P
P. Orecchia
Researcher at Sapienza University of Rome
Publications - 14
Citations - 776
P. Orecchia is an academic researcher from Sapienza University of Rome. The author has contributed to research in topics: Anisakis simplex & Anisakidae. The author has an hindex of 9, co-authored 14 publications receiving 748 citations.
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Genetic and ecological data on the Anisakis simplex complex, with evidence for a new species (Nematoda, Ascaridoidea, Anisakidae).
Simonetta Mattiucci,Giuseppe Nascetti,R Clanchi,Lia Paggi,Paola Arduino,L Margolis,J. Brattey,Stephen C. Webb,Stefano D'Amelio,P. Orecchia,Luciano Bullini +10 more
TL;DR: A new distinct gene pool was detected, showing different alleles with respect to A. simplex sensu stricto and Anisakis pegreffii, widely extending the geographic ranges and the number of hosts of these 2 species.
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Electrophoretic studies on the Anisakis simplex complex (Ascaridida:Anisakidae) from the Mediterranean and North-East Atlantic.
TL;DR: The genetic variation of the sibling species Anisakis simplex A and A. simplex B was investigated by electrophoretic analysis of 22 gene-enzyme systems and several paratenic hosts and one cetacean definitive host are identified for each of the two species.
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Genetic evidence for three species within Pseudoterranova decipiens (Nematoda, Ascaridida, Ascaridoidea) in the North Atlantic and Norwegian and Barents Seas.
Lia Paggi,Giuseppe Nascetti,R. Cianchi,P. Orecchia,Simonetta Mattiucci,Stefano D'Amelio,Bjørn Berland,J. Brattey,J.W. Smith,Luciano Bullini +9 more
TL;DR: Genetic variation of 1017 specimens of codworm, Pseudoterranova decipiens, collected from fish and seals at 23 sampling locations in the North Atlantic and Norwegian and Barents Seas, was analysed on the basis of 16 enzyme loci, indicating high levels of gene flow within each of the three species.
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Genetic variation of ascaridoid worms with different life cycles.
TL;DR: Evidence is given that species whose life cycle is carried out on a single homeothermic host show lower genetic variability than do those needing both poikilothermic and homeotherMic hosts, and natural selection is suggested to be the major factor promoting and maintaining the different patterns of genetic variability found in these parasites.
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Genetic structure of Anisakis physeteris, and its differentiation from the Anisakis simplex complex (Ascaridida: Anisakidae)
TL;DR: The assignation of A. physeteris and the A. simplex complex to two distinct subgenera, Skrjabinisakis and Anisakis, as proposed by Mosgovoy on a morphological basis appears to be fully justified according to genetic data.