Revision of Trigonostomum Schmidt, 1852 (Platyhelminthes, Typhloplanoida, Trigonostomidae) with the description of seven new species

Willems, Wim; Artois, Tom; Vermin, W.; Schockaert, Ernest R.

doi:10.1111/j.1096-3642.2004.00124.x

Cited by 767 publications

(35 citation statements)

References 17 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Discussion: This species clearly belongs to the genus Trigonostomum because of the rostral integumental invagination ('proboscis'), the forwardly inclined pharynx, and the construction of the male and female genital system in general and of the stylet and bursal appendage in particular. The stylet is typical for the species group 1B (stylet with a proximal turn of 90-180°) as defined by Willems et al (2004b). Furthermore, based on the morphology of the sclerotized structures, this species is almost identical to T. vanmecheleni from the Italian Adriatic.…”

Section: I a G N O S I S ( F R O M W I L L E M S E T A L 2 0 0 mentioning

confidence: 78%

“…Coronhelmis lutheri Ax, 1951 Skåne, Sweden (Karling, 1986) Willems et al, 2004b Victoria, BC 48°24′12″N; 123°21′03″W MF321754…”

Section: Kc529556mentioning

confidence: 99%

“…Trigonostomum denhartogi (Karling, 1978) Willems et al, 2004b Nouméa, New Caledonia 22°18′20″S; 166°26′51″E AY775773 -Beklemischeviella contorta (Beklemischev, 1927) Luther, 1943 Hanko, Finland…”

Section: Kc529415 Kc529541mentioning

confidence: 99%

“…Remarks: Willems et al (2004b) Description: Live animals between 1.1 and 1.9 mm long. With lenticular eyes of which the reniform pigment zone is often divided into two parts.…”

Section: I a G N O S I S ( F R O M W I L L E M S E T A L 2 0 0 mentioning

confidence: 99%

“…nov. is also new and described with morphological data. For Trigonostomum tori (Karling, 1986) Willems et al, 2004b; Ceratopera axi (Riedl, 1954) Den Hartog, 1964; Ceratopera pilifera Karling, 1986; Ceratopera pacifica (Karling, 1986) comb. nov.; and Tvaerminnea karlingi Luther, 1943, records are a northward expansion of their known distribution in the temperate Northeast Pacific Ocean.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Molecular phylogeny of trigonostomine turbellarians (Platyhelminthes: Rhabdocoela: Trigonostomidae), including four new species from the Northeast Pacific Ocean

Steenkiste

Leander

2017

Zoological Journal of the Linnean Society

View full text Add to dashboard Cite

Rhabdocoels comprise a species-rich group of microturbellarians in marine habitats around the globe. Knowledge of their species diversity in the Northeast Pacific Ocean is limited to a few studies. Here we present nine species within Trigonostominae and one species within Brinkmanniellinae associated with intertidal algae, sandy beaches and mudflats from the coast of British Columbia and Washington. Four species, Trigonostomum tillicum sp. nov., Ceratopera cascadiensis sp. nov., Ceratopera complicata sp. nov. and Ptychopera unicornis sp. nov., are new to science and are established based on molecular data and distinctive traits associated with the stylet and bursal appendage. Furthermore, we report on the occurrence of Trigonostomum tori, Ceratopera axi, Ceratopera pilifera, Ceratopera pacifica comb. nov., Ptychopera japonica and Tvaerminnea karlingi and provide new data on their morphology. A molecular phylogenetic analysis of Trigonostominae and other Thalassotyphloplanida using 18S rRNA and partial 28S rRNA sequences from 42 species demonstrates the phylogenetic positions of the four new species in addition to other inter-and intrageneric relationships within Trigonostominae (e.g. Messoplana is embedded within Ceratopera). This molecular phylogenetic context enables us to reassess homology statements about stylet morphology and the organization of the afferent system within Trigonostominae.

show abstract

Section: I a G N O S I S ( F R O M W I L L E M S E T A L 2 0 0 mentioning

confidence: 78%

“…Coronhelmis lutheri Ax, 1951 Skåne, Sweden (Karling, 1986) Willems et al, 2004b Victoria, BC 48°24′12″N; 123°21′03″W MF321754…”

Section: Kc529556mentioning

confidence: 99%

Section: Kc529415 Kc529541mentioning

confidence: 99%

“…Remarks: Willems et al (2004b) Description: Live animals between 1.1 and 1.9 mm long. With lenticular eyes of which the reniform pigment zone is often divided into two parts.…”

Section: I a G N O S I S ( F R O M W I L L E M S E T A L 2 0 0 mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Molecular phylogeny of trigonostomine turbellarians (Platyhelminthes: Rhabdocoela: Trigonostomidae), including four new species from the Northeast Pacific Ocean

Steenkiste

Leander

2017

Zoological Journal of the Linnean Society

View full text Add to dashboard Cite

show abstract

Patterns of diversity and endemism of soft-bodied meiofauna in an oceanic island, Lanzarote, Canary Islands

et al. 2019

View full text Add to dashboard Cite

Oceanic islands, characterized by high levels of endemism and distinct faunas when compared to neighbouring continents, represent natural evolutionary laboratories for biologists to understand ecological and evolutionary processes. However, most studies on oceanic islands have focused on terrestrial and marine macrofaunal organisms, and ignored microscopic animals. We present here an inventory of all soft-bodied meiofaunal organisms collected during a two-weeks workshop on the oceanic island of Lanzarote, Canary Islands. Our checklist included 239 species, with 88 of them endemic to the archipelago. The number of endemic species was lower in groups with a higher proportion of parthenogenetic species, while it was not significantly affected by body size and percentage of species with dispersal stages. A higher percentage of endemic species was found in isolated habitats and environments, with only annelids Powered by Editorial Manager® and ProduXion Manager® from Aries Systems Corporation showing significantly higher number of endemic species in anchialine caves. Our results might be biased by the high number of indeterminate species found in our samples and the lack of knowledge of the meiofaunal of the African coast. Our findings, however, provide the first insight of patterns of diversity in oceanic islands, suggesting that island endemic species might also exist amongst microscopic animals

show abstract

Taxonomy and phylogeny of Dalytyphloplanida Willems et al., 2006 (Platyhelminthes: Rhabdocoela), with the description of a new family, a new genus, and sixteen new species from Cuba and Panama

Diez,

Monnens,

Wuyts

et al. 2023

Org Divers Evol

View full text Add to dashboard Cite

Twenty-two marine species of Dalytyphloplanida from Cuba, Panama, and Lanzarote are presented, sixteen of which are new to science. Five known species are recorded from Cuba: Kytorhynchus microstylus, Ceratopera paragracilis, Trigonostomum armatum, T. franki, and T. vanmecheleni. Neokytorhynchus pacificus is recorded for the first time in the Atlantic (Lanzarote). For one species, a new genus is erected to be included in a new family. A new genus and thirteen new species from Cuba and three new species from Panama are described. The new species are mainly distinguished from their congeners by the specific morphology of the copulatory structures. The new taxa are discussed in the context of a new phylogenetic analysis of Dalytyphloplanida. This analysis includes sequences of 238 species, 14 of which were sequenced for the first time. The phylogenetic analysis and the detailed morphology suggest that K. microstylus may constitute a complex of cryptic species. The internal phylogenetic relationships of Trigonostomum and Promesostoma were separately analysed to include new sequence data of the mitochondrial cox1 gene. These genera are shown to consist of several diagnosable clades, concurring with the results of early morphological studies of these taxa. Morphological and molecular data support the notion that Trigonostomum sinensis is a junior synonym of T. vanmecheleni, and we therefore propose their synonymisation. A new family is erected, Schockaertiidae fam. n., to include a monophyletic clade of neodalyellids with a pharynx rosulatus and a copulatory bulb devoid of hard structures (Schockaertia aprostatica gen. n. sp. n. and Einarella argillophyla). We propose a new classification into families of Thalassotyphloplanida, which envolves elevating the status of Adenorhynchinae to family level (Adenorhynchidae status novus). All previously recognised thalassotyphloplanid families are recovered as monophyletic (Kytorhynchidae, Byrsophlebidae, Promesostomidae, and Trigonostomidae). No support was found for the previously described subfamilies, except Paramesostominae, and we, therefore, propose to suppress these taxa.

show abstract

Revision of Trigonostomum Schmidt, 1852 (Platyhelminthes, Typhloplanoida, Trigonostomidae) with the description of seven new species

Cited by 767 publications

References 17 publications

Molecular phylogeny of trigonostomine turbellarians (Platyhelminthes: Rhabdocoela: Trigonostomidae), including four new species from the Northeast Pacific Ocean

Molecular phylogeny of trigonostomine turbellarians (Platyhelminthes: Rhabdocoela: Trigonostomidae), including four new species from the Northeast Pacific Ocean

Patterns of diversity and endemism of soft-bodied meiofauna in an oceanic island, Lanzarote, Canary Islands

Taxonomy and phylogeny of Dalytyphloplanida Willems et al., 2006 (Platyhelminthes: Rhabdocoela), with the description of a new family, a new genus, and sixteen new species from Cuba and Panama

Contact Info

Product

Resources

About