A generalized population dynamics model for reproductive interference with absolute density dependence

Abstract Interspecific mating interactions, or reproductive interference, can affect population dynamics, species distribution and abundance. Previous population dynamics models have assumed that the impact of frequency-dependent reproductive interference depends on the relative abundances of specie...

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Autores principales:	Daisuke Kyogoku, Teiji Sota
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a7c304dec16e43f1ab309cf18b662a75
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id	oai:doaj.org-article:a7c304dec16e43f1ab309cf18b662a75
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spelling	oai:doaj.org-article:a7c304dec16e43f1ab309cf18b662a752021-12-02T16:08:08ZA generalized population dynamics model for reproductive interference with absolute density dependence10.1038/s41598-017-02238-62045-2322https://doaj.org/article/a7c304dec16e43f1ab309cf18b662a752017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02238-6https://doaj.org/toc/2045-2322Abstract Interspecific mating interactions, or reproductive interference, can affect population dynamics, species distribution and abundance. Previous population dynamics models have assumed that the impact of frequency-dependent reproductive interference depends on the relative abundances of species. However, this assumption could be an oversimplification inappropriate for making quantitative predictions. Therefore, a more general model to forecast population dynamics in the presence of reproductive interference is required. Here we developed a population dynamics model to describe the absolute density dependence of reproductive interference, which appears likely when encounter rate between individuals is important. Our model (i) can produce diverse shapes of isoclines depending on parameter values and (ii) predicts weaker reproductive interference when absolute density is low. These novel characteristics can create conditions where coexistence is stable and independent from the initial conditions. We assessed the utility of our model in an empirical study using an experimental pair of seed beetle species, Callosobruchus maculatus and Callosobruchus chinensis. Reproductive interference became stronger with increasing total beetle density even when the frequencies of the two species were kept constant. Our model described the effects of absolute density and showed a better fit to the empirical data than the existing model overall.Daisuke KyogokuTeiji SotaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Daisuke Kyogoku Teiji Sota A generalized population dynamics model for reproductive interference with absolute density dependence
description	Abstract Interspecific mating interactions, or reproductive interference, can affect population dynamics, species distribution and abundance. Previous population dynamics models have assumed that the impact of frequency-dependent reproductive interference depends on the relative abundances of species. However, this assumption could be an oversimplification inappropriate for making quantitative predictions. Therefore, a more general model to forecast population dynamics in the presence of reproductive interference is required. Here we developed a population dynamics model to describe the absolute density dependence of reproductive interference, which appears likely when encounter rate between individuals is important. Our model (i) can produce diverse shapes of isoclines depending on parameter values and (ii) predicts weaker reproductive interference when absolute density is low. These novel characteristics can create conditions where coexistence is stable and independent from the initial conditions. We assessed the utility of our model in an empirical study using an experimental pair of seed beetle species, Callosobruchus maculatus and Callosobruchus chinensis. Reproductive interference became stronger with increasing total beetle density even when the frequencies of the two species were kept constant. Our model described the effects of absolute density and showed a better fit to the empirical data than the existing model overall.
format	article
author	Daisuke Kyogoku Teiji Sota
author_facet	Daisuke Kyogoku Teiji Sota
author_sort	Daisuke Kyogoku
title	A generalized population dynamics model for reproductive interference with absolute density dependence
title_short	A generalized population dynamics model for reproductive interference with absolute density dependence
title_full	A generalized population dynamics model for reproductive interference with absolute density dependence
title_fullStr	A generalized population dynamics model for reproductive interference with absolute density dependence
title_full_unstemmed	A generalized population dynamics model for reproductive interference with absolute density dependence
title_sort	generalized population dynamics model for reproductive interference with absolute density dependence
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a7c304dec16e43f1ab309cf18b662a75
work_keys_str_mv	AT daisukekyogoku ageneralizedpopulationdynamicsmodelforreproductiveinterferencewithabsolutedensitydependence AT teijisota ageneralizedpopulationdynamicsmodelforreproductiveinterferencewithabsolutedensitydependence AT daisukekyogoku generalizedpopulationdynamicsmodelforreproductiveinterferencewithabsolutedensitydependence AT teijisota generalizedpopulationdynamicsmodelforreproductiveinterferencewithabsolutedensitydependence
_version_	1718384614742949888

A generalized population dynamics model for reproductive interference with absolute density dependence

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