Modified venturi suction sampler for collecting Asiatic clams

Journal Article · Sun Jul 01 04:00:00 EDT 1979 · Prog. Fish-Cult.; (United States)

DOI:https://doi.org/10.1577/1548-8659(1979)41[121:MVSSFC]2.0.CO;2· OSTI ID:5267219

Mattice, J S ^[1]; Bosworth, W

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1. Oak Ridge National Lab., TN

A device for collecting quantitative samples of the Asiatic clam, Corbicula sp., is described. The sampler is a modified venturi that is normally operated by a diver using scuba. Constriction of the water flow in the sampler supplies a pressure differential, causing water to be sucked in through a side arm. Water to operate the venturi is supplied by a gasoline-powered pump on a boat, and is conducted to the sampler by a flexible fire hose 7.6 cm (3 in.) in diameter. The sampler is constructed of polyvinylchloride. Suction lifts the substrate and associated clams from a sampling frame placed on the bottom and the main water stream carries the clams through a discharge arm to a mesh collection bag. The sampler is efficient in gravel or rocky substrates, is not depth-limited, is inexpensive and easy to construct, and permits collection of large samples (0.25 m/sup 2/). Its use permits the accurate density estimates required for population and community studies.

• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5267219
• Journal Information: Prog. Fish-Cult.; (United States), Journal Name: Prog. Fish-Cult.; (United States) Vol. 41:3; ISSN PFCUA
• Country of Publication: United States
• Language: English

Related Subjects

520100* -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
ANIMALS
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
DESIGN
ECOSYSTEMS
INVERTEBRATES
LABORATORY EQUIPMENT
MOLLUSCS
POPULATIONS
SAMPLERS
SAMPLING