Abstract
Inventorying of anisakid nematode biodiversity is the discovering, surveying, quantifying and mapping of species, populations and their genetic diversity and variability. This aim, however, is compromised if discrimination of anisakid taxa relies solely on morphological features. Therefore, the accurate detection and delimitation of cryptic anisakid species requires molecular-based assessments. This, in turn, permits elucidation of patterns and process in their evolution and ecology, including biogeography, host-parasite association and co-evolution. In addition, a true picture of anisakids and their genetic diversity facilitates understanding of their temporal and spatial distribution also related to their hosts demographic changes and marine ecosystem food webs.
This review represents an inventorying of the biodiversity, at species and gene level, of those anisakid species so far discovered belonging to the genera Anisakis, Pseudoterranova and Contracaecum, from the Austral Region, including: (1) taxa recognized as “biological species” based on the application of different molecular genetic markers; (2) current molecular/genetic approaches to identify them at any life-history stage; (3) ecological data relating to the geographical distribution, definitive host-association and host-preferences; (4) estimates of genetic variability values inferred from nuclear and mitochondrial genes, as a possible indicator of the integrity of marine food webs; (5) data so far known concerning the possible zoonotic role of those anisakid species to humans.
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Acknowledgements
Part of the research reported in this review on anisakid nematodes from Austral Region was funded by MIUR-PNRA (Piano Nazionale Ricerche in Antartide) 2013 AZ01/09, and by a Research Grant from “Sapienza- University of Rome” (year 2015).
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Mattiucci, S., Paoletti, M., Cipriani, P., Webb, S.C., Timi, J.T., Nascetti, G. (2017). Inventorying Biodiversity of Anisakid Nematodes from the Austral Region: A Hotspot of Genetic Diversity?. In: Klimpel, S., Kuhn, T., Mehlhorn, H. (eds) Biodiversity and Evolution of Parasitic Life in the Southern Ocean. Parasitology Research Monographs, vol 9. Springer, Cham. https://doi.org/10.1007/978-3-319-46343-8_7
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