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 104538
Title Studies on the physiology of phase induction in Locusta migratoria migratorioides R. & F.
show extra info.
door G.B. Staal
Author(s) Staal, G.B.
Publisher Wageningen : Veenman
Publication year 1961
Description 126 p
Series title Publicatie / Stichting Fonds Landbouw Export Bureau 1916/1918 (40)
Series title Mededeling / Laboratorium voor Entomologie (72)
Notes Proefschrift Wageningen
Tutors Wilde, Prof. Dr. J. de
Graduation date 1961-12-08
Dissertation no. 319
Author abstract show abstract
External conditions such as lack of food and the consequent population density control the swarming of the migratory locust. The transformation is of metabolism and larval development as well as of behaviour. The proportions of body parts and the pigmentation change. As insect development is regulated by juvenile hormone and moulting hormone, there was also the possibility that they were involved in phase polymorphism.

The possibility of endocrine control was studied in some types of migratory locust by removing or implanting glands, by cutting nerves and by rearing under different conditions. For the surgical studies a technique was developed for routine operations on large numbers of second-instar larvae and for rapidly measuring the volume of endocrine glands. The green pigmentation of the solitary and the yellow of the gregarious imago was controlled by the juvenile hormone. Body proportions were also thus controlled independent of metamorphic regulation. Moulting hormone had a spectacular effect on development, moulting and body proportions. The studies may be of use in locust control with insect hormones.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08200,319
FORUM ; STACKS ; NN08202,319
FORUM ; STACKS ; NN00656,40
FORUM ; STACKS ; NN35154,072
Keyword(s) (cab) acrididae / locusts / insects / plant pests / hormones / endocrinology / polymorphism
Categories Orthoptera / Agricultural Entomology
Publication type PhD thesis
Language English
About cum laude graduation (with distinction)
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