The Open Ornithology Journal




(Discontinued)

ISSN: 1874-4532 ― Volume 13, 2020
RESEARCH ARTICLE

Age-related Changes in the Response of Embryonic Motility to Acute Hypoxia During the Third Quarter of Chick Embryogenesis



Marina V. Nechaeva1, 2, *, Tatyana A. Alekseeva1
1 Laboratory of Evolutionary Developmental Biology, Institute of Developmental Biology RAS, Moscow, Russia
2 Laboratory for Neuroregulation of Muscle Function, Institute of Evolutionary Physiology and Biochemistry RAS, Saint-Petersburg, Russia

Abstract

Environmental factors may affect the growth, size, phenotype, behavior, and other characteristics of avian embryos at different developmental stages; however, the roles of individual embryonic physiological systems in these effects remain largely unclear. Embryonic motility is an important component of the prenatal development observed almost throughout embryogenesis and may be a precursor of post-hatching motor behavior. The influences of the environment on the development of motor behavior during embryogenesis (notably the embryonic motility affected by hypoxia) remain poorly studied. Consequently, using the chick embryo, we investigated the effect of acute hypoxia (10% or 5% О2 for 20 or 40 min) on embryonic cyclic motility at incubation days (D) 10, 12, 14, and 15 using in vivo video recording. Hypoxia inhibited motility; specifically, the average duration of activity and inactivity phases during hypoxic exposure were shortened and prolonged, respectively. Age-related changes in the responses to 10% and 5% O2 differed. The time course of the motility response to acute hypoxia varied during the D10-15 period and demonstrates that the embryo was capable of recovering motility under hypoxia. The recovery was likely enhanced with age due to maturation of regulatory capacity.

Keywords: Chick embryo, Embryonic motility, Acute hypoxia, Embryogenesis.

Article Information


Identifiers and Pagination:

Year: 2017
Volume: 10
First Page: 10
Last Page: 22
Publisher Id: TOOENIJ-10-10
DOI: 10.2174/1874453201710010010

Article History:

Received Date: 29/09/2016
Revision Received Date: 06/12/2016
Acceptance Date: 17/12/2016
Electronic publication date: 31/01/2017
Collection year: 2017

© Nechaeva and Alekseeva; Licensee Bentham Open

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.


* Address correspondence to this author at the Institute of Developmental Biology RAS, Vavilov Str. 26, Moscow 119334, Russia; Tel: 7(499) 135-63-27; Fax: 7(499) 135-80-12; E-mail: Mnechaeva2003@yahoo.com


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