Open AccessAssociation of bioluminescent bacteria from blue swimmer crab Portunus pelagicus (Linneaus, 1758)
Author(s) -
C. Govindasamy,
R. Srinivasan
Publication year - 2012
Publication title -
asian pacific journal of tropical disease
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.208
H-Index - 33
ISSN - 2222-1808
DOI - 10.1016/s2222-1808(12)60246-1
Subject(s) - portunus pelagicus , salinity , biology , vibrio harveyi , bay , hemolymph , bioluminescence , zoology , seawater , population , fishery , bacteria , vibrio , ecology , crustacean , oceanography , genetics , demography , sociology , geology
Objective: To screen the bioluminescent bacteria from Portunus pelagicus (P. pelagicus) at\udThondi coast, Palk Strait, Bay of Bengal, India. Methods: Physico-chemical parameter including\udatmospheric and surfacewater temperature, pH, salinity and dissolved oxygen were analyzed.\udThe population of bioluminescent bacterium was screened in ambient water and blue swimmer\udcrab of P. pelagicus (muscle, gill, hemolymph, shell) and colony forming unit (CFU) was calculated.\udResult: Atmospheric and surface water temperatures varied from 26.1 and 27.3 °C to 33.4 and 32.6 °C,\udrespectively; salinity varied from 28.4% to 34.3%, pH varied from 7.6 to 8.6, and dissolved oxygen\udvaried from 4.8 to 6.9 O2 ml/l. In addition, the maximum CFU value was identified (12.63 x104\udCFU/ml) during postmonsoon season and the minimum level (1.09 x104 CFU/ml) identified during\udsummer season. Further, based on the phenotypic characterizations the isolated strain were\udidentified as Vibrio harveyi (V. harveyi). Conclusions: It is concluded from that the incidence of V.\udharveyi infections was frequently identified with edible crab of P. pelagicus, throughout the study\udperiods in different seasons