Revision of the Hoplolaiminae (Nematoda) Iii. Scutellonema Andrassy, 1958 1)

Шер, С. А.

doi:10.1163/187529263x00971

Cited by 16 publications

(36 citation statements)

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“…In the current study most of the morphological features of four S. bradys populations agreed with earlier descriptions by Sher (1963) and Moura & Teixeira (1980), except for the female body length, which tended to be longer (values ranging from 0.89 to 1.27 mm) for Costa Rican populations than the other descriptions (values ranging from 0.75 to 1.16). The values do, however, compare closely with those found for females (ranging from 0.92 to 1.23 mm) by Goodey (1935), who reported one of the first descriptions for S. bradys.…”

Section: Discussionsupporting

confidence: 91%

Molecular and morphological characterisation of Scutellonema bradys from yam in Costa Rica and development of specific primers for its detection

Humphreys-Pereira

Williamson

Lee

et al. 2014

Nematol

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The yam nematode, Scutellonema bradys, which can cause dry rot disease of yam (Dioscorea spp.), was recorded for the first time from Costa Rica in four species of yam occurring in the Atlantic and north regions. Morphometric measurements from two populations from each region using ten female and 11 male characters corresponded with previous descriptions of this species. Canonical discriminant analysis of the female morphometric data separated the populations by region, whereas no separation by region was evident using the male data. Analysis of DNA sequences from the ITS region indicated that populations from Costa Rica were monophyletic with S. bradys from West Africa and clearly distinct from other Scutellonema species. No genetic separation by geographic region or Dioscorea species host was observed between Costa Rica populations. Species-specific primers were developed from the ITS region and supported the identity of 17 populations from 15 locations in Costa Rica as S. bradys: 14 populations from D. alata (greater or water yam) and one each from D. trifida (white yampee), D. cayenensis (yellow yam) and D. rotundata (white yam). Yam production in Costa Rica began in the Atlantic region, where the yam nematode was likely introduced from the Caribbean, progressively spreading to other locations through the use of infected vegetative planting material.

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Section: Discussionsupporting

confidence: 91%

Molecular and morphological characterisation of Scutellonema bradys from yam in Costa Rica and development of specific primers for its detection

Humphreys-Pereira

Williamson

Lee

et al. 2014

Nematol

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“…15(6), 2013 in this paper we keep these two groups under the same specific name until molecular characterisations of African species similar to S. brachyurus, including S. unum, are conducted. When comparing the present specimens with those of S. brachyurus described in the literature they fit very well except for having 3-6 lip annuli compared to 3-7 (Goodey, 1952;Sher, 1964;Edward & Rai, 1970;Ali et al, 1973;Van den Berg & Heyns, 1973). The lip annuli are profusely marked with longitudinal and oblique lines with the basal annulus having 4-20 regular and irregular blocks compared to six in S. brachyurus and 15-22 in S. unum according to the literature (Germani et al, 1985;Melillo & Troccoli, 1993).…”

Section: Discussionsupporting

confidence: 72%

“…The two specimens available for the present study are very similar to S. cavenessi Sher, 1964 andS. clathricaudatum Whitehead, 1959, for which descriptions are given by various authors, viz.…”

Section: Notementioning

confidence: 62%

“…clathricaudatum Whitehead, 1959, for which descriptions are given by various authors, viz. Sher (1964), Van den Berg & Heyns (1973), Germani et al (1985), Baujard et al (1990), Sakwe & Geraert (1992). It is necessary to conduct additional studies with more material to make a more precise identification of the nematodes from this sample.…”

Section: Notementioning

confidence: 99%

“…in Taiwan and identified as S. truncatum Sher, 1964 was published by Chen et al (2006). This sequence was also included in our analysis.…”

Section: Scutellonema Sp Cmentioning

confidence: 99%

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Morphological and molecular characterisation and diagnostics of some species of Scutellonema Andrássy, 1958 (Tylenchida: Hoplolaimidae) with a molecular phylogeny of the genus

Berg¹,

Tiedt

Coyne³

et al. 2013

Nematol

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Scutellonema spp. are widely distributed across tropical and subtropical regions of the world and are associated with numerous agricultural and horticultural crops. Identification of many Scutellonema species is not always reliable, in part because many species share very similar diagnostic characters. In this study, we provide morphological and molecular characterisation of S. brachyurus from the USA and South Africa, S. bradys from Nigeria and three unidentified species from California, USA, New Zealand and Burkina Faso. Morphological descriptions, measurements, light and scanning electron microscopic photos and drawings are given for S. brachyurus. Females of S. brachyurus from the USA (type A) and South Africa (type B) showed a significant variation in the number of sectors and blocks on the lip annuli, ranging from about 4-12 and from 8-20, respectively. Molecular analysis using the D2-D3 of 28S rRNA, ITS rRNA and the COI mtDNA gene sequences revealed two distinct genotypes within S. brachyurus samples: type A (samples from USA, Italy, Korea, Taiwan) and type B (South Africa). Multivariate analyses determined that S. brachyurus from the USA and Taiwan (type A) differed from that from South Africa (type B) mainly in body, tail and DGO lengths, and ratios b′, c′, c and V. Phylogenetic relationships within Scutellonema are given as inferred from the analyses of the D2-D3 of 28S rRNA, ITS rRNA and the COI mtDNA gene sequences. PCR-RFLP diagnostic profiles and PCR with species-specific primers are developed for the studied Scutellonema species.

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Descriptions ofScutellonema southeyi n. sp. and a population ofHemicycliophora chathami Yeates, 1978 (Tylenchida: Nematoda) from the Falkland Islands

Williams

1986

Syst Parasitol

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Revision of the Hoplolaiminae (Nematoda) Iii. Scutellonema Andrassy, 1958 1)

Cited by 16 publications

References 0 publications

Molecular and morphological characterisation of Scutellonema bradys from yam in Costa Rica and development of specific primers for its detection

Molecular and morphological characterisation of Scutellonema bradys from yam in Costa Rica and development of specific primers for its detection

Morphological and molecular characterisation and diagnostics of some species of Scutellonema Andrássy, 1958 (Tylenchida: Hoplolaimidae) with a molecular phylogeny of the genus

Descriptions ofScutellonema southeyi n. sp. and a population ofHemicycliophora chathami Yeates, 1978 (Tylenchida: Nematoda) from the Falkland Islands

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