Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

A Model of Cadra cautella Larval Growth and Development

D. M. Gordon, W. S. C. Gurney, R. M. Nisbet and R. K. Stewart
Journal of Animal Ecology
Vol. 57, No. 2 (Jun., 1988), pp. 645-657
DOI: 10.2307/4930
Stable URL: http://www.jstor.org/stable/4930
Page Count: 13
  • Read Online (Free)
  • Download ($18.00)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
A Model of Cadra cautella Larval Growth and Development
Preview not available

Abstract

(1) Previous experimental work has shown that in the stored-products moth Cadra cautella, larval survival as well as age and weight at pupation are dependent on the density (larvae g-1 food) at which larvae are reared. (2) A mathematical model was developed to describe larval growth and development. Important features of the model are that: (a) the model considers the growth and development of males and females separately; (b) larval food ingestion rate is inversely related to the amount of larval biomass per unit of food; and (c) larval development indices are a function of larval age and weight. (3) The model provides a good description of total food consumption, larval survival, and larval age and weight at pupation for those larval densities where food exhaustion does not occur. Although the model captures the broad effects, it overestimates the impact of food exhaustion on larval growth and development. Coprophagy and cannibalism, factors not included in the model, account for the model's departures from the observed data when food exhaustion occurs.

Page Thumbnails

  • Thumbnail: Page 
645
    645
  • Thumbnail: Page 
646
    646
  • Thumbnail: Page 
647
    647
  • Thumbnail: Page 
648
    648
  • Thumbnail: Page 
649
    649
  • Thumbnail: Page 
650
    650
  • Thumbnail: Page 
651
    651
  • Thumbnail: Page 
652
    652
  • Thumbnail: Page 
653
    653
  • Thumbnail: Page 
654
    654
  • Thumbnail: Page 
655
    655
  • Thumbnail: Page 
656
    656
  • Thumbnail: Page 
657
    657