Unusual number of pectoral fin rays in an Icelandic population of threespine stickleback (Gasterosteus aculeatus) recently isolated in freshwater

Bjarni K. Kristjánsson; Skúli Skúlason; David L.G. Noakes

doi:10.1007/s10682-004-2679-5

Unusual number of pectoral fin rays in an Icelandic population of threespine stickleback (Gasterosteus aculeatus) recently isolated in freshwater

Department of Aquaculture and Fish Biology

Holar University College, Other Icelandic Research Institutions

Research output: Contribution to journal › Article › peer-review

Abstract

Threespine stickleback most often have 10 pectoral fin rays, and it seems to be a highly canalized trait. We observed an unusually high frequency of stickleback with 11 pectoral fin rays in a population recently isolated from the marine environment in a freshwater lagoon in Iceland. These new morphologies may be beneficial for the fish in the new habitat but may disappear because of strong canalizing selection for the typical 10 pectoral fin rays.

Original language	English
Pages (from-to)	379-384
Number of pages	6
Journal	Evolutionary Ecology
Volume	18
Issue number	4
DOIs	https://doi.org/10.1007/s10682-004-2679-5
Publication status	Published - Jul 2005

Bibliographical note

Funding Information: We thank G.Á. Ólafsdóttir and L. Doucette for their valuable help with field sampling. We want to thank Andrea Bergmann Halldórsdóttir for counting pectoral fin rays, and M. Bell, J. Sturlaugsson, B.R. Hansen, T. Tunney, H. Thorarensen, B. Jónsson and two anonymous referee for useful comments and discussion. The aquaculture company Hvurslax e.hf. gave permission for the sampling. The Icelandic Research Council and NSERC Canada generously funded this study. The animal care committee at Hólar College approved all sampling.

Other keywords

Divergence
Isolation
Rapid evolution

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10.1007/s10682-004-2679-5

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@article{65ce39734f7443bcbaabd00e61761431,

title = "Unusual number of pectoral fin rays in an Icelandic population of threespine stickleback (Gasterosteus aculeatus) recently isolated in freshwater",

abstract = "Threespine stickleback most often have 10 pectoral fin rays, and it seems to be a highly canalized trait. We observed an unusually high frequency of stickleback with 11 pectoral fin rays in a population recently isolated from the marine environment in a freshwater lagoon in Iceland. These new morphologies may be beneficial for the fish in the new habitat but may disappear because of strong canalizing selection for the typical 10 pectoral fin rays.",

keywords = "Divergence, Isolation, Rapid evolution",

author = "Kristj{\'a}nsson, \{Bjarni K.\} and Sk{\'u}li Sk{\'u}lason and Noakes, \{David L.G.\}",

note = "Funding Information: We thank G.{\'A}. {\'O}lafsd{\'o}ttir and L. Doucette for their valuable help with field sampling. We want to thank Andrea Bergmann Halld{\'o}rsd{\'o}ttir for counting pectoral fin rays, and M. Bell, J. Sturlaugsson, B.R. Hansen, T. Tunney, H. Thorarensen, B. J{\'o}nsson and two anonymous referee for useful comments and discussion. The aquaculture company Hvurslax e.hf. gave permission for the sampling. The Icelandic Research Council and NSERC Canada generously funded this study. The animal care committee at H{\'o}lar College approved all sampling.",

year = "2005",

month = jul,

doi = "10.1007/s10682-004-2679-5",

language = "English",

volume = "18",

pages = "379--384",

journal = "Evolutionary Ecology",

issn = "0269-7653",

publisher = "Springer Science and Business Media Deutschland GmbH",

number = "4",

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TY - JOUR

T1 - Unusual number of pectoral fin rays in an Icelandic population of threespine stickleback (Gasterosteus aculeatus) recently isolated in freshwater

AU - Kristjánsson, Bjarni K.

AU - Skúlason, Skúli

AU - Noakes, David L.G.

N1 - Funding Information: We thank G.Á. Ólafsdóttir and L. Doucette for their valuable help with field sampling. We want to thank Andrea Bergmann Halldórsdóttir for counting pectoral fin rays, and M. Bell, J. Sturlaugsson, B.R. Hansen, T. Tunney, H. Thorarensen, B. Jónsson and two anonymous referee for useful comments and discussion. The aquaculture company Hvurslax e.hf. gave permission for the sampling. The Icelandic Research Council and NSERC Canada generously funded this study. The animal care committee at Hólar College approved all sampling.

PY - 2005/7

Y1 - 2005/7

N2 - Threespine stickleback most often have 10 pectoral fin rays, and it seems to be a highly canalized trait. We observed an unusually high frequency of stickleback with 11 pectoral fin rays in a population recently isolated from the marine environment in a freshwater lagoon in Iceland. These new morphologies may be beneficial for the fish in the new habitat but may disappear because of strong canalizing selection for the typical 10 pectoral fin rays.

AB - Threespine stickleback most often have 10 pectoral fin rays, and it seems to be a highly canalized trait. We observed an unusually high frequency of stickleback with 11 pectoral fin rays in a population recently isolated from the marine environment in a freshwater lagoon in Iceland. These new morphologies may be beneficial for the fish in the new habitat but may disappear because of strong canalizing selection for the typical 10 pectoral fin rays.

KW - Divergence

KW - Isolation

KW - Rapid evolution

UR - https://www.scopus.com/pages/publications/18144429120

U2 - 10.1007/s10682-004-2679-5

DO - 10.1007/s10682-004-2679-5

M3 - Article

SN - 0269-7653

VL - 18

SP - 379

EP - 384

JO - Evolutionary Ecology

JF - Evolutionary Ecology

IS - 4

ER -

Unusual number of pectoral fin rays in an Icelandic population of threespine stickleback (Gasterosteus aculeatus) recently isolated in freshwater

Abstract

Bibliographical note

Other keywords

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