A new species of Anisakis Dujardin, 1845 (Nematoda, Anisakidae) from beaked whales (Ziphiidae): allozyme and morphological evidence |
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| Authors: | Lia Paggi Giuseppe Nascetti Steve C Webb Simonetta Mattiucci Rossella Cianchi Luciano Bullini |
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| Institution: | (1) Institute of Parasitology, University of Rome  La Sapienza , Piazzale Aldo Moro, 5, I-00185 Rome, Italy;(2) Department of Environmental Sciences, Tuscia University, Via S. Camillo De Lellis, I-01100 Viterbo, Italy;(3) Zoology Department, University of Cape Town, Rondebosch, 7700, Republic of South Africa;(4) Department of Genetics and Molecular Biology, University of Rome La Sapienza, Via Lancisi, 29, I-00161 Rome, Italy |
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| Abstract: | Larvae and adults of Anisakis, recovered from the beaked whales Mesoplodon layardii and Ziphius cavirostris from the Mediterranean Sea and South African waters, were analysed morphologically and by molecular markers (allozymes). A new Anisakis species was identified, showing fixed allele differences at a number of loci from the other Anisakis spp. tested (A. simplex complex, A. physeteris). The lack of hybrid or recombinant genotypes in mixed infections with A. pegreffii, A. simplex C and A. physeteris, as well as the high values of genetic distance (average DNei = 1.65 from the members of the A. simplex complex, and DNei = 3.09 from A. physeteris) showed that the new species is reproductively isolated. This new Anisakis species is morphologically different from the other Anisakis retained by Davey (1971) as either good species or species inquirendae. The name Anisakis ziphidarum n. sp. is proposed for the new species. |
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