Host effect on size structure and timing of sex change in the coral-inhabiting snail Coralliophila violacea

Chen, Ming‐Hui; Soong, Keryea; Tsai, Min‐Li

doi:10.1007/s00227-003-1204-7

Cited by 14 publications

(10 citation statements)

References 25 publications

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“…This pattern has been described in many protandric gastropods with plastic and socially controlled sex change (e.g. Soong & Chen 1991, Collin 2000, Chen et al 2004, Richter & Luque 2004, Rivera-Ingraham et al 2011. In addition, minimum female size was negatively correlated with number of males present in the aggregation, and L 50 negatively correlated with sex ratio of the aggregation.…”

Section: Discussionsupporting

confidence: 61%

Role of population traits and local social interactions in sex-change plasticity of the protandric marine gastropod Crepidula coquimbensis

Brante¹,

Vilches²,

Quiñones³

2012

Mar. Ecol. Prog. Ser.

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Theoretical and experimental work suggests that time to sex change in sequential hermaphrodites may be strongly linked to local population traits and the social environment of the individuals. We evaluated social control and temporal and spatial plasticity in the sex-change response of the protandric marine gastropod Crepidula coquimbensis, which inhabits the empty shells of other gastropods and reproduces via direct development. Over 2 yr, 2 populations with significant genetic distance were sampled, and the abundance, population sex ratio, and sex ratio within hosting shells was measured. Reproductive responses, minimum female size, and the size at which 50% of the males changed sex to female (L 50 ) were calculated for each location and sampling date. The sex ratio was male-biased in all cases. High temporal and spatial variability in the abundance, sex ratio, and body size at sex change was observed. However, negative and significant correlations were found between minimum female size and number of males in the aggregation and between population sex ratio and L 50 . Although earlier studies have suggested that sexchange strategy of gastropod species with direct development is less plastic and responsive to conspecifics, the present work indicates that the protandric marine gastropod C. coquimbensis may adjust its sexual strategy to local social conditions. KEY WORDS: Sequential hermaphroditism · Life-history strategy · Size advantage · Population genetics · Sex ratio Resale or republication not permitted without written consent of the publisher

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Section: Discussionsupporting

confidence: 61%

Role of population traits and local social interactions in sex-change plasticity of the protandric marine gastropod Crepidula coquimbensis

Brante¹,

Vilches²,

Quiñones³

2012

Mar. Ecol. Prog. Ser.

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“…It is also known to co-exist with the muricid corallivorous snail Coralliophilla violacea (Kiener, 1836) (= C. nerotoidea (Gmelin, 1891)) (Fujioka and Yamazato 1983;Schuhmacher, 1992;Mc-Clanahan, 1994;Al-Moghrabi, 1997). The latter species has been reported to occur as individuals and in aggregations (Oren et al, 1998;Chen et al, 2004) but was not observed at Koh Tao. The extent of the diet of Morula spinosa has not consisively been defined despite its wide Indo-Pacific distribution (Taylor, 1978;Yokochi, 2004;Titlyanov and Titlyanova, 2009).…”

Section: Discussionmentioning

confidence: 93%

Prey selection of corallivorous muricids at Koh Tao (Gulf of Thailand) four years after a major coral bleaching event

Moerland

Scott²,

Hoeksema

2016

CTOZ

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Corallivorous Drupella (Muricidae) snails at Koh Tao are reported to have extended their range of prey species following a major coral bleaching event in 2010. Populations of their preferred Acropora prey had locally diminished in both size and abundance, and the snails had introduced free-living mushroom corals in their diet. Although the coral community largely recovered, the Drupella population grew and reached outbreak proportions. For this study, corallivorous muricids at Koh Tao were studied more intensively to examine their identities, distribution and prey choice four years after the bleaching event. Drupella rugosa was identified as the major outbreak species and occurred at densities > 3 m -2 in depth ranges of 2-5 and 5-8 m. The density of D. rugosa was related to the live coral cover, Acropora colony density, and depth. Resource selection ratios revealed that species of Acropora, Psammocora and Pavona corals were attacked more frequently than would be expected based on their availability. Strikingly, fungiid corals were now avoided as prey in the recovered coral community, despite them being part of the preferred diet directly after the bleaching. Although D. rugosa showed a clear prey preference, it appears to be plastic by changing with prey availability. The muricids Drupella margariticola and Morula spinosa occurred in much lower densities and were less often associated with corals. Snails of the opportunistic corallivore D. margariticola usually co-occurred in D. rugosa aggregations, although they also formed feeding aggregations by themselves. Whether M. spinosa generally associates with corals as a corallivore or a scavenger has yet to be determined. Molecular analyses did not reveal cryptic speciation among snails sampled from different coral hosts and also no geographic variation. The present study also showed that corallivory is more common among D. margariticola and M. spinosa than previously known.

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“…Experiments have confirmed that the timing of sex change is sensitive to the immediate social environment in limpets [9,55], snails [56], shrimp [17] and many species of Bidirectional sex change is beneficial in the coral goby Gobiodon histrio because movement between corals might be required to form a breeding pair following the loss of a partner. The ability to change sex in each direction enables an individual to breed with any other single adult encountered, and thus reduce the risk of searching for a new partner [49,50].…”

Section: No Sex Changementioning

confidence: 99%

Diversity and flexibility of sex-change strategies in animals

Munday

Buston

Warner

2006

Trends in Ecology & Evolution

336

337

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Here, we review recent empirical advances that have improved our understanding of why and when sex change occurs. We show that sex-changing animals use a greater diversity of strategies to increase their reproductive success than was previously recognized: some individuals change sex early, others change sex late, some individuals change sex more than once, and others do not change sex at all. These different strategies can be unified by the principle that individuals change sex when it increases their reproductive value. The breeding tactics (male, female or non-breeder) adopted by individuals often appear to be adaptive responses to their own social-ecological context and variation in these conditions results in significant differences in the timing of sex change within and between species.

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Host effect on size structure and timing of sex change in the coral-inhabiting snail Coralliophila violacea

Cited by 14 publications

References 25 publications

Role of population traits and local social interactions in sex-change plasticity of the protandric marine gastropod Crepidula coquimbensis

Role of population traits and local social interactions in sex-change plasticity of the protandric marine gastropod Crepidula coquimbensis

Prey selection of corallivorous muricids at Koh Tao (Gulf of Thailand) four years after a major coral bleaching event

Diversity and flexibility of sex-change strategies in animals

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