Influence of food density on respiration rate of two crustacean plankters, Daphnia galeata and Bosmina longirostris

Jotaro Urabe, Yasunori Watanabe

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


The influence of food density on respiration rate was measured for two cladoceran plankton species, Daphnia galeata and Bosmina longirostris, over the range 0 to 2.5 mg C 1-1, using the modified Winkler technique in order to examine how this affects the respiration rate and whether the functional response is the same in the two species. The respiration rate for animals of equivalent body size did not differ significantly between the two species in the absence of food, but was significantly lower in Bosmina longirostris than Daphnia galeata at high food density. Within a species, the response of respiration rate to changing food density did not differ among individuals of different body size. The respiration rate of D. galeata increased with increasing food density and reached a plateau at a high food density. A similar response curve was also found with the respiration rate of B. longirostris, although the response was less conspicuous. This response curve cannot be explained by the energy cost of known feeding behavior in cladocerans. Since the respiration rate related linearly with the assimilation rate, increase in food density seemed to increase the respiration rate by increasing the energetic cost required to process food biochemically, known as specific dynamic action.

Original languageEnglish
Pages (from-to)362-368
Number of pages7
Issue number3
Publication statusPublished - 1990 Mar 1
Externally publishedYes


  • Bosmina
  • Daphnia
  • Food concentration
  • Respiration rate
  • Specific dynamic action

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics


Dive into the research topics of 'Influence of food density on respiration rate of two crustacean plankters, Daphnia galeata and Bosmina longirostris'. Together they form a unique fingerprint.

Cite this