16 research outputs found
Diversity of digeneans parasitizing Mullus barbatus and Mullus surmuletus (Teleostean, Mullidae) off the coast of Algerian
Mullus barbatus and Mullus surmuletus (Perciformes, Mullidae) are a common marine teleost of great commercial importance in many coastal areas. We studied the communities of Digenea species in two congeneric Mullidae hosts collected on the Algerian coast in the southern Mediterranean. Five hundred and seven M. barbatus and one hundred and twenty-three M. surmuletus were examined. During this work, we collected six species of parasitic Digenea which are related to five different families: Hemiuridae represented by Lecithocladium excisum, Fellodistomidae by Proctoeces maculatus and which is reported only from M. surmuletus, Derogenidae by Derogenes latus, Monorchiidae by Proctotrema bacilliovatum and finally Opecoelidae represented by two species Opecoeloides furcatus and Poracanthium furcatum. A critical systematic study revealed an apparent overlap in morphometric data of the six Digenean species from two host fishes. Therefore, the two mullet species are likely to share the same parasite community, and the stenoxenic specificity of Digenean parasites is briefly argued. Prevalence values showed that in the midst of six hundred and thirty Mullidae, one hundred and ninety-six are parasitized (31.11 %). Statistical tests showed that the most parasitized fish hosts are M. surmuletus with a high prevalence value (47.15 %), and on the other hand, they proved that small fish are more parasitized than others. Also, the lack of homogeneity between the different parasites is reported. We also note that the use of factorial correspondence analysis (FCA) allowed us, for the first time to highlight the distribution of the parasite species identified in the two mullets according to the seasons
Acanthobothrium minus n. sp. (Tetraphyllidea : Onchobotriidae) parasite de Raja asterias (Elasmobranchii : Rajidae) en Méditerranée
Parmi les Cestodes Tetraphyllidea parasites de la valvule spirale de Raja asterias Delaroche pĂȘchĂ©es sur les cĂŽtes de lâAlgĂ©rie, nous avons rĂ©coltĂ© un Onchobothriidae du genre Acanthobothrium diffĂ©rent des Acanthobothrium signalĂ©s chez les Rajidae de la MĂ©diterranĂ© et des cĂŽtes atlantiques europĂ©ennes. Ce Cestode est caractĂ©risĂ© par une trĂšs petite taille (1-2 mm), le nombre des segments du strobile (4-8), la morphologie et la taille des crochets, le nombre rĂ©duit (17-25) de testicules et par la morphologie de lâovaire. La combinaison de ces caractĂšres situe cet Acanthobothrium dans le groupe â2â selon Ghoshroy & Caira (2001). Cet Onchobothriidae est dĂ©crit comme Acanthobothrium minus n. sp
Acanthobothrium minus
Parmi les Cestodes Tetraphyllidea parasites de la valvule spirale de Raja asterias Delaroche pĂȘchĂ©es sur les cĂŽtes de lâAlgĂ©rie, nous avons rĂ©coltĂ© un Onchobothriidae du genre Acanthobothrium diffĂ©rent des Acanthobothrium signalĂ©s chez les Rajidae de la MĂ©diterranĂ© et des cĂŽtes atlantiques europĂ©ennes. Ce Cestode est caractĂ©risĂ© par une trĂšs petite taille (1-2 mm), le nombre des segments du strobile (4-8), la morphologie et la taille des crochets, le nombre rĂ©duit (17-25) de testicules et par la morphologie de lâovaire. La combinaison de ces caractĂšres situe cet Acanthobothrium dans le groupe â2â selon Ghoshroy & Caira (2001). Cet Onchobothriidae est dĂ©crit comme Acanthobothrium minus n. sp
n. sp. (Tetraphyllidea : Onchobotriidae) parasite de
Parmi les Cestodes Tetraphyllidea parasites de la valvule spirale de Raja asterias Delaroche pĂȘchĂ©es sur les cĂŽtes de lâAlgĂ©rie, nous avons rĂ©coltĂ© un Onchobothriidae du genre Acanthobothrium diffĂ©rent des Acanthobothrium signalĂ©s chez les Rajidae de la MĂ©diterranĂ© et des cĂŽtes atlantiques europĂ©ennes. Ce Cestode est caractĂ©risĂ© par une trĂšs petite taille (1-2 mm), le nombre des segments du strobile (4-8), la morphologie et la taille des crochets, le nombre rĂ©duit (17-25) de testicules et par la morphologie de lâovaire. La combinaison de ces caractĂšres situe cet Acanthobothrium dans le groupe â2â selon Ghoshroy & Caira (2001). Cet Onchobothriidae est dĂ©crit comme Acanthobothrium minus n. sp
A new tetraphyllidean genus and species, Caulopatera pagei n. g., n. sp (Tetraphyllidea: Phyllobothriidae), from the grey carpetshark Chiloscyllium punctatum Muller & Henle (Orectolobiformes: Hemiscylliidae)
A new genus and species of tetraphyllidean cestode, Caulopatera pagei n. g., n. sp., is described from the grey carpetshark Chiloscyllium punctatum MĂŒller & Henle in Moreton Bay, Australia. The new genus is placed in the Phyllobothriidae, subfamily Phyllobothriinae. Caulopatera n. g. is distinct from all other phyllobothriine genera in having stalked, circular, non-loculate bothridia that lack an apical sucker, testes that are restricted to the region anterior to the cirrus-sac and circum-medullary vitelline follicles. The new genus most closely resembles Carpobothrium Shipley & Hornell, 1906, with which it shares non-loculate, stalked, unhooked bothridia without an accessory sucker and testes that are entirely anterior to the cirrus-sac, but differs from it in that it lacks a slit-like opening in each bothridium and flaps surrounding the opening. The possession of bothridial stalks is consistent with two cestode orders, the Tetraphyllidea and the Rhinebothriidea. The morphology of the bothridial stalks is consistent with other tetraphyllidean genera, in that Caulopatera possesses triangular bothridial stalks surrounding the back of the bothridia, indicating that it belongs in the Tetraphyllidea senso stricto, rather than in the recently recognised Rhinebothriidea. © 2010 Springer Science+Business Media B.V