Studies on the physiology of phase induction in Locusta migratoria migratorioides R. & F.

G.B. Staal

Research output: Thesisinternal PhD, WU

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.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Wageningen University
Supervisors/Advisors
  • de Wilde, J., Promotor, External person
Award date8 Dec 1961
Place of PublicationWageningen
Publisher
Publication statusPublished - 1961

Fingerprint

Locusta migratoria migratorioides
locusts
physiology
ecdysteroids
juvenile hormones
pigmentation
endocrine glands
insect hormones
insect development
swarming
imagos
polymorphism
larval development
molting
nerve tissue
population density
rearing
instars
metabolism
larvae

Keywords

  • acrididae
  • locusts
  • insects
  • plant pests
  • hormones
  • endocrinology
  • polymorphism
  • cum laude

Cite this

@phdthesis{840c99b6b9564c5bb29a80f4e3fb16e6,
title = "Studies on the physiology of phase induction in Locusta migratoria migratorioides R. & F.",
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.",
keywords = "acrididae, sprinkhanen, insecten, plantenplagen, hormonen, endocrinologie, polymorfisme, acrididae, locusts, insects, plant pests, hormones, endocrinology, polymorphism, cum laude",
author = "G.B. Staal",
note = "WU thesis 319 Proefschrift Wageningen",
year = "1961",
language = "English",
publisher = "Veenman",
school = "Wageningen University",

}

Staal, GB 1961, 'Studies on the physiology of phase induction in Locusta migratoria migratorioides R. & F.', Doctor of Philosophy, Wageningen University, Wageningen.

Studies on the physiology of phase induction in Locusta migratoria migratorioides R. & F. / Staal, G.B.

Wageningen : Veenman, 1961. 126 p.

Research output: Thesisinternal PhD, WU

TY - THES

T1 - Studies on the physiology of phase induction in Locusta migratoria migratorioides R. & F.

AU - Staal, G.B.

N1 - WU thesis 319 Proefschrift Wageningen

PY - 1961

Y1 - 1961

N2 - 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.

AB - 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.

KW - acrididae

KW - sprinkhanen

KW - insecten

KW - plantenplagen

KW - hormonen

KW - endocrinologie

KW - polymorfisme

KW - acrididae

KW - locusts

KW - insects

KW - plant pests

KW - hormones

KW - endocrinology

KW - polymorphism

KW - cum laude

M3 - internal PhD, WU

PB - Veenman

CY - Wageningen

ER -