The Phylogenetic Relationships of “Predatory Water-Fleas” (Cladocera: Onychopoda, Haplopoda) Inferred from 12S rDNA

Richter, Stefan; Braband, Anke; Аладин, Н. В.; Scholtz, Gerhard

doi:10.1006/mpev.2000.0901

Cited by 19 publications

(15 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous molecular analyses have resulted in monophyly of Gymnomera (Schwenk et al, 1998;Richter et al, 2001;Braband et al, 2002;Swain and Taylor, 2003;deWaard et al, 2006; Stenderup , 2006) but also the Eucladocera concept has found support in one molecular study (Spears and Abele, 2000). Interestingly enough, 19 of our 20 combined analyses (as well as the morphological analysis) support the monophyly of Gymnomera.…”

Section: Discussionsupporting

confidence: 81%

Phylogeny of Branchiopoda (Crustacea) based on a combined analysis of morphological data and six molecular loci

2007

Self Cite

View full text Add to dashboard Cite

The phylogenetic relationships of branchiopod crustaceans have been in the focus of a number of recent morphological and molecular systematic studies. Although agreeing in some respects, major differences remain. We analyzed molecular sequences and morphological characters for 43 branchiopods and two outgroups. The branchiopod terminals comprise all eight ''orders''. The molecular data include six loci: two nuclear ribosomal genes (18S rRNA, 28S rRNA), two mitochondrial ribosomal genes (12S rRNA, 16S rRNA), one nuclear protein coding gene (elongation factor 1a), and one mitochondrial protein coding gene (cytochrome c oxidase subunit I). A total of 65 morphological characters were analyzed dealing with different aspects of branchiopod morphology, including internal anatomy and larval characters. The morphological analysis resulted in a monophyletic Phyllopoda, with Notostraca as the sister group to the remaining taxa supporting the Diplostraca concept (''Conchostraca'' + Cladocera). ''Conchostraca'' is not supported but Cyclestheria hislopi is the sister group to Cladocera (constituting together Cladoceromorpha) and Spinicaudata is closer to Cladoceromorpha than to Laevicaudata. Cladocera is supported as monophyletic. The combined analysis under equal weighting gave results in some respects similar to the morphological analysis. Within Phyllopoda, Cladocera, Cladoceromorpha and Spinicaudata + Cladoceromorpha are monophyletic. The combined analysis is different from the morphological analysis with respect to the position of Notostraca and Laevicaudata. Here, Laevicaudata is the sister group to the remaining Phyllopoda and Notostraca is sister group to Spinicaudata and Cladoceromorpha. A sensitivity analysis using 20 different parameter sets (different insertion-deletion [indel] ⁄ substitution and transversion ⁄ transition ratios) show the monophyly of Anostraca, Notostraca, Laevicaudata, Spinicaudata, Cladoceromorpha, Cladocera, and within Cladocera, of Onychopoda and Gymnomera under all or almost all (i.e., 19 of 20) parameter sets. Analyses with an indel-to-transversion ratio up to 2 result in monophyletic Phyllopoda, with Laevicaudata as sister group to the remaining Phyllopoda and with Spinicaudata and Cladoceromorpha as sister groups. Almost all analyses (including those with higher indel weights) result in the same topology when only ingroup taxa are considered.Ó The Willi Hennig Society 2007.Branchiopoda comprise approximately 1180 described species of mainly freshwater dwelling crustaceans (Adamowicz and Purvis, 2005). It includes taxa with a general, archaic morphology very similar to that of some Cambrian and Devonian crustacean fossils (Anostraca, Notostraca, Spinicaudata), as well as taxa that are highly specialized for predatory, scraping, parasitism, and advanced filtration such as the water fleas (Scourfield

show abstract

Section: Discussionsupporting

confidence: 81%

Phylogeny of Branchiopoda (Crustacea) based on a combined analysis of morphological data and six molecular loci

2007

Self Cite

View full text Add to dashboard Cite

show abstract

“…Our evidence suggests a grouping of water flea orders that lack an ephippium or resting egg case (Ctenopoda, Haplopoda, Onychopoda). Some molecular analyses have found modest or weak support for this association (Taylor et al 1999 Richter et al 2001;Braband et al 2002), but there has been no shared derived morphological character proposed for this group. The lack of an ephippium is probably a poor character for this group because the state of nonephippial diapausing eggs is ancestral.…”

Section: Discussion (A) Evolution Of Thoracic Limb Specializationmentioning

confidence: 98%

“…There is now strong evidence that the water fleas (Cladocera) are a monophyletic group (Taylor et al 1999;Spears & Abele 2000;Braband et al 2002), but no robust evidence exists for the among-order relations of the water fleas. There have been many efforts to use molecular data to recover relationships (Hanner & Fugate 1997;Schwenk et al 1998;Taylor et al 1999;Spears & Abele 2000;Richter et al 2001;Braband et al 2002), but a lack of reliability in the tree has been found in each case. There are many possible explanations for weak support (Sanderson & Shaffer 2002), but one possible explanation for these difficulties is that the Cladocera were part of an ancient rapid radiation (Kerfoot & Lynch 1987) leaving a weak signal at the ordinal level and much evolutionary time to erode the signal with noise (homoplasy).…”

Section: Introductionmentioning

confidence: 99%

Structural rRNA characters support monophyly of raptorial limbs and paraphyly of limb specialization in water fleas

Swain

Taylor

2003

Proc. R. Soc. Lond. B

View full text Add to dashboard Cite

The evolutionary success of arthropods has been attributed partly to the diversity of their limb morphologies. Large morphological diversity and increased specialization are observed in water flea (Cladocera) limbs, but it is unclear whether the increased limb specialization in different cladoceran orders is the result of shared ancestry or parallel evolution. We inferred a robust among-order cladoceran phylogeny using small-subunit and large-subunit rRNA nuclear gene sequences, signature sequence regions, novel stemloops and secondary structure morphometrics to assess the phylogenetic distribution of limb specialization. The sequence-based and structural rRNA morphometric phylogenies were congruent and suggested monophyly of orders with raptorial limbs, but paraphyly of orders with reduced numbers of specialized limbs. These results highlight the utility of complex molecular structural characters in resolving ancient rapid radiations.

show abstract

“…Our work examines the tempo of morphological and genetic changes in the predatory cladocerans based on a molecular phylogenetic approach in an attempt to reconcile the competing hypotheses regarding their evolution. In contrast to the earlier molecular study on this group, which relied on the analysis of a single mitochondrial gene (Richter et al ., 2001), the present results are based on a study of both a nuclear gene (18S) and three mitochondrial genes (COI, 12S, 16S).…”

Section: Ages and Rates Of Diversification In The Onychopodsmentioning

confidence: 99%

Phylogeny and adaptive radiation in the Onychopoda (Crustacea, Cladocera): evidence from multiple gene sequences

Cristescu

Hebert

2002

Journal of Evolutionary Biology

View full text Add to dashboard Cite

Members of the order Cladocera show remarkable morphological and ecological diversity. One of the most spectacular adaptive radiations in this group has involved species of the suborder Onychopoda, which have adopted a novel feeding strategy, predation, and have colonized habitats with a broad range of salinities. In order to evaluate the origins and systematics of this group, we derived a molecular phylogeny for its three component families including nine of 10 recognized genera based on three mitochondrial (mt) gene sequences: cytochrome c oxidase subunit I (COI), the ribosomal small and large subunits (12S and 16S) and one nuclear gene sequence: the small ribosomal subunit (18S). Maximum-parsimony, maximum-likelihood and neighbour-joining phylogenetic analyses were largely congruent, supporting the monophyly of the suborder and each of its families. Comparative analyses of data based on total evidence and the conditional combination of the ribosomal genes produced relatively congruent patterns of phylogenetic affinity. By contrast, analyses of single gene results were inconsistent in recovering the monophyletic groups identified by the multigene analyses. Based on the reconstructed phylogeny, we discriminate among the existing hypotheses regarding the evolutionary history of the onychopods. We identify a prolonged episode of speciation from the Miocene to the Pleistocene with two pulses of diversification. We discuss our results with reference to the geological history of the Ponto-Caspian basin, the region which fostered the onychopod radiation.

show abstract

The Phylogenetic Relationships of “Predatory Water-Fleas” (Cladocera: Onychopoda, Haplopoda) Inferred from 12S rDNA

Cited by 19 publications

References 27 publications

Phylogeny of Branchiopoda (Crustacea) based on a combined analysis of morphological data and six molecular loci

Phylogeny of Branchiopoda (Crustacea) based on a combined analysis of morphological data and six molecular loci

Structural rRNA characters support monophyly of raptorial limbs and paraphyly of limb specialization in water fleas

Phylogeny and adaptive radiation in the Onychopoda (Crustacea, Cladocera): evidence from multiple gene sequences

Contact Info

Product

Resources

About