Orders Chromadorida, Desmodorida and Desmoscolecida.

Decraemer, Wilfrida; Smol, N.

doi:10.1079/9780851990095.0497

Cited by 31 publications

(33 citation statements)

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“…Widespread in European freshwater periphytic habitats (Decraemer & Smol, 2006), these two species show a typical epilithic lifestyle with their ability to attach themselves to hard substrates with sticky silks produced by their caudal glands (Meschkat, 1934;Croll & Zullini, 1972;Decraemer & Smol, 2006). Both species are described as epistrate-feeders expected to feed predominantly on MPB, although feeding on bacteria or on unicellular heterotrophic eukaryotes is not excluded (Traunspurger, 2000).…”

Section: Discussionmentioning

confidence: 96%

Feeding of biofilm-dwelling nematodes examined using HPLC-analysis of gut pigment contents

et al. 2011

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The natural feeding behaviour of the nematodes Chromadorina bioculata (Schultze in Carus 1857) and Chromadorina viridis (Linstow 1876) was studied in situ, within epilithic biofilms of the Garonne River (France). Based on their feedingtype characteristics and population dynamics, it was hypothesised that these species feed selectively on microphytobenthos (MPB) within the biofilm, and that among MPB groups, diatoms are preferred. Highperformance liquid chromatography (HPLC) was used for separation, identification and quantification of pigments both in nematode guts and in the biofilm. This is the first time that nematode gut pigment contents were examined under natural conditions. Diatoms dominated the MPB which also comprised cyanobacteria and green microalgae. The comparison between chlorophyll a content in nematode guts versus in the biofilm showed that C. bioculata and C. viridis fed opportunistically (non-selectively) on MPB within the biofilm. Only diatom biomarker pigments were found in nematode guts suggesting that they could preferentially fed on diatoms among MPB groups. However, the non-detection of biomarker pigments for other microphyte groups could be also linked to HPLC detection limits. It was estimated that Chromadorina nematodes daily ingested on average 0.03-0.67% of the MPB standing stock. This grazing covered only a small part of their energetic requirements, suggesting that besides MPB they probably also fed on other biofilm food sources. Some considerations on the applicability of the HPLC gut pigment analysis technique for the examination of nematode feeding are also presented.

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Section: Discussionmentioning

confidence: 96%

Feeding of biofilm-dwelling nematodes examined using HPLC-analysis of gut pigment contents

et al. 2011

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“…118: 1-25 (2015) Diagnosis (from Decraemer & Smol 2006) Member of Desmodoridae. Body cuticle with fine annulations.…”

Section: Armenterosmentioning

confidence: 99%

New Spirinia and Stygodesmodora species (Nematoda, Spiriniinae) from the Southwest Pacific, and a revision of the related genera Spirinia, Chromaspirina and Perspiria

Leduc

Verschelde

2015

EJT

694

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Abstract. Two new species of the family Desmodoridae are described from the upper continental slope of New Zealand, Southwest Pacific, and the genera Spirinia, Chromaspirina and Perspiria are revised. Spirinia verecunda sp. nov. is characterised by a short, stout body, cuticle covered in minute, hair-like structures, unispiral amphideal aperture and cryptospiral amphideal fovea, buccal cavity with small dorsal tooth and minute subventral teeth, eight oblong glands surrounding anterior portion of pharynx, large sperm cells, spicules with weak capitulum, and the absence of precloacal supplements. Stygodesmodora confusa sp. nov. is characterised by a relatively short body, spiral amphids with 1.2-1.4 turns, cephalic setae situated at or slightly posterior to mid-level of amphid, and males with four precloacal supplements consisting of short setae on wide bases. Like other species of the genus, S. confusa sp. nov. is characterised by an annulated head region, but in some specimens the cuticle annulations are restricted to the dorsal and ventral sides of the head. S. confusa sp. nov. shows similarities with species of other desmodorid genera (i.e., Echinodesmodora, Bolbonema), but can be differentiated from them by the presence of an annulated head region and amphideal plates. The genera Spirinia, Chromaspirina and Perspiria have very similar morphologies and differ mainly in the size and structure of the buccal cavity (Spirinia vs Chromaspirina) or the shape of the tail and placement of the amphids relative to the cuticle annulations (Spirinia vs Perspiria); their diagnoses are clarified and some nomenclatural changes are proposed to eliminate overlap in the definitions of these genera.

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“…Body cuticle annulated, never punctated. Metachromadorinae Chitwood, 1936 Diagnosis (after Wieser & Hopper 1967, Decraemer & Smol 2006: Desmodoridae. Single anterior testis.…”

Section: Superfamily Desmodoroidea Filipjev 1922mentioning

confidence: 99%

7.13 Order Desmodorida De Coninck, 1965

Tchesunov¹

2013

Nematoda

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Orders Chromadorida, Desmodorida and Desmoscolecida.

Abstract: This paper provides morphological descriptions of the nematodes of the Orders Chromadorida, Desmodorida and Desmoscolecida as well as their habitats, geographical distribution, taxonomic details, illustrations and keys to the genera.

Cited by 31 publications

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Feeding of biofilm-dwelling nematodes examined using HPLC-analysis of gut pigment contents

Feeding of biofilm-dwelling nematodes examined using HPLC-analysis of gut pigment contents

New Spirinia and Stygodesmodora species (Nematoda, Spiriniinae) from the Southwest Pacific, and a revision of the related genera Spirinia, Chromaspirina and Perspiria

7.13 Order Desmodorida De Coninck, 1965

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