<abstract xmlns="http://www.w3.org/1999/xhtml"><p>During a survey in western Venezuela in 2011, three new populations of <italic>Heterorhabditis amazonensis</italic> (LPV08l, LPV156, and LPV498) were isolated. Some differences were found in terms of morphometry compared with the original description; however, the distance from the anterior end to the excretory pore is the most variable character; significantly shorter in all infective juveniles and in other developmental stages depending on the population. According to a Principal Component Analysis, LPV498 possesses more differences in morphometric characteristics and can be separated from the other two. Those intraspecific differences could be attributed to the geographic origin of the nematode. Molecular studies of iTs regions demonstrated that the sequences of the Venezuelan strains were identical to those of the type species originally isolated in the Brazilian Amazonian forest. This is an interesting fact because in several studies on heterorhabditids, intraspecific variability has been recorded. Herein, we present the first report of <italic>H. amazonensis</italic> in Venezuela and the characterization of three populations of this species.</p></abstract>

During a survey in western Venezuela in 2011, three new populations of Heterorhabditis amazonensis (LPV08l, LPV156, and LPV498) were isolated. Some differences were found in terms of morphometry compared with the original description; however, the distance from the anterior end to the excretory pore is the most variable character; significantly shorter in all infective juveniles and in other developmental stages depending on the population. According to a Principal Component Analysis, LPV498 possesses more differences in morphometric characteristics and can be separated from the other two. Those intraspecific differences could be attributed to the geographic origin of the nematode. Molecular studies of iTs regions demonstrated that the sequences of the Venezuelan strains were identical to those of the type species originally isolated in the Brazilian Amazonian forest. This is an interesting fact because in several studies on heterorhabditids, intraspecific variability has been recorded. Herein, we present the first report of H. amazonensis in Venezuela and the characterization of three populations of this species.

First Report of <italic>Heterorhabditis amazonensis</italic> from Venezuela and Characterization of Three Populations

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

First Report of  from Venezuela and Characterization of Three Populations

During a survey in western Venezuela in 2011, three new populations of Heterorhabditis amazonensis (LPV08l, LPV156, and LPV498) were isolated. Some differences...

First Report of Heterorhabditis amazonensis from Venezuela and Characterization of Three Populations

Published Online: Jul 21, 2017

Page range: 139 - 147

Received: Apr 18, 2016

DOI: https://doi.org/10.21307/jofnem-2017-021

Keywords
biogeography, entomopathogenic nematode, morphology, Venezuela

© 2016 Naiyulin Morales et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

First Report of Heterorhabditis amazonensis from Venezuela and Characterization of Three Populations

Published Online: Jul 21, 2017

Page range: 139 - 147

Received: Apr 18, 2016

DOI: https://doi.org/10.21307/jofnem-2017-021

Keywordsbiogeography, entomopathogenic nematode, morphology, Venezuela

© 2016 Naiyulin Morales et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
biogeography, entomopathogenic nematode, morphology, Venezuela