First bipolar benthic brooder

Kukliński, Piotr; Barnes, David K. A.

doi:10.3354/meps08446

Cited by 8 publications

(7 citation statements)

References 30 publications

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“…[63]), with a distribution restricted to a single pole. Based on an extensive morphological analysis, a benthic bryozoan species has been identified as a strong candidate for a bipolar distribution, however not yet confirmed by molecular evidence [64]. To our knowledge, genetically similar species in Arctic and Antarctic oceans have only been observed in bacteria and archaebacteria [65], [66] and benthic foraminifera [67].…”

Section: Discussionmentioning

confidence: 94%

Genetic and Morphological Divergences in the Cosmopolitan Deep-Sea Amphipod Eurythenes gryllus Reveal a Diverse Abyss and a Bipolar Species

et al. 2013

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Eurythenes gryllus is one of the most widespread amphipod species, occurring in every ocean with a depth range covering the bathyal, abyssal and hadal zones. Previous studies, however, indicated the existence of several genetically and morphologically divergent lineages, questioning the assumption of its cosmopolitan and eurybathic distribution. For the first time, its genetic diversity was explored at the global scale (Arctic, Atlantic, Pacific and Southern oceans) by analyzing nuclear (28S rDNA) and mitochondrial (COI, 16S rDNA) sequence data using various species delimitation methods in a phylogeographic context. Nine putative species-level clades were identified within E. gryllus. A clear distinction was observed between samples collected at bathyal versus abyssal depths, with a genetic break occurring around 3,000 m. Two bathyal and two abyssal lineages showed a widespread distribution, while five other abyssal lineages each seemed to be restricted to a single ocean basin. The observed higher diversity in the abyss compared to the bathyal zone stands in contrast to the depth-differentiation hypothesis. Our results indicate that, despite the more uniform environment of the abyss and its presumed lack of obvious isolating barriers, abyssal populations might be more likely to show population differentiation and undergo speciation events than previously assumed. Potential factors influencing species’ origins and distributions, such as hydrostatic pressure, are discussed. In addition, morphological findings coincided with the molecular clades. Of all specimens available for examination, those of the bipolar bathyal clade seemed the most similar to the ‘true’ E. gryllus. We present the first molecular evidence for a bipolar distribution in a macro-benthic deep-sea organism.

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Section: Discussionmentioning

confidence: 94%

Genetic and Morphological Divergences in the Cosmopolitan Deep-Sea Amphipod Eurythenes gryllus Reveal a Diverse Abyss and a Bipolar Species

et al. 2013

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“…(1) Strictly bipolar distribution, where related organisms are distributed in cold-temperate and cold regions of both hemispheres (Ekman 1953). This pattern is well represented among cnidarians (Stepanjants et al 2006), marine bacteria (Zeng et al 2010), bryozoans (Kuklinski and Barnes 2010), and protozoa (Darling et al 2000;Di Giuseppe et al 2013). (2) Bitemperate distribution (Hubss 1952), where related organisms are distributed in the warm-temperate regions of both hemispheres.…”

Section: Introductionmentioning

confidence: 85%

“…), marine bacteria (Zeng et al. ), bryozoans (Kuklinski and Barnes ), and protozoa (Darling et al. ; Di Giuseppe et al.…”

Section: Introductionmentioning

confidence: 99%

Scorched mussels (Brachidontesspp., Bivalvia: Mytilidae) from the tropical and warm‐temperate southwestern Atlantic: the role of the Amazon River in their speciation

Trovant

Basso

Orensanz

et al. 2016

Ecology and Evolution

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Antitropicality is a distribution pattern where closely related taxa are separated by an intertropical latitudinal gap. Two potential examples include Brachidontes darwinianus (south eastern Brazil to Uruguay), considered by some authors as a synonym of B. exustus (Gulf of Mexico and the Caribbean), and B. solisianus, distributed along the Brazilian coast with dubious records north of the intertropical zone. Using two nuclear (18S and 28S rDNA) and one mitochondrial gene (mtDNA COI), we aimed to elucidate the phylogeographic and phylogenetic relationships among the scorched mussels present in the warm‐temperate region of the southwest Atlantic. We evaluated a divergence process mediated by the tropical zone over alternative phylogeographic hypotheses. Brachidontes solisianus was closely related to B. exustus I, a species with which it exhibits an antitropical distribution. Their divergence time was approximately 2.6 Ma, consistent with the intensification of Amazon River flow. Brachidontes darwinianus, an estuarine species is shown here not to be related to this B. exustus complex. We suspect ancestral forms may have dispersed from the Caribbean to the Atlantic coast via the Trans‐Amazonian seaway (Miocene). The third species, B rodriguezii is presumed to have a long history in the region with related fossil forms going back to the Miocene. Although scorched mussels are very similar in appearance, their evolutionary histories are very different, involving major historical contingencies as the formation of the Amazon River, the Panama Isthmus, and the last marine transgression.

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“…The Arctic and Antarctic offer a unique opportunity to test amoeba species distribution/biogeography in the high Northern and Southern latitudes. They share numerous environmental characteristics which are absent in the latitudes between, of which low temperature and extreme seasonal fluctuations of light supply predominate (Barnes ; Kuklinski and Barnes ). Furthermore, some taxa are distributed in both polar zones only, thus showing an extreme disjunct distribution or so‐called bipolar distribution.…”

mentioning

confidence: 99%

Vermistella arctica n. sp. Nominates the Genus Vermistella as a Candidate for Taxon with Bipolar Distribution

Tyml

Kostka

Ditrich

et al. 2015

J Eukaryotic Microbiology

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A new amoebozoan species, Vermistella arctica n. sp., is described from marine habitats in the central part of Svalbard archipelago. This is the first report on Arctic amoebae belonging to the genus Vermistella Moran and Anderson, 2007, the type species of which was described from the opposite pole of the planet. Psychrophily proved in the new strains qualifies the genus Vermistella as a bipolar taxon. Molecular phylogenetic analyses based on 18S rDNA and actin sequences did not show any affinity of the genus Vermistella to Stygamoeba regulata ATCC(®) 50892(™) strain. A close phylogenetic relationship was found between Vermistella spp. and a sequence originating from an environmental sample from Cariaco basin, the largest marine permanently anoxic system in the world. Possible mechanisms of bipolar distribution are discussed.

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First bipolar benthic brooder

Cited by 8 publications

References 30 publications

Genetic and Morphological Divergences in the Cosmopolitan Deep-Sea Amphipod Eurythenes gryllus Reveal a Diverse Abyss and a Bipolar Species

Genetic and Morphological Divergences in the Cosmopolitan Deep-Sea Amphipod Eurythenes gryllus Reveal a Diverse Abyss and a Bipolar Species

Scorched mussels (Brachidontesspp., Bivalvia: Mytilidae) from the tropical and warm‐temperate southwestern Atlantic: the role of the Amazon River in their speciation

Vermistella arctica n. sp. Nominates the Genus Vermistella as a Candidate for Taxon with Bipolar Distribution

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