Open AccessCONTROL OF Zoothamnium sp. ON PENAEID SHRIMP
Author(s) -
Johnson Sterling K.,
Parker Jack C.,
Holcomb Hoyt W.
Publication year - 1973
Publication title -
proceedings of the annual workshop ‐ world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 1043-5166
DOI - 10.1111/j.1749-7345.1973.tb00116.x
Subject(s) - shrimp , penaeus , fishery , gill , orange (colour) , infestation , biology , veterinary medicine , fish <actinopterygii> , food science , botany , medicine
Mortalities of two commercial shrimp, Penaeus aztecus and P . setiferus used in pond culture experiments conducted by Texas A&M University in Brazoria and Orange counties, Texas, were caused by Zoothamnium sp. Mortality was attributed to anoxia when the infestation of the protozoan became heavy enough around the gills of the shrimp to restrict oxygen exchange and was prevalent when the dissolved oxygen level in the ponds dropped below 3 ppm. Tests for a potential chemical control demonstrated that 25 ppm fonnalin was effective and subsequent pond treatment yielded satisfactory results.