ABSTRACT
Antheraea mylitta produces tasar silk and is an endemic species of the Indian subcontinent. Populations of this species show a certain degree of phenotypic variability for which they are designated as ‘ecoraces’. Inorder to study the genetic variability in relation to the environment among Daba T.V and Andhra local the life history of two ecorace from hatching to egg laying stage and the cocoon characters were enumerated. Andhra local ecorace has exhibited superior qualities in fecundity, shell ratio,silkyield,filament length,reelability and denier whereas mothemergence, larvalweight, cocoonweight,shell weightand effective rate of rearing have been encouraging in Daba T.V.Thus the variations in the above characters could be attributed to the genetic variability between the two ecoraces rather than the environment influence as they are reared under similar environment.
ABSTRACT
BACKGROUND: Since therapy of rectal carcinoma depends on the extent of disease, staging becomes important. AIM: To assess the ability of transrectal ultrasonography (TRUS) and computed tomography (CT) to stage rectal carcinoma. METHODS: Ten patients with rectal carcinoma were examined by TRUS and plain and contrast-enhanced CT scan; their findings were compared with each other and with those at surgery. RESULTS: TRUS identified wall invasion in all ten cases and perirectal fat infiltration in all five cases in whom these were present. Node involvement was detected in five cases on TRUS and two of six cases on CT. Metastasis to bladder (one case) was not recognized by TRUS but was seen on CT. CONCLUSION: TRUS is inexpensive and superior to CT in staging early rectal carcinoma; limited depth of penetration is its major limitation. CT is useful for the diagnosis of advanced disease.