WILSON ET AL.: EFFECT OF SNAIL ON OYSTERS 



Table 7.— Results of Duncan's multiple range test for biochemical components of the mantle and adductor muscle. Each test considered 

 data for one biochemical component (one vertical group of 5 means) for each tissue. Different letters within a vertical group indicate 

 significant differences at a = 0.05 within that group. 



Table 8. — Results of Duncan's multiple range test for free amino acids in the mantle tissue and 

 adductor muscle. Each test considered data for one biochemical component (one vertical group 

 of 5 means) for each tissue. Different letters within a vertical group indicate significant differences 

 at a = 0.05 within that group. Tau = taurine; Hyp = hypotaurine; Asp = aspartic acid; Ser 

 = serine; Glu = glutamic acid; Gin = glutamine; Gly = glycine; Ala = alanine; FAA = total 

 for the amino acids measured; FAA- = FAA less taurine and hypotaurine; FAA- = FAA less 

 taurine, hypotaurine, glycine, and alanine. 



Table 9.— Significant P-values obtained by MANCOVA from comparison of snail scale and Perkinsus mahnus infection intensity. Tests 

 using snail scale considered only the parasitized oysters after the treatment period and the previously parasitized oysters after the recovery 

 period. Tests using P. mahnus considered all oysters, controls and snail parasitized. Abbreviations same as Table 8. M = mantle 

 tissue; A = adductor muscle; — = not significant in either tissue at o = 0.05. 



Lipid 

 Gly- phosphate 

 cogen (as PO4 ^) 



Fatty 

 acids 



Tau Hyp Asp Thr Ser Glu Gly Ala FAA FAA- FAA- Protein 



Treatment 



Snail scale 



Perkinsus mahnus 

 Recovery 



Snail scale 



Perkinsus mahnus 



— 0.02(A) — — — — ___— — — 



— — _ _ _ 0.004(A) — — ——— — 



— 0.03(M) 0.002(A) 



— 0.04(A) — — — — — ———— 0.004(M) 



561 



