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Start Over Creator Martin, Coralie

1. A new species of Litomosoides (Nematoda: Onchocercidae), parasite of Nectomys palmipes (Rodentia: Cricetidae: Sigmodontinae) from Venezuela: description, molecular evidence, Wolbachia pipientis screening

Creator:
Guerrero, Ricardo, Bain, Odile, Martin, Coralie, and Barbuto, Michela
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Litomosoides, Onchocercidae, integrative taxonomy, and Wolbachia screening
Language:
English
Description:
The onchocercid filaria Litomosoides taylori sp. n. is described from the sigmodontine cricetid Nectomys palmipes Allen et Chapman in northeast Venezuela. A voucher specimen of the new species was used for molecular analysis of the coxI and 12S rDNA genes, and screened for the presence of the endobacterium Wolbachia pipientis. Litomosoides taylori belongs to the ''sigmodontis group'' of Litomosoides and a combination of characters can be used to distinguish it from the remaining 18 species forming this group. Among the five Nectomys species, all living near running water, N. squamipes also harbours Litomosoides species, L. khonae in Brazil and L. navonae in Argentina. These three Litomosoides species of the ''sigmodontis group'' do not share any particular characters. Gene sequences of L. taylori differ from those of the five Litomosoides species available, the three of the ''carinii group'' being the most distant. The new species harbours W. pipientis, which is concurrent with the great majority of Litomosoides species screened to date.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. The development and fine structure of Lankesterella cf. dicroglossi (Apicomplexa: Lankesterellidae) infecting frogs in Niger, West Africa

Creator:
Paperna, Ilan and Martin, Coralie
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Lankesterella cf. dicroglossi, infection, ultrastructure, frog, Hoplobatrachus occipitalis, Niger, and Africa
Language:
English
Description:
One of four Hoplobatrachus occipitalis (Günther, 1859) frogs received from Niger, West Africa was heavily infected with Lankesterella blood and pre-erythrocytic stages. Infected blood and tissues from this frog were force-fed to the remaining three frogs. Two survived to necropsy on days 14 and 27 post-feeding and were found to be infected with gamogonic and oogonic stages, respectively. The source of infection is inconclusive, as a natural origin cannot be excluded. Microgamont, macrogamont, oocyst and sporozoite structure and fine structure are described and found to conform in general, but not in detail, to previous descriptions. Gamonts and oocysts occurred predominantly in the liver and spleen. Walled sporulating oocysts were situated within macrophage centres. Oocysts yielded a progeny of 32 sporozoites. Pre-erythrocytic sporozoites developed within expanded inclusions, within their host cell, from which they massively invaded the liver and spleen, and to a lesser extent the lungs and kidneys. Sporozoites occurred in a parasitophorous vacuole in the erythrocytes. Conspecificity with Lankesterella dicroglossi Paperna et Ogara, 1996 reported from the same host species in Kenya remains uncertain due to several structural and developmental differences.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public