Library Catalogue

Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104513
Title Voltinism and its determination in some beetles of cruciferous crops
show extra info.
door G.W. Ankersmit
Author(s) Ankersmit, G.W.
Publisher Wageningen : Veenman
Publication year 1964
Description 60 p ill
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
Tutors Wilde, Prof. Dr. J. de
Graduation date 1964-06-26
Dissertation no. 369
Author abstract show abstract
The influence of some token stimuli (photoperiod, temperature and food) on the annual cycle of univoltine insects ( Ceuthorrhynchus assimilis Payk., C. pleurostigma Marsh., spring and autumn races, and Psylliodes chrysocephala L.) was studied. The reproductive diapause of C. assimilis and the spring race of C. pleurostigma was not affected by the photoperiods studied. In the autumn race of C. pleurostigma and P. chrysocephala , the summer diapause was induced by long days and oviposition in the autumn by short days. The different responses to photoperiod in the 2 races of C. pleurostigma , races which were not geographically isolated, were sufficient to cause their reproductive isolation and so their maintenance. Both races were well synchronized with the annual cycles of their host plants.
Online full textINTERNET
On paper FORUM ; STACKS ; NN08200,369
FORUM ; STACKS ; NN08202,369
Keyword(s) (cab) plant diseases / plant pests / plant protection / plant pathology / plant disorders / brassica napus var. oleifera / rape / cabbages / insects / entomology / zoology / embryology / ontogeny
Categories Agricultural Entomology
Publication type PhD thesis
Language English
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