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A molecular evolutionary framework for the phylum Nematoda
TLDR
It is suggested that animal parasitism arose independently at least four times, and plant parasitism three times, which indicates that convergent morphological evolution may be extensive and that present higher-level classification of the Nematoda will need revision.
Against the oxidative damage theory of aging: superoxide dismutases protect against oxidative stress but have little or no effect on life span in Caenorhabditis elegans.
TLDR
Findings imply that O(2)(-) is not a major determinant of aging in Caenorhabditis elegans, suggesting a signaling role for sod-4.
Intermediary metabolism.
TLDR
Dauer diapause is marked by an enhanced resistance to oxidative stress and a shift toward microaerobic and anaplerotic metabolic pathways and hypometabolism, as indicated by the increased importance of the malate dismutation and glyoxylate pathways and the repression of citric acid cycle activity.
Molecular phylogeny of the Tylenchina and evolution of the female gonoduct (Nematoda: Rhabditida).
TLDR
The present study confirms the sister relationship of the bacteriovore Cephalobidae with the predominantly plant-parasitic Tylenchomorpha and confirms the monophyletic position of the (super)families Hoplolaimidae and Criconematoidea were supported; Anguinidae, Tylfenchoidea, Belonolaimids and Pratylenchidae appeared to be paraphyletic or polyphyletic.
A molecular phylogeny of the Odonata (Insecta)
TLDR
Several recent taxonomic changes at the genus level, based on morphology, were confirmed, but other morphology‐based taxonomies have misclassified taxa considered currently as Megapodagrionidae, Platycnemididae and Amphipterygidae and have underestimated the number of family‐level clades.
An improved molecular phylogeny of the Nematoda with special emphasis on marine taxa.
TLDR
Small subunit ribosomal DNA (SSU rDNA) sequences for 100 previously un-sequenced species of nematodes, including 46 marine taxa are added and phylogenies provide support for the re-classification of the Secernentea as the order Rhabditida that derived from a common ancestor of chromadorean orders Araeolaimida, Chromadoria, Desmodorida, Desmoscolecida, and Monhysterida.
Phylogenetic relationships, divergence time estimation, and global biogeographic patterns of calopterygoid damselflies (odonata, zygoptera) inferred from ribosomal DNA sequences.
TLDR
A molecular phylogeny combined with a geographic analysis produced a well-supported phylogenetic hypothesis that partly confirms the traditional taxonomy and describes distributional patterns and a monophyletic origin of the calopterygoids emerges, revealing the Hetaerinid clade as sister group to the CalopteryGidae sensu strictu.
Life extension via dietary restriction is independent of the Ins/IGF-1 signalling pathway in Caenorhabditis elegans
TLDR
It is shown that both ADR and BDR act independently with mutations in the IIF pathway to increase longevity, stress resistance, and specific activities of superoxide dismutase and catalase.
DamID in C. elegans reveals longevity-associated targets of DAF-16/FoxO
TLDR
Using Chromatin profiling by DNA adenine methyltransferase identification (DamID), the efficacy of DamID for chromatin profiling in C. elegans is demonstrated and it is suggested that DAF‐16 acts within a relatively small transcriptional subnetwork activating other regulators of stress resistance and aging, rather than directly regulating terminal effectors of longevity.
Mitochondrial DNA variation and cryptic speciation within the free-living marine nematode Pellioditis marina
TLDR
It is suggested that autecological characteristics, including short generation time, high colonization potential and local adaptation, may be at the basis of this nematode's population genetic structure.
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