NDLI: Cryptic mitochondrial lineages in the widespread pycnogonid Colossendeis megalonyx Hoek, 1881 from Antarctic and Subantarctic waters

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Reproductive cycle and reproductive output of the sea urchin Loxechinus albus (Echinodermata: Echinoidea) from Beagle Channel, Tierra del Fuego, Argentina

Cryptic mitochondrial lineages in the widespread pycnogonid Colossendeis megalonyx Hoek, 1881 from Antarctic and Subantarctic waters

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Detection of zooplankton items in the stomach and gut content of larval krill, Euphausia superba, using a molecular approach

Acknowledgement to Referees 2008–2009

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Cryptic mitochondrial lineages in the widespread pycnogonid Colossendeis megalonyx Hoek, 1881 from Antarctic and Subantarctic waters

Content Provider	Springer Nature Link
Author	Krabbe, Kathrin Leese, Florian Mayer, Christoph Tollrian, Ralph Held, Christoph
Copyright Year	2009
Abstract	Colossendeis megalonyx Hoek, 1881 is a widespread and abundant pycnogonid in the Southern Ocean which has also been reported from the South Atlantic and South Pacific Oceans. Its strictly benthic lifestyle is expected to promote genetic differentiation among populations and ultimately facilitate speciation. On the other hand, the reported eurybathy and unknown larval stages of this species may allow Colossendeis megalonyx to maintain genetic continuity between isolated shallow-water habitats by active dispersal through the deep sea or by passive rafting on floating substrates. Thus, it remains unknown whether and to which extent geographically separated populations of Colossendeis megalonyx maintain gene flow in the Southern Ocean. We sampled 96 specimens of Colossendeis megalonyx from three stations in the Atlantic Sector of the Southern Ocean and one station from the South American continental shelf (Burdwood Bank). The genetic structure of nominal Colossendeis megalonyx as well as its phylogenetic position within the genus Colossendeis were assessed using a fragment of the cytochrome c oxidase subunit 1 gene. Our data strongly support that nominal Colossendeis megalonyx consists of at least five cryptic and one pseudocryptic mitochondrial lineages, four of which appear to be geographically restricted. Two lineages occurred at locations separated by more than 1,000 km in the Antarctic, thus indicating high levels of gene flow or recent colonization. No haplotype sharing across the Polar Frontal Zone was observed. Our results strongly suggest that cryptic speciation occurred within the genus Colossendeis. The wide biogeographic distribution range of Colossendeis megalonyx and perhaps that of other Antarctic pycnogonids should therefore be regarded with caution.
Starting Page	281
Ending Page	292
Page Count	12
File Format	PDF
ISSN	07224060
Journal	Polar Biology
Volume Number	33
Issue Number	3
e-ISSN	14322056
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-08-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Antarctic benthos Pycnogonida Circumpolar distribution Cryptic species Phylogeography Deep sea Colossendeidae Zoology Ecology Plant Sciences Microbiology Oceanography
Content Type	Text
Resource Type	Article
Subject	Agricultural and Biological Sciences

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Erratum to: Cryptic mitochondrial lineages in the widespread pycnogonid Colossendeis megalonyx Hoek, 1881 from Antarctic and Subantarctic waters

Evidence from morphological and genetic data confirms that Colossendeis tenera Hilton, 1943 (Arthropoda: Pycnogonida), does not belong to the Colossendeis megalonyx Hoek, 1881 complex

Evidence from morphological and genetic data confirms that Colossendeis tenera Hilton, 1943 (Arthropoda: Pycnogonida), does not belong to the Colossendeis megalonyx Hoek, 1881 complex

An unusual giant pycnogonid (Pycnogonida-Colossendeidae) Decolopoda qasimi sp. nov. from Antarctic waters

A scanning-electron microscopic study of Dickdellia labioflecta (Dell, 1990) (Gastropoda, Littorinoidea) on Colossendeis megalonyx megalonyx Fry and Hedgpeth, 1969 (Pycnogonida, Colossendeidae): a test for ectoparasitism

A new species of Colossendeis (Pycnogonida: Colossendeidae) together with records from Australian and New Zealand waters

Basal articulation of the palps and ovigers in Antarctic Colossendeis (Pycnogonida; Colossendeidae)

A new species of colossendeis (pycnogonida: colossendeidae) together with records from australian and new zealand waters.

First record of deep-sea gigantic pycnogonid Colossendeis colossea Wilson, 1881 from the Western Indian Ocean

Cryptic mitochondrial lineages in the widespread pycnogonid Colossendeis megalonyx Hoek, 1881 from Antarctic and Subantarctic waters

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Erratum to: Cryptic mitochondrial lineages in the widespread pycnogonid Colossendeis megalonyx Hoek, 1881 from Antarctic and Subantarctic waters

Evidence from morphological and genetic data confirms that Colossendeis tenera Hilton, 1943 (Arthropoda: Pycnogonida), does not belong to the Colossendeis megalonyx Hoek, 1881 complex

Evidence from morphological and genetic data confirms that Colossendeis tenera Hilton, 1943 (Arthropoda: Pycnogonida), does not belong to the Colossendeis megalonyx Hoek, 1881 complex

An unusual giant pycnogonid (Pycnogonida-Colossendeidae) Decolopoda qasimi sp. nov. from Antarctic waters

A scanning-electron microscopic study of Dickdellia labioflecta (Dell, 1990) (Gastropoda, Littorinoidea) on Colossendeis megalonyx megalonyx Fry and Hedgpeth, 1969 (Pycnogonida, Colossendeidae): a test for ectoparasitism

A new species of Colossendeis (Pycnogonida: Colossendeidae) together with records from Australian and New Zealand waters

Basal articulation of the palps and ovigers in Antarctic Colossendeis (Pycnogonida; Colossendeidae)

A new species of colossendeis (pycnogonida: colossendeidae) together with records from australian and new zealand waters.

First record of deep-sea gigantic pycnogonid Colossendeis colossea Wilson, 1881 from the Western Indian Ocean

Cryptic mitochondrial lineages in the widespread pycnogonid Colossendeis megalonyx Hoek, 1881 from Antarctic and Subantarctic waters