scholarly journals Effect of parental age and associated size on fecundity, growth and survival in the yellow seahorse Hippocampus kuda

2006 ◽  
Vol 209 (16) ◽  
pp. 3055-3061 ◽  
Author(s):  
B. Dzyuba
Keyword(s):  
Parental Age ◽  
Growth And Survival ◽  
Hippocampus Kuda

Evaluation of Different Live Foods on Growth and Survival of Seahorse Fish (Hippocampus kuda, Signathidae) Ponies

2007 ◽  
Vol 20 (1) ◽  
Author(s):  
H.B. DHAMAGAYE
Keyword(s):  
Live Food ◽  
Biological Research ◽  
Research Station ◽  
Poor Growth ◽  
Growth And Survival ◽  
Survival Percentage ◽  
Artemia Nauplii ◽  
Hippocampus Kuda ◽  
Weight Gain Percentage ◽  
Length Gain

Seahorse (Hippocampus kuda,Signathidae) ponies were reared for 15 days at the laboratory of Marine Biological Research Station, Ratnagiri (India) using three types of live food viz Artemia nauplii, rotifers (Branchionus plicatilis) and a combination of both. The experiment was conducted in all glass aquaria (0.30 m x 0.30 m x 0.30 m). Seahorse ponies (10 + 0.27 mm) were stocked at 2 L-1 and fed with nutritional live food ad libitum. After 15 days of rearing, the ponies were counted and their individual lengths and weights were recorded. Significantly higher (P< 0.05) weight gain percentage (128.92 + 1.27%) of seahorse ponies, length gain percentage (57.4 + 0.82%), SGR percentage per day (5.53 + 0.04% day–1) and survival percentage (100%) of seahorse ponies were observed in the combination of Artemia nauplii and rotifers as food compared with Artemia nauplii or rotifer alone. Rotifers as live food resulted in poor growth and survival of seahorse ponies under this experimental condition.

The effect of parental age, experience and historical reproductive success on wandering albatross (Diomedea exulans) chick growth and survival

Polar Biology ◽  
2014 ◽  
Vol 37 (11) ◽  
pp. 1633-1644 ◽  
Author(s):  
M. Genevieve W. Jones ◽  
Ben J. Dilley ◽  
Quentin A. Hagens ◽  
Henk Louw ◽  
Edith M. Mertz ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Parental Age ◽  
Chick Growth ◽  
Growth And Survival ◽  
Diomedea Exulans ◽  
Wandering Albatross

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 

Sign in / Sign up

Export Citation Format

Share Document