Efek Konsentrasi Sublethal Fenol Terhadap Total Haemocyte Count (THC) dan Histologi Insang Kepiting Bakau (Scylla serata)

Abstract The presence of phenols which exceeds the threshold into the aquatic ecosystem can be a chemical stressors to aquatic organisms, as well as for estuarine ecosystems because of the estuary (estuary) is a regional meeting between fresh water from sea water and river waters contain chemicals, so the potential anthropogenic. Mud crab (Scylla spp.) Has a life cycle that are mostly located in the mangrove ecosystem and commonly used in ecotoxicity studies. Total Haemocyte Count (THC) and gill histology of organs can inform the histological changes caused by due to exposure to toxic stressors, especially phenol. Sublethal treatment with different concentrations of phenol of mangrove crab (S. serata) on day 1, day 3, day 5 and day 8 there were no significant differences (p>0.05) (Appendix) to the average amount of THC (Total Haemocyte Count). However, on day 7 showed a decrease of THC in each treatment when compared with controls (without treatment). Histological changes that occur increases with the concentration of phenol is treated to mud crab (S. serata). Histological changes that occur is damage to the structure of the gills lamela (l) and the outer portion of an outer lamellar sinus or sinuses lamela (OLS), which includes hemosit infiltration, hyperplasia and necrosis. Keywords: crab, gill crab, haemocytes, hemocyte infiltration, hyperplasia, necrosis, Scylla serata, THC (Total Haemocyte Count).