Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/24509
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Mating opportunities and energetic constraints drive variation in age-dependent sexual signalling
Authors: Houslay, Thomas
Houslay, Kirsty F
Rapkin, James
Hunt, John
Bussiere, Luc
Contact Email: luc.bussiere@stir.ac.uk
Keywords: condition dependence
life history
phenotypic plasticity
sexual selection
trade-offs
Issue Date: Mar-2017
Citation: Houslay T, Houslay KF, Rapkin J, Hunt J & Bussiere L (2017) Mating opportunities and energetic constraints drive variation in age-dependent sexual signalling, Functional Ecology, 31 (3), pp. 728-741.
Abstract: * When males repeatedly produce energetically expensive sexual signals, trade-offs between current and future investment can cause plasticity in age-dependent signalling. Such variation is often interpreted as alternate adaptive strategies: live fast and die young vs. slow and steady.  * An alternative (yet rarely tested) explanation is that condition-dependent constraints on allocation cause variation in signalling with age (‘late bloomers’ do not have early investment options). Testing this hypothesis is challenging because resource acquisition and allocation are difficult to measure, and energetic reserves both affect and are affected by reproductive effort.  * We simultaneously manipulated acquisition (through dietary nutrition) and access to potential mates (as a proxy for manipulating sexual trait allocation) in male decorated crickets (Gryllodes sigillatus), while measuring age- and signalling effort-mediated changes in energy storage components.  * Increased diet quality caused increased signalling effort and energy storage, while access to females increased both the likelihood of and time spent signalling. Males with lower resource budgets signalled less, but still suffered energetic storage loss and viability costs.  * Our results suggest that energetic constraints, rather than strategic resource accumulation, reduced signalling levels in males with lower resource acquisition ability. Our findings imply a non-adaptive explanation for age-dependent variation in sexual signalling, and an important role for energetic constraints in maintaining the honesty of costly behavioural displays.
DOI Link: http://dx.doi.org/10.1111/1365-2435.12766
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. This is the peer reviewed version of the following article: ouslay, T. M., Houslay, K. F., Rapkin, J., Hunt, J. and Bussière, L. F. (2017), Mating opportunities and energetic constraints drive variation in age-dependent sexual signalling. Funct Ecol, 31: 728–741, which has been published in final form at https://doi.org/10.1111/1365-2435.12766. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

Files in This Item:
File Description SizeFormat 
Houslay_FuncEcol_RevisedMS.pdf1.49 MBAdobe PDFUnder Embargo until 11/10/2017     Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependent on the depositor still being contactable at their original email address.



This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.