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Reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species

Competitive interaction between sister species can be affected by reproductive interference (RI) depending on the ability of males to discriminate conspecific from heterospecific mates. We study such interactions in Tetranychus evansi and T. urticae. These spider mites co-occur on solanaceous plants...

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Autores principales: Sato, Yukie, Alba, Juan M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7203586/
https://www.ncbi.nlm.nih.gov/pubmed/32307618
http://dx.doi.org/10.1007/s10493-020-00492-4
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author Sato, Yukie
Alba, Juan M.
author_facet Sato, Yukie
Alba, Juan M.
author_sort Sato, Yukie
collection PubMed
description Competitive interaction between sister species can be affected by reproductive interference (RI) depending on the ability of males to discriminate conspecific from heterospecific mates. We study such interactions in Tetranychus evansi and T. urticae. These spider mites co-occur on solanaceous plants in Southern Europe, and cause important yield losses in tomato crops. Previous studies using Spanish populations found that T. evansi outcompetes T. urticae, and that this is due to unidirectional RI of T. evansi males with T. urticae females. The unidirectional RI is attributed to differences in male mate preference for conspecific females between the two species. Also, differences in the propensity of interspecific web sharing in females plays a role. To investigate proximate mechanisms of this RI, here we study the role of female pheromones on male mate preference and female web sharing. We extracted pheromones from females of the two species, and investigated if males and females were arrested by the pheromone extractions in various concentrations. We observed that T. urticae males were more sensitive to the pheromone extractions and able to discriminate conspecific from heterospecific ones. Tetranychus evansi males, on the other hand, were less sensitive. Females from both species were arrested by conspecific pheromone extraction in lower concentrations. In conclusion, heterospecific mating by T. evansi males, which results in RI, can be explained by their lack of discrimination between female pheromones of the two species. Differences in the propensity of interspecific web sharing in females might not be explained by the pheromones that we investigated.
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spelling pubmed-72035862020-05-12 Reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species Sato, Yukie Alba, Juan M. Exp Appl Acarol Article Competitive interaction between sister species can be affected by reproductive interference (RI) depending on the ability of males to discriminate conspecific from heterospecific mates. We study such interactions in Tetranychus evansi and T. urticae. These spider mites co-occur on solanaceous plants in Southern Europe, and cause important yield losses in tomato crops. Previous studies using Spanish populations found that T. evansi outcompetes T. urticae, and that this is due to unidirectional RI of T. evansi males with T. urticae females. The unidirectional RI is attributed to differences in male mate preference for conspecific females between the two species. Also, differences in the propensity of interspecific web sharing in females plays a role. To investigate proximate mechanisms of this RI, here we study the role of female pheromones on male mate preference and female web sharing. We extracted pheromones from females of the two species, and investigated if males and females were arrested by the pheromone extractions in various concentrations. We observed that T. urticae males were more sensitive to the pheromone extractions and able to discriminate conspecific from heterospecific ones. Tetranychus evansi males, on the other hand, were less sensitive. Females from both species were arrested by conspecific pheromone extraction in lower concentrations. In conclusion, heterospecific mating by T. evansi males, which results in RI, can be explained by their lack of discrimination between female pheromones of the two species. Differences in the propensity of interspecific web sharing in females might not be explained by the pheromones that we investigated. Springer International Publishing 2020-04-19 2020 /pmc/articles/PMC7203586/ /pubmed/32307618 http://dx.doi.org/10.1007/s10493-020-00492-4 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Sato, Yukie
Alba, Juan M.
Reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species
title Reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species
title_full Reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species
title_fullStr Reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species
title_full_unstemmed Reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species
title_short Reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species
title_sort reproductive interference and sensitivity to female pheromones in males and females of two herbivorous mite species
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7203586/
https://www.ncbi.nlm.nih.gov/pubmed/32307618
http://dx.doi.org/10.1007/s10493-020-00492-4
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