Skip Navigation

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (22)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Bucklin, A.
Right arrow Articles by Goswami, U.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Bucklin, A.
Right arrow Articles by Goswami, U.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Journal of Plankton Research Vol.22 no.7 pp.1237-1251, 2000
© Oxford University Press 2000

Population genetics of drifting (Calanus spp.) and resident (Acartia clausi) plankton in Norwegian fjords

A. Bucklin1,2, S. Kaartvedt3, M. Guarnieri1 and U. Goswami4

1 Ocean Process Analysis Laboratory and 2 Department of Zoology, University of New Hampshire, Durham, NH 03824, USA, 3 Department of Biology, University of Oslo, Oslo, Norway and 4 National Institute of Oceanography, Goa, India

Kaartvedt distinguished between drifting and resident plankton and hypothesized that the latter were distinguished by their ability to maintain their horizontal position in desired habitats (Kaartvedt, 1993). In this study, we examined the population genetic consequences of these two lifestyles for copepods in four fjords of western Norway (Lurefjorden, Masfjorden, Sognefjorden and Sørfjorden) and one fjord in eastern Norway (Oslofjorden). Based on DNA sequence variation of a region of mitochondrial 16S rRNA, we contrasted population genetic diversity and structure in drifting populations of Calanus spp. with that of resident populations of Acartia clausi. With the exception of Sørfjorden (where Calanus spp. were rare), two or three species of Calanus co-occurred in significantly different proportions in the fjords. Based on a 350 base-pair region of mitochondrial 16S rRNA, Calanus spp. varied in molecular genetic diversity, with the highest values for C.helgolandicus. There was no evidence of significant genetic structure of fjord populations for either C.finmarchicus or C.helgolandicus; the population structure of C.glacialis could not be evaluated as the species was only abundant in Lurefjorden. Acartia clausi was abundant in all five fjords sampled for this study. Molecular genetic diversity of A.clausi, based on a 220 bp region of mt 16S rRNA, was within the range of Calanus spp. values. Populations of A.clausi showed significant genetic structure (i.e. haplotype frequencies differed markedly) among the fjords. The results of this study indicated that little exchange (gene flow) occurs between populations of A.clausi in different fjords, and suggested that the populations are long-term residents of a fjord. In contrast, most Calanus spp. fjord populations may be replaced periodically, as they drift with currents flowing to and from coastal and fjord environments.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J PLANKTON RESHome page
R. R. Kirby, J. A. Lindley, and S. D. Batten
Spatial heterogeneity and genetic variation in the copepod Neocalanus cristatus along two transects in the North Pacific sampled by the Continuous Plankton Recorder
J. Plankton Res., January 1, 2007; 29(1): 97 - 106.
[Abstract] [Full Text] [PDF]


Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.