbel, Hela, and Neifar, Lassâd
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Monogenea, Axinidae, Nudaciraxine imperium, gill parasite, Tylosurus acus imperialis, Belonidae, Tunisia, and Mediterranean Sea
Language:
English
Description:
Nudaciraxine imperium sp. n. (Monogenea: Axinidae) is described from the gills of the needlefish Tylosurus acus imperialis (Rafinesque) caught in the Gulf of Gabès, Tunisia. This new species mainly differs from both previously described species, Nudaciraxine gracilis (Linton, 1940) Price, 1962 from Strongylura marina (Walbaum) and Nudaciraxine cabosanlucensis Payne, 1990 from Ablennes sp., by having more testes (42 vs. 20-22 and 32, respectively). Nudaciraxine imperium also differs from N. gracilis by having a median vaginal pore (submedian in N. gracilis), narrower clamps (52-70 µm vs. 75-100 µm) and differently shaped haptoral lateral hamuli. From N. cabosanlucensis it can be distinguished by a J-shaped rather than U-shaped ovary, a longer cirrus pouch (125-190 µm vs. 64-70 µm), an oesophageal bifurcation slightly anterior to genital complex (immediately after pharynx in N. cabosanlucensis) and a wider guard on the lateral hamuli. In agreement with Payne (1990), the diagnosis of the genus Nudaciraxine Price, 1962 is amended as follows: vaginal pore dorsal, median to submedian, armed or not with horn-like spines. This is the first report of the genus Nudaciraxine in the Mediterranean Sea. The potential use of axinid monogeneans as biological tags for subspecies of belonid fishes is discussed.
Rights:
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4. Plectanocotyle major sp. n. (Monogenea: Plectanocotylidae), a gill parasite of Chelidonichthys obscurus (Teleostei: Triglidae) from the Mediterranean Sea

Creator:
Boudaya, Lobna, Neifar, Lassad, and Euzet, Louis
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Monogenea, Plectanocotylidae, Plectanocotyle major, Chelidonichthys obscurus, Teleostei, Triglidae, and Mediterranean Sea
Language:
English
Description:
Plectanocotyle major sp. n. (Monogenea: Polyopisthocotylea: Plectanocotylidae) is described from Chelidonichthys obscurus (Bloch et Schneider, 1801) collected from the Mediterranean coasts (Tunisia and France). The new species is compared to Plectanocotyle gurnardi collected on Chelidonichthys gurnardus and the only other valid species in the genus Plectanocotyle. The new species differs from P. gurnardi by the clamp size (137 µm vs 64 µm for clamp length and 110 µm vs 60 µm for clamp width, respectively) and the length of the male copulatory organ (107 µm vs 144 µm, respectively). Species of the Plectanocotylidae seem to be characterized by an oioxenic specificity.
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5. The discovery of male Caligus brevicaudatus Scott, 1901 (Copepoda: Caligidae) parasitic on tub gurnard, Chelidonichthys lucerna (Linnaeus) from the eastern Mediterranean

Creator:
Demirkale, İbrahim, Özak, Argun Akif, and Geoffrey Allan Boxshall
Format:
electronic, počítač, and online zdroj
Type:
model:article and TEXT
Subject:
korýši, mořské ryby, Crustacea, marine fishes, ectoparasite, redescription, Mediterranean Sea, 2, and 59
Language:
English
Description:
Caligus brevicaudatus Scott, 1901, a common but poorly known species of parasitic copepod, is redescribed from newly collected specimens of both sexes. The new material was collected from the body surface of tub gurnards, Chelidonichthys lucerna (Linnaeus), caught in eastern Mediterranean waters off the Turkish coast. Inadequately described female structures from earlier descriptions are redescribed and illustrated in detail and the male of C. brevicaudatus is described for the first time. The new material of C. brevicaudatus is compared with material collected by A. Scott and stored in the collections of the Natural History Museum, London. In addition, a voucher specimen of Caligus uranoscopi Vaissière, 1955, stored in the collections of the Muséum National d'Histoire Naturelle in Paris is re-examined. Caligus uranoscopi is recognised as a junior subjective synonym of C. brevicaudatus since it does not differ in any substantive characters., İbrahim Demirkale, Argun Akif Özak, Geoffrey Allan Boxshall., and Obsahuje bibliografii
Rights:
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