Title Effects of climatic changes on anisakid nematodes in polar regions
Author Rokicki, J.
Author Affil Rokicki, J., University of Gdansk, Department of Invertebrate Zoology, Gdansk, Poland
Source MERGE, edited by H. Kanda, P. Convey, T. Naganuma, W. Vincent and A. Wilmotte. Polar Science, 3(3), p.197-201, . Publisher: Elsevier for National Institute of Polar Research, Japan, Tokyo, Japan. ISSN: 1873- 9652
Publication Date Nov. 2009
Notes In English. Based on Publisher- supplied data Ant. Acc. No: 89936
Index Terms Antarctica; Arctic Ocean; Arctic region; polar regions; Southern Ocean; biogeography; climate change; climate effects; ecology; habitat; International Polar Year 2007-08; Invertebrata; IPY 2007-08 Education, Outreach and Communication Publications; IPY 2007-08 Research Publications; subantarctic regions; subarctic regions; Vermes
Abstract Anisakid nematodes are common in Antarctic, sub-antarctic, and Arctic areas. Current distributional knowledge of anisakids in the polar regions is reviewed. Climatic variables influence the occurrence and abundance of anisakids, directly influencing their free-living larval stages and also indirectly influencing their predominantly invertebrate (but also vertebrate) hosts. As these parasites can also be pathogenic for humans, the paucity of information available is a source of additional hazard. As fish are a major human dietary component in Arctic and Antarctic areas, and are often eaten without heat processing, a high risk of infection by anisakid larvae might be expected. The present level of knowledge, particularly relating to anisakid larval stages present in fishes, is far from satisfactory. Preliminary molecular studies have revealed the presence of species complexes. Contemporary climate warming is modifying the marine environment and may result in an extension of time during which anisakid eggs can persist and hatch, and of the time period during which newly hatched larvae remain viable. As a result there may be an increase in the extent of anisakid distribution. Continued warming will modify the composition of the parasitic nematode fauna of marine animals, due to changes in feeding habits, as the warming of the sea and any localised reduction in salinity (from freshwater runoff) can be expected to bring about changes in the species composition of pelagic and benthic invertebrates.
URL http://hdl.handle.net/10.1016/j.polar.2009.06.002
Publication Type journal article
Record ID 304823