Occurrence of Belonolaimus in Sinaloa, Northwestern Mexico: A New Report on Distribution and Host Range
| Autor: | Manuel Mundo-Ocampo, Tiago José Pereira, Adolfo Dagoberto Armenta-Bojórquez, J. O. Becker, James G. Baldwin, Jesús Ricardo Camacho-Báez, M. Camacho-Haro |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Species complex Population 010607 zoology Introduced species phylogeny Belonolaimus 01 natural sciences 03 medical and health sciences Monophyly Genus morphology Clade education Mexico lcsh:QH301-705.5 education.field_of_study biology host–parasite relationships Ecology Belonolaimus longicaudatus biology.organism_classification Contributed Paper 030104 developmental biology lcsh:Biology (General) |
| Zdroj: | Journal of Nematology, Vol 49, Iss 1 (2017) |
| ISSN: | 2640-396X |
| DOI: | 10.21307/jofnem-2017-050 |
| Popis: | The present study reports the occurrence of the genus Belonolaimus in the state of Sinaloa, Mexico, associated with native plants (i.e., Ziziphus amole and Stenocereus alamosensis) in a natural coastal ecosystem. Both morphological and molecular approaches were employed to characterize the Sinaloa population. Notwithstanding of some morphological and morphometric variation between Belonolaimus from Sinaloa and other valid species, the characterization indicates that this population might belong to the Belonolaimus longicaudatus species complex. Molecular analyses based on the 28S gene and ITS1-5.8S-ITS2 regions of the ribosomal RNA (rRNA) identified four major clades within Belonolaimus; however, none of the species including B. longicaudatus, B. gracilis, and B. euthychilus were supported as monophyletic; yet monophyly is argued to be a basic requirement of species status. Sequence divergence among different Belonolaimus populations and species varied according to the rRNA dataset (i.e., ITS1-5.8S-ITS2 . 28S . 18S) used, thus showing the importance of using genes with different rates of evolution to estimate species relationships. The fact that Belonolaimus has not been found in other cultivated (including on suitable hosts) areas in Sinaloa and that this population is relatively distant from the common B. longicaudatus groups (i.e., clades A and B) suggests that its appearance was not due to a recent introduction associated with the local agriculture. |
| Databáze: | OpenAIRE |
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