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 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 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 PENGARUH KEPADATAN SPAT KERANG MUTIARA (PINCTADA MAXIMA) DENGAN METODE LONGLINE TERHADAP PERTUMBUHAN DAN KELANGSUNGAN HIDUP

2019 ◽  
Vol 19 (2) ◽  
pp. 221
Author(s):  
Muhammad Junaidi ◽  
Zaenal Ahmad ◽  
Baiq Hilda Astriana
Keyword(s):  
Survival Rate ◽  
Block Design ◽  
Pearl Oyster ◽  
Daily Growth ◽  
Oyster Spat ◽  
Growth And Survival ◽  
Randomized Block Design ◽  
Standard Level ◽  
Absolute Growth ◽  
Pinctada Maxima

Abstrak : Penelitian kepadatan spat kerang mutiara yang dipelihara di alam perlu terus dilakukan karena belum ada patokan tingkat kepadatan yang sesuai untuk usaha komersial. Oleh karena itu dilakukan penelitian dengan tujuan mengetahui pengaruh kepadatan terhadap pertumbuhan dan tingkat kelangsungan hidup spat kerang mutiara (Pinctada maxima).  Metode yang digunakan adalah Rancangan Acak Kelompok (RAK) terdiri dari 5 perlakuan dan 3 ulangan, yakni perlakuan A (60 ind/poket), B (75 ind/poket), C (90 ind/poket), D (105 ind/poket), dan perlakuan E (120 ind/poket). Ukuran spat yang digunakan rata-rata 1 cm pada poket (keranjang pemeliharaan) 45x60 cm2. Hasil penelitian selama 45 hari menunjukan bahwa pertumbuhan pada semua perlakuan tidak berbeda nyata, namun pertumbuhan terbaik dengan nilai 0,70 cm untuk pertumbuhan mutlak dan 0,69% untuk laju pertumbuhan harian dimiliki oleh kepadatan yang rendah yakni 60 ind/poket, disusul oleh perlakuan lainnya seperti perlakuan B,C,D, dan E. Hasil uji ANOVA, SR didapatkan hasil persentase yang berbeda nyata, yakni terdapat pada perlakuan A (60 ind/poket) dengan nilai SR 90,44% dan pada perlakuan E (120 ind/poket) dengan nilai SR 74,44%. Berdasarkan hasil penelitian, disimpulkan bahwa padat penebaran yang berbeda tidak berpengaruh nyata terhadap pertumbuhan spat kerang mutiara, namun berpengaruh nyata terhadap tingkat kelangsungan hidup (SR) spat kerang mutiara (Pinctada maxima) yang dipelihara selama 45 hari.Kata kunci : Pertumbuhan, kelangsungan hidup, spat, Pinctada maximaAbstract : The study of pearl shell spat density maintained in nature needs to be continued because there is no standard level of density suitable for commercial businesses. Therefore a study was conducted with the aim of knowing the effect of density on growth and survival rate of pearl oyster spat (Pinctada maxima). The method used is Randomized Block Design (RBD) consisting of 5 treatments and 3 replications, namely treatment A (60 ind / pocket), B (75 ind / pocket), C (90 ind / pocket), D (105 ind / pocket) ), and treatment E (120 ind / pocket). The size of the spat used was 1 cm on the pocket (maintenance basket) 45x60 cm2. The results of the 45-day study showed that growth in all treatments was not significantly different, but the best growth was 0.70 cm for absolute growth and 0.69% for the daily growth rate owned by a low density of 60 ind / pocket, followed by treatment others such as treatment B, C, D, and E. The results of the SR ANOVA test showed that the percentage results were significantly different, which were found in treatment A (60 ind / pocket) with SR values of 90.44% and in treatment E (120 ind / pocket) with an SR of 74.44%. Based on the results of the study, it was concluded that the different stocking densities had no significant effect on the growth of pearl shell spat, but significantly affected the survival rate (SR) of pearl shell spat (Pinctada maxima) which was maintained for 45 days.Keywords: growth, survival rate, spat, Pinctada maxima.

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 PENGARUH PERBEDAAN PADAT TEBAR LARVA TERHADAP PERTUMBUHAN DAN SINTASAN PADA IKAN UCENG (Nemacheilus fasciatus)

2019 ◽  
Vol 18 (2) ◽  
pp. 209-214
Author(s):  
Jojo Subagja ◽  
Vitas Atmadi Prakoso ◽  
Otong Zenal Arifin ◽  
Anang Hari Kristanto
Keyword(s):  
Weight Gain ◽  
Survival Rate ◽  
Specific Growth ◽  
Negative Impact ◽  
Fish Larvae ◽  
Survival Rates ◽  
Stocking Density ◽  
Larval Rearing ◽  
Growth And Survival ◽  
Length Gain

Proper stocking density on larval rearing of barred loach (Nemacheilus fasciatus Valenciennes, 1846) is very important in terms of obtaining the best growth and survival rate. This study was aimed to observe the growth and survival rate of barred loach subjected to different larval stocking density. Fish larvae were obtained by artificial spawning from in aquarium. Larvae were stocked on aquariums (50 × 40 × 30 cm) with three stocking density treatments (5, 10, and 15 individuals/L) and three replications. The experimental fish larvae were fed by Artemia and commercial feed (crude protein content: 30%) and feeding frequency twice per day (ad libitum). The length and weight were reassured every 10 days during 70 days of rearing period. Temperature, pH, and dissolved oxygen were measured at each treatment. Data obtained from measurements were analysed to assess the length gain, weight gain, specific growth rate (SGR), biomass gain, and survival rate. The results showed length gain of 3.35 ± 0.01, 2.94 ± 0.10, and 2.82 ± 0.15 cm and weight gain of 0.573 ± 0.023, 0.436 ± 0.018, and 0.417 ± 0.043 g in larval stocking density of 5, 10 and 15 individuals/L, respectively. Specific growth rates and biomass growth were of 6.22 ± 0.41, 5.93 ± 0.21, and 5.68 ± 0.41 %/day and 94.04 ± 5.39, 146.80 ± 3.81, and 167.24 ± 17.48 g in larval stocking density of 5, 10 and 15 individuals/L, respectively. Meanwhile, the survival rates obtained in this study were 89.13 ± 7.25, 93.13 ± 5.13, and 76.50 ± 3.54 % in larval stocking density of 5, 10 and 15 individuals/L, respectively. Increased stocking density has a negative impact on the growth and survival rate of barred loach.

scholarly journals Effect of Hardness in 3 ppt of Water Salinity on growth and survival rates of Barb Fish (Barbus conhonius Hamilton-Buchanan)

2007 ◽  
Vol 4 (1) ◽  
pp. 17 ◽  
Author(s):  
Kukuh Nirmala ◽  
R. Wulandari ◽  
D. Djokosetiyanto
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Survival Rates ◽  
Water Hardness ◽  
Water Salinity ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Growth And Survival

<p>This study was conducted to determine the effect of hardness on growth and survival rate of barb fish (<em>Barbus conchonius</em> Hamilton-Buchanan) reared in the 3 ppt of water salinity.  Fish were reared in three different hardnesses, i.e., 54, 72,<sub> </sub>and 90 mg/L CaCO<sub>3 </sub>for 30 days.  The results of study showed that fish reared in water hardness of 72 mg/L CaCO<sub>3</sub> had higher daily growth rate (1.15%) compared with other treatments.  Daily growth rate of fish reared in water hardness of 54 and 90 mg/L CaCO<sub>3</sub> were 0.76 and 0.37%, respectively.  There was no effect of hardness on survival rate of barb fish.</p> <p>Keywords: barb fish, <em>Barbus conchonius</em>,  hardness, salinity</p> <p> </p> <p>ABSTRAK</p> <p>Penelitian ini bertujuan untuk mengetahui pengaruh kesadahan yang berbeda terhadap laju pertumbuhan dan tingkat kelangsungan hidup ikan barbir (<em>Barbus conchonius</em> Hamilton-Buchanan) yang dipelihara <a name="OLE_LINK2"></a><a name="OLE_LINK1">pada air bersalinitas 3 ppt.  </a>Ikan dipelihara dalam 3 tingkat kesadahan yang berbeda, yaitu 54 mg/L CaCO<sub>3</sub>, 72 mg/L CaCO<sub>3</sub>,<sub> </sub>dan 90 mg/L CaCO<sub>3 </sub>selama 30 hari.  Hasil penelitian menunjukkan bahwa laju perumbuhan harian tertinggi diperoleh pada ikan yang dipelihara pada kesadahan 72 mg/L CaCO<sub>3 </sub>(1,15%) dibandingkan dengan perlakuan lainnya. Laju pertumbuhan harian ikan yang dipelihara pada kesadahan 54 dan  90 mg/L CaCO<sub>3</sub> masing-masing mencapai 0,76% dan 0,37%.  Kelangsungan hidup ikan barb tidak dipengaruhi oleh kesadahan.</p> <p>Kata kunci: ikan barbir, <em>Barbus conchonius</em>, kesadahan, salinitas</p>

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 EFFECTS OF FEED ON THE SURVIVAL RATE, GROWTH RATE AND METAMORPHOSIS TIME OF THE WHITE LEG SHRIMP LARVAE (Litopenaeus vannamei Boone, 1931) AT ZOEA STAGE

2018 ◽  
Vol 54 (4A) ◽  
pp. 205
Author(s):  
Nguyen Van Cong
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Litopenaeus Vannamei ◽  
Survival Rates ◽  
Stocking Density ◽  
Growth And Survival ◽  
Study Results

The larvae of white leg shrimp (Litopenaeus vannamei Boone, 1931) at phase nauplii 6 fed with a stocking density of 150 pcs per litre and 3 formula including formula 1 with dry microalgae Spirulina + artemia as main ingredients, formula 2 with microalgae Thalasiosira weissflogii + artemia as main ingredients and formula 3 with microalgae Thalasiosira pseudonana + artemia as main ingredients. Experiments were carried out in 18 tanks fifty-litre composite at Quang Binh branch of C.P Vietnam Corporation. The study results show that, with formula 3, white leg shrimps larvae at zoea stage have the highest growth and survival rates (86.57 %), followed by formula 2 (76.03 %) and finally formula 1 (67.90 %). White leg shrimps larvae at zoea stage in formula 3 have the shortest metamorphosis time (78.61 hours), followed by formula 2 (83.25 hours) and the longest in formula 1 (94.10 hours).

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