Phylogeography of the rock-pool copepod Tigriopus brevicornis (Harpacticoida) in the northern North Atlantic, and its relationship to other species of the genus

Handschumacher, Lisa; Steinarsdóttir, María Björk; Edmands, Suzanne; Ingólfsson, Agnar

doi:10.1007/s00227-010-1415-7

Cited by 23 publications

(23 citation statements)

References 28 publications

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“…Dethier, ), and yet long‐distance colonization clearly occurs, as populations have apparently accomplished rapid post‐glacial expansion (Edmands, ), and colonized remote outcrops and offshore islands (Burton, ; Edmands, ). The congener T. brevicornis shows similar patterns of restricted dispersal and yet has apparently colonized large geographical areas within the past 12,000–15,000 years and has even traversed the Atlantic (Handschumacher et al ., ). It seems unlikely that limited dispersal capacity is preventing geographical overlap between the N/I and S compatibility groups in T. californicus .…”

Section: Discussionmentioning

confidence: 97%

Reproductive and phylogenetic divergence of tidepool copepod populations across a narrow geographical boundary in Baja California

Peterson

Kubow

Connolly

et al. 2013

Journal of Biogeography

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Aim Previous work on the tidepool copepod Tigriopus californicus revealed a curious case of incipient speciation at the southern end of the species' range in Baja California, Mexico. The present study expands on the geography of this pattern and tests for congruence between reproductive and phylogenetic patterns.Location The Pacific coast of North America, from central Baja California to south-eastern Alaska (27-57°N), including the full range of T. californicus.Methods Primary techniques included mating experiments (> 4000 crosses), phylogeny reconstruction (mitochondrial cytochrome c oxidase subunit I) and screening of single nucleotide polymorphisms (SNPs, 42 loci). Analyses used > 8000 copepods for the mating experiments, 86 copepods for the phylogeny and 41 copepods for the SNP assays. Phylogenies were constructed using Bayesian, maximum likelihood and maximum parsimony methods. ResultsPopulations were found to fall into three reproductive groups: northern and southern groups that were reproductively isolated from each other, and an intermediate group that could serve as a conduit for gene flow. The northern and intermediate populations fell into one clade while all southern populations fell into a second clade. These two clades are now separated by less than 12 km at latitude 29.35°N. Nuclear SNP data for a subset of locations confirmed striking divergence between populations on either side of this boundary. The second (southern) clade was further subdivided into two clades separated by the lagoon region of Guerrero Negro (latitude 28°N).Main conclusions Reproductive assays and molecular data (both mitochondrial and nuclear) reveal a sharp break at 29.35°N, a region with no obvious barriers to dispersal, with no evidence for mixing across this narrow transition zone. Results also showed a milder break at the Guerrero Negro Lagoon (28°N), a location where breaks have been reported for other taxa.

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Section: Discussionmentioning

confidence: 97%

Reproductive and phylogenetic divergence of tidepool copepod populations across a narrow geographical boundary in Baja California

Peterson

Kubow

Connolly

et al. 2013

Journal of Biogeography

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“…() for Cletocamptus ; Edmands (); Handschumacher et al . () for Tigriopus ], whereas others showed a weak or no spatial structure [e.g. Schizas et al .…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, some other studies on harpacticoids showed a strong spatial structure in genetic data [e.g. Schizas et al (1999) for Microarthridion; Rocha-Olivares et al (2001) for Cletocamptus; Edmands (2001); Handschumacher et al (2010) for Tigriopus], whereas others showed a weak or no spatial structure [e.g. Schizas et al (2002) for Microarthridion or Denis et al (2009) for Tigriopus].…”

Section: Genetic Analysismentioning

confidence: 99%

Cryptic diversity of the ‘cosmopolitan’ harpacticoid copepod Nannopus palustris: genetic and morphological evidence

et al. 2012

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Nannopus palustris Brady, 1880 is a free-living widely distributed harpacticoid copepod, which has been formerly assumed to be a single, cosmopolitan but highly variable species. We compared several geographically distant N. palustris populations in terms of their morphology and genetics. Populations from the White Sea (WS), the North Sea (NS), the Black Sea (BS) and two sympatric morphs from South Carolina, USA (SC notched and SC straight morphs), were considered. The NS, BS and to a lesser extent SC notched specimens were morphologically similar and partly coincided to the 'canonical' description of the species. By contrast, WS population showed remarkable anatomical and morphometric peculiarities that correspond to some earlier descriptions. Genetic analyses of mitochondrial (cytochrome b) and nuclear (28S rDNA) genes demonstrated the significant distinctness among WS, both SC and (NS+BS) populations, the latter two being genetically indistinguishable. Concordance between mitochondrial and nuclear gene trees and morphological data supports that N. palustris is in fact composed of several pseudo-sibling species, which are genetically and morphologically divergent. Neither correlation between genetic divergence and geographical distance nor significant intrapopulation diversity was found for these species. Taxonomic status, distribution and phylogenetic relationships of the species within the Nannopus genus need to be reconsidered. A further subdivision of species complexes might have important implications for the analysis of biodiversity of benthic copepods and consequently for the interpretation of their (species-specific) ecological function.

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“…George and Tiltack 2009, Handschuhmacher et al 2010, Menzel et al 2011, they often cause certain scepticism if looking at the species level. In particular, since molecular methods have been employed for taxonomic, systematic and biogeographic (= phylogeographic) research (e.g.…”

Section: Key To Species Of Paralaophontodes (Females)mentioning

confidence: 99%

Phylogeny of the taxon Paralaophontodes Lang (Copepoda, Harpacticoida, Laophontodinae), including species descriptions, chorological remarks, and a key to species

George¹

2017

ZSE

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A detailed phylogenetic analysis of the taxon Paralaophontodes Lang (Copepoda, Harpacticoida, Laophontodinae Lang) based on morphological characters is presented. The monophylum Paralaophontodes is supported by 16 unambiguous autapomorphies such as the presence of characteristic dorsal processes on cephalothorax and body somites, a 5-segmented male antennule, the loss of the syncoxal seta on the maxilliped, and the endopodal strengthening of the first swimming leg. The corresponding extensive phylogenetic evaluation includes the description of Paralaophontodes anjae sp. n. from a beach on Chiloé Island (Chile), the re-description of Laophontodes armatus Lang, and the re-establishment of Paralaophontodes robustus (Bŏzić), the displacement of Laophontodes armatus, L. hedgpethi Lang and L. psammophilus Soyer to Paralaophontodes, a discussion on relationships within that taxon, remarks on its geographical distribution, and a key to the species.

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Phylogeography of the rock-pool copepod Tigriopus brevicornis (Harpacticoida) in the northern North Atlantic, and its relationship to other species of the genus

Cited by 23 publications

References 28 publications

Reproductive and phylogenetic divergence of tidepool copepod populations across a narrow geographical boundary in Baja California

Reproductive and phylogenetic divergence of tidepool copepod populations across a narrow geographical boundary in Baja California

Cryptic diversity of the ‘cosmopolitan’ harpacticoid copepod Nannopus palustris: genetic and morphological evidence

Phylogeny of the taxon Paralaophontodes Lang (Copepoda, Harpacticoida, Laophontodinae), including species descriptions, chorological remarks, and a key to species

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