scholarly journals NURSERY TECHNIQUES WITH JUVENILE CORAL TROUT, Plectropomus leopardus WITH DIFFERENT TYPES OF FOOD

2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Anak Agung Alit ◽  
Ketut Maha Setiawati ◽  
Tony Setia Dharma
Keyword(s):  
Sea Water ◽  
Survival Rates ◽  
Critical Factor ◽  
Water Volume ◽  
Design Data ◽  
Feeding Method ◽  
Growth And Survival ◽  
Coral Trout ◽  
Juvenile Coral ◽  
Trash Fish

ABSTRACT Feed management is a critical factor in the nursery activities because food serves as an energy for growth and survival rates. The study aimed to determine the best feeding to improve growth and survival rates. Cultured of coral trout grouper seeds were used for this research in 9 fiber tubs each of  0.8 tonnes of sea water volume with 3 treatments and 3 replicates. The feeding treatments were (a) commercial feeding pelle; (b) trash fish; and (c) feeding combinations (50% pellets and 50% trash fish). The initial length of coral trout grouper seeds were 3 cm long. The pellet used was a commercial pellet with dose of 5-10% biomass, while the trash fish was clupeid fish. Feeding times were twice a daya at 08:00 and 16:00 local time. A complete random design was used as an experiment design. Data was analysed using ANOVA and descriptive statistics. Water qualities during larva rearing included water temperature, pH, salinity, DO, ammonia, nitrite, and phosphate. The results showed that growth dan survical rates was significantly affected by combination feeding method (50% pellet and 50% trash fish) with growth rate of 0.08% cm/day and survival rate of 60.20±2.34%. Keywords: Feed, trash fish, juvenile coral trout grouper, growth, and survival.

scholarly journals NURSERY TECHNIQUES WITH JUVENILE CORAL TROUT, Plectropomus leopardus WITH DIFFERENT TYPES OF FOOD

2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Anak Agung Alit ◽  
Ketut Maha Setiawati ◽  
Tony Setia Dharma
Keyword(s):  
Sea Water ◽  
Survival Rates ◽  
Critical Factor ◽  
Feeding Time ◽  
Design Data ◽  
Feeding Method ◽  
Growth And Survival ◽  
Coral Trout ◽  
Juvenile Coral ◽  
Trash Fish

<p><em>ABSTRACT </em></p> <p><em>Feed management is a critical factor in the </em><em>nursery </em><em>activities because f</em><em>ood</em><em> serves </em><em>as an</em><em> energy for growth and </em><em>survival rates</em><em>. The study aim</em><em>ed</em><em> to determine the best feeding to improve growth and </em><em>survival rates</em><em>. Culture</em><em>d</em><em> of coral trout grouper seed</em><em>s</em><em> </em><em>were used </em><em>for </em><em>this </em><em>research </em><em>in 9 f</em><em>iber </em><em>tubs each </em><em>of  0.8 tonnes of sea water </em><em>volume </em><em>with 3 treatments and 3 replicat</em><em>e</em><em>s</em><em>. T</em><em>he </em><em>feeding </em><em>treatment</em><em>s</em><em> </em><em>were (a)</em><em> </em><em>commercial </em><em>feeding pelle</em><em>; (b)</em><em> </em><em>trash </em><em>fish</em><em>;</em><em> and</em><em> (c)</em><em> feeding combinations (50% pellets and 50% trash fish). </em><em>T</em><em>he initial </em><em>length of</em><em> coral trout grouper seed</em><em>s</em><em> </em><em>were</em><em> 3 cm</em><em> long</em><em>. The pellet used was a commercial pellet with dose of 5-10% biomass, </em><em>while the </em><em>trash fish </em><em>was </em><em>clupeid</em><em> fish</em><em>. Feeding time</em><em>s</em><em> </em><em>were twice a daya </em><em>at 08:00 and 16:00</em><em> local time</em><em>. </em><em>A complete random design was used as an experiment design. Data was a</em><em>nalys</em><em>ed using </em><em>ANOVA and descriptive </em><em>statistics. Water qualities during </em><em>larva rearing include</em><em>d</em><em> water temperature, pH, salinity, DO, ammonia, nitrite, </em><em>and </em><em>phosphate. The results showed that </em><em>growth dan survical rates was significantly affected by combination feeding method (50% pellet and 50% trash fish) </em><em> </em><em>with </em><em>growth</em><em> rate of 0.08% cm/day and </em><em>survival </em><em>rate of</em><em> </em><em>60</em><em>.20±2.34%</em><em>.</em><em> </em></p> <p><em> </em></p> <strong><em>Keywords</em></strong><em>: Feed, trash fish, juvenile coral trout grouper, growth, and survival.</em>

scholarly journals Utilization of Trash Fish for Cultivation of Crablet Mud Crab (Scylla serrata)

2020 ◽  
Vol 25 (3) ◽  
pp. 110-114
Author(s):  
Heppi Iromo ◽  
Dori Rachmawani ◽  
Abdul Jabarsyah ◽  
Zainuddin Zainuddin
Keyword(s):  
Carapace Width ◽  
Survival Rates ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Growth And Survival ◽  
Weight Growth ◽  
Randomized Design ◽  
Trichiurus Lepturus ◽  
Trash Fish ◽  
In The Wild

The high demand for mud crabs in North Kalimantan causes catch to increase in the wild. If it is not balanced with efforts to increase its aquaculture of mud crab, in the future there will be a decline in population. This study aims to determine the growth and survival rate of mud crab seed (crablet, Scylla serrata) in the application method of different types of trash fish. This research used a completely randomized design with 4 treatments and 3 replications. The Crablet used carapace width average 0.07-0.09 cm and weigh average 0.05-0.07 g with total 150 crablets. The treatments applied by trash fish were (A) Tilapia Fish (Oreochromis mossambicus), (B) Longfin Herrings Fish (Ilisha elongata), (C) Sword Fish (Trichiurus lepturus) and (D) Snails (Telescopium telescopium). The results were The best weight growth of crablet occurs in the treatment of T. lepturus (P>0.05) and  the highest of survival rates of crablet were found in treatment T. telescopium (P<0.05)  than the other. The trash fish were used turned out to be able survival of crablet mud crab (Scylla serrata).

scholarly journals APPLICATION OF ARTIFICIAL FEED WITH DIFFERENT PROTEIN CONTENT ON BLACKSADDLED CORAL GROUPER Plectropomus laevis NURSERY

2017 ◽  
Vol 8 (2) ◽  
pp. 493-502
Author(s):  
Bejo Slamet
Keyword(s):  
Survival Rate ◽  
Protein Content ◽  
Crude Protein ◽  
Economic Value ◽  
Protein A ◽  
Stocking Density ◽  
Design Data ◽  
Growth And Survival ◽  
Trash Fish ◽  
Wet Weight

Blacksaddled coral grouper Plectropomus laevis is an export commodity and possess high economic value in Asian markets, but the wild population is already threatened. The purpose of this study was to determine the best food for improving growth and survival rate. The nursering were conducted using 9 fiberglass tanks with 1 m3 of volume for 6 month, with three treatment and 3 replicates. Three different foods were used as treatments, i.e.: Local commersial pellet with crude protein content 50% (A), im-port  commersial pellet with cure protein content 55% (B) and trash fish (sardine) (C). The initial size of blacksaddled coral grouper seed were 2.5 cm total lengths (TL), 0.45 g body weight (BW). The stocking density of fry was reared at 250 fish per m3. A complete random design was used as an experiment design. Data was analysed using ANOVA statistics. Feeding times were twice a day at 08.00 and 15.00 local time; with dose at satiation. The samplings of fry were conducted every 15 day to measure of survival rate (SR), TL and BW. On the end of experiment was calculated economic ana-lized (BC ratio). The result showed that there was significant different (P<0.05) among treatments for SR and growth rate (GR). The better SR and GR was at treatment B with SR 96.5%, and GR 0.75g/day followed by treatment C (SR 90.5%: GR 0.54g/day) and treatment A (SR 81.5%: GR 0.42g/ day. The food conversion ratio was 1.15 in treatment A, 1.02 in B and 4.81 (wet weight) in C. From economic analized showed that the best BC ratio was in pellet 55% protein (B), followed by trash fish (C) and pellet 50% protein (A) with BC ratio of 1.75, 1.72 and 1.41 respectively. 

scholarly journals PENGARUH KEPADATAN TERHADAP SINTASAN, PERTUMBUHAN, DAN GAMBARAN DARAH BENIH IKAN BETUTU Oxyeleotris marmorata

2018 ◽  
Vol 12 (4) ◽  
pp. 341
Author(s):  
Tri Heru Prihadi ◽  
Adang Saputra ◽  
Gleni Hasan Huwoyon ◽  
Brata Pantjara
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Physiological Response ◽  
Hematological Parameters ◽  
Survival Rates ◽  
Stocking Density ◽  
High Growth ◽  
Water Volume ◽  
Fish Length ◽  
Growth And Survival

Ikan betutu Oxyeleotris marmorata merupakan ikan lokal potensial menjadi komoditas budidaya. Performa pertumbuhan dan sintasan dapat ditingkatkan dengan mengoptimalkan padat tebar. Tujuan penelitian adalah menentukan padat tebar yang menghasilkan sintasan dan pertumbuhan tinggi, serta respons fisiologis terbaik. Kolam yang digunakan berukuran 2 m x 1 m x 1 m dan diisi air 1 m3. Perlakuan yang diuji adalah kepadatan 50 ekor/m3, 100 ekor/m3, dan 150 ekor/m3. Ukuran benih yang digunakan 4,24 ± 0,58 cm dengan bobot 2,74 ± 0,45 g. Selama 60 hari masa pemeliharaan, pakan yang diberikan adalah cacing sutra Tubifex sp. secara sekenyangnya. Hasil penelitian menunjukkan sintasan benih ikan betutu yang dipelihara pada berbagai padat tebar tidak berbeda secara nyata, pertumbuhan spesifik panjang (1,50 ± 0,37%/hari) dan bobot total benih ikan betutu (1,95 ± 0,32%/hari) tertinggi, dan perubah respons fisiologis berupa gambaran darah paling stabil dicapai pada padat tebar 50 ekor/m3, serta biomassa tertinggi dicapai pada kepadatan 150/m3. Hasil penelitian ini dapat dijadikan informasi dasar untuk melakukan pendederan ikan betutu secara terkontrol.Sand goby, Oxyeleotris marmorata is a potential fish species for aquaculture in Indonesia. However, the growth performance and survival rate of the fish seed are still low. Such challenges could be solved through the optimization of stocking density of the fish. The research objective was to determine the optimal stocking density to produce high growth and survival rate, as well as the best physiological response. The ponds used in this experiment were 2 m x 1 m x 1 m in size (water volume: 1 m3). The stocking density treatments were 50, 100, and 150 individual/m3. The initial fish length average was 4.24 ± 0.58 cm, with the initial body weight average of 2.74 ± 0.45 g. During 60 days of rearing period, the fish were fed with Tubifex sp. ad libitum. The results showed that the survival rates on different stocking densities were not significantly different. The highest specific growth on length (1.50 ± 0.37%/day) and body weight total (1.95 ± 0.32%/day) and the most stable physiological response related to its hematological parameters were achieved by seed stocked at 50 individuals/m3. The best biomass total was achieved by seed stocked at 150 individuals/m3. The result of this study could be applied as basic information to culture sand goby in a controlled environment.

scholarly journals APPLICATION OF ARTIFICIAL FEED WITH DIFFERENT PROTEIN CONTENT ON BLACKSADDLED CORAL GROUPER Plectropomus laevis NURSERY

2017 ◽  
Vol 8 (2) ◽  
pp. 493
Author(s):  
Bejo Slamet
Keyword(s):  
Survival Rate ◽  
Protein Content ◽  
Economic Value ◽  
Protein A ◽  
Stocking Density ◽  
Design Data ◽  
Growth And Survival ◽  
Trash Fish ◽  
Result Show ◽  
Wet Weight

<p><em>Blacksaddled coral grouper <span style="text-decoration: underline;">Plectropomus</span> <span style="text-decoration: underline;">laevis</span> is an export commodity and possess high economic value in Asian markets, but the wild population </em><em>is </em><em>already threatened. The purpose of this study was to determine the best food for improv</em><em>ing</em><em> growth and survival rate. The nursering were conducted using 9 fiberglass tanks with 1 m<sup>3</sup> of volume for 6 month, with three treatment and 3 replicates. Three different foods were used as treatments, i.e.: Local com</em><em>m</em><em>ersial pellet with </em><em>crude </em><em>protein content 50% (A), im-port  com</em><em>m</em><em>ersial pellet with </em><em>cure </em><em>protein content 55% (B) and trash fish (sardine) (C). The initial size</em><em> o</em><em>f blacksaddled coral grouper seed were 2.5 cm total lengths (TL), 0.45 g body weight (BW). The stocking density of fry was reared at 250 fish per m<sup>3</sup>. A complete random design was used as an experiment design. Data was analysed using ANOVA statistics. Feeding times were twice a day at 08.00 and 15.00 local time; wit</em><em>h</em><em> dose at satiation. The samplings of fry were conducted every 15 day to measure of survival rate</em><em> </em><em>(SR), TL and BW. On the end of experiment was calculated economic ana-lized (BC ratio). The result show</em><em>ed</em><em> that there was significant different (P&lt;0.05) among trea</em><em>t</em><em>ments for </em><em>SR </em><em>and growth</em><em> rate (GR)</em><em>. The better </em><em>SR </em><em>and GR</em><em> </em><em>was at treatment B with SR 96.5%, and GR 0.75g/day followed by treatment C (SR 90.5%: GR 0.54g/day) and treatment A (SR 81.5%: GR 0.42g/ day. The food conversion ratio was 1.15 in treatment A, 1.02 in B and 4.81 (wet weight) in C. From economic analized showed that the best BC ratio was in pellet 55% protein (B), followed by trash fish (C) and pellet 50% protein (A) with BC ratio of 1.75, 1.72 and 1.41 respectively. </em></p>

Short-Term Change in a Population of the Meat Ant Iridomyrmex Purpureus (Hymenoptera: Formicidae).

1975 ◽  
Vol 23 (4) ◽  
pp. 511 ◽  
Author(s):  
PJM Greenslade
Keyword(s):  
Seasonal Variation ◽  
Colony Size ◽  
Critical Factor ◽  
Nest Entrance ◽  
Short Term ◽  
Growth And Survival ◽  
Short Term Change ◽  
Term Change ◽  
Rates Of Growth ◽  
Size And Structure

A population of the mound-building meat ant, Iridomyrmex purpureus s. s., was studied from 1971 to 1974 near the cool, wet end of its South Australian range. Seasonal variation in the numbers of nest mounds, and in number of nest entrance holes used by the population, indicate that it is under climatic stress in winter and summer. It is also subject to human interference and many mounds have been damaged; the fate of such colonies suggests that the mounds affect nest temperatures and are important in reducing winter stress. Comparison of parts of the population from areas differing in aspect and drainage shows that colony size and structure are controlled by rates of growth and survival of nests, depending largely on summer and winter stress respectively. The latter appears to be the critical factor in this population.

scholarly journals A conceptual model of flow to the Waikoropupu Springs, NW Nelson, New Zealand, based on hydrometric and tracer (<sup>18</sup>O, Cl,<sup>3</sup>H and CFC) evidence

2008 ◽  
Vol 12 (1) ◽  
pp. 1-19 ◽  
Author(s):  
M. K. Stewart ◽  
J. T. Thomas
Keyword(s):  
New Zealand ◽  
Flow Model ◽  
Sea Water ◽  
Quantitative Description ◽  
Water Volume ◽  
Deep Aquifer ◽  
Submarine Springs ◽  
Recharge Sources ◽  
Flow Systems ◽  
New Evidence

Abstract. The Waikoropupu Springs, a large karst resurgence 4 km from the coast, are supplied by the Arthur Marble Aquifer (AMA) underlying the Takaka Valley, South Island, New Zealand. New evidence on the recharge sources in the catchment, combined with previous results, is used to establish a new recharge model for the AMA. Combined with the oxygen-18 mass balance, this yields a quantitative description of the inputs and outputs to the aquifer. It shows that the Main Spring is sourced mainly from the karst uplands (74%), with smaller contributions from the Upper Takaka River (18%) and valley rainfall (8%), while Fish Creek Spring contains mostly Upper Takaka River water (50%). In addition, much of the Upper Takaka River contribution to the aquifer (58%) bypasses the springs and is discharged offshore via submarine springs. The chemical concentrations of the Main Spring show input of 0.5% of sea water on average, which varies with flow and derives from the deep aquifer. Tritium measurements spanning 40 yr, and CFC-11 measurements, give a mean residence time of 8 yr for the Main Spring water using the preferred two-component model. Our conceptual flow model, based on the flow, chloride, oxygen-18 and age measurements, invokes two different flow systems with different recharge sources to explain the flow within the AMA. One system contains deeply penetrating old water with mean age 10.2 yr and water volume 3 km3, recharged from the karst uplands. The other, at shallow levels below the valley floor, has much younger water with mean age 1.2 yr and water volume 0.4 km3, recharged by Upper Takaka River and valley rainfall. The flow systems contribute in different proportions to the Main Spring, Fish Creek Springs and offshore springs. Their very different behaviours, despite being in the same aquifer, are attributed to the presence of a diorite intrusion below the surface of the lower valley, which diverts the deep flow towards the Waikoropupu Springs and allows much of the shallow flow to pass over the intrusive and escape via submarine springs.

scholarly journals Budidaya ikan mas (Cyprinus carpio) sistem akuaponik dengan padat penebaran berbeda

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Darwis Darwis ◽  
Joppy D. Mudeng ◽  
Sammy N.J. Londong
Keyword(s):  
Water Quality ◽  
Cyprinus Carpio ◽  
Stocking Density ◽  
Quality Parameters ◽  
Water Volume ◽  
Daily Growth ◽  
Growth And Survival ◽  
Experimental Fish ◽  
The Difference

This research aimed to determine the stocking density that support the best growth and survival rate of carp cultivated in aquaponic systems, and to study the water quality of carp culture with different stocking densities in aquaponic systems. The study used 12 aquaria measuring 40x40x40 cm each (water volume of 50 liters). The experimental fish are carp (Cyprinus carpio) weighing in average of 3.5 g/individual.  The fish were cultivated with different stocking densities as treatment, including A = 4; B = 7; C = 10 and D = 13 individuals/aquarium.  The fish were fed with pellet at 5%/body weight/day with a feeding frequency of two times a day. The study was conducted for 4 weeks. Data consisting of daily growth, survival and water quality parameters (temperature, pH, dissolved oxygen, ammonia, nitrite and nitrate) were measured once a week. The data obtained were analyzed by ANOVA. The results of the study showed that the difference in stocking density had no significant effect on the growth and survival of carp.  Water quality was in a reasonable range to support the growth and survival of carp cultivated with aquaponic systems.Keywords: cultivation, carp, aquaponics, stocking density, growth

Growth and Survival of Hormone-Sterilized Coho (Oncorhynchus kisutch) and Kokanee Salmon (O. nerka) in a Lacustrine Environment

1988 ◽  
Vol 45 (8) ◽  
pp. 1490-1494 ◽  
Author(s):  
Eric A. Parkinson ◽  
Kanji Tsumura
Keyword(s):  
Survival Rates ◽  
Oncorhynchus Kisutch ◽  
Control Fish ◽  
Lacustrine Environment ◽  
Growth And Survival ◽  
Kokanee Salmon ◽  
Return Rates ◽  
Differential Vulnerability ◽  
Normal Life Span ◽  
And Control

Coho (Oncorhynchus kisutch) and kokanee salmon (O. nerka) were sterilized using 17α-methyltestosterone treatments and released into a lacustrine environment. The treatment appeared to be successful and sizes at capture were similar for treated and control fish. Return rates of hormone-treated groups of fish were much lower than those of the control groups. Differences in return rates were assumed to be due to differences in survival rates but the possibility of differential vulnerability to the capture gear could not be ruled out. The proportion of treated kokanee in the catch increased with age, indicating that treated kokanee survived beyond the normal life span of the species.

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