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RECORD NUMBER: 14 OF 25

OLS Field Name OLS Field Data
Main Title Life History and Toxicological Comparisons of Temperate and Subtropical Mysids.
Author Lussier, S. M. ; Kuhn, A. ; Chammas, M. J. ; Sewall, J. ;
CORP Author Environmental Research Lab., Narragansett, RI. ;Science Applications International Corp., Narragansett, RI. Environmental Testing Center. ;Rhode Island Univ., Kingston. Coll. of Business Administration.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-91/292 ;ERLN-916;
Stock Number PB92-124304
Additional Subjects Toxicology ; Life cycles ; Tropical regions ; Temperate regions ; Comparison ; Species diversity ; Reproduction(Biology) ; Toxic substances ; Survival analysis ; Reprints ; Mysidopsis bahia ; Mysidopsis bigelowi
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NTIS  PB92-124304 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 02/24/1992
Collation 15p
Abstract
Field and laboratory-cultured populations of the temperate mysid Mysidopsis bigelowi were compared with Mysidopsis bahia to assess the former's suitability as a test organism for toxicological studies. Mysidopsis bigelowi is widely distributed and often sympatric with M. bahia. a well-established subtropical test species. The overall sex ratio for both species was 1.0, and both had a similar intermolt period at 20 C, but M. bigelowi had a longer intermolt period at 25 C. The correlation of female length to the number of young per brood was strongly linear for cultured M. bahia and for pooled natural populations of M. bigelowi. Despite a decrease in size of females and in number of young produced by the temperate mysid over the summer season, productivity of June and July field collections exceeded that of cultured subtropical females, and developmental times were similar. Cultures of the two species were similar in numbers of young produced, although the first brood of M. bahia developed earlier. The mean life span and intrinsic rate of growth for M. bahia were twice those for M. bigelowi, although generation times were similar. Acute toxicity tests showed similar sensitivity for both species to seven compounds when 96-h LC50s (concentrations lethal to 50% of mysids) were compared.