Genetic and morphological variation in Echinorhynchus gadi Zoega in Müller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L.
Abstract Previous studies have shown considerable variability in morphological features and the existence of genetically distinct sibling species in the acanthocephalan Echinorhynchus gadi Zoega in Müller, 1776. The aim of the present study was to follow up and extend those earlier studies by using...
Published in: | Journal of Helminthology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2011
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0022149x10000891 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X10000891 |
id |
crcambridgeupr:10.1017/s0022149x10000891 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0022149x10000891 2024-06-16T07:38:34+00:00 Genetic and morphological variation in Echinorhynchus gadi Zoega in Müller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L. Sobecka, E. Szostakowska, B. MacKenzie, K. Hemmingsen, W. Prajsnar, S. Eydal, M. 2011 http://dx.doi.org/10.1017/s0022149x10000891 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X10000891 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of Helminthology volume 86, issue 1, page 16-25 ISSN 0022-149X 1475-2697 journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0022149x10000891 2024-05-22T12:56:12Z Abstract Previous studies have shown considerable variability in morphological features and the existence of genetically distinct sibling species in the acanthocephalan Echinorhynchus gadi Zoega in Müller, 1776. The aim of the present study was to follow up and extend those earlier studies by using a combination of DNA analysis and morphometrics to investigate differences between samples of E. gadi from Atlantic cod Gadus morhua L. caught at five fishing grounds in the Baltic Sea and three in different parts of the North Atlantic. Twelve morphological features were measured in 431 specimens of E. gadi , 99 individuals were studied by polymerase chain reaction-restriction fragment length polymorphosm (PCR-RFLP), and selected PCR products were sequenced. The molecular analyses showed the nucleotide sequences of E. gadi rDNA from cod caught at all the sampling sites to be identical. The comparative morphological study, in contrast, revealed significant differences between samples of E. gadi from different sampling sites and showed the separation of E. gadi into two groups corresponding approximately to the systematic classification of cod into the two subspecies, Atlantic G. morhua morhua and Baltic G. morhua callarias . The E. gadi infrapopulation size had a significant effect on some of the morphological features. The results are discussed in relation to cod population biology, the hydrography of the study area and the history of the Baltic Sea formation. Article in Journal/Newspaper atlantic cod Gadus morhua North Atlantic Cambridge University Press Journal of Helminthology 86 1 16 25 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Previous studies have shown considerable variability in morphological features and the existence of genetically distinct sibling species in the acanthocephalan Echinorhynchus gadi Zoega in Müller, 1776. The aim of the present study was to follow up and extend those earlier studies by using a combination of DNA analysis and morphometrics to investigate differences between samples of E. gadi from Atlantic cod Gadus morhua L. caught at five fishing grounds in the Baltic Sea and three in different parts of the North Atlantic. Twelve morphological features were measured in 431 specimens of E. gadi , 99 individuals were studied by polymerase chain reaction-restriction fragment length polymorphosm (PCR-RFLP), and selected PCR products were sequenced. The molecular analyses showed the nucleotide sequences of E. gadi rDNA from cod caught at all the sampling sites to be identical. The comparative morphological study, in contrast, revealed significant differences between samples of E. gadi from different sampling sites and showed the separation of E. gadi into two groups corresponding approximately to the systematic classification of cod into the two subspecies, Atlantic G. morhua morhua and Baltic G. morhua callarias . The E. gadi infrapopulation size had a significant effect on some of the morphological features. The results are discussed in relation to cod population biology, the hydrography of the study area and the history of the Baltic Sea formation. |
format |
Article in Journal/Newspaper |
author |
Sobecka, E. Szostakowska, B. MacKenzie, K. Hemmingsen, W. Prajsnar, S. Eydal, M. |
spellingShingle |
Sobecka, E. Szostakowska, B. MacKenzie, K. Hemmingsen, W. Prajsnar, S. Eydal, M. Genetic and morphological variation in Echinorhynchus gadi Zoega in Müller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L. |
author_facet |
Sobecka, E. Szostakowska, B. MacKenzie, K. Hemmingsen, W. Prajsnar, S. Eydal, M. |
author_sort |
Sobecka, E. |
title |
Genetic and morphological variation in Echinorhynchus gadi Zoega in Müller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L. |
title_short |
Genetic and morphological variation in Echinorhynchus gadi Zoega in Müller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L. |
title_full |
Genetic and morphological variation in Echinorhynchus gadi Zoega in Müller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L. |
title_fullStr |
Genetic and morphological variation in Echinorhynchus gadi Zoega in Müller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L. |
title_full_unstemmed |
Genetic and morphological variation in Echinorhynchus gadi Zoega in Müller, 1776 (Acanthocephala: Echinorhynchidae) from Atlantic cod Gadus morhua L. |
title_sort |
genetic and morphological variation in echinorhynchus gadi zoega in müller, 1776 (acanthocephala: echinorhynchidae) from atlantic cod gadus morhua l. |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0022149x10000891 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X10000891 |
genre |
atlantic cod Gadus morhua North Atlantic |
genre_facet |
atlantic cod Gadus morhua North Atlantic |
op_source |
Journal of Helminthology volume 86, issue 1, page 16-25 ISSN 0022-149X 1475-2697 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0022149x10000891 |
container_title |
Journal of Helminthology |
container_volume |
86 |
container_issue |
1 |
container_start_page |
16 |
op_container_end_page |
25 |
_version_ |
1802005248355598336 |