Age-dependent changes in calling effort in the bell cricket Meloimorpha japonica

Kuriwada, Takashi; Kasuya, Eiiti

doi:10.1007/s10164-010-0231-3

Cited by 10 publications

(4 citation statements)

References 36 publications

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“…Mountjoy & Lemon 1995; Cote et al. 2010; Lafaille, Bimbard & Greenfield 2010; Kuriwada & Kasuya 2011) and may represent terminal investment in some cases. Facultative increases in signalling by males experiencing an acute survival threat also imply terminal investment; putative examples include the augmented courtship activity of male Drosophila nigrospiracula parasitized by mites (Polak & Starmer 1998) and the heightened aggression and attractiveness of male Peromyscus leucopus mice harbouring botflies (Cramer & Cameron 2007).…”

Section: Introductionmentioning

confidence: 99%

Terminal investment in multiple sexual signals: immune‐challenged males produce more attractive pheromones

Nielsen¹,

Holman²

2011

Functional Ecology

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Summary 1.Trade-offs between current and future resource allocation can select for elevated reproductive effort in individuals facing mortality. Males are predicted to benefit from increasing investment in costly sexually selected signals after experiencing an acute life span reduction, although few examples of such facultative terminal investment are known. 2. In the mealworm beetle, Tenebrio molitor, males' odours become more attractive to females following a life-threatening immune challenge. However, the pheromones involved are unknown, hindering further insight into the proximate mechanisms and ultimate consequences of terminal investment. 3. Using chemical and behavioural analyses, we show that the cuticular hydrocarbons (CHCs) of T. molitor are sexually dimorphic and are used by females to locate and select males. Moreover, both male CHCs and glandular pheromones were affected by experimental immune challenge in a fashion that made them more attractive to females. 4. The results suggest that males terminally invest in both short-and medium-range pheromones when they perceive reduced future survival. Moreover, the constitutive and inducible aspects of male and female CHC production are consistent with sex-specific selection on the signalling and defensive functions of CHCs. The implications of terminal investment for 'dishonest' signalling and the efficacy of sexual selection are discussed.

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Section: Introductionmentioning

confidence: 99%

Terminal investment in multiple sexual signals: immune‐challenged males produce more attractive pheromones

Nielsen¹,

Holman²

2011

Functional Ecology

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“…As a result, younger males pay greater costs than older ones when they are killed or injured (Williams, 1966; Charlesworth & Leon, 1976; Clutton‐Brock, 1984). Most studies on life‐history theory focus on quantifiable aspects of mating behaviour such as female reproductive investment and male courtship signals (Poizat et al , 1999; Kemp, 2002; Hunt et al , 2004; Kuriwada & Kasuya, 2006, 2011; Judge et al , 2008). Less quantifiable factors, such as anti‐predatory behaviours, have received little attention.…”

Section: Introductionmentioning

confidence: 99%

“…Tel. : +81 98 886 3880; e-mail: t.kuriwada@gmail.com as female reproductive investment and male courtship signals (Poizat et al, 1999;Kemp, 2002;Hunt et al, 2004;Kuriwada & Kasuya, 2006, 2011Judge et al, 2008). Less quantifiable factors, such as anti-predatory behaviours, have received little attention.…”

Section: Introductionmentioning

confidence: 99%

Age‐dependent investment in death‐feigning behaviour in the sweetpotato weevil Cylas formicarius

Kuriwada

Kumano

Shiromoto

et al. 2011

Physiological Entomology

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Because life-history theory predicts that risky behaviours such as mating should increase as life expectancy decreases, predatory avoidance is expected to decrease with age. However, this prediction has not been examined. In the present study, the effect of age on death-feigning behaviour, a form of predatory avoidance behaviour in the sweetpotato weevil Cylas formicarius (Summers) (Coleoptera: Brentidae), is investigated by performing a longitudinal study. Because the effects of mating history and age usually cannot be distinguished, mating history is controlled. The results show that only female weevils decrease the investment in death-feigning behaviour with age, whereas male weevils do not show any age-related change. In addition, death-feigning behaviour of mated females is longer than that of virgin females, possibly because additional mating partners would be not needed by mated females.

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“…An increase in signaling as courters aged was observed in Meloimorpha japonica (bell cricket). This finding is similar to Bertram et al's (2021) findings on G. assimilis, as they found that the degree of change in time spent calling was positively correlated with courter body weight, indicating that older and better-quality males were better able to invest more resources into mating than younger or poor-quality males (Kuriwada & Kasuya, 2011). However, some studies suggest that older courters decrease the energetic investment in their mate attraction signals, as their syllable duration, calling bout duration and amplitude decrease, while the silent portions in their calls simultaneously increase in duration (Verburgt et al, 2011).…”

Section: Chapter 1 -How Acoustic Mate Attraction Signaling Is Influen...supporting

confidence: 86%

Signaling Vigor in Gryllodes Sigillatus: Relationship with Age and Foreign Body Ingestion

Froome¹

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Male Gryllidae acoustic signaling behaviour varies between and within species and may be influenced by a variety of factors including age, condition, and parasitism. I investigated variation within and among male Gryllodes sigillatus' mate attraction signaling behaviour and examined how variation in signaling vigour was influenced by age. I found extensive variation in male signaling between and within individuals; males differed in signaling vigour and quality, and their signaling changed over time. I found that smaller males signaled more consistently throughout their lives while larger males rarely called when younger and increased signaling vigour with age. As males have often been found to honestly signal their body condition (i.e., body mass), parasites may influence a male's perceived attractiveness to potential mates. I therefore also investigated how signaling vigour was influenced by the ingestion of the long barbed hastisetae from a typical pest species, dermestid (Dermestes ater), that plagues rearing facilities. These foreign bodies are regularly ingested during rearing. I found that males fed the highest concentration of dermestid hastisetae behaved differently than males in the control and high treatments. As individuals aged, smaller males greatly increased their signaling vigour and produced more attractive calls while larger males decreased their signaling vigour and produced less attractive calls. While further investigation into Gryllodes sigillatus signaling behaviour is needed, my results provide interesting insights into the factors shaping signaling variation in this species. Alyssa Froome Master of Science Fall 2022 iii Acknowledgements I am grateful to the Department of Biology at Carleton University for their assistance throughout my Master's education. I would like to personally thank Ed Bruggink and Dr. Genevieve Ferguson for helping with greenhouse maintenance and equipment repairs. I would also like to thank my committee members Drs. Gita Kolluru and Roslyn Dakin for providing invaluable feedback. I would like to extend a huge thank you to my supervisor Dr. Sue Bertram. She has provided me with unending guidance and support over the last five years and has pushed me to be a better researcher, scientist and student. The countless hours of meetings, editing and educating that she has invested over the course of my education is invaluable. She never lost faith even when every single bad thing that could happen did. Without her belief in me, guidance and support I would never have made it to where I am now. I would like to thank all members of the Bertram lab who have helped over the past few years. I would like to thank Mahir Awsaf, Emma McConnell and Olivia Gagnon who helped me immensely with cricket care, photographing and measuring. I would like to personally thank Matt Muzzatti for always being there to answer my questions, and for all his help on our joint dermestid research. Matt has taught me so much, especially (mostly against my will) about 'bugs'; I may never fully recover fr...

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Age-dependent changes in calling effort in the bell cricket Meloimorpha japonica

Cited by 10 publications

References 36 publications

Terminal investment in multiple sexual signals: immune‐challenged males produce more attractive pheromones

Terminal investment in multiple sexual signals: immune‐challenged males produce more attractive pheromones

Age‐dependent investment in death‐feigning behaviour in the sweetpotato weevil Cylas formicarius

Signaling Vigor in Gryllodes Sigillatus: Relationship with Age and Foreign Body Ingestion

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