The ecology of Tripneustes

Lawrence, John M.; Agatsuma, Yukio

doi:10.1016/s0167-9309(01)80024-7

Cited by 36 publications

(32 citation statements)

References 31 publications

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“…Our ability to repeatedly induce spawning in sea urchin broodstock in intervals of 6-8 weeks also indicates the very rapid gametogenic cycle in cultured T. gratilla. These results concur with the classification of T. gratilla as a ruderal species (e.g., fastgrowing, large reproductive allocation) with high potential for aquaculture Bazhin, 1998, cited in Lawrence andAgatsuma, 2001). The observed year-round regular cycling in GI values, together with the lack of a marked seasonal pattern in reviews in fisheries science vol.…”

Section: Potential Reproductive Outputsupporting

confidence: 88%

Enhancing the Recovery of Depleted Tripneustes gratilla Stocks Through Grow-Out Culture and Restocking

Juinio‐Meñez

Bangi

Malay

et al. 2008

Reviews in Fisheries Science

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Grow-out culture in sea cages and restocking were undertaken to help rebuild the spawning population of Tripneustes gratilla in Bolinao, Philippines. Higher population densities and incidence of recruits in [2004][2005][2006], as well as steady increase in the catch per unit effort of gatherers, indicate that the sea urchin population is recovering. Growth of reseeded, hatcheryproduced sea urchins in two sites was high and comparable to those in grow-out cages. However, natural mortalities were very high (91-99%). Good growth, high survivorship, and potential reproductive output of sea urchins in grow-out cages, aside from immediate socio-economic benefits, demonstrate that grow-out culture is a cost effective option for reestablishing effective spawning populations. Higher recruitment success in Lucero, compared to other sites, may be attributed to local favorable biophysical conditions and to maintenance of an effective spawning population due to enforcement of marine sanctuary rules, size regulation, and the presence of broodstock cages. Results suggest that the establishment of a network of marine protected areas in tandem with grow-out culture may be strategic in enhancing the recovery of depleted populations by maintaining larval exchange to sustain the productivity of sea urchin fishery stocks along NW Luzon.

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Section: Potential Reproductive Outputsupporting

confidence: 88%

Enhancing the Recovery of Depleted Tripneustes gratilla Stocks Through Grow-Out Culture and Restocking

Juinio‐Meñez

Bangi

Malay

et al. 2008

Reviews in Fisheries Science

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“…The reproductive season has been reported to be in the spring and fall at the Great Barrier Reef (Stephenson 1934), winter in the northern Red Sea (Pearse 1974;Fouda & Hellal 1990) and Gulf of Aquaba (Kidron et al 1972), summer of Japan (Kobayoshi 1969;Onoda 1936), autumn in the seas of the Philippines and at Taiwan (Chen & Chang 1981;Tuason & Gomez 1979) and throughout the year in Madagascar and Kenya (Maharavo 1993;Muthiga 2005). Tripneustes gratilla is the most com-Effects of temperature on early development of T. gratilla mon shallow water echinoid that occurs on a variety of habitats, including sea grass and algal beds, sand with rubble, rock and coral reef flat (Lawrence & Agatsuma 2007). In Okinawa, it is found both in the intertidal and littoral zones in coral reef, where the spawning season starts from October to January (unpublished data) when the seawater temperature is around 26.5 to 22…”

Section: Discussionmentioning

confidence: 99%

Effects of temperature on hatching rate, embryonic development and early larval survival of the edible sea urchin, Tripneustes gratilla

2009

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Abstract:The temperature tolerances of embryonic and early larval development stages of Tripneustes gratilla were investigated from 13-34• C under laboratory conditions. Zygotes showed unequal cleavage at 13• C, whereas cleavage did not occurred at 34 • C, respectively. Outside of this temperature range, embryos showed abnormality at different incubation times. Early larvae of this species have the ability to survive the higher temperature limit for short periods of time. Prism and 2 arm pluteus larvae survived at temperatures between 30 and 33• C, whereas 4 arm pluteus larvae survived at temperatures between 30 and 36• C for 2 h. These results suggest that the larval temperature tolerance capability of T. gratilla is stage dependent. These findings are important for understanding the life history strategy of this sea urchin in the shallow open water environment.

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“…(Linnaeus, 1758) (Echinodermata: Euecinodea: Tripneustidae) or collector sea urchin ( Fig.1), one of the commercially important regular echinoids, has a circumtropical distributions extending into the subtropics (Lawrence 2001). It occurs most abundantly throughout the Indo-West Pacific, where it can be found from east Africa (Red Sea to Natal), the south sea islands (from the Norfolk and Kermadec Islands to the Marquesas and Hawaii), and from Australia (Port Jackson on the east coast and Sharks bay on the west) to southern part of Japan (with Bonin Islands) (Lawrence ., 2001;Lawrence, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…It occurs most abundantly throughout the Indo-West Pacific, where it can be found from east Africa (Red Sea to Natal), the south sea islands (from the Norfolk and Kermadec Islands to the Marquesas and Hawaii), and from Australia (Port Jackson on the east coast and Sharks bay on the west) to southern part of Japan (with Bonin Islands) (Lawrence ., 2001;Lawrence, 2007). It can also be found at Pulau Bum Bum near Semporna, between Sabah and Philippines (Parvez ., 2016a(Parvez ., , 2016b.…”

Section: Introductionmentioning

confidence: 99%

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Salinity effects on the development of embryos and larvae of a high-valued sea urchin, Tripneustes gratilla (Linnaeus, 1758)

Parvez¹,

Rahman²,

Yusoff³

et al. 2018

JEB

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Aim: Methodology:Results: Interpretation:To investigate the standard salinity levels on the embryonic and larval development that will be helpful for the optimum growth and larval development in the seed production of for aquaculture and conservation.Gametes were collected by injecting 0.5 M KCl into coelomic cavity of the adult sea urchin, and insemination was done using 10 'dry' sperm dilution from where around 500 fertilized eggs were transferred into eight transparent plastic tubes containing 50 ml artificial seawater each with different salinities (19‰, 22‰, 25‰ 28‰, 31‰, 34‰, 37‰ and 40‰). To set up this experiment, 31‰ salinity was considered as a control treatment containing normal sea water. Hatching rate with required time at each salinity level were studied. Each treatment of this experiment was conducted with three replications at 26.0 ± 1.0°C. All the developmental stages of embryos and larvae were observed at time intervals after insemination until attaining the metamorphic competent stage, and the duration of different development stages was also estimated.Fertilization rate was highest at 28‰, followed by those obtained at 28‰, 34‰, 25‰, 37‰, 22‰, and 40‰, while the lowest rate was achieved at 19‰ salinity level, decreased with increasing and decreasing salinities (p < 0.05). The development times of 16-cell and morula stages were significantly different at 31‰ and 28‰ salinity than those at 34‰ and 37‰ salinity, whereas, in blastula, there was no significant difference (p > 0.05) among 31‰, 28‰ and 34‰. The developmental times in the early prism, 2-arm and 4-arm pluteus stages showed significant differences at the salinity levels of 31‰ and 37‰. There were no significant differences (p > 0.05) recognized on the length and width of prism larva in these salinity levels at all. However, the differences were found to be significant (p < 0.05) in all the morphological characteristics of the 2-and 4-armed pluteus larvae of .To date, this is the first effort to study the influence of salinity on embryonic and larval morphometric development, and survival and growth in tropical sea urchin, in Malaysia. The results obtained from this study would be helpful towards the development of induced breeding, larval rearing and seed production of this high-valued sea urchins for commercial aquaculture and biodiversity conservation.

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The ecology of Tripneustes

Cited by 36 publications

References 31 publications

Enhancing the Recovery of Depleted Tripneustes gratilla Stocks Through Grow-Out Culture and Restocking

Enhancing the Recovery of Depleted Tripneustes gratilla Stocks Through Grow-Out Culture and Restocking

Effects of temperature on hatching rate, embryonic development and early larval survival of the edible sea urchin, Tripneustes gratilla

Salinity effects on the development of embryos and larvae of a high-valued sea urchin, Tripneustes gratilla (Linnaeus, 1758)

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