Remarks on the Echiniscus viridis group, with the description of a new species (Tardigrada, Echiniscidae)

Pilato, Giovanni; Fontoura, Paulo; Lisi, Oscar

doi:10.4081/jlimnol.2007.s1.33

Cited by 24 publications

(28 citation statements)

References 7 publications

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“…By contrast, other classical groups based also on cuticle designs (presented in Table and Fig. : bigranulatus , blumi‐canadensis , merokensis , arctomys , and viridis ; Ramazzotti & Maucci, ; Peluffo et al ., ; Pilato et al ., , ) did not find statistical or phylogenetic support from any of the genetic markers used, whether analysed individually or in combination. The parsimony network constructed with the 28S rRNA data or combining 18S and 28S rRNA sequences (networks not shown) did not yield any interpretable groups as specimens appeared mixed, and with no statistical (AMOVA) support ( P > 0.05) in any case.…”

Section: Resultsmentioning

confidence: 85%

“…Contrary to the conflict found among the dorsal plate configuration in echiniscid genera, and molecular phylogenetic data (using 18S rRNA and 28S rRNA), cuticular design seems to contain evolutionary signal within Echiniscus . However, the traditional cuticular design groups (see Ramazzotti & Maucci, ; Peluffo et al ., ; Pilato et al ., , ), i.e. bigranulatus , blumi‐canadensis , merokensis , arctomys , and viridis (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The Echiniscus sequences studied included up to 11 species (newly sequenced and from GenBank; Table ), collected in localities around the world, and including five types of cuticle traditionally used to cluster Echiniscus species (Ramazzotti & Maucci, ; Peluffo, Moly de Peluffo & Rocha, ; Pilato, Fontoura & Lisi, ; Pilato et al ., ) (Table ; Fig. ): bigranulatus (Fig.…”

Section: Methodsmentioning

confidence: 99%

“… The five types of cuticular designs traditionally used to group E chiniscus species and the recently described genus D iploechiniscus ( R amazzotti & M aucci, ; P eluffo et al ., ; P ilato et al ., , ): A, bigranulatus ; B, blumi‐canadensis ; C, merokensis ; D, arctomys ; E, viridis ; F, D . oihonnae .…”

Section: Methodsmentioning

confidence: 99%

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Congruence between molecular phylogeny and cuticular design in Echiniscoidea (Tardigrada, Heterotardigrada)

et al. 2013

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Although morphological characters distinguishing echiniscid genera and species are well understood, the phylogenetic relationships of these taxa are not well established. We thus investigated the phylogeny of Echiniscidae, assessed the monophyly of Echiniscus, and explored the value of cuticular ornamentation as a phylogenetic character within Echiniscus. To do this, DNA was extracted from single individuals for multiple Echiniscus species, and 18S and 28S rRNA gene fragments were sequenced. Each specimen was photographed, and published in an open database prior to DNA extraction, to make morphological evidence available for future inquiries. An updated phylogeny of the class Heterotardigrada is provided, and conflict between the obtained molecular trees and the distribution of dorsal plates among echiniscid genera is highlighted. The monophyly of Echiniscus was corroborated by the data, with the recent genus Diploechiniscus inferred as its sister group, and Testechiniscus as the sister group of this assemblage. Three groups that closely correspond to specific types of cuticular design in Echiniscus have been found with a parsimony network constructed with 18S rRNA data.

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Section: Resultsmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Congruence between molecular phylogeny and cuticular design in Echiniscoidea (Tardigrada, Heterotardigrada)

et al. 2013

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“…Nor were we able to find type material in any other museums. For this reason when we analysed the group viridis and described E. viridianus (Pilato et al 2007), we based our considerations and comparisons on the description by Murray, who was an exceptional observer. During the publishing of the paper mentioned above, we learned that some specimens attributed to E. viridis by the late Robert O. Schuster, and collected in the Hawaiian Islands, are in the Bohart Museum of Entomology of the University of California (Davis, United States) (Diane Nelson and Nigel Marley pers.…”

Section: Introductionmentioning

confidence: 99%

New description ofEchiniscus viridisMurray, 1910 and remarks on theviridisgroup

Pilato¹,

Fontoura²,

Lisi

2008

New Zealand Journal of Zoology

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The type material of Echiniscus viridis Murray, 1910 is probably lost. Here we give a new description of this species from two specimens from the type locality (Hawaiian Islands) deposited in the collection of the late Robert O. Schuster (Bohart Museum of Entomology of California, Davis, United States). The validity of the other species of the group viridis is confirmed, and the need to confirm the records of E. viridis from geographical areas different from the type locality is stressed.

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Novel integrative data for Indomalayan echiniscids (Heterotardigrada): new species and old problems

Gąsiorek,

Michalczyk

2024

Org Divers Evol

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The Malay Archipelago comprises thousands of islands that house a variety of biomes, from tropical rainforests of Borneo, Sumatra and Celebes to the Lesser Sundas deciduous forests. In this paper, we present an extensive genetic and morphological dataset for the genus Kristenseniscus, demonstrating the presence of the walteri complex that contains several pseudocryptic species. One of them, Kristenseniscus exanthema sp. nov., is described from Ambon and Seram (the Moluccas). First genetic data are released for two potentially pantropical Echiniscus species: E. africanus Murray, 1907 and E. pusae Marcus, 1928. Furthermore, Echiniscus minutus sp. nov. (Sulawesi Tengah), exhibiting trunk spines and contrasting dorsal sculpturing that comprise both pores and epicuticular granules, is found to constitute a separate evolutionary lineage within the Echiniscus spinulosus morphogroup (epicuticular granules are typically absent in the spinulosus group). Based on the phylogenetic reconstructions involving ca. 80 spp. of echiniscids representing the Echiniscus evolutionary line, we hypothesise that the tropical and subtropical regions served as the main radiation zone for this heterotardigrade clade. Finally, Pseudechiniscus (Meridioniscus) celebesiensis sp. nov. (Sulawesi Tengah) is a characteristic species with an apomorphic lack of claw spurs and intricate dorsal cuticular sculpturing. Our findings suggest that the tropical areas of the globe harbour a phylogenetically important but yet mostly uncovered portion of Earth’s tardigrade diversity.

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Remarks on the Echiniscus viridis group, with the description of a new species (Tardigrada, Echiniscidae)

Cited by 24 publications

References 7 publications

Congruence between molecular phylogeny and cuticular design in Echiniscoidea (Tardigrada, Heterotardigrada)

Congruence between molecular phylogeny and cuticular design in Echiniscoidea (Tardigrada, Heterotardigrada)

New description ofEchiniscus viridisMurray, 1910 and remarks on theviridisgroup

Novel integrative data for Indomalayan echiniscids (Heterotardigrada): new species and old problems

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