Influence of temperature on egg development times of three species of Diaptomus from subtropical Florida

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Am. Midl. Nat.; (United States)

DOI:https://doi.org/10.2307/2425410· OSTI ID:5997794

Elmore, J L

Egg development times were determined at 15, 20, 25 and 31 C using regression and direct methods for subtropical populations of Diaptomus dorsalis, D. floridanus and D. mississippiensis. Estimates derived by the regression method were significantly different from those of the direct method in three of eight comparisons. Analysis indicated that the direct method results in estimates that are more reliable than the regression estimates. Statistical problems with the regression and direct methods are discussed. Eggs of Diaptomus dorsalis developed most rapidly, followed by D. floridanus, with D. mississippiensis slowest. Differences in egg size, predation and competition pressure, and latitudinal distribution may be important in causing the disparities in egg development times among the three species. A strong diel periodicity in egg laying and hatching was found for D. dorsalis at 31 C. Diaptomus dorsalis and D. floridanus exhibited faster egg development rates at 25 and 31 C than other freshwater calanoids reported in the literature. 32 references, 4 figures, 1 table.

• Research Organization: Univ. of South Florida, Tampa
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5997794
• Journal Information: Am. Midl. Nat.; (United States), Journal Name: Am. Midl. Nat.; (United States) Vol. 109:2; ISSN AMNAA
• Country of Publication: United States
• Language: English

Related Subjects

560204* -- Thermal Effects-- Invertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
CELL DIFFERENTIATION
COMPARATIVE EVALUATIONS
COPEPODS
CRUSTACEANS
DATA
EGGS
EXPERIMENTAL DATA
HATCHING
INFORMATION
INVERTEBRATES
MATHEMATICS
NUMERICAL DATA
REGRESSION ANALYSIS
SIZE
SPECIES DIVERSITY
STATISTICS
TEMPERATURE EFFECTS