On the role of character loss in orbiniid phylogeny (Annelida): Molecules vs. morphology

Bleidorn, Christoph; Hill, Natascha; Erséus, Christer; Tiedemann, Ralph

doi:10.1016/j.ympev.2009.03.022

Cited by 40 publications

(93 citation statements)

References 52 publications

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“…Similar results suggest that common and widely distributed species of orbiniids may consist of suites of morphologically similar sibling species (Bleidorn et al 2006). A more recent molecular phylogeny of orbiniids using a larger suite of species by Zhadan et al (2015) also did not support the monophyly of several well-known genera; their tree topologies, however, differed from the earlier results of Bleidorn et al (2009).…”

Section: Introductioncontrasting

confidence: 70%

“…As part of a study of Orbiniidae phylogeny by Bleidorn et al (2009), specimens identified as Protoariciella uncinata from Mar del Plata, Argentina were found to have the same genetic structure as Leodamas tribulosus from Chile and these authors concluded that the Argentinian specimens were juveniles of L. tribulosus. Elias et al (2000) had earlier reported P. uncinata from Mar del Plata and noted that its morphology was variable including having a prostomium that was often pointed instead of rounded, thus further supporting the concept that juveniles of L. tribulosus have a rounded prostomium, two achaetous peristomial rings, and eyespots sometimes present.…”

Section: Leodamas Perissobranchiatus New Speciesmentioning

confidence: 99%

“…A third subfamily, the Methanoariciniinae, was established for Methanoaricia dendrobranchiata Blake, 2000, the unusual seep worm from the Gulf of Mexico. However, subsequent molecular phylogenies have demonstrated that Methanoaricia is nested within the genera comprising the Orbiniinae and that the genus Questa should be referred to the Orbiniidae (Bleidorn, 2005;Bleidorn et al, 2009). The molecular studies also suggest that some genera are not monophyletic.…”

Section: Introductionmentioning

confidence: 99%

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Polychaeta Orbiniidae from Antarctica, the Southern Ocean, the Abyssal Pacific Ocean, and off South America

Blake

2017

Zootaxa

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The orbiniid polychaetes chiefly from Antarctic and subantarctic seas and off South America are described based on collections of the National Museum of Natural History and new material from surveys conducted by the United States Antarctic Program and other federal and privately funded sources as well as participation in international programs. A total of 44 species of Orbiniidae distributed in 10 genera are reported from the Pacific Ocean and waters off South America and Antarctica. Twenty-one species are new to science; one species is renamed. Berkeleyia heroae n. sp., B. abyssala n. sp., B. weddellia n. sp.; B. hadala n. sp., Leitoscoloplos simplex n. sp., L. plataensis n. sp., L. nasus n. sp., L. eltaninae n. sp., L. phyllobranchus n. sp., L. rankini n. sp., Scoloplos bathytatus n. sp., S. suroestense n. sp., Leodamas hyphalos n. sp., L. maciolekae n. sp., L. perissobranchiatus n. sp., Califia bilamellata n. sp., Orbinia orensanzi n. sp., Naineris antarctica n. sp., N. argentiniensis n. sp., Orbiniella spinosa n. sp., and O. landrumae n. sp. are new to science. A new name, Naineris furcillata, replaces N. chilensis Carrasco, 1977, a junior homonym of N. dendtritica chilensis Hartmann‑Schröder, 1965, which is raised to full species status. Leodamas cochleatus (Ehlers, 1900) is removed from synonymy and redescribed. A neotype is established for Leodamas verax Kinberg, 1966, the type species. A general overview of Leodamas species is provided. The Leitoscoloplos kerguelensis (McIntosh, 1885) complex is reviewed and partially revised. Definitions of the genera of the Orbiniidae are updated to conform to recently described taxa. Several new synonymies are proposed following a reexamination of previously described type specimens. The morphological characters used to identify and classify orbiniids are reviewed. The biogeographic and bathymetric distributions of the South American and Southern Ocean orbiniid fauna are reviewed.

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Section: Introductioncontrasting

confidence: 70%

Section: Leodamas Perissobranchiatus New Speciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polychaeta Orbiniidae from Antarctica, the Southern Ocean, the Abyssal Pacific Ocean, and off South America

Blake

2017

Zootaxa

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“…Recent studies by Blake (2000), Kruse et al (2004), Bleidorn (2005), Bleidorn et al (2009), Dean & Blake (2015), and Zhadan et al (2015) have helped to clarify some questions about the family Orbiniidae and the ge-nus Scoloplos. Blake (2000), Bleidorn (2005), Bleidorn et al (2009) and Dean & Blake (2015) have considered the subgenera Scoloplos and Leodamas as separate genera because they are not closely related and do not constitute sister groups.…”

mentioning

confidence: 99%

“…Blake (2000), Bleidorn (2005), Bleidorn et al (2009) and Dean & Blake (2015) have considered the subgenera Scoloplos and Leodamas as separate genera because they are not closely related and do not constitute sister groups.…”

mentioning

confidence: 99%

A new species of polychaete worm from Juan Fernandez Archipelago, Chile, Scoloplos juanfernandezensis n. sp. (Polychaeta: Orbiniidae)

Rozbaczylo¹,

Díaz-Díaz²,

Cataldo³

2017

lajar

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ABSTRACT.A new species of Orbiniidae, Scoloplos juanfernandezensis n. sp. from the Robinson Crusoe Island (33°37'S, 78°51'W), Juan Fernández Archipelago, Chile, is described. The samples were collected by means of SCUBA from depths between 4 and 10 m, between the years 2008 and 2012. This is the first record of the famil y Orbiniidae for the Juan Fernández Archipelago. The new species is principally characterized by the dichotomously branched branchiae in the mid-posterior chaetigers with 2 to 4 terminal filaments, thoracic neuropodial hooks hooded, neuropodial acicula embedded with straight distal end, emergence of the first branchiae between chaetigers 20-28, but starting not always occurs on both sides of the segment at a time, the absence of subpodials papillae and the morphology of the parapodia. Scoloplos juanfernandezensis most closely resembles Scoloplos cylindrifer Ehlers, 1905, from New Zealand and Australia and Leodamas latum (Chamberlin, 1919) from Pacific side of Panamá.

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Temporal Plasticity in Annelid Development—Ontogeny of Phyllodoce groenlandica (Phyllodocidae, Annelida) Reveals Heterochronous Patterns

2013

Self Cite

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The variety of annelid larval types and developmental modes reflects the high diversity and variability within these lophotrochozoans. However, our knowledge of pattern formation and tissue development in annelids and allies is scarce. In order to gain more data concerning neurogenesis and myogenesis in annelid trochophores, we analyzed different larval stages of Phyllodoce groenlandica using immunohistochemical staining techniques and subsequent confocal laser scanning microscopy (clsm). Focusing on pre-metamorphic stages, we reconstruct the process of tissue and body formation within planktonic polychaetous trochophore larvae. Our investigations revealed detailed knowledge of general developmental modes in Annelida and exhibit ontogenetic heterochrony of tissue development between two closely related annelid species. As such, P. groenlandica shows a delayed onset of nervous system development when compared with P. maculata. In contrast to the latter species, we were not able to detect the posterior sensory organ in larval P. groenlandica. We draw conclusions concerning general development of annelid trochophores and provide data showing new insights into the plasticity of body plans in Annelida.

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On the role of character loss in orbiniid phylogeny (Annelida): Molecules vs. morphology

Cited by 40 publications

References 52 publications

Polychaeta Orbiniidae from Antarctica, the Southern Ocean, the Abyssal Pacific Ocean, and off South America

Polychaeta Orbiniidae from Antarctica, the Southern Ocean, the Abyssal Pacific Ocean, and off South America

A new species of polychaete worm from Juan Fernandez Archipelago, Chile, Scoloplos juanfernandezensis n. sp. (Polychaeta: Orbiniidae)

Temporal Plasticity in Annelid Development—Ontogeny of Phyllodoce groenlandica (Phyllodocidae, Annelida) Reveals Heterochronous Patterns

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