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Main Title Effects of temperature on growth and reproduction of aquatic snails /
Author Van der Schalie, Henry, ; van der Schali, Henry ; Berr, Elmer G. ; Moun, Donald I.
Other Authors
Author Title of a Work
Berry, Elmer Gratiot
CORP Author Michigan Univ., Ann Arbor. Museum of Zoology.
Publisher Office of Research and Monitoring, U.S. Environmental Protection Agency [for sale by the Supt. of Docs., U.S. Govt. Print. Off.],
Year Published 1973
Report Number EPA R373 021; EPA-18050-FOG
Stock Number PB-221 549
Subjects Gastropoda--Physiology ; Freshwater biology ; Temperature--Physiological effect
Additional Subjects ( Snails ; Thermal stresses) ; ( Animal growth ; Snails) ; ( Water pollution ; Snails) ; Reproduction(Biology) ; Aquatic animals ; Temperature measurement ; Ponds ; Lymnae stagnalis ; Lymnae emarginata ; Helisoma trivolvis ; Helisoma anceps ; Helisoma campanulatum ; Physa gyrina ; Thermal pollution ; Water pollution effects(Animals)
Library Call Number Additional Info Location Last
NTIS  PB-221 549 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xiii, 164 pages : illustrations ; 27 cm.
Abstract The effects of temperature on the following freshwater snails were studied: Lymnaea stagnalis, L. emarginata, Helisoma trivolvis, H. anceps, H. campanulatum and Physa gyrina -- all pulmonate 'pond' snails; one gill-breathing operculate (Amnicola limosa); was also tested. Both growth and egg-laying were measured in temperatures ranging from 6 to 36C. Gonad development was determined through serial paraffin sections; reproduction was measured in terms of egg-laying. The lymnaeids grow best at 18C; egg production is better at 22C. In contrast, the planorbids grow better under warmer conditions (about 25C); however, when 30C is reached growth may appear better but reproduction is inhibited. (Modified author abstract)
Notes "Contract no. 14-12-441. Project 18050 FOG." Includes bibliographical references (pages 157-164). Microfiche.
Place Published Washington, D.C.,
Supplementary Notes Prepared in cooperation with National Water Quality Lab., Duluth, Minn.
Availability Notes Paper copy available from GPO $2.35 as EPl.23:73-021.
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Research and Monitoring.
PUB Date Free Form 1973.
Series Title Traced Ecological research series, ERA-R3-73-021
BIB Level m
Cataloging Source OCLC/T
OCLC Time Stamp 20040211133058
Language eng
Origin NTIS
OCLC Rec Leader 01245nam 2200301Ka 45020