First assessment of the potential for coculture of sandfish (Holothuria scabra) with Babylon snail (Babylonia areolata) in Vietnam
28/03/23 04:17PM
Dobson, Gregory T; Duy, Nguyen D Q; Southgate, Paul C. Journal of the World Aquaculture Society; Baton Rouge Vol. 51, Iss. 2, (Apr 2020): 527-541. DOI:10.1111/jwas.12676
Abstract
The potential for the coculture of
sandfish, Holothuria
scabra and Babylon snail, Babylonia
areolata was investigated. Sandfish (weight 1.87 ± 0.41 g) were
cultured at low (25 ind/m2; 46.75 g/m2), medium (50 ind/m2;
93.5 g/m2), and high (100 ind/m2; 187 g/m2)
densities in monoculture and in coculture with Babylonia at
a density of 400 ind/m2 (208 g/m2). In monoculture, sandfish were provided
with 1 g m−2 day−1 commercial prawn starter feed. In
coculture, trash fish provided for Babylonia (5%
total wet weight per day) was the only food input. Sandfish survival over the
84‐day experiment period was reduced in coculture treatments (77.60 vs. 97.22%)
but was in line with expected survival rates (80–90%) of commercial sandfish
culture. Mean sandfish weight gain and absolute growth rate were around 37%
greater in coculture (mean weight gain 13.42 ± 2.90 g vs. 9.77 ± 2.54 g over
84 days). No differences in Babylonia growth
rate or survival were evident between sandfish density treatments. Sediment
organic matter content did not differ significantly between monoculture
(0.43 ± 0.03%) and coculture (0.55 ± 0.06%) treatments, but the latter had
elevated concentrations of ammonia. Results provide a basis for further
development of land‐based pond coculture systems for sandfish and Babylonia.
Fulltext:https://doi.org/10.1111/jwas.12676
(Source:https://www.proquest.com/scholarly-journals/first-assessment-potential-coculture-sandfish/docview/2392626467/se-2)