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. 2016 Aug 24:6:31810.
doi: 10.1038/srep31810.

A highly sensitive underwater video system for use in turbid aquaculture ponds

Chin-Chang Hung  1   2 , Shih-Chieh Tsao  1 , Kuo-Hao Huang  1 , Jia-Pu Jang  3 , Hsu-Kuang Chang  3 , Fred C Dobbs  2
Affiliations

A highly sensitive underwater video system for use in turbid aquaculture ponds

Chin-Chang Hung et al. Sci Rep. .

Abstract

The turbid, low-light waters characteristic of aquaculture ponds have made it difficult or impossible for previous video cameras to provide clear imagery of the ponds' benthic habitat. We developed a highly sensitive, underwater video system (UVS) for this particular application and tested it in shrimp ponds having turbidities typical of those in southern Taiwan. The system's high-quality video stream and images, together with its camera capacity (up to nine cameras), permit in situ observations of shrimp feeding behavior, shrimp size and internal anatomy, and organic matter residues on pond sediments. The UVS can operate continuously and be focused remotely, a convenience to shrimp farmers. The observations possible with the UVS provide aquaculturists with information critical to provision of feed with minimal waste; determining whether the accumulation of organic-matter residues dictates exchange of pond water; and management decisions concerning shrimp health.

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Figures

Figure 1
Figure 1. The underwater video system (UVS) used in shrimp ponds of different turbidities at the campus of National Sun Yat-Sen University.
Pond 1: low turbidity water (TSM = 4.4~6.4 mg/L, mean value = 5.6 ± 0.9 mg/L, n = 4), Pond 2: low turbidity water (TSM = 5.2~8.5 mg/L, mean value = 6.8 ± 1.4 mg/L, n = 4), Pond 3: high turbidity water (TSM = 27~73 mg/L, mean value = 48 ± 17 mg/L, n = 5). PoE = Power over Ethernet. TSM: total suspended matter.
Figure 2
Figure 2. Concentrations of total suspended matter (TSM) in shrimp ponds from different locations.
P-1 to P-3 (within red rectangle) represent concentrations of TSM in shrimp ponds 1, 2, and 3 respectively. Other TSM concentrations are from lakes (labeled L-A and L-B) or shrimp/fish farms (labeled P-A1 to P-G; PA-1 and PA-2 represent duplicate sampling at pond A) in southern Taiwan.
Figure 3
Figure 3
Images showing formulated feed pellets (within red circles) upon the bottom of ponds having different turbidities (panels A,C,E: before feeding at ponds 1, 2 and 3; panels B,D,F: during feeding at ponds 1, 2, and 3).
Figure 4
Figure 4
(A) A furrow in the surface layer of detritus (red oval) indicates the thick layer of organic matter on the sediments in shrimp pond 1. (B) Two shrimp immediately in front of a white ruler (scale bar = 15 cm) affixed to a brick. (C) Image of a grouper in a turbid pond. (D) Image of multiple shrimp at night. At light levels <15 lux, black and white images, not color, are returned.
Figure 5
Figure 5. Relationship between estimated length (from video image) and measured length of shrimp.
See this image and copyright information in PMC

References

    1. The aquaculture round Table series-a shared vision for aquaculture in Asia. 20–21 August, Phuket, Thailand (2014).
    1. Kongkeo H. Comparison of intensive shrimp farming systems in Indonesia, Philippines, Taiwan and Thailand. Aqua. Res. 28, 789–796 (1997).
    1. Jackson C., Preston N., P. J. Thompson P. J. & Burford M. Nitrogen budget and effluent nitrogen component at an intensive shrimp farm. Aqua. 218, 397–41 (2003).
    1. Zheng Y. et al. Comparison of cultivable bacterial communities associated with Pacific white Shrimp (Litopenaeus vannamei) larvae at different health statuses and growth stages. Aqua. 451, 163–169 (2016).
    1. Bador R., Blyth P. & Dodd R. Acoustic control improves feeding productivity at shrimp farms. Global aqua. advocate. Nov./Dec. 77–78 (2013).

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