Size Matters – Correlation of Body Size, Structure of Sternal Glands and Mating Success in Echinothrips Americanus (Thysanoptera: Thripidae)

Size Matters – Correlation of Body Size, Structure of Sternal Glands and Mating Success in... Females of many insect species analyse and select specific male signals for possible mates. Mate choice can benefit fecundity and survival of females, or have an indirect effect by providing optimal genes. Assortative mating by size is one of the most commonly observed sexual behaviors. Additionally, chemical cues may be detected by females, as these can also be indicators of body size and condition. Little is known about mate choice behavior among Thysanoptera. The mating system of Echinothrips americanus (Thysanoptera, Thripidae) is characterized by a strong competition for mates, leading to assortative mating. In this species very prominent gland structures are located on sternites III to VIII, of which the function still remains unknown. However, given the individual differences in expression of the gland release areas, a probable role in mate selection is postulated. In this study, we are interested in possible correlations between male body size, gland release areas, glandular substances, and mating success. Additionally, we used an experimental approach to test for a possible function in mate-assessment, or as an anti-aphrodisiac. Whereas pronotum length, distance between 1st and 2nd coxa, as well as total sternite area show a significant correlation with mating success, no direct correlation with sternal gland structures was observed. Furthermore, we failed to constitute a mate-assessment or anti-aphrodisiac-like function of sternal gland products. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Insect Behavior Springer Journals

Size Matters – Correlation of Body Size, Structure of Sternal Glands and Mating Success in Echinothrips Americanus (Thysanoptera: Thripidae)

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Life Sciences; Entomology; Behavioral Sciences; Neurobiology; Agriculture; Animal Ecology; Evolutionary Biology
ISSN
0892-7553
eISSN
1572-8889
D.O.I.
10.1007/s10905-017-9627-z
Publisher site
See Article on Publisher Site

Abstract

Females of many insect species analyse and select specific male signals for possible mates. Mate choice can benefit fecundity and survival of females, or have an indirect effect by providing optimal genes. Assortative mating by size is one of the most commonly observed sexual behaviors. Additionally, chemical cues may be detected by females, as these can also be indicators of body size and condition. Little is known about mate choice behavior among Thysanoptera. The mating system of Echinothrips americanus (Thysanoptera, Thripidae) is characterized by a strong competition for mates, leading to assortative mating. In this species very prominent gland structures are located on sternites III to VIII, of which the function still remains unknown. However, given the individual differences in expression of the gland release areas, a probable role in mate selection is postulated. In this study, we are interested in possible correlations between male body size, gland release areas, glandular substances, and mating success. Additionally, we used an experimental approach to test for a possible function in mate-assessment, or as an anti-aphrodisiac. Whereas pronotum length, distance between 1st and 2nd coxa, as well as total sternite area show a significant correlation with mating success, no direct correlation with sternal gland structures was observed. Furthermore, we failed to constitute a mate-assessment or anti-aphrodisiac-like function of sternal gland products.

Journal

Journal of Insect BehaviorSpringer Journals

Published: Jun 28, 2017

References

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