Tracking the invasive history of the green alga Codium fragile ssp. tomentosoides

Authors: Provan, J., Murphy, S. and Maggs, C.A.

Journal: Molecular Ecology

Volume: 14

Issue: 1

Pages: 189-194

ISSN: 0962-1083

DOI: 10.1111/j.1365-294X.2004.02384.x

Abstract:

The spread of nonindigenous species into new habitats is having a drastic effect on natural ecosystems and represents an increasing threat to global biodiversity. In the marine environment, where data on the movement of invasive species is scarce, the spread of alien seaweeds represents a particular problem. We have employed a combination of plastid microsatellite markers and DNA sequence data from three regions of the plastid genome to trace the invasive history of the green alga Codium fragile ssp. tomentosoides. Extremely low levels of genetic variation were detected, with only four haplotypes present in the species' native range in Japan and only two of these found in introduced populations. These invasive populations displayed a high level of geographical structuring of haplotypes, with one haplotype localized in the Mediterranean and the other found in Northwest Atlantic, northern European and South Pacific populations. Consequently, we postulate that there have been at least two separate introductions of C. fragile ssp. tomentosoides from its native range in the North Pacific.

Source: Scopus

Tracking the invasive history of the green alga Codium fragile ssp. tomentosoides.

Authors: Provan, J., Murphy, S. and Maggs, C.A.

Journal: Mol Ecol

Volume: 14

Issue: 1

Pages: 189-194

ISSN: 0962-1083

DOI: 10.1111/j.1365-294X.2004.02384.x

Abstract:

The spread of nonindigenous species into new habitats is having a drastic effect on natural ecosystems and represents an increasing threat to global biodiversity. In the marine environment, where data on the movement of invasive species is scarce, the spread of alien seaweeds represents a particular problem. We have employed a combination of plastid microsatellite markers and DNA sequence data from three regions of the plastid genome to trace the invasive history of the green alga Codium fragile ssp. tomentosoides. Extremely low levels of genetic variation were detected, with only four haplotypes present in the species' native range in Japan and only two of these found in introduced populations. These invasive populations displayed a high level of geographical structuring of haplotypes, with one haplotype localized in the Mediterranean and the other found in Northwest Atlantic, northern European and South Pacific populations. Consequently, we postulate that there have been at least two separate introductions of C. fragile ssp. tomentosoides from its native range in the North Pacific.

Source: PubMed

Tracking the invasive history of the green alga <i>Codium fragile</i> ssp <i>tomentosoides</i>

Authors: Provan, J., Murphy, S. and Maggs, C.A.

Journal: MOLECULAR ECOLOGY

Volume: 14

Issue: 1

Pages: 189-194

eISSN: 1365-294X

ISSN: 0962-1083

DOI: 10.1111/j.1365-294X.2004.02384.x

Source: Web of Science (Lite)

Tracking the invasive history of the green alga Codium fragile ssp. tomentosoides.

Authors: Provan, J., Murphy, S. and Maggs, C.A.

Journal: Molecular ecology

Volume: 14

Issue: 1

Pages: 189-194

eISSN: 1365-294X

ISSN: 0962-1083

DOI: 10.1111/j.1365-294x.2004.02384.x

Abstract:

The spread of nonindigenous species into new habitats is having a drastic effect on natural ecosystems and represents an increasing threat to global biodiversity. In the marine environment, where data on the movement of invasive species is scarce, the spread of alien seaweeds represents a particular problem. We have employed a combination of plastid microsatellite markers and DNA sequence data from three regions of the plastid genome to trace the invasive history of the green alga Codium fragile ssp. tomentosoides. Extremely low levels of genetic variation were detected, with only four haplotypes present in the species' native range in Japan and only two of these found in introduced populations. These invasive populations displayed a high level of geographical structuring of haplotypes, with one haplotype localized in the Mediterranean and the other found in Northwest Atlantic, northern European and South Pacific populations. Consequently, we postulate that there have been at least two separate introductions of C. fragile ssp. tomentosoides from its native range in the North Pacific.

Source: Europe PubMed Central