Nursery and grow-out culture of the abalone Haliotis asinina on a reef flat: A comparison of growth and survival using different culture containers

Aquaculture ◽  
2021 ◽  
Vol 541 ◽  
pp. 736786
Author(s):  
Ma. Junemie Hazel L. Lebata-Ramos ◽  
Jonas P. Mediavilla ◽  
Ellen Flor D. Solis ◽  
Rema C. Sibonga ◽  
Frances Patrick L. Alicante ◽  
...  
Keyword(s):  
Reef Flat ◽  
Growth And Survival ◽  
Haliotis Asinina

scholarly journals Phenotype characterization of interspecific hybrid abalone Haliotis asinina and Haliotis squamata seed

2014 ◽  
Vol 12 (1) ◽  
pp. 25
Author(s):  
Dinar Tri Soelistyowati ◽  
Aldilla Kusumawardhani ◽  
Muhammad Zairin Junior
Keyword(s):  
Sea Water ◽  
Mass Scale ◽  
Hatching Rate ◽  
Growth And Survival ◽  
Haliotis Asinina ◽  
Phenotype Characterization ◽  
Hybrid Seeds ◽  
Early Veliger ◽  
Female Brood

<p class="NoParagraphStyle" align="center"><strong>ABSTRACT</strong></p><p class="NoParagraphStyle" align="center"><strong> </strong></p><p class="NoParagraphStyle">Abalone is one of sea-water aquaculture commodity that having relatively low in growth and survival. Interspesific hybridization between abalone <em>Haliotis asinina</em> and <em>Haliotis squamata</em> is required to produce hybrid seeds having a better phenotype inherited from their parents. Crossbreeding of abalone was done in the reciprocal procedure with a natural spawning technique on mass scale. The hybrid seeds showed higher similarity with female brood (98,69%), while  the larvae from <em>H. squamata </em>× <em>H. asinina</em> were abnormal on trocophore until early veliger phase then dead occurred the next phase. The results showed that hybridization between male <em>H. asinina</em> and female <em>H. squamata</em> had higher fertilization and hatching rate than its reciprocal i.e. 76.01±6.15% and 60.14±4.80%.</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Keywords: interspesific hybridization, phenotype, <em>Haliotis asinina</em>, <em>Haliotis squamata</em>, abalone</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle" align="center"><strong>ABSTRAK</strong></p><p class="NoParagraphStyle" align="center"><strong> </strong></p><p class="NoParagraphStyle">Abalon merupakan komoditas budidaya laut dengan pertumbuhan yang relatif lambat dan kelangsungan hidupnya rendah. Rekayasa persilangan interspesifik antara abalon <em>Haliotis asinina</em> dan <em>Haliotis squamata</em> diharapkan mampu mengatasi permasalahan benih dan memiliki fenotipe unggul yang diwariskan dari tetuanya. Persilangan abalon dilakukan secara resiprok dengan teknik pemijahan alami skala massal. Hasil penelitian menunjukkan bahwa benih hibrida menunjukkan kemiripan dengan induknya sebesar 98,69%, sedangkan larva hibrida antara jantan <em>H. squamata </em>× <em>H. asinina</em> menunjukkan bentuk abnormal pada fase trokofor hingga veliger awal dan kematian pada fase lanjut. Hibridisasi antara jantan <em>H. asinina</em> dan betina <em>H. squamata</em> memiliki derajat pembuahan dan derajat penetasan yang lebih tinggi dibandingkan resiprokalnya, yaitu berturut-turut 76,01±6,15% dan 60,14±4,80%.</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Kata kunci: hibridisasi interspesifik, fenotipe, <em>Haliotis asinina</em>, <em>Haliotis squamata</em>, abalon</p><p> </p><p class="NoParagraphStyle" align="center"> </p>

scholarly journals GROWTH OF JUVENILE HORSE'S HOOF CLAMS (Hippopus hippopus) REARED IN COASTAL WATERS, PARI ISLAND, KEPULAUAN SERIBU

2018 ◽  
Vol 31 ◽  
pp. 13-20 ◽  
Author(s):  
L. M.G.L. Pangabean ◽  
S. A.P. Dwiono ◽  
D. E. Djoko Setyono
Keyword(s):  
Survival Rate ◽  
Coastal Waters ◽  
Reef Flat ◽  
Daily Growth ◽  
Growth And Survival ◽  
Water Condition ◽  
Sea Bed ◽  
Suitable Site

The main purpose of this present study is to determine the growth and survival rate of juvenile horse's hoof clams {Hippopus hippopus) and to find out a suitable site for their rearing in nature. Juveniles used in this study were about 3 years old, produced in the hatchery of CV Dinar, Bali. They were reared in the cages, placed on the sea bed at several sites, namely: (1) on the reef flat, (2) on the bed of a lagoon, and (3) on the sea channel. After 360days of rearing, the highest daily growth was found for juveniles reared in site-2, i.e. 0.110 mm in length, 0.080 mm in width and 0.091 mm in height. These values were significantly different from other two sites. The survival rate after 360 days of rearing was 85.5% in site-1, 99.4% in site-2 and 96.8% in site-3. Based on these results the bed of a lagoon is the best and suitable site to grow horse's hoof clam juveniles in nature. Water condition at this site is relatively calm with sandy-muddy substrates and relatively dense seagrasses, mainly Thallasia spp.

GROWTH AND SURVIVAL OF TROPICAL ABALONE Haliotis asinina SEED IN CONCRETE TANKS AT DIFFERENTS STOCKING DENSITY

2012 ◽  
Vol 4 (2) ◽  
Author(s):  
Mat Sardi Hamzah ◽  
Sigit Anggoro Putro Dwiono ◽  
Safriyadi Hafid
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Shell Growth ◽  
Economic Value ◽  
Stocking Density ◽  
Seed Density ◽  
Total Production ◽  
Growth And Survival ◽  
Haliotis Asinina ◽  
The World

Tropical abalones (Haliotis asinina) is a marine gastropod that has high economic value and consumed by people in the world. In 2002, the production of abalones was 4.076 ton from total production of marine fisheries in the world 8.000 ton. The countries that produce abalone by farming are Taiwan, Cina, South Africa, Japan, Cilie, USA, Australia and New Zealand. Information about the production in Indonesia is scarce. The main issue faced by farmer is higher mortality during post larvae and juvenile. The aim of this research was to observe the influence of abalone seed density in concrete tanks regarding to growth and survival. The research was conducted in January - May 2012 Mataram Marine Bio Industry Technical Implementation Unit, LIPI. Analysis of varians showed that seed densities was not significantly different (P>0.05). The highest survival rate were in density 75 individual/tank with 11.11 % mortality. The highest growth rate were in 50 individual/tank with shell growth rate 0.21cm/14 days and seed weight was 1.23 g.Keywords: growth, survival rate, seed of abalone (Haliotis asinina), density

scholarly journals GROWTH AND SURVIVAL OF TROPICAL ABALONE Haliotis asinina SEED IN CONCRETE TANKS AT DIFFERENTS STOCKING DENSITY

2012 ◽  
Vol 4 (2) ◽  
Author(s):  
Mat Sardi Hamzah ◽  
Sigit Anggoro Putro Dwiono ◽  
Safriyadi Hafid
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Shell Growth ◽  
Economic Value ◽  
Stocking Density ◽  
Seed Density ◽  
Total Production ◽  
Growth And Survival ◽  
Haliotis Asinina ◽  
The World

<p>Tropical abalones (Haliotis asinina) is a marine gastropod that has high economic value and consumed by people in the world. In 2002, the production of abalones was 4.076 ton from total production of marine fisheries in the world 8.000 ton. The countries that produce abalone by farming are Taiwan, Cina, South Africa, Japan, Cilie, USA, Australia and New Zealand. Information about the production in Indonesia is scarce. The main issue faced by farmer is higher mortality during post larvae and juvenile. The aim of this research was to observe the influence of abalone seed density in concrete tanks regarding to growth and survival. The research was conducted in January - May 2012 Mataram Marine Bio Industry Technical Implementation Unit, LIPI. Analysis of varians showed that seed densities was not significantly different (P&gt;0.05). The highest survival rate were in density 75 individual/tank with 11.11 % mortality. The highest growth rate were in 50 individual/tank with shell growth rate 0.21cm/14 days and seed weight was 1.23 g.</p><p>Keywords: growth, survival rate, seed of abalone (Haliotis asinina), density</p>

PREFERENSI PENEMPELAN, PERTUMBUHAN, DAN SINTASAN LARVA TERIPANG PASIR, Holothuria scabra PADA SUBSTRAT LAMUN YANG BERBEDA

2017 ◽  
Vol 11 (3) ◽  
pp. 249
Author(s):  
Lisa Fajar Indriana ◽  
Yuli Afrianti ◽  
Sitti Hilyana ◽  
Muhammad Firdaus Firdaus
Keyword(s):  
Survival Rate ◽  
Economic Value ◽  
Growth And Survival ◽  
Holothuria Scabra ◽  
Enhalus Acoroides ◽  
Randomized Design ◽  
Settlement Substrate ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Cymodocea Serrulata

Teripang pasir, Holothuria scabra merupakan komoditas hasil laut yang bernilai ekonomis tinggi. Penangkapan berlebihan stok di alam mendorong berkembangnya kegiatan budidaya. Penempelan merupakan fase kritis pada larva teripang karena terjadi peralihan sifat planktonis ke bentik yang memerlukan substrat. Penelitian ini bertujuan untuk mengetahui preferensi penempelan, pertumbuhan, dan sintasan larva H. scabra fase penempelan pada substrat lamun yang berbeda. Penelitian menggunakan metode rancangan acak lengkap dengan perlakuan empat jenis daun lamun berbeda dan lima ulangan. Perlakuan terdiri atas Enhalus acoroides (L-1), Syringodium isoetifolium (L-2), Cymodocea serrulata (L-3), dan Cymodocea rotundata (L-4). Jumlah awal larva sebanyak 1.000 individu dan substrat dirangkai dengan luasan yang sama sebesar 12 cm x 17 cm untuk setiap unit penelitian. Hasil penelitian menunjukkan jenis lamun yang digunakan sebagai substrat berpengaruh secara nyata terhadap preferensi penempelan dan sintasan larva teripang pasir, namun tidak berpengaruh terhadap pertumbuhan. E. acoroides menunjukkan hasil terbaik dengan preferensi penempelan 0,26 ind. cm-2 dan sintasan 10,66%; sehingga layak digunakan sebagai substrat penempelan dalam pembenihan teripang pasir, H. scabra.Holothuria scabra larvae on different seagrass substrates. By: Lisa Fajar Indriana, Yuli Afrianti, Sitti Hilyana, and Muhammad FirdausSandfish Holothuria scabra is marine commodities with a high economic value. Overfishing of natural stocks has compelled an interest to begin aquaculture practice. Settlement is a critical phase for the planktonic larvae as they will transform to benthic form in the presence of substrate. This study aims to evaluate the settlement preferences, growth, and survival rate of H. scabra larvae settled on different seagrass leaves. The research was conducted using the Completely randomized design with four different species of seagrass leaves and five replications. The treatments consist of Enhalus acoroides (L-1), Syringodium isoetifolium (L-2), Cymodocea serrulata (L-3), and Cymodocea rotundata (L-4). Initial number of larvae was 1,000 individuals and the substrate was set with same widthof 12 cm x 17 cm for each unit. Results of the experiment indicated that settlement preference and survival rate of H. scabra larvae was significantly affected by seagrass used as substrate while no significantly differences was observed for growth of larvae. E. acoroides showed the best result with 0.26 ind. cm-2 settelement preference and 10.66% survival rate, so that suitable to be used as settlement substrate in H. scabra hatchery.

Consumer Awareness, Consumer Protection, Service Quality and Loyalty: The Case of Long-term Insurance Consumers in Namibia

2019 ◽  
Vol 118 (8) ◽  
pp. 172-189
Author(s):  
Magreth B Tjizumaue ◽  
Krishna Govender
Keyword(s):  
Service Quality ◽  
Consumer Protection ◽  
Structural Equation ◽  
Insurance Industry ◽  
Business Practices ◽  
Consumer Awareness ◽  
Growth And Survival ◽  
Term Insurance ◽  
Protection Legislation

Due to the absence of appropriate Consumer Protection legislation in Namibia, there seems to be a lack of consumer protection, which may result in consumers being exploited. Since the literature reveals that Consumer Awareness, Consumer Protection, Service Quality and Customer Satisfaction influence Customer Loyalty, the aforementioned relationship was explored among consumers of long-term insurance products in Namibia. The researcher embedded the study in the Services Marketing and User’s Satisfaction/Dissatisfaction theory and developed a framework for creating a more aware consumer and thus contribute to the growth and survival of the long-term insurance industry in Namibia.  A survey was conducted using a questionnaire, among a judgmental sample of 407 long-term insurance consumers in Namibia and Structural Equation Modelling was used to analyse (eight) hypothesized relationships among the research constructs alluded to in the title of this study. In summary, it was ascertained that if the customers are fully aware (have sufficient knowledge of the products and their consumer rights), they will feel protected against unfair business practices. Furthermore, if they perceive having received quality services, they are more likely to be satisfied with the service provider and will therefore, remain loyal.

NATURAL FEEDING OF SLUDGE WORMS (Tubifex sp.) WITH DIFFERENT FEEDING RATE ON GROWTH AND SURVIVAL RATE OF CTENOPOMA (Ctenopoma acutirostre) FISH SEEDS

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
Muhammad Atilah Setiawan ◽  
Muarif Muarif ◽  
Fia Sri Mumpuni
Keyword(s):  
Survival Rate ◽  
Feeding Rate ◽  
Specific Growth ◽  
Feeding Frequency ◽  
Initial Weight ◽  
Growth And Survival ◽  
Randomized Design ◽  
Absolute Length ◽  
Test Fish ◽  
Completely Randomized Design

The aim of this study was to determine the growth and survival rate of Ctenopoma fish seeds. This study used a completely randomized design with 3 treatments and 3 replications. The treatment in this study was a different feeding rate using natural feed of Tubifex sp  namely A (8%), B (10%), and C (12%) ). The test fish used was Ctenopoma fish seeds with an initial length of 2.40 ± 0.10 cm and an initial weight of 0.32 ± 0.05 g. Fish seeds are cultivated  for 28 days with feeding frequency twice a day. The results of research showed that the use of different feeding rate had an significantly different (P<0.05) on the specific growth  rate and absolute length growth with the best results in the treatment C. The survival rate was not significantly different between treatments (P>0.05). Key Words: Ctenopoma, feeding rate, growth, survival rate 

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