The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
N. Filippousis - One of the best experts on this subject based on the ideXlab platform.
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Use of length-frequency data in the estimation of growth parameters of three Mediterranean fish species: bogue (Boops Boops L.), picarel (Spicara smaris L.) and horse mackerel (Trachurus trachurus L.)
Fisheries Research, 1991Co-Authors: A. Tsangridis, N. FilippousisAbstract:Abstract Bogue (Boops Boops L.), picarel (Spicara smaris L.) and horse mackerel (Trachurus trachurus L.) are inadequately studied and literature data on their growth parameters are very limited, although they are common and commercially important species in the Mediterranean. Two newly developed methods, Projection Matrix Analysis and Length Composition Analysis, for obtaining growth parameters from length-frequency data have been applied to length data of these species.
Rachid Amara - One of the best experts on this subject based on the ideXlab platform.
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Use of otolith-shape analysis for stock discrimination of Boops Boops along the Algerian coast (southwestern Mediterranean Sea)
African Journal of Marine Science, 2017Co-Authors: Djamila Ider, Zouhir Ramdane, K Mahé, Jl Duffour, Mahmoud Bacha, Rachid AmaraAbstract:Otolith-shape analysis was examined to determine its utility for biological stock identification of the bogue Boops Boops along the Algerian coast of the Mediterranean Sea. The outlines of 179 sagittal otolith pairs from fish collected at three locations (Oran, Bejaia and Annaba) between 2013 and 2016 were digitised and analysed for shape variation by elliptical Fourier analysis. Potential confounding sources of variation (fish length, age and sex, and left or right otolith position) were examined and accounted for in the analyses before interpretation of spatial differences in distribution of the stock. Redundancy analysis showed a significant difference between the left and right otoliths. No difference was correlated with sex and age, but fish length and sampling location had a significant effect on otolith shape. Differences in otolith shape between fish from the three locations (a span of approximately 1 000 km) were not large enough to support the concept of separate biological stocks of B. Boops al...
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Nematodes parasitizing Trachurus trachurus (L.) and Boops Boops (L.) from Algeria.
Parasitology research, 2015Co-Authors: Keltoum Ichalal, Zouhir Ramdane, Djamila Ider, Mohammed Kacher, Mokrane Iguer-ouada, Jean-paul Trilles, Luci Courcot, Rachid AmaraAbstract:A total of 455 Boops Boops (Linnaeus, 1758) and 953 Trachurus trachurus Linnaeus, 1758 from the east coast of Algeria were examined for their parasitic Nematoda. Two hundred ninety-five specimens of larval stages L3 and L4 were collected from the peritoneal cavity of these two examined fishes. Photonic and scanning electronic microscopy (SEM) studies were performed on these larvae specimens in order to characterize their morphology. Two different species of Nematoda (Anisikidae) were identified: Anisakis simplex (Rudolphi, 1809) and Hysterothylacium aduncum (Rudolphi, 1802). These two parasitic species were reported for the first time on T. trachurus and B. Boops from the eastern coast of Algeria. These parasites were attached on different organs in the abdominal cavity (particularly on ovaries and testes). The infestation rate changed according to the month and the host size. The parasitism did not show a significant negative impact on the condition of the examined fishes.
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Metazoan ectoparasites of two teleost fish, Boops Boops (L.) and Mullus barbatus barbatus L. from Algerian coast: diversity, parasitological index and impact of parasitism
Cybium, 2013Co-Authors: Zouhir Ramdane, Jean-paul Trilles, Kelig Mahe, Rachid AmaraAbstract:A total of 664 Boops Boops (Linnaeus, 1758) and 823 Mullus barbatus barbatus Linnaeus, 1758 from the east coast of Algeria were examined to study their parasitofauna. We collected eleven parasitic species (two monogeneans, three copepods, five isopods and one Branchiura) from B. Boops, and four parasitic species (two copepods and two isopods) from M. barbatus barbatus. Five species were reported for the first time in Algeria. The site of attachment on the host and the degree of specificity varied according to the parasite species while the infestation rate changed according to the month and the host size. The parasitism did not show a significant negative impact on the biological parameters of the fish host.
Ahmet Raif Eryaşar - One of the best experts on this subject based on the ideXlab platform.
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Selectivity of commercial and alternative codends for Bogue (Boops Boops) and Common sole (Solea solea) in Northeastern Mediterranean
Ege Journal of Fisheries and Aquatic Sciences, 2017Co-Authors: Ahmet Raif EryaşarAbstract:Bu calismada ticari el ormesi ve gevsek dugumlu torba ile uc farkli alternatif fabrikasyon torbalarin (40 mm karegoz, 44 mm ve 50 mm baklava gozlu) boy secicilikleri kupes ( Boops Boops ) ve dil baligi ( Solea solea ) icin karsilastirilmistir. Cekimler Mersin Korfezi’nde 10 Ocak - 16 Aralik 2011 tarihleri arasinda ortu torba yontemi kullanilarak gerceklestirilmistir. Sonuclar alternatif fabrikasyon torbalarin kupes icin yeterli secicilige sahip oldugunu bununla beraber dil baligi icin test edilen 4 torbanin da yasal boyun altindaki bireyleri kacirmada yetersiz kaldigini gostermektedir.
A. Tsangridis - One of the best experts on this subject based on the ideXlab platform.
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Use of length-frequency data in the estimation of growth parameters of three Mediterranean fish species: bogue (Boops Boops L.), picarel (Spicara smaris L.) and horse mackerel (Trachurus trachurus L.)
Fisheries Research, 1991Co-Authors: A. Tsangridis, N. FilippousisAbstract:Abstract Bogue (Boops Boops L.), picarel (Spicara smaris L.) and horse mackerel (Trachurus trachurus L.) are inadequately studied and literature data on their growth parameters are very limited, although they are common and commercially important species in the Mediterranean. Two newly developed methods, Projection Matrix Analysis and Length Composition Analysis, for obtaining growth parameters from length-frequency data have been applied to length data of these species.
Djamila Ider - One of the best experts on this subject based on the ideXlab platform.
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Use of otolith-shape analysis for stock discrimination of Boops Boops along the Algerian coast (southwestern Mediterranean Sea)
African Journal of Marine Science, 2017Co-Authors: Djamila Ider, Zouhir Ramdane, K Mahé, Jl Duffour, Mahmoud Bacha, Rachid AmaraAbstract:Otolith-shape analysis was examined to determine its utility for biological stock identification of the bogue Boops Boops along the Algerian coast of the Mediterranean Sea. The outlines of 179 sagittal otolith pairs from fish collected at three locations (Oran, Bejaia and Annaba) between 2013 and 2016 were digitised and analysed for shape variation by elliptical Fourier analysis. Potential confounding sources of variation (fish length, age and sex, and left or right otolith position) were examined and accounted for in the analyses before interpretation of spatial differences in distribution of the stock. Redundancy analysis showed a significant difference between the left and right otoliths. No difference was correlated with sex and age, but fish length and sampling location had a significant effect on otolith shape. Differences in otolith shape between fish from the three locations (a span of approximately 1 000 km) were not large enough to support the concept of separate biological stocks of B. Boops al...
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Nematodes parasitizing Trachurus trachurus (L.) and Boops Boops (L.) from Algeria.
Parasitology research, 2015Co-Authors: Keltoum Ichalal, Zouhir Ramdane, Djamila Ider, Mohammed Kacher, Mokrane Iguer-ouada, Jean-paul Trilles, Luci Courcot, Rachid AmaraAbstract:A total of 455 Boops Boops (Linnaeus, 1758) and 953 Trachurus trachurus Linnaeus, 1758 from the east coast of Algeria were examined for their parasitic Nematoda. Two hundred ninety-five specimens of larval stages L3 and L4 were collected from the peritoneal cavity of these two examined fishes. Photonic and scanning electronic microscopy (SEM) studies were performed on these larvae specimens in order to characterize their morphology. Two different species of Nematoda (Anisikidae) were identified: Anisakis simplex (Rudolphi, 1809) and Hysterothylacium aduncum (Rudolphi, 1802). These two parasitic species were reported for the first time on T. trachurus and B. Boops from the eastern coast of Algeria. These parasites were attached on different organs in the abdominal cavity (particularly on ovaries and testes). The infestation rate changed according to the month and the host size. The parasitism did not show a significant negative impact on the condition of the examined fishes.