Assessment strategy in male–male contests of the hermit crab Pagurus middendorffii

Yasuda, Chiaki I.; Takeshita, Fumio; Wada, Satoshi

doi:10.1016/j.anbehav.2012.05.007

Cited by 31 publications

(26 citation statements)

References 36 publications

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“…Garcia et al, 2012;Jennings, Elwood, Carlin, Hayden, & Gammell, 2012;Kasumovic, Mason, Andrade, & Elias, 2011;Lopes Junior & Cardoso Peixoto, 2013;McGinley, Prenter, & Taylor, 2015;Painting & Holwell, 2014;Palaoro, Dalosto, Costa, & Santos, 2014;Reichert & Gerhardt, 2011;Yasuda, Takeshita, & Wada, 2012). However, these studies have focused on morphological traits related to RHP.…”

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confidence: 96%

Aggressiveness as a component of fighting ability in pigs using a game-theoretical framework

et al. 2015

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Aggressiveness as a component of fighting ability in pigs using a game-theoretical framework

et al. 2015

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“…Part of the data from this experiment has been published as part of the paper by Yasuda et al (2012), which focused on the intruder males to demonstrate the change of assessment tactics and the index used by the intruder when the contest escalates from the pre-fight phase to the physical combat phase. The focus of the present paper is on the behavior of both owner and intruder, with analysis to identify which traits (propodus size of the major cheliped and/or body size) of the contestants (intruder and/or owner) determined whether or not the contest was escalated and the final outcome.…”

Section: Male-male Contest Experimentsmentioning

confidence: 99%

Rapid regeneration of the major cheliped in relation to its function in male-male contests in the hermit crab Pagurus middendorffii

Yasuda

Matsuo

Wada

2014

Plankton Benthos Res

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Abstract:Most crustaceans are known to regenerate their appendages after losing them, and the pattern of regeneration may be related to its function. The pattern of regeneration of the right major cheliped was examined after experimentally induced autotomy and its behavioral function during male-male contests for mates was investigated in the hermit crab Pagurus middendorffii. Males with an autotomized major cheliped regenerated it at the first molt after autotomy and showed smaller growth in body size than in control males. The shape of the regenerated cheliped was more slender than the original, implying that the regenerated major cheliped would be less robust and weaker than previously. The length of the major cheliped of an owner male (guarding a female at the start of a dyadic contest) and the body size of an intruder affected whether or not the contest escalated, but the major cheliped length of the intruder and the body size of the owner determined the outcome of the escalated contest. The intruder used the major cheliped as an offensive weapon to take the female away from the owner by force after the contest escalated. The owner often moved the major cheliped forward, similar to a fencing weapon, before escalation. Such movement of the owner seems to be effective to prevent the intruders from approaching, and the regenerated cheliped of the owner may not require much robustness and strength as a defensive weapon before escalation. Rapid regeneration of the major cheliped in P. middendorffii would therefore be beneficial to minimize the disadvantages incurred by loss of the major cheliped.

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“…Since males primarily use their left minor chela to pick up food, they have reduced opportunities to feed during guarding (Yoshii, Takeshita, & Wada, 2009). When a solitary male encounters a guarding pair, a maleemale contest often occurs between the two males in Pagurus middendorffii (Wada et al, 1999; and Pagurus nigrofascia (Suzuki, Yasuda, Takeshita, & Wada, 2012;Yasuda et al, 2011), and the larger males or the guarding males are in the advantageous position in these contests Yasuda et al, 2012). Guarding males of Pagurus filholi and P. nigrofascia often climb up onto fronds of algae (Y. Hasaba, C. I. Yasuda, & S. Wada, personal observation) to sequester females from intruders and avoid maleemale contests (Kawaminami & Goshima, 2015), suggesting that guarding would be a beneficial behaviour for ensuring a mating opportunity.…”

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Reason for being single: some males do not guard receptive females in the hermit crab Pagurus filholi

2015

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Assessment strategy in male–male contests of the hermit crab Pagurus middendorffii

Cited by 31 publications

References 36 publications

Aggressiveness as a component of fighting ability in pigs using a game-theoretical framework

Aggressiveness as a component of fighting ability in pigs using a game-theoretical framework

Rapid regeneration of the major cheliped in relation to its function in male-male contests in the hermit crab Pagurus middendorffii

Reason for being single: some males do not guard receptive females in the hermit crab Pagurus filholi

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