Description and developmental biology of the predatory diplogastrid<i>Acrostichus nudicapitatus</i>(Steiner, 1914) Massey, 1962 (Nematoda: Rhabditida)

Ahlawat, Shikha; Tahseen, Qudsia

doi:10.1515/helmin-2016-0005

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…Intriguingly, we never observed the Eu morph in Acrostichus . This could be due to a lack of the dimorphism in the species, which varies in the genus ( Giblin and Kaya, 1984 ; Ahlawat and Tahseen, 2016 ), or an inability to induce the Eu morph in these settings. The delayed dauer exit in Ppa10 and the lack of Eu worms overall can potentially be explained by nematode-derived modular metabolites (NDMMs), small molecules that facilitate communication among worms, including inducing plastic responses and regulating behaviors ( Butcher et al, 2007 ; Bento et al, 2010 ; Bose et al, 2012 ; Falcke et al, 2018 ; Dong et al, 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Multidimensional competition of nematodes affects plastic traits in a beetle ecosystem

Renahan

Sommer

2022

Front. Cell Dev. Biol.

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Resource competition has driven the evolution of novel polyphenisms in numerous organisms, enhancing fitness in constantly changing environmental conditions. In natural communities, the myriad interactions among diverse species are difficult to disentangle, but the multidimensional microscopic environment of a decaying insect teeming with bacteria and fighting nematodes provides pliable systems to investigate. Necromenic nematodes of the family Diplogastridae live on beetles worldwide, innocuously waiting for their hosts’ deaths to feast on the blooming bacteria. Often, more than one worm species either affiliates with the insect or joins the microbial meal; thus, competition over limited food ensues, and phenotypic plasticity provides perks for species capable of employing polyphenisms. The recently established system of cockchafer Gymnogaster bupthalma and its occasional co-infestation of Pristionchus mayeri and Acrostichus spp. has revealed that these worms will simultaneously utilize two polyphenisms to thrive in a competitive environment. While both genera maintain plastic capacities in mouth form (strictly bacterial-feeding and omnivorous predation) and developmental pathway (direct and arrested development, dauer), P. mayeri employs both when faced with competition from Acrostichus. Here, we took advantage of the malleable system and added a third competitor, model nematode Pristionchus pacificus. Intriguingly, with a third competitor, P. mayeri is quicker to exit dauer and devour available food, while Acrostichus hides in dauer, waiting for the two Pristionchus species to leave the immediate environment before resuming development. Thus, experimental manipulation of short-lived ecosystems can be used to study the roles of polyphenisms in organismal interactions and their potential significance for evolution.

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Section: Discussionmentioning

confidence: 99%

Multidimensional competition of nematodes affects plastic traits in a beetle ecosystem

Renahan

Sommer

2022

Front. Cell Dev. Biol.

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“…Acrostichus have been reported from a wide range of habitats including fresh and polluted water, aquatic mulm and sewage [23]. A. nudicapitatus also is a widely distributed species reported from polluted water, dung as well as bark beetles [24]. Halicephalobus is a bacterial-feeding nematode that inhabits soil, soil-like environments and organic-rich substrates [5,25,26].…”

Section: Nematode Successionmentioning

confidence: 99%

Next-Generation Sequencing for Evaluating the Soil Nematode Diversity and Its Role in Composting Processes

Zapałowska,

Skwiercz,

Tereba

et al. 2023

IJMS

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Biodiversity within composting systems involves a variety of microorganisms including nematodes. In the research, nematode populations were monitored within six simultaneously operating composting processes. These processes involved varying proportions of feedstock materials. The primary objective was to evaluate the consistency of nematode community succession patterns across the composting processes over a time of 3 months. During the study, samples were taken every month to isolate nematodes, determine the population density of the five trophic groups (per genus) and determine the dominant nematode species. It was shown that the bacterial-feeding community maintained dominance, while the fungus-feeding nematodes gradually increased in dominance as the maturation process progressed. The presence of predatory nematodes Mononchoides which were initially absent, along with the total absence of parasitic nematodes in the late stages of waste stabilization, serves as strong evidence for the reliable evaluation of the biodegradable waste processing level. Based on the obtained results, it is evident that the succession of nematode communities holds promise as a reliable method for evaluating compost maturity.

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Description and developmental biology of the predatory diplogastridAcrostichus nudicapitatus(Steiner, 1914) Massey, 1962 (Nematoda: Rhabditida)

Cited by 2 publications

References 23 publications

Multidimensional competition of nematodes affects plastic traits in a beetle ecosystem

Multidimensional competition of nematodes affects plastic traits in a beetle ecosystem

Next-Generation Sequencing for Evaluating the Soil Nematode Diversity and Its Role in Composting Processes

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