First evidence of the utility of cephalopods for biomonitoring program in the field: case of Sepia officinalis south west of Mediterranean Sea (Gulf of Gabes, Tunisia)

2022 ◽  
Author(s):  
Marwa Ajala ◽  
Walid Ben Ameur ◽  
Ali Annabi
Keyword(s):  
Mediterranean Sea ◽  
Sepia Officinalis ◽  
Gulf Of Gabes ◽  
Field Case ◽  
Gulf Of Gabès ◽  
South West

First data on the age, growth and sexual maturity of the piked spurdog, Squalus megalops (Chondrichthyes: Squalidae), in the Gulf of Gabès (central Mediterranean Sea)

2016 ◽  
Vol 67 (5) ◽  
pp. 578 ◽  
Author(s):  
Sondes Marouani ◽  
Hasna Kadri ◽  
Mohamed Nejmeddine Bradai
Keyword(s):  
Mediterranean Sea ◽  
Growth Parameters ◽  
Natural Mortality ◽  
Central Mediterranean ◽  
Gulf Of Gabes ◽  
Band Formation ◽  
Mortality Estimation ◽  
Gulf Of Gabès ◽  
Central Mediterranean Sea ◽  
Males And Females

The occurrence of the piked spurdog (Squalus megalops) in the Gulf of Gabès (Tunisia, central Mediterranean Sea) was recently confirmed. The present study is the first to report the age, growth, longevity, natural mortality and size and age at maturity of this species in the Mediterranean Sea, precisely in the Gulf of Gabès. Marginal increment and edge analysis suggested annual band formation. Age estimates ranged from 0 to 26 and from 0 to 29 years for males and females respectively. Von Bertalanffy growth parameters derived from length-at-age data were: the theoretical asymptotic length L∞=82.31±1.55cm, the growth-rate coefficient k=0.06±0.003 years–1, the theoretical age at length zero t0=–3.89±0.25 years for females; and L∞=68.55±0.98cm, k=0.08±0.003 years–1, t0=–4.65±0.25 years for males. Males and females reached maturity at 44.36- and 56.41-cm total length, corresponding to 8.39 and 15.38 years respectively. Longevity estimates were 32.85 and 46.11 years for males and females respectively. On the basis of life-history parameters, natural mortality estimation M ranged from 0.14 to 0.17.

scholarly journals High diversified benthic habitats in a tidal Mediterranean sub-tropical environment: the case of the Gulf of Gabès (Tunisia)

2018 ◽  
Author(s):  
Abir Fersi ◽  
Nawfel Mosbahi ◽  
Ali Bakalem ◽  
Jean-Philippe Pezy ◽  
Alexandrine Baffreau ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Tropical Environment ◽  
Gulf Of Gabes ◽  
Annual Cycles ◽  
Gulf Of Gabès ◽  
Zostera Noltei ◽  
Sediment Types ◽  
The Mediterranean ◽  
The Impact

The Gulf of Gabès on the southern coasts of Tunisia in the central part of the Mediterranean is a very shallow basin, characterized by semidiurnal tides, attaining a range of 2.3 m during spring tides. The intertidal zone was covered by extended Zostera (Zosterella) noltei Hornemann, 1832 beds mainly developed around the Kneiss Islands while tidal channels ensured the water circulation in this sub-tropical environment with very low freshwater input and high summer temperature. In spite of protected conventions, the area remained under high human pressures: overfishing, and the impact of the pollution of the phosphate industry. Intensive sampling in both intertidal and shallow subtidal zones during annual cycles permitted to identify a rich macrofauna which increase considerably the species known in this eastern part of the Mediterranean Sea. More than 50 species are added for the Tunisian fauna. Moreover, patterns of diversity are analysed with the sediment types, presence or absence of Zostera noltei seagrass bed, and human pressures. The list of the collected species are compared with those of surrounding areas in both Western and Eastern Mediterranean Sea.

Allopodocotyle tunisiensis sp. nov. (Digenea, Opecoelidae), a parasite of Solea aegyptiaca (Teleostei, Soleidae) off Tunisia

2009 ◽  
Vol 54 (4) ◽  
Author(s):  
Hela Derbel ◽  
Lassad Neifar
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Seminal Vesicle ◽  
Ventral Sucker ◽  
Anterior Margin ◽  
Gulf Of Gabes ◽  
Gulf Of Gabès ◽  
The Status ◽  
The Mediterranean

AbstractAllopodocotyle tunisiensis sp. nov. is described from the intestine of Solea aegyptiaca Chabanaud collected from the Gulf of Gabès in the Mediterranean Sea off Tunisia. The new species belongs to the group C of Allopodocotyle Pritchard, 1966 species (sensu Bray 1987). It differs from its congeners in this group by the shape of the seminal vesicle and the anterior extend of the vitellarium which varies between just posterior to the ventral sucker and anterior margin. A key to the Allopodocotyle species of group C is presented. The status of the genera Allopodocotyle and Macvicaria (Gibson and Bray 1982) are briefly discussed.

Hypocreadium caputvadum sp. nov. (Digenea, Lepocreadiidae), an intestinal parasite of the grey triggerfish, Balistes capriscus (Teleostei, Balistidae) from the Gulf of Gabès, Mediterranean Sea

2011 ◽  
Vol 56 (3) ◽  
Author(s):  
Hichem Kacem ◽  
Hela Derbel ◽  
Lassâd Neifar
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Intestinal Parasite ◽  
Gulf Of Gabes ◽  
Gulf Of Gabès ◽  
Balistes Capriscus ◽  
Southern Mediterranean

AbstractHypocreadium caputvadum sp. nov. (Digenea, Lepocreadiidae) is described from the intestine of Balistes capriscus Gmelin collected from the Gulf of Gabès (Tunisia) in the southern Mediterranean Sea. This new species can be distinguished by a combination of characteristics shared by no other described species of Hypocreadium Ozaki, 1936. These characteristics include the presence of a distinct anterior notch, the follicular vitellarium confluent in the forebody, the presence of a muscular sphincter at the level of the anterior third of the metraterm and the size and the position of the cirrus-sac.

Age, growth, sexual maturity and reproduction of the thornback ray,Raja clavata(L.), of the Gulf of Gabès (south-central Mediterranean Sea)

2013 ◽  
Vol 10 (4) ◽  
pp. 416-425 ◽  
Author(s):  
Hasna Kadri ◽  
Sondes Marouani ◽  
Bechir Saïdi ◽  
Mohamed Nejmeddine Bradai ◽  
Abderrahmen Bouaïn ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Sexual Maturity ◽  
Central Mediterranean ◽  
Gulf Of Gabes ◽  
Gulf Of Gabès ◽  
South Central ◽  
Thornback Ray ◽  
Raja Clavata ◽  
Central Mediterranean Sea
Sign in / Sign up

Export Citation Format

Share Document