scholarly journals Cyanobacteria reduction in the integrated culture of Pacific white shrimp and West India pointed venus in a biofloc system

2021 ◽  
Vol 16 (1) ◽  
pp. 75-82
Author(s):  
P.C.M. Lima ◽  
◽  
M.M.S. Luna ◽  
C.V.F.S. Campos ◽  
E.P. Santos ◽  
...  

This study aimed to evaluate the integrated culture of the Pacific white shrimp (Litopenaeus vannamei) and the West Indian pointed venus (Anomalocardia flexuosa) reared in a biofloc system. The performance of both species and the phytoplankton community were evaluated. Shrimp monoculture and three stocking densities of West Indian pointed venus (2.5, 5.0 and 7.5 Kg m-3) were evaluated in 0.05 m3 tanks. First of all, the addition of A. brasiliana did not affect the water quality parameters of the culture. Regarding the phytoplankton community, 13 taxa were found: 5 cyanobacteria, 4 dinoflagellates, 3 diatoms and 1 green algae. Although diatoms were dominant at the beginning of cultivation, in the middle and at the end a cyanobacterial dominance was observed (proven by ANOSIM and nMDS). The taxa that most contributed to the abundance of cyanobacteria were Aphanocapsa sp. and Pseudanabaena sp. Regarding the performance of the shrimp, all integrated treatments present the higher growth performances (final weight, yield and survival) when compared to shrimp monoculture. Moreover, gradual mortalities of A. brasiliana were observed, probably due to the high concentration of cyanobacteria. Thus, it can be observed that the integration of molluscs in shrimp culture can reduce the concentration of harmful algae and improve the zootechnical performance of the shrimp.

2018 ◽  
Vol 11 ◽  
pp. 24-30 ◽  
Author(s):  
Juan M. Pacheco-Vega ◽  
Marco A. Cadena-Roa ◽  
Jesús A. Leyva-Flores ◽  
O. Iram Zavala-Leal ◽  
Elizabeth Pérez-Bravo ◽  
...  

2018 ◽  
Vol 6 (2) ◽  
pp. 691
Author(s):  
Luqman Hakim ◽  
Supono Supono ◽  
Yudha Trinoegraha Adiputra ◽  
Sri Waluyo

Pacific white shrimp (Litopenaeus vannamei) is new species were culture to replace tiger shrimp (Penaeus monodon) in Purworejo village, Pasir Sakti sub-district of East Lampung residence. This study was purposed to investigate culture performances of Pacific white shrimp in semi intensive system in two farmer groups. Eight ponds with ± 2100 m2/ ponds and density of 60 ind/m2 was used for this study. Results showed that Pacific white shrimp performances was different among two farmer groups. Sido Makmur group showed better performance compared to Lestari Gemilang with showed of ponds productivity 1337,8 kg and 1330,3 kg, respectively. FCR and SR among two groups also showed different, there were 1,88 to 2,39 and 86,95% to 63,3%, respectively. High mortality after WSSV infection was decreased pond productivity. Water quality parameters such as ammonia (0,029-0,031 ppm) and light density (<40 cm) were not suitable for shrimp culture impacted to pond productivity. WSSV infection and water quality parameters had corellation to pond performances.


2008 ◽  
Vol 3 (2) ◽  
pp. 139 ◽  
Author(s):  
Taukhid Taukhid ◽  
Yani Lestari Nur’aini

The aquaculture industry in Indonesia has been growing rapidly and plays an important role in rural development and export earning. Penaeid shrimp culture in Indonesia has become a leading export earning in fisheries sector. The main constraint encountered with shrimp culture has always been associated with disease outbreaks, especially, caused by viral agents. The Pacific white shrimp (Litopenaeus vannamei) was unofficially introduced to Indonesia in 1999, and officially approved by Indonesian government in 2001. By the end of 2007, the Pacific white shrimp has been cultured in more than 17 provinces. The Taura Syndrome (TS) disease was detected in Indonesia in 2002, and the disease is currently found in at least 10 provinces. The Infectious Myonecrosis (IMN) is an emerging disease for L. vannamei in Indonesia, first detected in May-June 2006, causing significant mortalities in grow-out ponds. The IMN is characterized by an acute onset of gross signs: focal to extensive whitish necrotic areas in the striated muscle, especially on the distal abdominal segments and tail fan. White necrotic areas become reddened similar to the color of cooked shrimp. The outbreak resulted in elevated mortalities was initially associated with a chronic course of persistent low level mortalities. Up to date, IMN was detected in East Java, Bali, and West Nusa Tenggara provinces. This paper is a brief review of the epidemiological study of IMN disease of Pacific white shrimp in Indonesia: the status of outbreaks, surveillance, and disease diagnosis, and control measures.


2010 ◽  
Vol 9 (1) ◽  
pp. 76
Author(s):  
Iis Diatin ◽  
U. Kusumawardany

<p>Pacific white shrimp is one of the primadona of fishery commodities. This shrimp is superior as it resists to diseases and also high productivity. Jati Hasil Diri (JHD) located in Cantigi Indramayu is one of the pacific white shrimp culture company. In order to develop the business, this company planned to extent their pond area from 26 to 42 Ha. This plan was therefore needed to be financially analyzed to confirm its feasibility. There were two different scenarios of area extension, first scenario was to extent pond area without any technical improvement, and the second scenario was to extent pond area with technical improvement. The result of the study shows that the pond area extension was feasible with NPV of Rp7.221.427.150,00  and  Rp29.867.006.067,00, the net B/C of  2,62 and 7,7  and  also the  IRR of 47,84%  and 146,55% for the first and second scenario, respectively. Sensitivity analysis indicated that the business is still feasible to be operated at a maximal of feed price the increase of 38,84% for the first scenario and 119,36% for the second scenario or if the shrimp price decrease with a maximum decrease of 18,81% and 41,12% at first and second scenario, respectively. The first business scenario is more sensitive as compare to the second scenario.</p> <p><em>Key words</em>: Pacific white shrimp, Cantigi Indramayu, pond, technical improvement, sensitivity analysis</p> <p> </p> <p>ABSTRAK</p> <p>Udang vaname merupakan salah satu komoditas perikanan yang menjadi primadona, karena keunggulannya yaitu tahan terhadap penyakit dan menghasilkan produktivitas yang cukup tinggi. Usaha Jati Hasil Diri (JHD) di Cantigi Indramayu adalah salah satu perusahaan yang bergerak dalam usaha budidaya udang vaname. Dalam rangka mengembangkan usahanya, perusahaan berencana untuk menambah  luas lahan tambaknya dari 26 Ha menjadi 42 Ha. Sehingga perlu dikaji melalui analisis kelayakan finansial, apakah penambahan luas lahan ini layak atau tidak untuk diusahakan. Pengembangan ini menggunakan dua skenario yaitu skenario pertama adalah perluasan lahan   tanpa ada perbaikan teknis dan skenario ke dua adalah   perluasan lahan yang disertai dengan perbaikan teknis. Hasil analisis menunjukkan bahwa pengembangan luas lahan  pada  Usaha JHD layak untuk diusahakan  dengan  nilai NPV  pada skenario 1 dan 2 masing-masing sebesar  Rp7.221.427.150,00 dan  Rp29.867.006.067,00, net B/C sebesar 2,62 dan 7,7 dan IRR sebesar 47,84% dan 146,55%. Analisis sensitivitas menunjukkan bahwa usaha masih layak dijalankan jika terjadi kenaikan harga pakan udang  pada skenario 1 maksimal sebesar 38,84%  dan skenario 2 sebesar 119,36%, sedangkan penurunan harga jual udang  vaname  maksimal pada skenario 1 sebesar 18,81% dan skenario 2 sebesar 41,12%.  Pengembangan usaha pada skenario 1 lebih sensitif dibandingkan skenario 2.</p> <p>Kata kunci: Udang vaname, Cantigi Indramayu, tambak, perbaikan teknis, analisis sensitivitas</p>


2011 ◽  
Vol 43 (5) ◽  
pp. 745-755 ◽  
Author(s):  
Xiang-he Liu ◽  
Ji-dan Ye ◽  
Kun Wang ◽  
Jiang-hong Kong ◽  
Wei Yang ◽  
...  

Aquaculture ◽  
2021 ◽  
pp. 736905
Author(s):  
Aya S. Hussain ◽  
Deyaaedin A. Mohammad ◽  
Wafaa S. Sallam ◽  
Nahla M. Shoukry ◽  
D. Allen Davis

Sign in / Sign up

Export Citation Format

Share Document