Accession Number : AD0686848

Title :   STUDIES ON THE EMBRYOLOGY, PIGMENTS AND GLUCOSE METABOLISM OF THE marine borer, BANKIA SETACEA.

Descriptive Note : Final rept. 1 Apr 64-31 Mar 69,

Corporate Author : BRITISH COLUMBIA RESEARCH COUNCIL VANCOUVER

Personal Author(s) : Walden,Cecil C.

Report Date : 25 APR 1969

Pagination or Media Count : 25

Abstract : B. setacea was reared in the laboratory, from the germ cell stage to larval metamorphosis. Asepsis, by tissue culture techniques and antibiotics, was essential. Sexual differences in exhalant siphons of B. setacea were observed, as well as instances of internal fertilization. Fertilized ova are more dense than sea water. Certain external conditions, particularly salinites below 12 o/oo, caused loss of control of organized development in fertilized ova. Large masses of single cells, even motile ciliated cells, were produced. The pigment contained in B. setacea siphons was demonstrated to be an iron porphyrin, indistinguishable, on the basis of spectra and chromatographic behaviour, from sheep blood protoporphyrin IX. The presence of a number of intermediate metabolic pathways in the marine-borer caecum was demonstrated, including the Embden-Meyerhof pathway, the pentose cycle, the citric acid cycle and the non-triose phosphate pathway. Intermediate compounds were identified and specific activity of enzymes was measured. The pentose cycle accounted for 3% of glycolysis in the caecum. A short one-step assay for cellobiase was developed. (Author)

Descriptors :   (*MARINE BORERS, BIOLOGY), EMBRYOLOGY, ORGANIC PIGMENTS, GLUCOSE, METABOLISM, LARVAE, METAMORPHOSIS, CELL DIVISION, REPRODUCTION(PHYSIOLOGY), BLOOD ANALYSIS, SALINITY, ENZYMES, PENTOSES, CHROMATOGRAPHIC ANALYSIS, IRON COMPOUNDS, OXYGEN, GLYCOLYSIS, OXIDOREDUCTASES, CANADA

Subject Categories : Anatomy and Physiology
      Biological Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE