GENETIC-EVIDENCE FOR 3 SPECIES WITHIN PSEUDOTERRANOVA-DECIPIENS (NEMATODA, ASCARIDIDA, ASCARIDOIDEA) IN THE NORTH-ATLANTIC AND NORWEGIAN AND BARENTS SEAS
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. Three reproductively isolated species, provisionally designated P. deci...
Published in: | International Journal for Parasitology |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PERGAMON-ELSEVIER SCIENCE LTD
1991
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Subjects: | |
Online Access: | http://hdl.handle.net/11573/409025 https://doi.org/10.1016/0020-7519(91)90010-5 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=A1991FN86000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0025859523&partnerID=65&md5=c036da4498d0b272339e6849b9810508 |
id |
ftunivromairis:oai:iris.uniroma1.it:11573/409025 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
morphology pseudoterranova-decipien norwegian sea north atlantic p-decipiens a b and c genetic variation biochemical taxonomy geographical distribution multilocus electrophoresi host specie barents sea codworms |
spellingShingle |
morphology pseudoterranova-decipien norwegian sea north atlantic p-decipiens a b and c genetic variation biochemical taxonomy geographical distribution multilocus electrophoresi host specie barents sea codworms PAGGI, Lia NASCETTI, Giuseppe CIANCHI, Maria Rossella MATTIUCCI, Simonetta D'AMELIO, Stefano BULLINI, Luciano P. Orecchia B. Berland J. Brattey J. W. Smith GENETIC-EVIDENCE FOR 3 SPECIES WITHIN PSEUDOTERRANOVA-DECIPIENS (NEMATODA, ASCARIDIDA, ASCARIDOIDEA) IN THE NORTH-ATLANTIC AND NORWEGIAN AND BARENTS SEAS |
topic_facet |
morphology pseudoterranova-decipien norwegian sea north atlantic p-decipiens a b and c genetic variation biochemical taxonomy geographical distribution multilocus electrophoresi host specie barents sea codworms |
description |
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. Three reproductively isolated species, provisionally designated P. decipiens A, B and C, were detected, showing distinct alleles at the following loci: Mdh-1, 6Pgdh, Np, Pgm, Est-2 (between species A and B); Mdh-3, 6Pgdh, Np, Sod-1, Adk, Pgm, Est-2, Mpi(between A and C); Mdh-1, Mdh-3, Sod-1, Adk, Pgm, Est-2, Mpi(between B and C). One F1 hybrid was observed between P. decipiens A and B, but this apparently does not lead to any gene exchange between the two species, which do not show any evidence of introgression. No hybrids or introgressed individuals were observed between P. decipiens C and either A or B. Genetic distances among conspecific populations were low (average Nei's D 0.001-0.005), even though they were collected thousands of kilometres apart, indicating high levels of gene flow within each of the three species. The values of Nei's index D were 0.44 between P. decipiens A and B, 0.57 between B and C, and 0.79 between A and C. Estimated evolutionary divergence times, using Nei's formula, range from 2 to 4 million years. Differences between P. decipiens A, B and C were also found with respect to genetic variability, morphology, geographical distribution and hosts. Mean heterozygosity values of 0.08, 0.05 and 0.02 were obtained for P. decipiens A, B and C, respectively. Preliminary morphological examination of adult males, previously identified by multilocus electrophoresis, revealed differences in the relative size and pattern of caudal papillae. P. decipiens B is widespread in the study area, whereas P. decipiens A was found only in the North-East Atlantic and Norwegian Sea. In this area P. decipiens A is most common in the grey seal, Halichoerus grypus, while the common seal, Phoca vitulina, is the main host for P. decipiens B. In Canadian Atlantic waters, where P. decipiens A ... |
author2 |
Paggi, Lia Nascetti, Giuseppe Cianchi, Maria Rossella P., Orecchia Mattiucci, Simonetta D'Amelio, Stefano B., Berland J., Brattey J. W., Smith Bullini, Luciano |
format |
Article in Journal/Newspaper |
author |
PAGGI, Lia NASCETTI, Giuseppe CIANCHI, Maria Rossella MATTIUCCI, Simonetta D'AMELIO, Stefano BULLINI, Luciano P. Orecchia B. Berland J. Brattey J. W. Smith |
author_facet |
PAGGI, Lia NASCETTI, Giuseppe CIANCHI, Maria Rossella MATTIUCCI, Simonetta D'AMELIO, Stefano BULLINI, Luciano P. Orecchia B. Berland J. Brattey J. W. Smith |
author_sort |
PAGGI, Lia |
title |
GENETIC-EVIDENCE FOR 3 SPECIES WITHIN PSEUDOTERRANOVA-DECIPIENS (NEMATODA, ASCARIDIDA, ASCARIDOIDEA) IN THE NORTH-ATLANTIC AND NORWEGIAN AND BARENTS SEAS |
title_short |
GENETIC-EVIDENCE FOR 3 SPECIES WITHIN PSEUDOTERRANOVA-DECIPIENS (NEMATODA, ASCARIDIDA, ASCARIDOIDEA) IN THE NORTH-ATLANTIC AND NORWEGIAN AND BARENTS SEAS |
title_full |
GENETIC-EVIDENCE FOR 3 SPECIES WITHIN PSEUDOTERRANOVA-DECIPIENS (NEMATODA, ASCARIDIDA, ASCARIDOIDEA) IN THE NORTH-ATLANTIC AND NORWEGIAN AND BARENTS SEAS |
title_fullStr |
GENETIC-EVIDENCE FOR 3 SPECIES WITHIN PSEUDOTERRANOVA-DECIPIENS (NEMATODA, ASCARIDIDA, ASCARIDOIDEA) IN THE NORTH-ATLANTIC AND NORWEGIAN AND BARENTS SEAS |
title_full_unstemmed |
GENETIC-EVIDENCE FOR 3 SPECIES WITHIN PSEUDOTERRANOVA-DECIPIENS (NEMATODA, ASCARIDIDA, ASCARIDOIDEA) IN THE NORTH-ATLANTIC AND NORWEGIAN AND BARENTS SEAS |
title_sort |
genetic-evidence for 3 species within pseudoterranova-decipiens (nematoda, ascaridida, ascaridoidea) in the north-atlantic and norwegian and barents seas |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
1991 |
url |
http://hdl.handle.net/11573/409025 https://doi.org/10.1016/0020-7519(91)90010-5 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=A1991FN86000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0025859523&partnerID=65&md5=c036da4498d0b272339e6849b9810508 |
geographic |
Barents Sea Norwegian Sea |
geographic_facet |
Barents Sea Norwegian Sea |
genre |
Barents Sea common seal North Atlantic North East Atlantic Norwegian Sea Phoca vitulina |
genre_facet |
Barents Sea common seal North Atlantic North East Atlantic Norwegian Sea Phoca vitulina |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/1869354 info:eu-repo/semantics/altIdentifier/wos/WOS:A1991FN86000008 volume:21 issue:2 firstpage:195 lastpage:212 numberofpages:18 journal:INTERNATIONAL JOURNAL FOR PARASITOLOGY http://hdl.handle.net/11573/409025 doi:10.1016/0020-7519(91)90010-5 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0025859523 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=A1991FN86000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0025859523&partnerID=65&md5=c036da4498d0b272339e6849b9810508 |
op_doi |
https://doi.org/10.1016/0020-7519(91)90010-5 |
container_title |
International Journal for Parasitology |
container_volume |
21 |
container_issue |
2 |
container_start_page |
195 |
op_container_end_page |
212 |
_version_ |
1796307150332493824 |
spelling |
ftunivromairis:oai:iris.uniroma1.it:11573/409025 2024-04-14T08:09:40+00:00 GENETIC-EVIDENCE FOR 3 SPECIES WITHIN PSEUDOTERRANOVA-DECIPIENS (NEMATODA, ASCARIDIDA, ASCARIDOIDEA) IN THE NORTH-ATLANTIC AND NORWEGIAN AND BARENTS SEAS PAGGI, Lia NASCETTI, Giuseppe CIANCHI, Maria Rossella MATTIUCCI, Simonetta D'AMELIO, Stefano BULLINI, Luciano P. Orecchia B. Berland J. Brattey J. W. Smith Paggi, Lia Nascetti, Giuseppe Cianchi, Maria Rossella P., Orecchia Mattiucci, Simonetta D'Amelio, Stefano B., Berland J., Brattey J. W., Smith Bullini, Luciano 1991 http://hdl.handle.net/11573/409025 https://doi.org/10.1016/0020-7519(91)90010-5 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=A1991FN86000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0025859523&partnerID=65&md5=c036da4498d0b272339e6849b9810508 eng eng PERGAMON-ELSEVIER SCIENCE LTD info:eu-repo/semantics/altIdentifier/pmid/1869354 info:eu-repo/semantics/altIdentifier/wos/WOS:A1991FN86000008 volume:21 issue:2 firstpage:195 lastpage:212 numberofpages:18 journal:INTERNATIONAL JOURNAL FOR PARASITOLOGY http://hdl.handle.net/11573/409025 doi:10.1016/0020-7519(91)90010-5 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0025859523 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=A1991FN86000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0025859523&partnerID=65&md5=c036da4498d0b272339e6849b9810508 morphology pseudoterranova-decipien norwegian sea north atlantic p-decipiens a b and c genetic variation biochemical taxonomy geographical distribution multilocus electrophoresi host specie barents sea codworms info:eu-repo/semantics/article 1991 ftunivromairis https://doi.org/10.1016/0020-7519(91)90010-5 2024-03-21T19:14:00Z 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. Three reproductively isolated species, provisionally designated P. decipiens A, B and C, were detected, showing distinct alleles at the following loci: Mdh-1, 6Pgdh, Np, Pgm, Est-2 (between species A and B); Mdh-3, 6Pgdh, Np, Sod-1, Adk, Pgm, Est-2, Mpi(between A and C); Mdh-1, Mdh-3, Sod-1, Adk, Pgm, Est-2, Mpi(between B and C). One F1 hybrid was observed between P. decipiens A and B, but this apparently does not lead to any gene exchange between the two species, which do not show any evidence of introgression. No hybrids or introgressed individuals were observed between P. decipiens C and either A or B. Genetic distances among conspecific populations were low (average Nei's D 0.001-0.005), even though they were collected thousands of kilometres apart, indicating high levels of gene flow within each of the three species. The values of Nei's index D were 0.44 between P. decipiens A and B, 0.57 between B and C, and 0.79 between A and C. Estimated evolutionary divergence times, using Nei's formula, range from 2 to 4 million years. Differences between P. decipiens A, B and C were also found with respect to genetic variability, morphology, geographical distribution and hosts. Mean heterozygosity values of 0.08, 0.05 and 0.02 were obtained for P. decipiens A, B and C, respectively. Preliminary morphological examination of adult males, previously identified by multilocus electrophoresis, revealed differences in the relative size and pattern of caudal papillae. P. decipiens B is widespread in the study area, whereas P. decipiens A was found only in the North-East Atlantic and Norwegian Sea. In this area P. decipiens A is most common in the grey seal, Halichoerus grypus, while the common seal, Phoca vitulina, is the main host for P. decipiens B. In Canadian Atlantic waters, where P. decipiens A ... Article in Journal/Newspaper Barents Sea common seal North Atlantic North East Atlantic Norwegian Sea Phoca vitulina Sapienza Università di Roma: CINECA IRIS Barents Sea Norwegian Sea International Journal for Parasitology 21 2 195 212 |