Pathology, distribution, morphological and genetic identity of Deladenus proximus (Tylenchida: Neotylenchidae) a parasitic nematode of the woodwasp, Sirex nigricornis in the eastern United States

Zieman, Elliott A.; Reeve, John D.; Braswell, W. Evan; Jiménez, Francisco

doi:10.1016/j.biocontrol.2015.04.009

Cited by 8 publications

(12 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, molecular data are only available for a limited number of identified Deladenus spp., namely D. siricidicola ( Yu et al, 2009 ; Mlonyeni et al, 2011 ; Leal et al, 2012 ; Morris et al, 2013 ), D. proximus ( Yu et al, 2011 ; Morris et al, 2013 ; Zieman et al, 2015 ; Hartshorn et al, 2017 ), D. prorsus ( Yu et al, 2013 ), and D. nitobei ( Kanzaki et al, 2016 ). Several old species under the genus are poorly described and their type materials are hardly accessible.…”

Section: Discussionmentioning

confidence: 99%

“…Almost all old species under the genus have been established based upon traditional approaches. On the contrary, several recently described species include molecular data (e.g., Yu et al, 2009Yu et al, , 2011Yu et al, , 2013Yu et al, , 2014Morris et al, 2013;Tomar et al, 2015;Kanzaki et al, 2016). The potential biocontrol ability of Deladenus siricidicola (Bedding, 1968) against Sirex noctilio Fabricius (Bedding and Akhurst, 1978) has increased the interests on the genus and studying of several Deladenus brevis n. sp.…”

mentioning

confidence: 99%

“…The potential biocontrol ability of Deladenus siricidicola ( Bedding, 1968 ) against Sirex noctilio Fabricius ( Bedding and Akhurst, 1978 ) has increased the interests on the genus and studying of several aspects of its biology (e.g., Morris et al, 2013 ). Deladenus proximus ( Bedding, 1974 ) appears to be an efficient sterilizer against Sirex nigricornis ( Zieman et al, 2015 ). D. canii ( Bedding, 1974 ) has been found parasitizing North American Sirex cyaneus F. and Deladenus nevexii ( Bedding, 1974 ) parasitizes Xeris spectrum L. All species of Deladenus were assumed to be mycetophagous, until Bedding (1968) found the infective form for some species, showing that two phases occur in their life.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Description of Deladenus brevis n. sp. (Sphaerularioidea: Neotylenchidae) from Iran: a morphological and molecular phylogenetic study

Heydari

Abolafia

Pedram

2020

Journal of Nematology

View full text Add to dashboard Cite

Deladenus brevis n. sp. is described and illustrated based upon its morphological, morphometric, and molecular characters. The new species is mainly characterized by its small body size (367-454 µm long females and 350, 391 µm long males) and has small lateral vulval flaps. It is further characterized by having six lines in the lateral fields, cephalic region slightly expanded, narrower adjacent to the body, short 6 to 7 µm long stylet with three posteriorly sloped knobs, no post-vulval uterine sac (PUS), conical tail, narrowing to a rounded tip, and rare males with slender tylenchoid spicules and bursa reaching the tail tip. By having six lines in the lateral fields, the new species was compared with five known species of the genus, namely D. apopkaetus, D. cocophilus, D. durus, D. obtusicaudatus, and D. persicus, having comparable number (six or seven) of lines in the lateral fields. It was further compared with D. pakistanensis having lateral vulval flaps. The differences with above-mentioned species are discussed. In molecular phylogenetic analyses using nearly full length small and large subunit ribosomal DNA (SSU and LSU D2-D3 rDNA) and cytochrome c oxidase subunit I (COI mtDNA) gene sequences, D. brevis n. sp. formed clade with species of the genus with different clade support values in Bayesian inference.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Description of Deladenus brevis n. sp. (Sphaerularioidea: Neotylenchidae) from Iran: a morphological and molecular phylogenetic study

Heydari

Abolafia

Pedram

2020

Journal of Nematology

View full text Add to dashboard Cite

show abstract

“…to be most closely related to two isolates, S. cyaneus 'cya 2' and S. nitidus 'nit30', from the eastern USA. Unfortunately, molecular data are only available for a limited number of Deladenus spp: D. siricidicola (Yu et al, 2009;Mlonyeni et al, 2011;Leal et al, 2012;Morris et al, 2013), D. proximus (Yu et al, 2011;Morris et al, 2013;Zieman et al, 2015;Hartshorn et al, 2017), and D. prorsus Yu, Gu & Ye, 2013(Yu et al, 2013, hampering inclusion of other described species in our analysis. Molecular data have proven to be increasingly important for discriminating these nematode species.…”

Section: Discussionmentioning

confidence: 99%

Characterisation of the dimorphic Deladenus beddingi n. sp. and its associated woodwasp and fungus

et al. 2018

View full text Add to dashboard Cite

SummaryA new dimorphic species ofDeladenusisolated fromSirex californicusfrom Washington, USA, is described asD. beddingin. sp. Evolutionary relationships of the new species with otherDeladenusspecies were assessed using multilocus sequencing. Phylogenetic relationships derived from analyses of mtCO1and ITS showedD. beddingin. sp. to be genetically distinct from other North AmericanDeladenusparasitisingSirex. Molecular analyses indicated thatD. beddingin. sp. is a member of theD. siricidicolaspecies complex, which also includes undescribed nativeDeladenusfromSirex cyaneusandS. nitidus, andD. siricidicolafromS. noctilio. Mycophagous adults were characterised by the position of the excretory pore, which was located 32 (22-52) and 48 (38-69) μm anterior to the hemizonid in mycophagous females and males, respectively. Typologically, the new species is most similar toD. siricidicola,D. proximusandD. nitobei, but can be distinguished from these species by several morphometric traits, including the value of ratios a, b, c of the mycophagous females and males, ratio b of the infective females, and the morphology of the tail of the mycophagous females, which is narrow and gradually tapering. This novel nematode species feeds on the fungusAmylostereum chailletiiduring its mycophagous phase. Experimental results showed very little reproduction byD. beddingin. sp. when feeding onA. areolatumcompared to robust reproduction when feeding onA. chailletii.

show abstract

“…It is expected that the parasitic nematode Deladenus (Tylenchida: Neotylenchidae) would also have an effect on the establishment of S. noctilio in the Southeast. It parasitizes the eggs, mycangia, and hemocoel of female wood wasps, leaving wasps unable to lay viable eggs (Keeler 2012;Kroll et al 2013;Zieman 2013). All of these previously mentioned species could inhabit the same resource as S. noctilio, and these multi-trophic interactions should be examined closely as part of any comprehensive management recommendations.…”

Section: Discussionmentioning

confidence: 99%

Effects of Forest Type and Management on Native Wood Wasp Abundance (Hymenoptera: Siricidae) in Mississippi, United States

2014

View full text Add to dashboard Cite

Pathology, distribution, morphological and genetic identity of Deladenus proximus (Tylenchida: Neotylenchidae) a parasitic nematode of the woodwasp, Sirex nigricornis in the eastern United States

Cited by 8 publications

References 31 publications

Description of Deladenus brevis n. sp. (Sphaerularioidea: Neotylenchidae) from Iran: a morphological and molecular phylogenetic study

Description of Deladenus brevis n. sp. (Sphaerularioidea: Neotylenchidae) from Iran: a morphological and molecular phylogenetic study

Characterisation of the dimorphic Deladenus beddingi n. sp. and its associated woodwasp and fungus

Effects of Forest Type and Management on Native Wood Wasp Abundance (Hymenoptera: Siricidae) in Mississippi, United States

Contact Info

Product

Resources

About