Journal of Plankton Research Vol.25 no.3 pp.261-271, 2003
© Oxford University Press 2003
Effect of temperature on development, growth and reproduction in the marine copepod Pseudocalanus newmani at satiating food condition
Graduate School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato-Machi, Hakodate, Hokkaido 041-0821, Japan
* Corresponding Author: ban{at}ses.usp.ac.jp
2 Present Address: Japan Applied Microbiology Research Institute Ltd, 242 Ido Ishiwa-Cho, Higashi Yatsushiro-Gun, Yamanashi 406-0045, Japan
3 Present Address: School of Environmental Science, Department of Ecosystem Studies, University of Shiga Prefecture, 2500 Hassaka-Cho, Hikone, Shiga 522-8533, Japan
Post-embryonic development time, somatic growth, egg production rate, survival and sex ratio for the marine calanoid copepod Pseudocalanus newmani from the Pacific coast off southwestern Hokkaido were determined at five temperatures (3, 6, 10, 15 and 20°C) when a mixed algal diet was provided at satiating food condition (0.36 µg C ml-1) in the laboratory. At temperatures between 3 and 15°C, the development time from hatching to adult female increased exponentially with decreasing temperature, being 23.3, 33.1, 46.7 and 74.6 days at 15, 10, 6 and 3°C, respectively. Males developed into adults 2–5 days earlier than did the females. At the highest temperature of 20°C, both embryonic and post-embryonic development and egg production of P. newmani were suppressed. This inhibitory effect of high temperature is consistent with the vertical distribution range and seasonal abundance cycle of this copepod in the field; it tends to avoid the warm surface layer (>15°C) and scarcely appears in the water column during summer and autumn. Body size of P. newmani was not affected by temperature until C1, but increased with decreasing temperature after C2. The weight-specific growth rate (SGR) increased linearly with temperature (T) until 15°C, which is expressed as SGR = 0.0095T + 0.0462 (r = 0.996). This growth pattern may also indicate high-temperature stress to this copepod, the general pattern of copepod growth being exponential. The weight-specific egg production rate (SER) also increased with temperature (SER = 0.02T + 0.014, r = 0.99), below 15°C. The proportion of male offspring of P. newmani that grew to adulthood was nearly 50% at 3 and 6°C, but decreased with increasing temperature at 10–15°C. This unequal sex ratio may be due to sex change during juvenile development under temperature control. These results suggest that temperature plays an important role in life history traits of P. newmani through not only temperature-dependent growth and reproduction, but also through high-temperature inhibition and temperature-controlled sex ratio under sufficient food supply.
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  H. Liu and R. R. Hopcroft Growth and development of Pseudocalanus spp. in the northern Gulf of Alaska J. Plankton Res., August 1, 2008; 30(8): 923 - 935. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. B. Miller Copepod growth in detail: pattern similarity to decapod larvae ICES J. Mar. Sci., April 1, 2008; 65(3): 332 - 338. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Q. Hu, C. M. Petrik, and C. S. Davis Normal versus gamma: stochastic models of copepod molting rate J. Plankton Res., November 1, 2007; 29(11): 985 - 997. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. B. Cook, A. Bunker, S. Hay, A. G. Hirst, and D. C. Speirs Naupliar development times and survival of the copepods Calanus helgolandicus and Calanus finmarchicus in relation to food and temperature J. Plankton Res., September 1, 2007; 29(9): 757 - 767. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. Jimenez-Melero, G. Parra, S. Souissi, and F. Guerrero Post-embryonic developmental plasticity of Arctodiaptomus salinus (Copepoda: Calanoida) at different temperatures J. Plankton Res., June 1, 2007; 29(6): 553 - 567. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Devreker, S. Souissi, J. Forget-Leray, and F. Leboulenger Effects of salinity and temperature on the post-embryonic development of Eurytemora affinis (Copepoda; Calanoida) from the Seine estuary: a laboratory study J. Plankton Res., March 1, 2007; 29(suppl_1): i117 - i133. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. Jimenez-Melero, B. Santer, and F. Guerrero Embryonic and naupliar development of Eudiaptomus gracilis and Eudiaptomus graciloides at different temperatures: comments on individual variability J. Plankton Res., November 1, 2005; 27(11): 1175 - 1187. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. M. Napp, R. R. Hopcroft, C. T. Baier, and C. Clarke Distribution and species-specific egg production of Pseudocalanus in the Gulf of Alaska J. Plankton Res., May 1, 2005; 27(5): 415 - 426. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. J. Angilletta Jr., T. D. Steury, and M. W. Sears Temperature, Growth Rate, and Body Size in Ectotherms: Fitting Pieces of a Life-History Puzzle Integr. Comp. Biol., December 1, 2004; 44(6): 498 - 509. [Abstract] [Full Text] [PDF]
|
|