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Title: Sexual reproduction and diversity: Connection between sexual selection and biological communities via population dynamics
Authors: Kobayashi, Kazuya
Author's alias: 小林, 和也
Keywords: biological community
density dependence
intraspecific competition
population dynamics
sexual selection
Issue Date: Apr-2019
Publisher: Wiley
Journal title: Population Ecology
Volume: 61
Issue: 2
Start page: 135
End page: 140
Abstract: Sexual reproduction is a mysterious phenomenon. Most animals and plants invest in sexual reproduction, even though it is more costly than asexual reproduction. Theoretical studies suggest that occasional or conditional use of sexual reproduction, involving facultative switching between sexual and asexual reproduction, is the optimal reproductive strategy. However, obligate sexual reproduction is common in nature. Recent studies suggest that the evolution of facultative sexual reproduction is prevented by males that coerce females into sexual fertilization; thus, sexual reproduction has the potential to enforce costs on a given species. Here, the effect of sex on biodiversity is explored by evaluating the reproductive costs arising from sex. Sex provides atypical selection pressure that favors traits that increase fertilization success, even at the expense of population growth rates, that is, sexual selection. The strength of sexual selection depends on the density of a given species. Sexual selection often causes strong negative effects on the population growth rates of species that occur at high density. Conversely, a species that reduces its density is released from this negative effect, and so increases its growth rate. Thus, this negative density‐dependent effect on population growth that arises from sexual selection could be used to rescue endangered species from extinction, prevent the overgrowth of common species and promote the coexistence of competitive species. Recent publications on sexual reproduction provide several predictions related to the evolution of reproductive strategies, which is an important step toward integrating evolutionary dynamics, demographic dynamics and community dynamics.
Rights: This is the peer reviewed version of the following article: Kobayashi, K. Sexual reproduction and diversity: Connection between sexual selection and biological communities via population dynamics. Popul. Ecol. 2019; 61: 135– 140., which has been published in final form at https://doi.org/10.1002/1438-390X.1029. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
The full-text file will be made open to the public on 2 April 2020 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/240844
DOI(Published Version): 10.1002/1438-390X.1029
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