Accession Number:

AD0895931

Title:

Isaacs-Kidd Midwater Trawl

Descriptive Note:

Final rept.

Corporate Author:

SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA

Report Date:

1953-01-10

Pagination or Media Count:

26.0

Abstract:

The Isaacs-Kidd Midwater Trawl collects bathypelagic biological specimens larger and more active than those taken by standard plankton nets. The trawl consists essentially of a net of special design attached to a wide, V-shaped, rigid diving vane. The vane keeps the mouth of the net open and exerts a depressing force, maintaining the trawl at depth for extended periods at towing speeds up to five kt. The inlet opening is unobstructed by the towing cable. The new trawl has been successfully tested to a depth of approximately 3700 m. It has already collected several species of bathypelagic fishes not reported from the Pacific before, and species new to scientific literature. This report describes the tests conducted to evaluate the device, discusses the results, and includes sections on conclusions and recommendations for further work.

Subject Categories:

  • Biology
  • Biological Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE