Mate recognition and pairing in the big‐clawed snapping shrimp,<i>Alpheus heterochelis</i>

Rahman, Nasreen; Dunham, David; Govind, C. K.

doi:10.1080/10236240109379075

Cited by 17 publications

(11 citation statements)

References 14 publications

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“…All our trials were performed between two individuals (no opportunity for choice between individuals) and all shrimp were housed individually when not in a trial; under these conditions, preference strengths (for large males in female A. heterochaelis and pre-molt females in A. angulosus) may have been reduced, thereby also reducing the use of investigatory behaviors. Similarly, as all interactions were between unfamiliar individuals, effects of familiarity (Rahman et al 2001) could not be detected. Finally, our experiments were performed with inter-molt individuals.…”

contrasting

confidence: 56%

Why have long antennae? Exploring the function of antennal contact in snapping shrimp

Vickery

Hollowell

Hughes

2012

Marine and Freshwater Behaviour and Physiology

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contrasting

confidence: 56%

Why have long antennae? Exploring the function of antennal contact in snapping shrimp

Vickery

Hollowell

Hughes

2012

Marine and Freshwater Behaviour and Physiology

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“…Nolan and Salmon, 1970;Duffy et al, 2002) and interspecific (defense). In Alpheus, sexual pairs are size matched, with females generally having a slightly larger body (Schein, 1975;Hughes, 1996;Rahman et al, 2002) and relatively smaller major chela than males do (e.g. Dawes, 1934;Nolan and Salmon, 1970;Schein, 1975Schein, , 1977Knowlton ,1980;Boltana and Thiel, 2001;Mathews, 2002).…”

Section: Introductionmentioning

confidence: 98%

Synalpheus paraneptunus (Crustacea: Decapoda: Caridea) populations with intersex gonopores: a sexual enigma among sponge-dwelling snapping shrimps

Tóth

Bauer

2008

Invertebrate Reproduction & Development

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Caridean shrimp populations are usually gonochoristic, i.e., composed of separate sexes; however, some carideans are protandric sex changers or simultaneous hermaphrodites. In this contribution we investigated the sexual composition and its determination in two sponge-dwelling Synalpheus species with different degrees of sociality. Because the usual external sexing methods (presence or absence of appendices masculinae in males) can not be used in Synalpheus spp., we sexed individuals by observation of male and female gonopores using scanning electron microscopy (SEM). We found that populations of two species of the Synalpheus paraneptunus complex consist almost entirely of individuals with both male and female gonopores (termed herein "intersexes"). Such a high incidence of intersexes has not been previously reported in other decapods. We performed morphological and behavioral observations to test various hypotheses explaining the presence of intersex gonopores. Whereas protandry and simultaneous hermaphroditism are not likely to occur in these two species, capacity of immature helpers to mature as either sex, or developmental anomaly without adaptive significance could explain the presence of both female and male gonopores in these shrimps.

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“…data), and therefore, variation in female quality exists with regard to reproductive success for male mates. Males and females share a shelter, which they defend from intruders, and which could hence make territory holding potential an important variable in mate choice (Rahman et al, 2003). Asymmetry in reproductive investment, as discussed in the Introduction, as well as sexual dimorphism, suggest that sexual selection might play a role in the mating system.…”

Section: Discussionmentioning

confidence: 98%

“…Alternatively, the greater interfemale aggression could also serve to prevent a male pairing with multiple females, because a male shuttling between females will not be as reliably present as a monogamous male. Females showed a pairing bias against mates that were absent for 24 h (Rahman et al, 2001), which could also be a tactic by females to avoid multiple pairing by males, who would be less reliably present.…”

Section: Mate-choice and Competitionmentioning

confidence: 98%

Mate Choice in the Big-Clawed Snapping Shrimp, Alpheus Heterochaelis Say, 1818

Rahman¹,

Dunham²,

Govind³

2004

Crustac

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In socially monogamous animals mate choice can be expected when mates vary in quality, degree of parental investment, or ability to defend an important resource. Mate choice was expected in the big-clawed snapping shrimp, Alpheus heterochaelisSay, 1818, as female size is positively correlated with fecundity. In addition, males and females share a shelter, which they defend from intruders, and therefore, resource holding potential could be an important component in mate choice. We tested the effect of body size and shelter ownership on mate choice and on competition in both sexes. As shelter occupancy and defence may have an in uence on pair formation and mate choice, we also tested competitive success in obtaining preferred shelters as a variable in mate choice. We did not nd evidence that males preferred larger females, but showed that females preferred and competed for larger males. Females paired more frequently with smaller males that occupied a shelter than with smaller males without a shelter. Males were, however, more successful in evicting smaller samesex conspeci cs from preferred shelters than females were. This could indicate that competition for shelter favours males with larger claws, and hence, body size, as these are better able to defend a shelter from other conspeci cs. A female may therefore choose larger males, because she is dependent on both a male and a shelter for successful reproduction. RÉSUMÉChez les animaux monogames, le choix du partenaire intervient quand les partenaires varient en qualité, en degré d'investissement parental, ou en capacité à défendre une ressource importante. Un tel choix était attendu chez la crevette Alpheus heterochaelis Say, 1818, étant donné que la taille de la femelle est corrélée positivement avec la fécondité. De plus, les mâles et les femelles partagent un abri, qu'ils défendent contre les intrus, et donc, la détention potentielle d'une ressource pourrait être un argument important dans le choix du partenaire. Nous avons testé l'effet de la taille du corps et de la possession d'un abri sur le choix du partenaire et sur la compétition dans les deux sexes. Comme l'occupation d'un abri et sa défense peuvent avoir une in uence sur la formation des couples et le choix du partenaire, nous avons également testé le succès de compétition pour l'obtention des abris 3 / Corresponding author; address:

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Mate recognition and pairing in the big‐clawed snapping shrimp,Alpheus heterochelis

Cited by 17 publications

References 14 publications

Why have long antennae? Exploring the function of antennal contact in snapping shrimp

Why have long antennae? Exploring the function of antennal contact in snapping shrimp

Synalpheus paraneptunus (Crustacea: Decapoda: Caridea) populations with intersex gonopores: a sexual enigma among sponge-dwelling snapping shrimps

Mate Choice in the Big-Clawed Snapping Shrimp, Alpheus Heterochaelis Say, 1818

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