Accession Number:

AD0499983

Title:

Semi-Annual Progress Report January 1951.

Descriptive Note:

Corporate Author:

MIAMI UNIV FL MARINE LAB

Personal Author(s):

Report Date:

1951-01-01

Pagination or Media Count:

36.0

Abstract:

The distribution and growth rate of marine borers in the Miami area was continued during the past six months. Attack intensity, growth rate, temperature, salinity, and plankton weight, volume and pigments were observed. Maximum attack and growth occur in summer, at a time of temperature maximum and a peak of plankton volume. Studies on carbohydrate metabolism show little seasonal variation. An apparatus for studying the respiration of adult teredids, in or out of wood, is described. A hydrodynamic mechanism which allows the soft-bodied organism to operate its boring shells was investigated. Attempts to identify food organisms by radio isotope tagging of plankton were not successful. Histology of Teredo was studied. Distribution of acid phosphatase in the organism was observed by histochemical methods. Summaries are given of experimental results whereby a method is now available for evaluating toxic preservatives by observing their effect upon teredid larvae. A number of other tests are described in connection with materials submitted by cooperating agencies.

Descriptors:

• (*MARINE BIOLOGY
• FLORIDA)
• (*MARINE BORERS)
• GROWTH(PHYSIOLOGY)
• TEMPERATURE
• SALINITY
• SEA WATER
• PLANKTON
• VIABILITY
• METABOLISM
• GLYCOGEN
• RESPIRATION
• MEASURING INSTRUMENTS
• HISTOLOGY
• PRESSURE
• LARVAE
• FOOD
• PIERS
• COPPER COMPOUNDS
• CREOSOTE
• AMMONIUM COMPOUNDS
• PROTECTIVE TREATMENTS
• DAMAGE CONTROL

Subject Categories:

• Anatomy and Physiology
• Biological Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE