Resource Holding Potential and the Outcome of Aggressive Interactions between Paired Male Aegus chelifer chelifer (Coleoptera: Lucanidae) Stag Beetles

Songvorawit, Nut; Butcher, Buntika A.; Chaisuekul, Chatchawan

doi:10.1007/s10905-018-9683-z

Cited by 10 publications

(14 citation statements)

References 35 publications

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“…One group of insects with an amazing diversity of weapons is stag beetles (Lucanidae). Male stag beetles use their exaggerated mandibles as weapons to fight for access to sap sites, territory and females [1,[5][6][7]. Mandible and body size are reliable indicators of male stag beetles' resource holding potential (RHP) and positively correlate with their ability to win in contests [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Male stag beetles use their exaggerated mandibles as weapons to fight for access to sap sites, territory and females [1,[5][6][7]. Mandible and body size are reliable indicators of male stag beetles' resource holding potential (RHP) and positively correlate with their ability to win in contests [6][7][8]. Stag beetles exhibit a high diversity in the sizes and shapes of mandibles both within and across species [1,[9][10][11] which might cause the behaviour they display in fighting contests to be highly variable [1].…”

Section: Introductionmentioning

confidence: 99%

“…There are approximately 1200 species of stag beetles in the world [23]. So far, fighting behaviour has only been reported for five species, namely, Cyclommatus mniszechi [8], C. metallifer [6], Lucanus maculifemoratus and Prosopocoilus inclinatus [24] and Aegus chelifer [7]. These studies indicate that the behavioural elements and sequences are highly variable both among and within species.…”

Section: Introductionmentioning

confidence: 99%

“…These studies indicate that the behavioural elements and sequences are highly variable both among and within species. The commonly used method for studying the contest interactions of stag beetles includes (1) placing two males some distance apart on a horizontal tree log [6,8] and 2allowing the study animals a short time period (≤15-60 min) to acclimatise [6][7][8]24]. This method does not appear to be suitable for investigating the contest behaviour of C. mniszechi because 47% of the contest pairs failed to interact [8].…”

Section: Introductionmentioning

confidence: 99%

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Allometry and Fighting Behaviour of a Dimorphic Stag Beetle Cyclommatus mniszechi (Coleoptera: Lucanidae)

Chen

Hsu

Lin

2020

Insects

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Male stag beetles (Coleoptera: Lucanidae) use their mandibles as weapons to compete for resources and reproduction. Mandible size in stag beetles can be associated with different behaviours and the outcome of male contests. We investigated the allometric relationship between mandible and body size in males of the stag beetle Cyclommatus mniszechi to uncover distinct morphs. The results divided male C. mniszechi into majors and minors with the switch point of mandible length at 14.01 mm. The allometric slope of mandibles was positive for both morphs but was steeper for the minors. We also characterised the fighting behaviour of the different morphs in size-matched contests using sequential analyses. Males matched each other’s behaviour in contests with many physical contacts, no injury and a progression from low towards high aggression and rare de-escalation. Major and minor males employed the same behavioural elements in contests, but major males were more likely to escalate directly into more aggressive phases and minor males tended to stay within phases. This finding suggests that major males may compete more aggressively than minor males in contests.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Allometry and Fighting Behaviour of a Dimorphic Stag Beetle Cyclommatus mniszechi (Coleoptera: Lucanidae)

Chen

Hsu

Lin

2020

Insects

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“…This is termed resource-holding potential (RHP) [41,42]. For example, stag beetle males have larger mandibles, and larger crickets have higher aggressiveness and higher RHP [34,35,43,44]. Larger fish nests and fish males have higher RHP and higher reproductive success rates [45], and larger invasive fish have higher RHP than small native fish [46].…”

Section: Spread Effect Of V Velutina On Interspecific Competition Inmentioning

confidence: 99%

Interspecific hierarchies from aggressiveness and body size among the invasive alien hornet,Vespa velutina nigrithorax, and five native hornets in South Korea

Choi

Kwon

2019

Preprint

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The range of the invasive alien hornet, Vespa velutina nigrithorax, has been continuously expanding since its invasion of Korea in 2003. Here, we compared the aggressive behaviors and body size of V. velutina nigrithorax with five native hornet species to identify the interspecific hierarchies that contributes to the spread of this species. Aggressive behaviors were classified into 11 categories and each interaction was scored as a win, loss, or tie. As a result, V. velutina was superior to V. simillima in 153 fights where V. velutina won 71% and showed a high incidence of threatening behavior. V. mandarinia outperformed V. velutina in 104 fights where V. mandarinia won 91% and grappling behavior was common. V. analis was superior to V. velutina in 67 fights where V. analis won 76% and showed a high amount of threatening behavior. V. crabro was superior to V. velutina in 93 fights where V. crabro won 73% and showed a high rate of threatening behavior. V. dybowskii was superior to V. velutina in 132 fights where V. dybowskii won 91%, and showed a high rate of threatening and grappling behaviors. The body size of V.velutina was larger than V. simillima (although not statistically significant) and smaller than all other Vespa species. Therefore, according to the results of this study, the low interspecific hierarchies of V. velutina seems to be a major cause of slower spreading rates than it has shown in Europe. However, over time, its density has gradually increased within the forest, in which it seems to be overcoming its disadvantages and expanding its range, possibly as large colonies and good flying abilities make it easier to secure food.

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Size Does Not Matter: Same-Sex Sexual Behavior Occurred Regardless of Mandible Size in Male Stag Beetle Aegus chelifer chelifer (Coleoptera: Lucanidae)

2019

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Resource Holding Potential and the Outcome of Aggressive Interactions between Paired Male Aegus chelifer chelifer (Coleoptera: Lucanidae) Stag Beetles

Cited by 10 publications

References 35 publications

Allometry and Fighting Behaviour of a Dimorphic Stag Beetle Cyclommatus mniszechi (Coleoptera: Lucanidae)

Allometry and Fighting Behaviour of a Dimorphic Stag Beetle Cyclommatus mniszechi (Coleoptera: Lucanidae)

Interspecific hierarchies from aggressiveness and body size among the invasive alien hornet,Vespa velutina nigrithorax, and five native hornets in South Korea

Size Does Not Matter: Same-Sex Sexual Behavior Occurred Regardless of Mandible Size in Male Stag Beetle Aegus chelifer chelifer (Coleoptera: Lucanidae)

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