THE EFFECT OF VARYING AND CONSTANT TEMPERATURES ON THE SIZE OF A MARINE COPEPOD1

• Published in: Limnology and Oceanography
• Main Authors: LOCK, ANTHONY R., MCLAREN, IAN A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1970
• Subjects: Aquatic Science; Oceanography; Pseudocalanus minutus
• Online Access: http://dx.doi.org/10.4319/lo.1970.15.4.0638; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1970.15.4.0638; https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1970.15.4.0638

Stage three copepodites of Pseudocalanus minutus were reared to maturity in the laboratory in an excess of food at about 5, 8, and 12C. Mean length of adult females was inversely related to temperature, but that of adult males was unaffected. Mean length of females reared in a light‐temperature regime of alternately 12 hr at 8C in weak light and 12 hr at 12C in darkness did not differ significantly from estimated mean length at a constant, intermediate temperature of 10C. These experiments suggest that vertical migration in thermally stratified waters will not enhance length of this species.