Two peculiar new genera of Typhloplanoida from the Western Indian Ocean

Clerck, Gert G. De; Schockaert, Ernest R.

doi:10.1007/bf00036355

Cited by 5 publications

(8 citation statements)

References 4 publications

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“…Characters were recorded based upon extensive descriptions in the literature: Aken’ova & Lester (1996); Bandoni & Brooks (1987a,b); Boeger & Kritsky (1993, 1997); Brooks (1982, 1989a,b); Brooks & McLennan (1993a,b,c); Brooks et al . (1985a,b, 1989, 1991); Bullock (1965); Cannon (1982, 1987); Ching & Leighton (1993); Christensen (1976); Christensen & Kanneworff (1965); DeClerk & Schockaert (1995); Ehlers (1984, 1985a,b, 1986, 1995); Ehlers & Sopott‐Ehlers (1993); Fleming (1986); Fleming et al . (1981); Hoberg et al .…”

Section: Methodsmentioning

confidence: 99%

Phylogenetic analysis of the Rhabdocoela (Platyhelminthes) with emphasis on the Neodermata and relatives

Zamparo¹,

Brooks²,

Hoberg³

et al. 2001

Zoologica Scripta

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2001) Phylogenetic analysis of the Rhabdocoela (Platyhelminthes) with emphasis on the Neodermata and relatives. 30 ,[59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77] Phylogenetic systematic analysis of 24 taxa representing the rhabdocoel platyhelminths, based on a suite of 89 morphological characters, produced two equally parsimonious trees, 181 steps long, with a consistency index (CI ) of 0.69 and a rescaled consistency index (RCI) of 0.56, differing only with respect to that portion of the tree containing Umagillidae, Acholadidae, Graffillinae, Pseudograffillinae, Pterastericolidae and Hypoblepharinidae. Our results accommodate all previously proposed sister taxa to the Neodermata in a single clade in which (( Dalyelliidae + Temnocephalida) Typhloplanidae) is the sister group of (( Fecampiidae + Urastoma ) ( Udonella ((Aspidogastrea + Digenea) (Monogenea (Gyrocotylidea (Amphilinidea + Eucestoda)))))). Bootstrap and jackknife analyses indicate that the groupings of ((Dalyelliidae + Temnocephalida) Typhloplanidae) and of ((Fecampiidae + Urastoma ) ( Udonella ((Aspidogastrea + Digenea) ( Monogenea (Gyrocotylidea (Amphilinidea + Eucestoda)))))) are highly robust, with the latter clade having a CI of 90% and RCI of 82%. Disagreements among previous analyses of these taxa have been due to the influence of missing data for critical characters in key taxa and differences in the taxa analysed, rather than any inherent weakness in the morphological data. Non-phylogenetic systematic approaches to homology assessment and misconceptions regarding phylogenetic systematic methodology are discussed. Recent analyses combining sequence data with a subset of approximately 60% of the morphological characters should be re-assessed using the entire morphological database. Even if Udonella is a monogenean, it is most parsimonious to suggest that the common ancestor of the Neodermata had a vertebrate-arthropod two-host life cycle.

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Section: Methodsmentioning

confidence: 99%

Phylogenetic analysis of the Rhabdocoela (Platyhelminthes) with emphasis on the Neodermata and relatives

Zamparo¹,

Brooks²,

Hoberg³

et al. 2001

Zoologica Scripta

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“…The monophyly of the genus Gaziella is demonstrated after the inclusion of two new species in our phylogenetic analysis, which cluster together with a previously sequenced and undescribed species. All species of Gaziella share the diagnostic features of the genus as established by De Clerck and Schockaert (1995): the presence of a single seminal vesicle contained within the male copulatory bulb and an anterior proboscislike and glandular invagination. Now five species of Gaziella are known, three of which are described in this contribution.…”

Section: Gaziella and Moevenbergiamentioning

confidence: 84%

“…Representatives of Moevenbergia Armonies & Hellwig, 1987 (formally Promesostomidae, Brinkmanniellinae), are morphologically similar to Gaziella. These genera differ from each other by the presence of two extracapsular seminal vesicles and a pair of seminal reservoirs on each oviduct in Moevenbergia (Armonies & Hellwig, 1987), whereas there is a single intracapsular seminal vesicle and a single seminal reservoir on each oviduct in Gaziella (De Clerck & Schockaert, 1995). Recently, Armonies (2017) described a second species of Moevenbergia: M. oculofagi Armonies, 2017.…”

Section: Kytorhynchidaementioning

confidence: 99%

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

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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.

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“…Differences between the described and the new species are the presence or absence of eyepigmentations and the size, number, and arrangement of cirrus spines. Since the entire family is in need of revision [24,25] this classification is preliminary, only.…”

Section: Discussionmentioning

confidence: 99%

Analysing long-term change in small benthos: geomorphological dynamics affects method selection

Armonies

2020

Helgol Mar Res

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In the tidal inlets of the northern Wadden Sea, species composition of selected taxa of the small benthos is compared to a study performed some 35 years before, using the same methods and sampling the same sites. Site-by-site comparisons suggest a dramatic change in community composition at a local scale. However, geomorphology is highly dynamic in this area, and sediment composition, water depth, or both, had changed during the intermediate decades in most of the sites. Since most of the species are limited to a single sediment type, a habitat approach was used for an alternative analysis of the data. This contradicted the idea of dramatic change but revealed relatively high stability of species composition at a regional scale, indicating that local change cannot be up-scaled to larger areas in this highly dynamic environment. Instead, a habitat approach is more adequate though increasing environmental dynamics requires increasing sampling effort. As a by-product of this study, 8 new taxa of Platyhelminthes are described: Karlingia septentrionalis n. sp., Paracalviria diadema n. sp., Kataplana macrobursalia n. sp., Adenorhynchus compositus n. sp., Litucivis simplex n. sp., Scoliopharyngea magnaspina n. sp., Promesostoma convolutum n. sp., and Gnathorhynchus rostellatus indivisus n. spp.

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Two peculiar new genera of Typhloplanoida from the Western Indian Ocean

Cited by 5 publications

References 4 publications

Phylogenetic analysis of the Rhabdocoela (Platyhelminthes) with emphasis on the Neodermata and relatives

Phylogenetic analysis of the Rhabdocoela (Platyhelminthes) with emphasis on the Neodermata and relatives

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

Analysing long-term change in small benthos: geomorphological dynamics affects method selection

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