scholarly journals New Mediterranean Biodiversity Records (December 2012)

2012 ◽  
Vol 13 (2) ◽  
pp. 312 ◽  
Author(s):  
M. THESSALOU-LEGAKI ◽  
O. AYDOGAN ◽  
P. BEKAS ◽  
G. BILGE ◽  
Y.O. BOYACI ◽  
...  
Keyword(s):  
Eastern Mediterranean ◽  
Petromyzon Marinus ◽  
Aegean Sea ◽  
Mediterranean Species ◽  
Caulerpa Racemosa ◽  
The North ◽  
New Localities ◽  
Siganus Rivulatus ◽  
First Time ◽  
Mediterranean Biodiversity

This paper presents records extending or confirming the distribution of Mediterranean species. Three alien algae are included, namely Codium taylorii reported for the first time from the Aegean and Turkey (Izmir Gulf), Caulerpa racemosa var. cylindracea (Karpathos and Chalki Isl., Aegean Sea) and Ganonema farinosum (Karpathos Isl., Aegean Sea). As far as animals are concerned, Litarachna divergens (Acari: Hydrachnidia) was recorded (Side, Eastern Mediterranean) and represents a new amendment at genus level for Turkish fauna. Other invertebrates include alien species such as the crabs Dyspanopeus sayi (Lago Fusaro, SW Italy), Percnon gibbesi (Larnaca, Cyprus; Karpathos and Chalki Isl., Aegean Sea) and Callinectes sapidus (Voda estuary, NW Greece), the nudibranch Aplysia dactylomela (Boka Kotorska Bay, Montenegro), the gastropod Conomurex persicus (Karpathos and ChalkiIsl., Aegean Sea) and the bryozoan Electra tenella (Livorno harbour and Messina Straits area). The alien fish Siganus luridus, Siganus rivulatus, Fistularia commersonii, Sphyraena chrysotaenia and Sargocentron rubrum are also reported from the islands of Karpathos and Chalki, and Pteragogus pelycus from Heraklion Bay, Crete. In addition, new localities for four rare Mediterranean inhabitants are given: the cephalopod Thysanoteuthis rhombus (NW Sardinia) and the fish: Lampris guttatus (Calabria, S Italy), Petromyzon marinus (Gokova Bay) and Remora australis (Saronikos Gulf), while the opisthobranch gastropod Cerberilla bernadettae is reported for the first time from the E Mediterranean (Cyprus). Finally, three species of the Aegean ascidiofauna are recorded for the first time: Lissoclinum perforatum, Ciona roulei and Ecteinascidia turbinata. Furthermore, it was established that Phallusia nigra has extended its distributional range to the north of the Aegean Sea.

scholarly journals A three dimensional, full life cycle, anchovy and sardine model for the North Aegean Sea (Eastern Mediterranean): Validation, sensitivity and climatic scenario simulations

2021 ◽  
Vol 22 (3) ◽  
pp. 653
Author(s):  
ATHANASIOS GKANASOS ◽  
EUDOXIA SCHISMENOU ◽  
KOSTAS TSIARAS ◽  
STYLIANOS SOMARAKIS ◽  
MARIANNA GIANNOULAKI ◽  
...  
Keyword(s):  
Temperature Increase ◽  
Eastern Mediterranean ◽  
Larval Growth ◽  
Somatic Growth ◽  
Aegean Sea ◽  
Fish Growth ◽  
Prey Concentration ◽  
The North ◽  
North Aegean ◽  
North Aegean Sea

We present the development of a 3D full-lifecycle, individual-based model (IBM) for anchovy and sardine, online coupled to an existing hydrodynamic/biogeochemical low-trophic level (LTL) model for the North Aegean Sea. It was built upon an existing 1D model for the same species and area, with the addition of a horizontal movement scheme. In the model, both species evolve from the embryonic stage (egg+yolk sac larva) to the larval, juvenile, and adult stages. Somatic growth is simulated with the use of a “Wisconsin” type bioenergetics model and fish populations with an adaptation of the ‘super individuals’ (SI) approach. For the reference simulation and model calibration, in terms of fish growth and population biomass, the 2000-2010 period was selected. Interannual biomass variability of anchovy was successfully represented by the model, while the simulated biomass of sardine exhibited low variability and did not satisfactorily reproduce the observed interannual variability from acoustic surveys. The spatial distribution of both species’ biomass was in relatively good agreement with field data. Additional single-species simulations revealed that species compete for food resources. Temperature sensitivity experiments showed that both species reacted negatively to a temperature increase. Anchovy, in particular, was more affected since its spawning and larval growth periods largely overlap with the period of maximum yearly temperature and low prey concentration. Finally, simulation experiments using IPCC climatic scenarios showed that the predicted temperature increase and zooplankton concentration decrease in the future will negatively affect anchovy, resulting in sardine prevalence.

scholarly journals Development, application and evaluation of a 1-D full life cycle anchovy and sardine model for the North Aegean Sea (Eastern Mediterranean)

PLoS ONE ◽  
2019 ◽  
Vol 14 (8) ◽  
pp. e0219671 ◽  
Author(s):  
Athanasios Gkanasos ◽  
Stylianos Somarakis ◽  
Kostas Tsiaras ◽  
Dimitrios Kleftogiannis ◽  
Marianna Giannoulaki ◽  
...  
Keyword(s):  
Life Cycle ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
The North ◽  
Full Life Cycle ◽  
North Aegean ◽  
Full Life ◽  
North Aegean Sea ◽  
Development Application

Age, growth and reproductive biology of the saddled seabream (Oblada melanura) in the North Aegean Sea, Eastern Mediterranean

2020 ◽  
Vol 49 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Ismail Burak Daban ◽  
Ali Ismen ◽  
Mukadder Arslan Ihsanoglu ◽  
Koray Cabbar
Keyword(s):  
Growth Parameters ◽  
Eastern Mediterranean ◽  
Length Distribution ◽  
Total Mortality ◽  
Aegean Sea ◽  
Growth Equation ◽  
Weight Relationship ◽  
The North ◽  
North Aegean Sea ◽  
First Maturity

AbstractThis study determines the length distribution, length– weight relationship, age, growth parameters, mortality rate, sex ratios, length at first maturity and reproduction of saddled seabream (Oblada melanura) collected monthly by fishermen around the Northern Aegean Sea between November 2017 and October 2018. The length–weight relationship was calculated as W=0.0091×L3.11 (R2=0.95) and positive allometric growth was found. The condition factor and GSI varied between 0.81–1.58 and 0.01–9.61, respectively. The spawning season extended from May to July and peaked in June. Total lengths at 50% maturity were 18.97 cm for males and 18.83 cm for females. Parameters of the von Bertalanffy growth equation were: L∞ =29.91 cm, K =0.27 per year, t0 =−0.82 year and age varied between 1 and 8. The instantaneous rates of total mortality (Z) and natural mortality (M) were 1.36 and 0.58 per year, respectively. Rates for fishing mortality F and exploitation E were 0.78 and 0.57 per year, respectively. The mean absolute fecundity (F) was 117 075±23 243 oocytes, ranging from 19130 to 470 132.

First insights towards the population genetic structure and the phylogeographic status of the horse mussel (Modiolus barbatus) from the eastern Mediterranean

2018 ◽  
Vol 99 (5) ◽  
pp. 1111-1118 ◽  
Author(s):  
Ioannis A. Giantsis ◽  
Athanasios Exadactylos ◽  
Konstantinos Feidantsis ◽  
Basile Michaelidis
Keyword(s):  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Genetic Profile ◽  
The North ◽  
Marine Bivalves ◽  
Geographic Populations ◽  
The North Sea ◽  
Low Levels ◽  
Asian Pacific ◽  
Horse Mussel

AbstractThe horse mussel Modiolus barbatus is a marine benthic bivalve, distributed mainly in the Mediterranean basin, that constitutes a fishery product of high economic importance and a promising candidate for aquaculture. The current study provides the first insights regarding the genetic profile of M. barbatus populations from the eastern Mediterranean, by analysis of a partial segment of the mitochondrial COI gene in individuals collected from five sampling localities within the Aegean Sea. To the best of our knowledge, the derived haplotypes represent the first DNA barcodes of M. barbatus from the entire Mediterranean region. Maximum likelihood phylogenetic analysis revealed that M. barbatus from the North Sea and M. barbatus from the eastern Mediterranean may not belong to the same species and as a consequence, there might be three species of the genus Modiolus in Europe. On the other hand, eastern Mediterranean M. barbatus haplotypes were found to be more closely related to the Asian-Pacific Modiolus species. All geographic populations analysed displayed high levels of genetic diversity, in terms of haplotype and nucleotide diversity and a considerable number of unique alleles. Divergence among populations was found at generally low levels, corresponding with the majority of pairwise Fst values not being significant. These findings suggest no population structure and high levels of gene flow, a common feature observed in marine bivalves with long pelagic larval phases.

Alien and native fish in gill nets at Rhodes, eastern Mediterranean (2014–2015)

2017 ◽  
Vol 97 (3) ◽  
pp. 635-642 ◽  
Author(s):  
Maria Corsini-Foka ◽  
Stefanos Mastis ◽  
Gerasimos Kondylatos ◽  
Ioannis E. Batjakas
Keyword(s):  
Native Species ◽  
Fish Assemblages ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Total Biomass ◽  
Coastal Fish ◽  
Gill Net ◽  
Fish Catch ◽  
Siganus Rivulatus ◽  
Catch Composition

Fish catch composition in 21 gill net samplings performed between 2014 and 2015 at Rhodes Island (Aegean Sea, Greece) was analysed, with the aim to contribute in filling scattered information on coastal fish assemblages in a Mediterranean region heavily impacted by biological invasions. A total biomass of 183 kg was collected comprising 1070 fish individuals, distributed along 43 native and six Lessepsian migrant species. The alien Siganus luridus prevailed in terms of frequency of occurrence, followed by the native Sparisoma cretense, which exhibited the higher abundance and biomass, followed by S. luridus, Scorpaena scrofa and Siganus rivulatus. Ratios between alien and native species as well as between their abundance and biomass are discussed.

Temporal Variations in Fine Sand Assemblages in the North Aegean Sea (Eastern Mediterranean)

2004 ◽  
Vol 89 (2) ◽  
pp. 175-187 ◽  
Author(s):  
Evdokia Kourelea ◽  
Dimitrios Vafidis ◽  
Chariton-Charles Chintiroglou ◽  
Georgios Trontsios ◽  
Louis Chicharo
Keyword(s):  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Fine Sand ◽  
Temporal Variations ◽  
The North ◽  
North Aegean ◽  
North Aegean Sea

scholarly journals To the distribution of noctuid moths (Lepidoptera: Noctuoidea) in the North-Western Pryazovia and adjacent regions of the steppe zone of Ukraine

2019 ◽  
Vol 27 (2) ◽  
pp. 23-33
Author(s):  
S. I. Suchkov ◽  
Yu. M. Geryak
Keyword(s):  
Rare Species ◽  
New Records ◽  
Steppe Zone ◽  
The North ◽  
Clostera Anastomosis ◽  
New Localities ◽  
First Time ◽  
North Western

The new records of 94 species of noctuid moths (Noctuoidea) in the North-Western Pryazovia and adjacent regions of the steppe zone of Ukraine are presented. One species Dysgonia rogenhoferi is recorded in Ukraine for the first time. Founds of species Eublemma amasina and Caradrina expansa are the second in our country. One species (Eublemma amasina) in Dnipro Region, 2 (Ptilophora plumigera and Schargacucullia gozmanyi) — in Donetsk Region, 2 (Cerura erminea and Apamea unanimus) — in Odesa Region, 5 (Acantholipes regularis, Dysgonia rogenhoferi, Caradrina expansa, Luperina rubella, and Aporophyla canescens) — in Zaporizhzhya Region, 7 (Clostera anastomosis, Zanclognatha lunalis, Polyphaenis sericata, Protarchanara brevilinea, Aporophyla canescens, Lacanobia praedita, and Dichagyris forcipula) — in Kherson Region, and 10 (Clostera anastomosis, Cucullia argentina, Meganephria bimaculosa, Hoplodrina blanda, Sedina buettneri, Tiliacea aurago, Cosmia diffinis, Cosmia affinis, Aporophyla lutulenta and Xestia trifida) — in Mykolaiv Region are registered for the first time. In addition, new localities of a number of little-known, local and rare species in Ukraine or in its separate regions were discovered.

scholarly journals Description of the first Lessepsian squid migrant, Sepioteuthis lessoniana (CEPHALOPODA: Loliginidae), in the Aegean Sea (Eastern Mediterranean)

2009 ◽  
Vol 10 (2) ◽  
pp. 87 ◽  
Author(s):  
E. LEFKADITOU ◽  
M. CORSINI-FOKA ◽  
G. KONDILATOS
Keyword(s):  
Pacific Ocean ◽  
Species Distribution ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Main Body ◽  
Morphometric Measurements ◽  
Important Resource ◽  
Commercially Important ◽  
Sepioteuthis Lessoniana ◽  
First Time

Loliginid squids of the Sepioteuthis lessoniana complex are widely spread in the Indo-Pacific Ocean, where they constitute a commercially important resource for neritic fisheries. Sepioteuthis lessoniana is the only Lessepsian squid migrant till now, recorded for the first time in the Mediterranean in 2002 along the Turkish Levantine coasts. Two maturing males, with mantle lengths 193 mm and 244 mm, have been recently caught near the coasts of Rhodes Island (SE Aegean), extending the species distribution northward, into Hellenic waters. Their identity was confirmed by comparison of the main body, beak characteristics and morphometric measurements with those available in the literature for this species. Suspected expansion of the Lessepsian loliginid into the Aegean Sea, due to the gradual warming of the sea, is discussed.

scholarly journals New Fisheries-related data from the Mediterranean Sea (April 2014)

2014 ◽  
Vol 15 (1) ◽  
pp. 213 ◽  
Author(s):  
K. STERGIOU ◽  
D.C. BOBORI ◽  
F.G. EKMEKÇİ ◽  
M. GÖKOĞLU ◽  
P.K. KARACHLE ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Feeding Habits ◽  
Aegean Sea ◽  
Northern Greece ◽  
Related Data ◽  
The North ◽  
North Aegean ◽  
The Mediterranean ◽  
North Aegean Sea

As part of its policy, Mediterranean Marine Science started from 2014 to publish a new series of collective article with fisheries-related data from the Mediterranean Sea. In this first collective article we present length frequencies and weight-length relationships for the northern brown shrimp Farfantepenaeus aztecus in the eastern Mediterranean, length-weight relationships for 10 fish species in the North Aegean Sea, the feeding habits for 11 sparid fishes in the North Aegean Sea, a review of the existing literature on the feeding and reproduction of common carp Cyprinus carpio in Anatolia (Turkey) and mouth dimensions and the relationships between mouth area and length for seven freshwater fishes from Lake Volvi (Northern Greece).

scholarly journals Alien foraminifers from Greek coastal areas (Aegean Sea, Eastern Mediterranean)

2010 ◽  
Vol 11 (1) ◽  
pp. 155 ◽  
Author(s):  
O. KOUKOUSIOURA ◽  
M.D. DIMIZA ◽  
M.V. TRIANTAPHYLLOU
Keyword(s):  
Additional Data ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Coastal Areas ◽  
Foraminiferal Species ◽  
Distributional Range ◽  
First Time

The present study provides additional data on the distributional range of six alien foraminiferal species in living assemblages from Greek coastal areas (Aegean Sea, Eastern Mediterranean). Amphistegina lobiferaLARSEN 1976, Sorites orbiculus (FORSK L 1775) and Coscinospira hemprichii EHRENBERG 1839 are well established in Greek coastal areas, whereas Triloculina fichteliana D'ORBIGNY 1839, Planogypsina acervalis (BRADY 1884) and Cymbaloporetta plana (CUSHMAN 1924), are recorded for the first time in this paper. The occurrence of these species in a number of sites in the Aegean Sea establishes their presence in the Eastern Mediterranean.

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