scholarly journals THE EFFECT OF SEASONS AND DEPTHS ON GROWTH AND SURVIVAL RATE OF PEARL OYSTER (Pinctada maxima) IN KODEK BAY, NORTH LOMBOK

2011 ◽  
Vol 3 (2) ◽  
Author(s):  
M. S. Hamzah ◽  
Bisman Nababan ◽  
Bisman Nababan
Keyword(s):  
Survival Rate ◽  
Seedling Survival ◽  
Pearl Oyster ◽  
Mass Mortality ◽  
Growth And Survival ◽  
Transition Season ◽  
Pearl Oysters ◽  
Significant Difference ◽  
Similar Survival ◽  
Pinctada Maxima

The pearl oyster (Pinctada maxima) farming in the West Nusa Tenggara waters in particular and in other areas, complained to the mass mortality of pearl oysters saplings on shell width between 3-4 cm. The mass mortality, allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 23, 2008 to February 22, 2009. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. Analysis of variance showed that the seasonal factors, the level of depth, and the interaction between both factors responded very significantly on pearl oyster seedling survival. The "significant difference test" showed that the interaction between season and level of 2 m depth provided the best result with 100% survival. The similar survival rate was also found at a depth of 8 m during the transition season I and the east season. For single factor (depth), the best result for growth and survival rate was found in 2 m deep during the transition season I.Keywords: Oyster sapling, Pinctada maxima, growth, mortality, season, depth, Kodek Bay

scholarly journals THE EFFECT OF SEASONS AND DEPTHS ON GROWTH AND SURVIVAL RATE OF PEARL OYSTER (Pinctada maxima) IN KODEK BAY, NORTH LOMBOK

2011 ◽  
Vol 3 (2) ◽  
Author(s):  
M. S. Hamzah ◽  
Bisman Nababan ◽  
Bisman Nababan
Keyword(s):  
Survival Rate ◽  
Seedling Survival ◽  
Pearl Oyster ◽  
Mass Mortality ◽  
Growth And Survival ◽  
Transition Season ◽  
Pearl Oysters ◽  
Significant Difference ◽  
Similar Survival ◽  
Pinctada Maxima

<p>The pearl oyster (Pinctada maxima) farming in the West Nusa Tenggara waters in particular and in other areas, complained to the mass mortality of pearl oysters saplings on shell width between 3-4 cm. The mass mortality, allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 23, 2008 to February 22, 2009. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. Analysis of variance showed that the seasonal factors, the level of depth, and the interaction between both factors responded very significantly on pearl oyster seedling survival. The "significant difference test" showed that the interaction between season and level of 2 m depth provided the best result with 100% survival. The similar survival rate was also found at a depth of 8 m during the transition season I and the east season. For single factor (depth), the best result for growth and survival rate was found in 2 m deep during the transition season I.</p><p>Keywords: Oyster sapling, Pinctada maxima, growth, mortality, season, depth, Kodek Bay</p>

scholarly journals THE RELATIONSHIP BETWEEN SEASON VARIATIONS AND DEPTH LEVEL ON THE GROWTH AND SURVIVAL RATE OF PEARL OYSTER SEEDS (Pinctada maxima) IN KAPONTORI BAY, BUTON ISLAND

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
M S Hamzah
Keyword(s):  
Survival Rate ◽  
Environmental Conditions ◽  
Survival Rates ◽  
Pearl Oyster ◽  
Mass Mortality ◽  
Depth Level ◽  
Growth And Survival ◽  
Pearl Oysters ◽  
The Relationship ◽  
Similar Growth

<p>The pearl oyster (<span style="text-decoration: underline;">P</span>. <span style="text-decoration: underline;">maxima</span>) farming particularly in the Kapontori Bay, Buton Island waters and in other areas had complained for the mass mortality of pearl oysters saplings on the shell width between 3-4 cm. The mass mortality, was allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 27, 2007 to February 28, 2008. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. The variance analyses showed that depth levels affected the survival rates of the pearl oyster seeds significantly (P&lt;0.01). Based on honest significantly difference test, it also showed that the percentage number of survival rate was found higher within the depth of 2m (93.33%). Based on the relationship analyses between length and weight of shell body in all depths indicated a similar growth pattern of  minor allometric (b&lt;3). The growth, survival rate, and environmental conditions based on depth levels on pearl oyster saplings were discussed in this paper.</p> <p>Keywords: Seasonal variation, survival rate, growth, pearl shell (<span style="text-decoration: underline;">P</span>. <span style="text-decoration: underline;">maxima</span>), depth level</p>

scholarly journals THE GROWTH AND SURVIVAL STUDY OF PEARL OYSTER SEEDS (Pinctada maxima) BASED ON THE DIFFERENCE DEPTH LEVELS IN KAPO NTORI BAY, BUTON ISLAND

2009 ◽  
Vol 1 (2) ◽  
Author(s):  
M.S. Hamzah ◽  
Bisman Nababan
Keyword(s):  
Survival Rate ◽  
Negative Impact ◽  
Seedling Survival ◽  
Survival Rates ◽  
Environmental Parameters ◽  
Pearl Oyster ◽  
Growth And Survival ◽  
Extreme Change ◽  
The Difference ◽  
Pinctada Maxima

<p>Extreme change in sea surface temperature that might be influenced by global warming has negative impact on the pearl shell farming in Kapontori Bay.This change occurred above tolerance threshold for pearl shell juvenile survival at 3-4 cm shell wide that caused its mortality.The study was conducted from 28 February to 28 May 2008 at the Kapontory Bay,Buton island. The research aimed to identify growth and survival of pearl oyster seeds(Pinctada maxima) on differences of depth level.This research is important especially for pearl farming development in Southeast Sulawesi waters,as a reference basis in an effort to improve seedling survival of pearl oysters that are highly vulnerable to extremechange in temperature conditions. The variance analyses showed that the depth levels did not significantly affect the survival rates of the pearl oyster seeds (P&gt;0,05). However, based on depth levels,higher survival rates (96.67%)were found on the depth of 2 m.Some environmental parameters in relation to the growth and survival rate of pearl oyster seed were discussed in this paper.</p> <p>Keywords:Depth levels,survival rate, growth, pearl shell, Kapontori Bay</p>

scholarly journals THE GROWTH AND SURVIVAL STUDY OF PEARL OYSTER SEEDS (Pinctada maxima) BASED ON THE DIFFERENCE DEPTH LEVELS IN KAPO NTORI BAY, BUTON ISLAND

2009 ◽  
Vol 1 (2) ◽  
Author(s):  
M.S. Hamzah ◽  
Bisman Nababan
Keyword(s):  
Survival Rate ◽  
Negative Impact ◽  
Seedling Survival ◽  
Survival Rates ◽  
Environmental Parameters ◽  
Pearl Oyster ◽  
Growth And Survival ◽  
Extreme Change ◽  
The Difference ◽  
Pinctada Maxima

Extreme change in sea surface temperature that might be influenced by global warming has negative impact on the pearl shell farming in Kapontori Bay.This change occurred above tolerance threshold for pearl shell juvenile survival at 3-4 cm shell wide that caused its mortality.The study was conducted from 28 February to 28 May 2008 at the Kapontory Bay,Buton island. The research aimed to identify growth and survival of pearl oyster seeds(Pinctada maxima) on differences of depth level.This research is important especially for pearl farming development in Southeast Sulawesi waters,as a reference basis in an effort to improve seedling survival of pearl oysters that are highly vulnerable to extremechange in temperature conditions. The variance analyses showed that the depth levels did not significantly affect the survival rates of the pearl oyster seeds (P>0,05). However, based on depth levels,higher survival rates (96.67%)were found on the depth of 2 m.Some environmental parameters in relation to the growth and survival rate of pearl oyster seed were discussed in this paper. Keywords:Depth levels,survival rate, growth, pearl shell, Kapontori Bay

scholarly journals THE RELATIONSHIP BETWEEN SEASON VARIATIONS AND DEPTH LEVEL ON THE GROWTH AND SURVIVAL RATE OF PEARL OYSTER SEEDS (Pinctada maxima) IN KAPONTORI BAY, BUTON ISLAND

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
M S Hamzah
Keyword(s):  
Survival Rate ◽  
Environmental Conditions ◽  
Survival Rates ◽  
Pearl Oyster ◽  
Mass Mortality ◽  
Depth Level ◽  
Growth And Survival ◽  
Pearl Oysters ◽  
The Relationship ◽  
Similar Growth

The pearl oyster (P. maxima) farming particularly in the Kapontori Bay, Buton Island waters and in other areas had complained for the mass mortality of pearl oysters saplings on the shell width between 3-4 cm. The mass mortality, was allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 27, 2007 to February 28, 2008. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. The variance analyses showed that depth levels affected the survival rates of the pearl oyster seeds significantly (P<0.01). Based on honest significantly difference test, it also showed that the percentage number of survival rate was found higher within the depth of 2m (93.33%). Based on the relationship analyses between length and weight of shell body in all depths indicated a similar growth pattern of  minor allometric (b<3). The growth, survival rate, and environmental conditions based on depth levels on pearl oyster saplings were discussed in this paper. Keywords: Seasonal variation, survival rate, growth, pearl shell (P. maxima), depth level

scholarly journals Control of Polychaetes by Dipping Infected Pearl Oyster on Different Salinity

2007 ◽  
Vol 3 (2) ◽  
pp. 47
Author(s):  
Yani Hadiroseyani ◽  
. Iswadi ◽  
Daniel Djokosetyanto
Keyword(s):  
Survival Rate ◽  
Key Words ◽  
Saline Water ◽  
Pearl Oyster ◽  
High Survival ◽  
High Survival Rate ◽  
Pearl Oysters ◽  
Pinctada Maxima

<p>Dip treatment on pearl oysters <em>(Pinctada maxima) </em>was conducted in different concentrations of saline water to eliminate boring polychaetes. Results shows that polychaetes leave the osyters which treated on saline water at 0 ppt, 45 ppt, and 60 ppt as long as 15 minutes each. It also shows that the oysters got high survival rate 7 days after the treatment.</p> <p>Key words : Polychaetes, pearl oyster, dipping, salinity</p> <p> </p> <p>ABSTRAK</p> <p>Pengendalian polikaeta pengebor dengan menggunakan berbagai konsentrasi larutan garam telah dilakukan pada tiram mutiara <em>(Pinctada maxima). </em>Berdasarkan jumlah polikaeta yang keluar, hasil percobaan ini menunjukkan bahwa perendaman dengan konsentrasi garam 0 ppt. 45 ppt, dan 60 ppt selama 15 menit lebih efektif dibandingkan pada konsentrasi 15 dan 30 ppt. Tingkat kelangsungan hidup tiram mutiara yang diamati 7 hari setelah perendaman dalam larutan garam mencapai 100%.</p> Kata kunci : Polikaeta. tiram mutiara, perendaman. salinitas

scholarly journals FLUORESCENT LAMP LIGHT INTENSITY ON THE EMBRYOGENESIS DEVELOPMENT AND THE SURVIVAL OF PEARL OYSTER (Pinctada maxima) LARVAE

2013 ◽  
Vol 5 (2) ◽  
Author(s):  
Mat Sardi Hamzah
Keyword(s):  
Survival Rate ◽  
Light Intensity ◽  
Pearl Oyster ◽  
Larval Rearing ◽  
Fluorescent Lamp ◽  
Brood Stock ◽  
Dark Treatment ◽  
Light Intensities ◽  
Significant Difference ◽  
Pinctada Maxima

One of the important factors in determining the success of pearl oyster (Pinctada maxima) culture is the quality and quantity of larvae produced in brood stock spawning process in the laboratory. Problems were often found in larval rearing and larvae attachment to the substrate that were low in quality and little number of larvae. The study purposes were observe the embryogenesis development and the survival rate of pearl oyster larvae under different fluorescent lamp light intensities. The study was conducted in August 1nd – 30th, 2011 in Sambelia Bumi Gemilang Hamparan Mutiara laboratory, East Lombok. Results revealed that different in light intensities effected the survivorship of the pearl oyster larvae significantly (p<0.01). Honest Significant Difference (HSD) test indicated that the highest survival rate occurred in dark condition (dark treatment) of 38%, followed by intensity of 10 watts (34.67%), 5 watts (30.67%) and 15 watts (4.66%) resfectively Keywords: embryogenesis development, survivorship, pearl oyster (Pinctada maxima) larvae,  fluorescent lamp light intensity

scholarly journals FLUORESCENT LAMP LIGHT INTENSITY ON THE EMBRYOGENESIS DEVELOPMENT AND THE SURVIVAL OF PEARL OYSTER (Pinctada maxima) LARVAE

2013 ◽  
Vol 5 (2) ◽  
Author(s):  
Mat Sardi Hamzah
Keyword(s):  
Survival Rate ◽  
Light Intensity ◽  
Pearl Oyster ◽  
Larval Rearing ◽  
Fluorescent Lamp ◽  
Brood Stock ◽  
Dark Treatment ◽  
Light Intensities ◽  
Significant Difference ◽  
Pinctada Maxima

<p>One of the important factors in determining the success of pearl oyster (Pinctada maxima) culture is the quality and quantity of larvae produced in brood stock spawning process in the laboratory. Problems were often found in larval rearing and larvae attachment to the substrate that were low in quality and little number of larvae. The study purposes were observe the embryogenesis development and the survival rate of pearl oyster larvae under different fluorescent lamp light intensities. The study was conducted in August 1<sup>nd</sup> – 30<sup>th</sup>, 2011 in Sambelia Bumi Gemilang Hamparan Mutiara laboratory, East Lombok. Results revealed that different in light intensities effected the survivorship of the pearl oyster larvae significantly (p&lt;0.01). Honest Significant Difference (HSD) test indicated that the highest survival rate occurred in dark condition (dark treatment) of 38%, followed by intensity of 10 watts (34.67%), 5 watts (30.67%) and 15 watts (4.66%) resfectively</p> <p>Keywords: embryogenesis development, survivorship, pearl oyster (<span style="text-decoration: underline;">Pinctada</span> <span style="text-decoration: underline;">maxima</span>) larvae,  fluorescent lamp light intensity</p>

scholarly journals Control of Polychaetes by Dipping Infected Pearl Oyster on Different Salinity

2007 ◽  
Vol 3 (3) ◽  
pp. 29
Author(s):  
Yani Hadiroseyani ◽  
. Iswadi ◽  
Daniel Djokosetyanto
Keyword(s):  
Survival Rate ◽  
Key Words ◽  
Saline Water ◽  
Pearl Oyster ◽  
High Survival ◽  
High Survival Rate ◽  
Pearl Oysters ◽  
Pinctada Maxima

<p>Dip treatment on pearl oysters (<em>Pinctada maxima</em>) was conducted in different concentrations of saline water to eliminate boring polychaetes. Results shows that polychaetes leave the oysters which treated on saline water at 0 ppt, 45 ppt, and 60 ppt as long as 15 minutes each. It also shows that the oysters got high survival rate 7 days after the treatment.</p> <p>Key words: Pearl oyster, <em>Pinctada maxima</em>, polychaetes, salt, dipping, survival rate  </p>

scholarly journals SETTLEMENT ABILITY OF PEARL OYSTER (Pinctada maxima) LARVAE AT DIFFERENT POSITIONS AND DEPTHS COLLECTORS

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Mat Sardi Hamzah
Keyword(s):  
Survival Rate ◽  
Seed Production ◽  
Analysis Of Variance ◽  
Pearl Oyster ◽  
Laboratory Scale ◽  
Research Centre ◽  
Success Factor ◽  
Pearl Oysters ◽  
Depth Analysis ◽  
Pinctada Maxima

One of the success  factor in the cultivation of pearl oysters (Pinctada maxima) within laboratory scale of  is the  ability of the larvae to settle on  the collector. Stocking collectors which are not on time with an irregular position could cause a decline in seed production. The research was conducted from 25 July to 27August 2011 at Laboratory of Marine Bio-industry Technical Implementatation Unit,  Research Centre for Oceanography, Indonesian Institute of Sciences, Lombok, West Nusa Tenggara (NTB). The aim of the study was to observe the attachment of larvae at different position and depth. Analysis of variance showed that larvae settlement was influenced  by  depth instead of position and the interaction between them. Real Honest Different Test showed that in the 20 cm depth was significantly different from  60 cm and 100 cm in number of larvae attached  on the collector. The highest survival rate was in 20 cm depth with 68,98% (516 larvae) while in 60 cm was 17,11% (128 larvae) and 100 cm (9,22% (69 larvae), and the others were attached on the wall of  the tank 4,68% (35 larvae). Keywords: settlement ability of pearl oyster’s larvae (Pinctada maxima), collector, depth

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