ONLY a fraction of the plant food captured by zooplankton is converted into growth ; the rest is lost through incomplete assimilation, excretion and metabolism. The net growth efficiencies, K2 (percentage of assimilated food converted into growth) for haloplanktonic animals such as Calanus and related copepod species are generally lower than the percentage of assimilated food lost in metabolism (100-K2. In terms of calories, values of K2 quoted in a recent review by Corner and Davies1 range from 23–58 for C. hyperboreus, from 6–55 for C. helgolandicus, and from 14–29 for Acartia clausi. There are few comparable estimates of growth efficiencies for meroplankton species, such as molluscan larvae, but the data that does exist suggests that the values of K2 are considerably higher than those for copepods. Jørgensen calculated a value for K2 of 73% for Mytilus larvae and values of 62% and 63% for two gastropod veligers2, and from short-term feeding experiments with Ostrea edulis Walne estimated that 68–80% of the total food assimilated by the larvae is utilized for growth3. During larval development the daily level of assimilated food declined from 56% to 29% of the body weight.
Access optionsAccess options
Subscribe to Journal
Get full journal access for 1 year
only $3.90 per issue
All prices are NET prices.
VAT will be added later in the checkout.
Rent or Buy article
Get time limited or full article access on ReadCube.
All prices are NET prices.
Corner, E. D. S., and Davies, A. G., Adv. Mar. Biol., 9, 101 (1971).
Jørgensen, C. B., Nature, 170, 714 (1952).
Walne, P. R., Fish. Invest., Ser. 2, 24, No.1 (1965).
Holland, D. L., and Spencer, B. E., J. Mar. Biol. Ass. UK (in the press).
Holland, D. L., and Gabbott, P. A., J. Mar. Biol. Ass. UK, 51, 659 (1971).
Millar, R. H., and Scott, J. M., J. Mar. Biol. Ass. UK, 47, 475 (1967).
Walne, P. R., Fish. Invest., Ser. 2, 25, No. 4 (1966).
Zeuthen, E., C.r. Lab. Carlsberg (Chim.), 26, 17 (1947).
Corner, E. D. S., Cowey, C. B., and Marshall, S. M., J. Mar. Biol. Ass. UK, 47, 259 (1967).
About this article
Larval growth, development, and survival of laboratory-reared Aplysia californica: Effects of diet and veliger density
Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology (2009)
Physiological bases of genetically determined variation in growth of marine invertebrate larvae: A study of growth heterosis in the bivalve Crassostrea gigas
Journal of Experimental Marine Biology and Ecology (2006)
The physiology of the larva of the Chilean oyster Ostrea chilensis and the utilisation of biochemical energy reserves during development: An extreme case of the brooding habit
Journal of Sea Research (2006)
Application of a micro-respirometric volumetric method to respiratory measurements of larvae of the Pacific oysterCrassostrea gigas
Aquatic Living Resources (2004)
A biochemical study of the larval and postlarval stages of the Chilean scallop Argopecten purpuratus