Search

This article includes 23 new records of alien and cryptogenic species in the Mediterranean Sea, belonging to 4 Phyla (Chordata, Echinodermata, Arthropoda and Mollusca), distributed from the Alboran to the Levantine Sea. Records are reported from eight countries listed from West to East as follows: Algeria: new records of the Atlantic blue crab Callinectes sapidus; Spain: further spread and establishment of the sea slug Lamprohaminoea ovalis in continental shores; Tunisia: first record of the Atlantic Blue Crab Callinectes sapidus in the Gulf of Gabes; Italy: a new occurrence of the pufferfish Lagocephalus sceleratus in Northern Ionian waters; first record of Cephalopholis taeniops in the Ionian Sea; first record of the redlip blenny, Ophioblennius atlanticus in the Ionian Sea; Slovenia: first record of the isopod Paranthura japonica in Slovenia; Greece: first record of the molluscs Eunaticina papilla, Plocamopherus ocellatus and the fish Cheilodipterus novemstriatus; first record of the ascidian Ecteinascidia turbinata in Kriti; the long-spined sea urchin Diadema setosum in the Ionian Sea; Turkey: first record of the sea spider Ammothea hilgendorfi; the stomatopod Cloridina cf. ichneumon; the fishes Pempheris rhomboidea from the Sea of Marmara and Paranthias furcifer from the Aegean Sea; Lebanon: new records of the fishes Arothron hispidus, Rachycentron canadum, Heniochus intermedius and Acanthurus monroviae; first record of Acanthostracion polygonius. The records of Cloridina cf. ichneumon from southern Turkey and the fish Acanthostracion polygonius from Lebanon, both being the first Mediterranean records, are noteworthy.

the distribution of mesozooplankton has been established in the Bay of Vlora due to the collection of replicate samples from 17 different stations, and two different periods (seasons). A clearly confined area has not been individuated, probably due to the steep copasts

The zooplankton composition of Lake Varano has been studied from June 2007 to May 2008 considering three sampling stations (western, central, eastern). A total of 55 zooplankton categories were recognised, with medusae Aurelia aurita as the main macroscopic species; 43 of them occurred in less than 50% of the 71 samples collected, highlighting the seasonal aspect of the community. The remaining 12 categories, present in more than 50% of samples, were numerically dominated by the copepod ‘Non Indigenous Species’ Acartia tonsa (reported here for the first time in the lake), which occurred throughout the year. Maximal abundance of zooplankton was recorded in the eastern sampling station, while the lowest values were recorded in the central one. The statistical analysis of data allowed us to establish a not sharp separation of the three sampling stations, apart from isolated dates. The present zooplankton assemblage showed that about 40% of its components differed from those recorded in a study of 18 years before. This last comparison is not easily referable to the ongoing climate warming (the dominant species are of cold temperate origin) and analysis of uninterrupted time series could be useful to understand the underlying reasons.

viene presentato un progetto per la realizzazione di un acquario in Santa Maria al Bagno (Nardò-LE) impostato sulla presenza di relitti sommersi (di cui la zona è ricca) piuttosto che sulla biodiversità marina

A NEW SPECIES FOR THE MEDITERRANEAN HAS BEEN FOUND IN A SUBMERGED CAVE. IT IS A SPECIES DESCRIBED FROM THE GUINEA GULF. IT IS NOT SURE IT IS OF RECENT INTRODUCTION DUE THE CRIPTIC BEHAVIOUR IT HAS.

DESCRIZIONE DELLA FAUNA BENTHONICA DELA GROTTA DEL SIFONE, CON ORGANIZZAZIONE DEI RISULTATI SECONDO LA DISTANZA DALL'ENTRATA DELLA GROTTA

il lavoro è una rassegna delle grotte sommerse censite e cartografate attorno al Salento meridionale. dall'ultimo aggiornamento del 1999 altre 24 grotte sono state aggiunte.

The art of selecting, grooming, and showing of Cichlid fishes of the genus Discus is presented. Feeding, reproduction, rearing, and behaviour of such fresh water fishes are treated.

Several studies have described patterns of distribution and species composition of sessile assemblages from marine caves but few have examined the processes of recruitment and larval settlement in the earlier stages of substrate colonisation. The present study evaluated (i) the distinctness of newly recruited assemblages on the local spatial scale, (ii) how this assemblage distinctness changes over time and (iii) how the recruitment patterns are affected by a different start-time in different positions in the cave. Two sets of 90 baked-clay panels (15 x 15 x 1 cm) were deployed in March (E1) and October 2002 (E2) at three positions in the shallow submarine cave 'Grotta di Ciolo' (South-East Italy, Central Mediterranean Sea): entrance (P1) and at 20 m (P2) and 80 m (P3) from the entrance, respectively. Each position was represented by two areas (1.5 x 1.5 m), and three panels from each area were randomly removed after 1, 3, 6, 12 and 24 months. The assemblages of the settled organisms comprised a total of 63 taxa. Different succession patterns were highlighted among assemblages across positions. A recruitment period of 2 years allowed a complete colonisation of panels at P1, where both encrusting algae dominated rocky walls and panels. In contrast, recruitment was very slow at P2 and P3, where the mature benthic community was not replicated on the 2-year panels. Finally, there was a partial convergence towards a common ecological succession in series started at different times

Negli anni 2003, 2004, e 2005, sono state organizzate 3 spedizioni finalizzate alla esplorazione subacquea degli ambienti costieri dell’Albania Meridionale. Durante la prima spedizione, all’estremità della penisola del Karaburun, sono state rinvenute ed esplorate 4 cavità sommerse il cui rilievo speditivo e la descrizione sommaria dei popolamenti rinvenuti sono stati qui riportati per la prima volta. Nel corso della seconda e della terza spedizione si sono perfezionate le misurazioni e le descrizioni delle caratteristiche biologiche della parte sommersa della grande grotta di Haxhi Ali.

La palude del Capitano, sprofondamento carsico allagato e in comunicazione con la falda acquifera, è stata studiata in modo interdisciplinare. l'esplorazione speleosubacquea ha consentito di stabilire una prosecuzione in cunicolo sommerso verso nord-ovest. lo studio del plancton ha consentito di effettuare una prima lista faunistica di questa particolare biocenosi.

The composition of mesozooplankton and their space-time distribution in the Gulf of Vlore¨ (southern Albania, Mediterranean Sea) are described for the first time. Sampling was carried out during two oceanographic cruises (May 2007, January 2008) with two replicates at each of 17 stations at each time, making a total of 68 samples. The study aimed to describe the influence of confinement (defined as distance from the open sea) and anthropogenic impact (defined as vicinity to the east coast of the gulf) on zooplankton composition. A total of 198 taxa were recognised in the whole zooplankton assemblage, with only 136 taxa common to both periods and only two species present in all samples. Statistical analysis of data distinguished the Mezokanal area (the boundary between the gulf and the open sea) from three other areas inside the gulf. Differences were also found among the areas inside the gulf at increasing degree of confinement. Mesozooplankton varied more sharply with confinement than with anthropogenic impact and yielded moredetailed space partitioning of the gulf than microzooplankton, which had been used in a previous study

Thirty-eight nonindigenous marine species (NIS) (macroalgae, sponges, hydrozoans, molluscs, polychaetes, crustaceans, ascidiaceans and fish), are reported from the Apulian coast of Italy. Shipping, aquaculture and migration through the Suez Canal are the main pathways of introduction of the NIS. In Apulian waters, 21% of NIS are occasional, 18% are invasive and 61% are well-established. It is highly probable that more NIS will arrive from warm-water regions, because Mediterranean waters are warming. Furthermore, some of the successful NIS must have the ability to become dormant in order to survive adverse conditions, either seasonal or during long journeys in ballast waters. The identification of NIS depends greatly on the available taxonomic expertise; hence the paucity of taxonomists hinders our knowledge of NIS in our seas. We propose the creation and maintenance of a network of observatories across the Mediterranean to monitor the changes that take place along its coasts.

A public Aquarium was realized in the frame of the European Territorial Cooperation Programme, ETCP, Greece-Italy 2007-2013. Such a project (acronym APREH) started in 2011 with the University of Salento as Leader Partner, Province of Lecce and Municipality of Nardò as Italian partners, and University of Patra and Municipality of Kefallinia as Greek partners. The proposal of an Aquarium had the aim to promote the archaeological and natural submarine heritage along the coastline of the Salento Peninsula and of the Kefallinia island. The Italian partnership realized an Aquarium at Santa Maria al Bagno (Nardò, Lecce), restructuring an ancient building (Fig. 1) with services, a conference room, and 4 exhibition environments equipped with a total of 17 tanks of variable volume (25 – 2,500 litres), hosting a total of 100 species of marine organisms (Tab. 1, Fig. 2). Four tanks were equipped with reproductions of wrecks: a Junker 88 airplane, an Italian Cargo Ship, an English destroyer of the 2nd World War, and a Roman ship of the 2nd Century b.C. with its cargo of amphorae. The official opening was celebrated on 05 June 2015 (Fig. 3). The structure is the unique public Aquarium functioning in the Southern Italy apart from Naples; it has been open to visitors only during the 13 week ends of June-August, receiving more than 7,000 visitors mainly coming from Province of Lecce and the rest of Italy (Tab. 2). Also due to front end evaluation studies, a plan for the future functioning of the Aquarium is presented, taking into consideration its educative role, and its touristic attractiveness.

Fish assemblages of three shallow marine caves from the Salento Peninsula (Apulia, SE Italy) were investigated in July 2000. Data were collected in situ by using visual census. A total of nineteen fish species were recorded inside the caves. The species richness generally displayed a similar pattern in all three caves, decreasing from the entrance towards the innermost sections, whereas the patterns of total fish abundance differed among caves. Apogon imberbis (mainly represented by juveniles) was the most important species in terms of number of individuals (accounting for more than 85% of the censused fish) and showed a fairly even distribution inside the investigated caves. Without the numerical contribution of A. imberbis, fish abundance decreased from the entrance to the inner sections and this pattern was common to all three caves. Juvenile fishes of economic interest (e. g., Diplodus vulgaris and Epinephelus marginatus) were also recorded inside. The present study suggests that: (1) environmental constraints could affect distribution patterns in fish species richness and in the abundance of several fish along the axis of “blind caves” (with a single entrance), as already observed for sessile benthos and plankton assemblages; (2) shallow marine caves of the Salento Peninsula could exert the role of refuge and/or nursery for some littoral fish species during the adult and/or juvenile stages of their life histories.

This paper is the first attempt to study the recruitment of Serpuloideans in a Mediterranean marine cave through the use of artificial substrates placed in three different positions, from the entrance to the interior of the cave. This study provides qualitative and quantitative data concerning Serpuloidea recruitment on panels removed successively after one, three, six and 12 months of permanence in the cave. A homogeneous distribution of juveniles Spirorbidae throughout the cave axis had already been detected after one month of panel immersion. Spirorbids were recorded also on panels removed after three months as well as serpulids, which began to be detected during this sampling time, even though represented by just one species. A significantly different pattern of distribution throughout the cave axis was observed after only six months, while other serpulids were detected for the first time. The pattern of species distribution seemed to reflect the biotic and environmental conditions of the cave. The highest serpuloidean species abundance and diversity was found on panels placed in the intermediate position within the cave. After only one year of panel immersion, a total of 20 taxa (11 Serpulidae and 9 Spirorbidae) was recorded, including five species listed for the first time in the marine caves of the Salento Peninsula.