FT Vol.27(2)

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Browsing FT Vol.27(2) by Author "SHANMUKHAPPA, H"

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    Comparative Toxicity of Four Detergents on a Prawn Metapenaeus dobsoni (Miers)
    (Society of Fisheries Technologists (India) Cochin, 1990) SAKUNTHALA, B; SHANMUKHAPPA, H; NEELAKANTAN, B
    The toxicity bioassay experiment was conducted using four detergents, namely, linear alkylbenzene sulfonate (LAS), branched alkylbenzene sulfonate (BAS), alfa olefin sulfonate (AOS) and sodium sulfonate (SS.) 0.1 Metapenaeus dobsoni juveniles. The results indicated that, LAS was most toxic and AOS the least and were in the order: LAS>SS. >BAS>AOS. The LCN, LC50 and LC84 concentrations for all the detergents were calculated for 24, 48, 72 and 96 hours. The 95 % confidence limits for LC50 and slopes were also calculated by probit analysis.
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    Copper, Chromium and Manganese in Some Fishes of Kali Estuary, Karwar
    (Society of Fisheries Technologists (India) Cochin, 1990) VEER, M. P; BHAT, U. G; SHANMUKHAPPA, H
    Copper, chromium and manganese concentrations in the gill, muscle body and whole samples of four estuarine fishes, namely, Mugil cephalus, Sillago sihama, Leiogna- thus brevirostris and Gerromorpha sety"er were determined during the period July- November, 1989. Concentrations of these metals in different body parts varied from species to species. The three trace metals in M. cephalus, S. sihama and L. brevirostris in whole body were in the order Mn > Cr >Cu whereas in G.setQ‘er the abundance was in the order Cr >Cu >Mn. Significant correlation was observed between concentration of metals in gills and whole body in all species except M. cephalus. Considering the trace metals concentration in relation to wet weight, all the metals are within safety limits in edible part.