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Mohamed Bouderbala

  • Biodiversity Journal, 9 (4): 369-373

    Amaria Latefa Bouziani, Alae-Eddine Belmahi, Youcef Belmahi, Sihem Abid-Kachour & Mohamed Bouderbala
    Reproductive Biology of Diplodus vulgaris (Geoffroy Saint-Hilaire, 1817) (Pisces Sparidae) in the west coast of Algeria
    https://doi.org/10.31396/Biodiv.Jour.2018.9.4.369.373

    ABSTRACT
    The study of the reproduction of Diplodus vulgaris (Geoffroy Saint-Hilaire, 1817) (Pisces Sparidae) of the Algerian West coast - carried out from September 2015 to August 2016 - related to 472 specimens, whose overall length ranged between 14.6 cm and 28.4 cm. The ratio of gonad weight to total weight was assessed monthly, and the evolution of the stages of sexual maturity revealed that, for D. vulgaris, the period of reproduction is between October and February with an oviposition in January. The sex ratio related to the size showed that males are dominant in the classes of small sizes (14–18 cm) and females dominate in the classes of great sizes (19–29 cm).

  • Biodiversity Journal, 9 (4): 357-368

    Samira Ait Darna, Ahlem Amina Taleb Bendiab, Salim Mouffok, Alae-Eddine Belmahi & Mohamed Bouderbala
    Observation on distribution, biology, growth, diet and feeding strategy of blackmouth catshark Galeus melastomus (Rafinesque, 1810) (Chondrichthyes: Scyliorhinidae) in western Algerian coasts
    https://doi.org/10.31396/Biodiv.Jour.2018.9.4.357.368

    ABSTRACT
    The blackmouth catshark Galeus melastomus (Rafinesque, 1810) (Chondrichthyes Scyliorhinidae) is an accidentally caught species and it acts as a sentinel, by reflecting the state of the region’s fish stocks. Its vulnerability to the impact of fishing, along with the low fertility and late reproduction, do not ensure a good renewal. Data, collected during 13 months from November 2015 to November 2016, were analysed to enrich our knowledge on the population, reproductive biology, growth, and feeding strategy of the blackmouth catshark from the Western coast of Algeria. A total of 551 specimens, 360 males and 191 females, were caught. Their size ranged from 25 cm to 56 cm for both sexes. The length of the first sexual maturity was stunted at 54 cm in females. The asymptotic length was deduced from the von Bertalanffy growth equation to be higher for males than females (females: L∞ = 51.79 cm; males L∞ = 52.14 cm) and the study of the height-weight relationship revealed allometric growth. 551 stomachs were examined and the vacuity index was found to be 63.75%. The preys identified belonged primarily to three major groups: Crustaceans, Osteichthyes, and Cephalopods. Our results show that the feeding strategy of G. melastomus is to be considered generalist and differs from one month to another.

  • Biodiversity Journal, 9 (3): 205-212

    Lilia Ait Mohamed Amer, Imene Benali, Saliha Dermeche & Mohamed Bouderbala
    Seasonal variations of the biometric indices of Patella rustica Linnaeus, 1758 (Gastropoda Patellidae) from contrasted sites of the western Algerian coast
    https://doi.org/10.31396/Biodiv.Jour.2018.9.3.205.212

    ABSTRACT
    The objective of this study is the evaluation of the resistance of the bioindicative species Patella rustica Linnaeus, 1758 (Gastropoda Patellidae) existing in the contrasted sites of the Algerian occidental seaboard through a follow-up of the seasonal variations of biometric indices. It is based on the analysis of biometric parameters of 600 individuals of this Gastropod mollusk from five sites: Madagh (MD), Bouzedjar Harbor (BH), Ain El Turck (AT), Oran Harbor (OH), and Kristel (KR). The seasonal sampling has been carried out and measurements on the height of the shell (H), its length (L), and its total weight (TW) are taken for all the populations of P. rustica. The correlation of the different measurements (length-height, length-total weight, height-total weight), with the help of the power curve and following STUDENT “ t ” test, DUNCAN, and the ACP, reveals the development of its shell first in height, followed in second position by the length, and this for the five sites under study. Weight would thus be the parameter under analysis that evolves the least quickly as compared to the other two biometric parameters involving a generally significant difference between the five sites under study. These results confirm that the growth of this mollusk varies depending on the seasons and relies on many biotic and abiotic factors that also condition the development of the shell and the growth of limpet. This approach represents a good means for environmental evaluation that could be used in biomonitoring programs to indicate the impact of pollution in the short and long term.

  • Biodiversity Journal, 11 (2): 351-358

    Ikram Bentata-Keddar, Sihem Abid-Kachour, Mohammed Bouderbala & Salim Mouffok
    Reproduction and growth of Axillary seabream Pagellus acarne (Risso, 1827) (Perciformes Sparidae) from the Western Algerian coasts
    https://doi.org/10.31396/Biodiv.Jour.2020.11.2.351.358

    ABSTRACT
    Pagellus acarne (Risso, 1827) (Perciformes Sparidae) represents an important component of Algerian fishery catch. Reproduction and growth parameter of this species are studied during 13 months, from fish catched from western Algerian coasts from December 2015 to December 2016. The sex-ratio (F:M) of the population studied is 1:1.56 and is in favor of male. The reproductive season extends between late spring and autumn. The resting period occurs in winter. Length at first maturity is estimated at 18.63 cm and 16.95 cm for females and males respectively. The length-weight relationship obtained is TW=0.009TL3.086 (R²=0.983). The Von Bertalanffy growth equation parameters are K=0.41, L∞=29.97, t0 =-0.34 and the Φ’=2.57.

  • Biodiversity Journal, 11 (1): 045-056

    Mediani Lynda, Chahrour Faycal, Dermeche Saliha & Bouderbala Mohamed
    Physiological Indices and Nutritive Values of the Sea Urchin Paracentrotus lividus (Lamarck, 1816) (Echinodermata Echinoidea) of the Algerian West Coast
    https://doi.org/10.31396/Biodiv.Jour.2020.11.1.45.56

    ABSTRACT
    Seasonal variation in the physiological indices and biochemical composition of the sea urchin Paracentrotus lividus (Lamarck, 1816) (Echinodermata Echinoidea) from the west coast of Algeria were studied between March 2016 and February 2017 from three stations of different nature and geographical position: Sidi Lakhdar (S1), Cap Carbon (S2), and Benisaf harbor (S3). Two spawning period occurred in spring and autumn, resulting in a fall in gonad indices to a low level with values between 2.14 and 3.65%. The seawater temperature in the three sampling stations revealed that the latter had a spawning rate at 9–15 °C in spring and 24 and 11 °C in autumn corresponding to the two peaks of spawning. The biochemical composition of the gonads protein contents, carbohydrates and lipids were recorded with a high percentage for proteins between (25.80 and 45.23%) followed by that of lipids (9.21 and 14.40%) and finally carbohydrates (3.49 and 7.39%). In accordance with the gonad cycle, sea urchin lipids and proteins show a marked seasonal variation with a decrease in their percentages during the spawning period. Protein levels had an inverse profile with carbohydrates, with their values at a minimum when carbohydrates were at their maximum. The profile of the total components in the gut content is almost the same as in the gonads with minus values. A relationship has been found between the biochemical components of the gonads and the digestive tract during gametogenesis, the latter seems to be an organ that tends to store nutrients, indicating that populations of sea urchin P. lividus are in good nutritional conditions.

  • Biodiversity Journal, 10 (4): 343-352

    Aouicha Haddou-Dekhir, Yacine Boutiba, Sihem Abid-Kachour, Fatima Zohra Khelil-Radji & Mohamed Bouderbala
    The benthic stands of the soft and rocky substrates of the Paloma Island, Algeria
    https://doi.org/10.31396/Biodiv.Jour.2019.10.4.343.352

    ABSTRACT
    The Oran coastal zone (Algeria) is distinguished by a remarkable wealth of habitat and species (Posidonia meadow, coralligenous groupers, and endemic seaweed). This work has allowed us to inventory and identify one hundred (100) macrobenthic species of soft substrates and 65 macrobenthic species of rocky substrates. The contents of the different grain size fractions show a homogeneity between the four stations with a trimodal sand dominated by coarse sand (diameter = 0.08–10 mm). The distribution of these species was mapped using the System of Geographic Information (GIS). Finally, the computation of the Shannon-Wiener (H) and Simpson (Si) indices of the rocky and soft substrates of this study area reveal an average ecological richness with a high biological diversity. It is necessary to undertake annual monitoring of macrobenthos through a wider investigation of several sites and stations in a longitudinal and vertical distribution. The “overall biological quality” index will be calculated and refined in order to rank the different sites by establishing specific in- dices for each site.

  • Biodiversity Journal, 10 (3): 185-194

    Mouloud Benabdi, Lalla A. T. Cherif-Louazani, Alae Eddine Belmahi, Samir Grimes, Yassine G.E. Khames, Billel Boufekane, Salim Mouffok & Mohamed Bouderbala
    Morphometric data and allometric relationships of the gorgonian Eunicella singularis (Esper, 1791) (Anthozoa Gorgoniidae) of Paloma Island, Algeria
    https://doi.org/10.31396/Biodiv.Jour.2019.10.3.185.194

    ABSTRACT
    The gorgonian Eunicella singularis (Esper, 1791) (Anthozoa Gorgoniidae) is abundant on rocky bottoms at Paloma Island (Algeria) in the south-western of the Mediterranean basin. In this study area, 150 gorgonian colonies of E. singularis were collected randomly using SCUBA diving and the following morphometric macro-features were measured (maximum height, maximum width, total branch length, rectangular surface area, height to width ratio and dry weight). Allometric growth was examined using the relationships between the dry weight and the five morphometric macro-features. The power equation of the simple allometry applied was y=axb and the parameters of the linear regression a and b were estimated after the logarithmic transformation log (y)=log( a)+ b*log(x). The allometric relationships between the dry weight and the morphometric macro-features studied show that the growth of the gorgonian E. singularis in the study area is correlated positively and significantly with the five macro-features and that both the macro-features total branch length and the maximum width are the most appropriate parameter applied to the gorgonian E. singularis growth study.

  • Biodiversity Journal, 10 (2): 159-172

    Yamina Tahri, Saliha Dermeche, Fayçal Chahrour & Mohammed Bouderbala
    The reproduction cycle of the sea cucumber Holothuria (Holothuria) tubulosa Gmelin, 1791 (Echinodermata Holo-thuroidea Holothuriidae) in Oran coast, Algeria
    https://doi.org/10.31396/Biodiv.Jour.2019.10.2.159.172

    ABSTRACT
    The aim of this paper is to present an analytical study of gonad index (GI) and repletion index (RI) of Holothuria (Holothuria) tubulosa Gmelin, 1791 (Echinodermata Holothuroidea Holothuriidae). The study is based on biomonitoring data collected from February 2014 to January 2015 in the Oran coast. The gonad index of Holothuria tubulosa is analyzed to show the reproductive cycle and its relationship to environmental parameter conditions. Samples of 15 to 20 individuals were collected monthly at three stations on the Oran coast (La Madrague, Cap Carbon, and Ain Franin). The sex ratio of all sampling was found as (female:male) 0.8:1.2 with no significant difference between sites (X2= 2.18 ; df=4 ; p>0.05) and is also not significant regarding the seasons (spring, summer, autumn, winter) (X2= 3.03 ; df=6 ; p>0.05). Sea cucumber reproduction occurred in September at Cap Carbon and Ain Franin with values of Gonad index (GI) that are 0.33± 0.52 % and 0.22± 0.52 % respectively. At the La Madrague site, the spawning occurred in October with a value of GI of 1.49±2.03 %. It was observed that seawater temperature has a positive correlation with Gonad index (GI) and no correlation with Repletion index (RI).

  • Biodiversity Journal, 10 (2): 151-158

    Sihem Abid-Kachour, Omar Rouane Hacene, Salim Mouffok & Mohammed Bouderbala
    Digenean parasites in two congeneric sparid fish and of commercial importance, Pagellus erythrinus (Linnaeus, 1758) and Pagellus acarne (Risso, 1827), from the western Mediterranean coast of Algeria
    https://doi.org/10.31396/Biodiv.Jour.2019.10.2.151.158

    ABSTRACT
    The investigation into the digenean fauna of two congeneric sparid fishes (Perciformes Sparidae), Pagellus erythrinus (Linnaeus, 1758) and Pagellus acarne (Risso, 1827), was carried out in the Algerian coasts (Western Mediterranean). These fishes of commercial importance represent an important biological resource for the human population along the Mediterranean coasts. However, the data on their digenean parasites in Algeria are incomplete and the aim of this study is to provide new data on the diversity and species composition of digeneans from these hosts. A total of 240 fishs (120 of each species) were collected from Oran (North-western Algeria) during 12 months between September 2016 and August 2017. Eleven species of digeneans were found in the two fish hosts: (i) Lepocreadium pegorchis (Lepocreadiidae); Lepocreadium album (Lepocreadiidae); Holorchis pychnoporus (Lepocreadiidae); Holorchis spp (Lepocreadiidae); Hemiurus comminus (Hemiuridae); Hemiurus luehei (Hemiuridae); Lepidauchen stenostoma (Acanthocolpidae) and Pachycreadium carnosum (Opecoelidae); Macvicaria crassigula (Opecoelidae) in Pagellus erythrinus; (ii) Lepocreadium pegorchis (Lepocreadiidae); Macvicaria crassigula (Opecoelidae); Zoogonus spp (Zoogonidae) and Hemiurus communis (Hemiuridae) in Pagellus acarne. In the evaluation of the dynamics of the epidemiological index of the community of digenean parasites, two species of fish show seasonal variations. Furthermore, higher prevalence of infestation were registered during the summer season for the Opecaelidae family in the two hosts.

  • Biodiversity Journal, 10 (2): 109-116

    Djamel Bekrattou, Salim Mouffok, Noureddine Benaissa & Mohammed Bouderbala
    Fishing of Norway lobster Nephrops norvegicus (Linnaeus, 1758) (Decapoda Nephropidae) in Algerian western waters
    https://doi.org/10.31396/Biodiv.Jour.2019.10.2.109.116

    ABSTRACT
    A frequently occurring species with high market value in Algeria, the Norway lobster Nephrops norvegicus (Linnaeus, 1758) (Decapoda Nephropidae) has attracted the interest of many professional fishermen. Fishery for this species has been growing rapidly in recent years. In this work, we collected data on the eco-biology, production, and monitoring of fishing effort and calculated yields. Our main objective is to provide an introduction to the fishing activity of this crustacean decapod in western Algeria, to provide a database for further studies of the lobster stock, and to contribute to the improvement and development of lobster fishery in Algeria.