2009
DOI: 10.1007/s12562-009-0146-5
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Otolith development and daily increment formation in laboratory-reared larval and juvenile black-spot tuskfish Choerodon schoenleinii

Abstract: Microstructures of lapilli were examined for reared larvae and juveniles of black-spot tuskfish Choerodon schoenleinii. Lapilli of larvae at 1 day after hatching have one diffuse and obscure ring with an otolith radius of 4.3 ± 0.50 lm (mean ± SD, N = 8). The slope and intercept of the regression between the number of days after hatching and increment counts did not differ significantly from one and zero, respectively, indicating that lapillus increments were formed on a daily basis after hatching. There was a… Show more

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Cited by 16 publications
(6 citation statements)
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“…This prediction is based on the fact that pelagic larval durations (PLD) in congeneric labrids in similar geographic locations tend to be similar (Victor, 1986) and the PLD of the Blackspot Tuskfish Choerodon schoenleinii, which co-occurs with C. rubescens, is about 25-30 days (Yamada et al, 2009). Preliminary analyses of the number of growth rings between the nuclei and settlement marks in otoliths of C. rubescens support this prediction (K. Cure, pers.…”
Section: Introductionmentioning
confidence: 96%
See 1 more Smart Citation
“…This prediction is based on the fact that pelagic larval durations (PLD) in congeneric labrids in similar geographic locations tend to be similar (Victor, 1986) and the PLD of the Blackspot Tuskfish Choerodon schoenleinii, which co-occurs with C. rubescens, is about 25-30 days (Yamada et al, 2009). Preliminary analyses of the number of growth rings between the nuclei and settlement marks in otoliths of C. rubescens support this prediction (K. Cure, pers.…”
Section: Introductionmentioning
confidence: 96%
“…rubescens is a broadcast spawner with buoyant eggs (Fairclough, 2005), which probably hatch in one to two days, like those of C. schoenleinii (see Yamada et al, 2009). The relatively protracted duration of the pelagic ELS provides considerable potential for dispersal and thus gene flow (see Shanks, 2009), possibly across the entire distribution of the species.…”
Section: Introductionmentioning
confidence: 99%
“…Because of the species's importance, stock enhancement is being tried [5]. Studies of home ranges and diel movement patterns [6], and otolith microstructure [7] using hatchery-reared individuals have also been carried out. According to these studies, the species exhibits protogynous hermaphroditism in accordance with changes in body color, like many other labrid species.…”
Section: Introductionmentioning
confidence: 99%
“…This species shows a clear diurnal movement pattern; it feeds on benthic prey during the day and rests in shelters at night [13][14][15]. The fish settles around seagrass beds after the pelagic larval periods of about a month [16] and stayed there during the summer [17,18]. Thereafter, the fish gradually moves out of the seagrass beds to the sandy gravel areas as the fish grows [17,18].…”
Section: Introductionmentioning
confidence: 99%