Beta
15716

Effect of juvenile hormone analogue (Admiral) on embryogenesis of the soft tick Argas persicus (Oken)

Article

Last updated: 03 Jan 2025

Subjects

-

Tags

-

Abstract

Embryonic development of the fowl tick A. persicus was investigated during
cleavage stage, blastoderm formation, gastrulation and organogenesis. Cleavage
started 1 h post-oviposition (POP) and is indicated by presence of vitellophages of
different sizes. Blastoderm is formed at 48 h POP. Secondary vitellophages are
observed by 24 h POP. By 72 h POP, the germ band is formed. At 96 h POP, while
the embryonic envelops are formed, gastrulation of the germ band takes place.
Segmentation and differentiation of germ band, as well as, blastokinesis occur at 120
h POP. The stomodaeal and proctodaeal invagination started to differentiate at 120 h
POP. The anterior and posterior midgut rudiments can be observed at 144 h POP. By
168 h POP, the nervous system, as well as, rectal sac and malpighian tubules are
formed.
Histological study revealed that application of JHA (Admiral) to newly laid
eggs of A. persicus blocked the embryonic development of affected eggs at cleavage
stage and before blastoderm and pole cells formation. In 24 h-old treated eggs, few
cleavage nuclei appeared with absence of secondary vitellophages and pole cells. In
48 h-old treated eggs, the blastoderm was rudimentary and irregularly arranged. In 72
h-old treated eggs, disintegration of the rudimentary blastoderm and cracking of the
cytoplasm could be seen. Starting from 96-old eggs until hatching at 168 h, complete
destruction of the eggs was clear.

DOI

10.21608/eajbsa.2009.15716

Keywords

Argas persicus, Juvenile hormone analogue, embryogenesis

Authors

First Name

Nadia

Last Name

Ahmed

MiddleName

H.

Affiliation

Department of Entomology, Faculty of Science, Ain-Shams University

Email

-

City

-

Orcid

-

First Name

Wafaa

Last Name

Radwan

MiddleName

A.

Affiliation

Department of Entomology, Faculty of Science, Ain-Shams University

Email

-

City

-

Orcid

-

First Name

Noha

Last Name

Guneidy

MiddleName

A.

Affiliation

Department of Entomology, Faculty of Science, Ain-Shams University

Email

-

City

-

Orcid

-

First Name

Shimaa

Last Name

Mohammed

MiddleName

S.

Affiliation

Department of Entomology, Faculty of Science, Ain-Shams University

Email

-

City

-

Orcid

-

Volume

2

Article Issue

1

Related Issue

3320

Issue Date

2009-06-01

Receive Date

2018-10-03

Publish Date

2009-06-01

Page Start

165

Page End

176

Print ISSN

1687-8809

Online ISSN

2090-0813

Link

https://eajbsa.journals.ekb.eg/article_15716.html

Detail API

https://eajbsa.journals.ekb.eg/service?article_code=15716

Order

22

Type

Original Article

Type Code

667

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences. A, Entomology

Publication Link

https://eajbsa.journals.ekb.eg/

MainTitle

Effect of juvenile hormone analogue (Admiral) on embryogenesis of the soft tick Argas persicus (Oken)

Details

Type

Article

Created At

22 Jan 2023