Ultrastructure of spermatozoa of a hairworm<i>Gordionus alpestris</i>(Villot, 1885) (Nematomorpha, Chordodidae)

Sokolova, Elena A.; Zograf, Julia K.; Yushin, Vladimir V.

doi:10.1080/07924259.2022.2039308

Cited by 2 publications

(3 citation statements)

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“…This difference might suggest divergent metabolic strategies between these two groups, warranting further investigation to elucidate the underlying mechanisms and ecological implications. The sensorium in Nematomorpha is practically unknown and the question of how hairworms find mates for internal insemination has never been satisfactorily answered Sokolova et al . (2022).…”

Section: Discussionmentioning

confidence: 99%

“…Mermithid adults are armed with a variety of sensory structures and likely engage them in host-finding (Robinson et al 1990) and mate-finding (Burr and Babinszki 1990;Burr et al 2000). Our knowledge of the receptors present in Nematomorpha is limitedexisting ultrastructural studies provide minimal insights into their functionality and role (Schmidt-Rhaesa 2004;Sokolova et al 2022).…”

Section: Introductionmentioning

confidence: 99%

“…2000). Our knowledge of the receptors present in Nematomorpha is limited – existing ultrastructural studies provide minimal insights into their functionality and role (Schmidt-Rhaesa 2004; Sokolova et al . 2022).…”

Section: Introductionmentioning

confidence: 99%

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Comparative genomics of parasitoid lifestyle as exemplified by Mermithidae and Nematomorpha

Kirangwa,

Bednarski,

Guiglielmoni

et al. 2024

Preprint

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Mermithidae and Nematomorpha are parasitoids united by the commonalities in their lifestyle – immature stages infect arthropod hosts, species from both phyla can manipulate their host to induce a similar water-seeking behaviour, and both have a final free-living non-feeding adult reproductive stage, often killing their host upon emergence. Some of these species are of great economic importance, being evaluated as biological control agents against mosquito vectors responsible for diseases like malaria, and other insect pests, but with scarce genomic resources currently available. Nematomorpha, despite being closely related to Nematoda, received insufficient attention in genomic research, leading to gaps in our understanding of their diverse genetic makeup. This study aimed to investigate the genetic features encoded in the genomes of both parasitoid taxa to identify similarities and parallels linked to their ecological lifestyles. We performed a comparative analysis of 12 genomes, comprising parasitoid, parasitic and free-living worms. The investigation revealed genomic signatures unique to parasitoid species, including expanded gene families enriched in neural transmission modulation, likely linked to the known host manipulation that both mermithids and nematomorphs exert on their hosts. The analysis also uncovered a diverse array of conserved transposable element superfamilies across both lineages. The findings from this study provide valuable insights into the potential genomic adaptations associated with parasitoidism in nematode and nematomorph worms. The identification of expanded gene families and conserved transposable element superfamilies sheds light on the molecular underpinnings of their unique biological traits. Additionally, the core set of orthologs specific to parasitoid worms offers new avenues for understanding the evolution of parasitism within these groups of organisms.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%