Related Experiment Video
Updated: Jun 25, 2026

Microfocus X-ray CT (microCT) Imaging of Actinia equina (Cnidaria), Harmothoe sp. (Annelida), and Xenoturbella japonica (Xenacoelomorpha)
Published on: August 6, 2019
Xiphinema krugi, Species Complex or Complex of Cryptic Species?
Claudio M G Oliveira1, Luiz C C B Ferraz, Roy Neilson
1Instituto Biológico, P.O. Box 70, 13001-970, Campinas, SP, Brazil ESALQ/USP, P.O. Box 09, 13418-900, Piracicaba, SP, Brazil Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA, Scotland.
Abstract:
Fourteen morphologically putative populations of X. krugi were clearly separated into four different profiles by RFLP analysis (Alu I and Hinf I), sequencing of the ITS-1 region, and subsequent Maximum Likelihood phylogenetic analyses. These four profiles were further supported by a principal component analysis of morphometric characters that yielded four taxonomic clusters matching those produced by the molecular data. Sequence homology was greater amongst populations that represented the same RFLP profile than between profiles and similar both between representative populations of the RFLP profiles and putative closely related Xiphinema species. This study suggests that X. krugi is a potential species complex comprised of at least four distinct genotypes.
More Related Videos
Related Concept Videos
Diversity of Protists III
Diversity of Protists II
Understanding Species and Reproductive Barriers
Phylogenetic Species Concept in Microbiology
Fungal Group Zygomycota
Diversity of Protists I

