caa a22 4500 386361290 CHVBK 20180307111916.0 cr unu---uuuuu 161130e198903 xx s 000 0 eng 10.4039/Ent121291-3 doi S0008347X00028704 pii (NATIONALLICENCE)cambridge-10.4039/Ent121291-3 ESTIMATING STAGE SURVIVAL FROM RECRUITMENT AND DENSITY DATA, WITH REFERENCE TO EGG MORTALITY IN THE COLORADO POTATO BEETLE, LEPTINOTARSA DECEMLINEATA (SAY) (COLEOPTERA: CHRYSOMELDIAE) [Elektronische Daten] Stage survival is typically calculated from estimates of numbers entering two successive life stages. We present a method that estimates stage survival by reference to the difference between directly measured recruitment to the stage and the estimate of recruitment obtained from Southwood and Jepson's graphical technique. The method assumes mortality is constant within the stage. The method is applied to two generations (at two sites) of the egg stage of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), and the predicted stage survivals are compared, for two generations, with direct field measurements of egg mortality. Copyright © Entomological Society of Canada 1989 Van Driesche R.G. Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003 Bellows T.S. Department of Entomology, University of California, Riverside, California, USA 92521 Ferro D.N. Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003 Hazzard R. Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003 Maher A. Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003 The Canadian Entomologist Cambridge University Press 121/3(1989-03), 291-300 0008-347X 121:3<291 1989 121 TCE https://doi.org/10.4039/Ent121291-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent121291-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Van Driesche R.G. Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003 NATIONALLICENCE 700 1- Bellows T.S. Department of Entomology, University of California, Riverside, California, USA 92521 NATIONALLICENCE 700 1- Ferro D.N. Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003 NATIONALLICENCE 700 1- Hazzard R. Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003 NATIONALLICENCE 700 1- Maher A. Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 121/3(1989-03), 291-300 0008-347X 121:3<291 1989 121 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge