open access

Vol 81, No 1 (2022)
Original article
Submitted: 2020-11-21
Accepted: 2021-01-11
Published online: 2021-01-29
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Effect of seasonal changes on the innate immunity of wild Pseudois nayaur: potential reason for its endangerment

B. Song1, B. Wu12
DOI: 10.5603/FM.a2021.0010
·
Pubmed: 33559112
·
Folia Morphol 2022;81(1):107-116.
Affiliations
  1. Key Laboratory of Southwest China Wildlife Resources Conservation, Ministry of Education, Sichuan, PR China
  2. College of Life Science, China West Normal University, Sichuan, PR China

open access

Vol 81, No 1 (2022)
ORIGINAL ARTICLES
Submitted: 2020-11-21
Accepted: 2021-01-11
Published online: 2021-01-29

Abstract

Background: Seasonal climate change may impose stress on mammal’s immune system, but this has never been connected to wildlife endangerment reasons. This study focuses on Pseudois nayaur, a rare Chinese sheep facing a severe situation of disappearing.
Materials and methods: Wild Pseudois nayaurs in Sichuan, China were observed in this research by an integrated method including habitat environment, foraging rules, and breeding activities investigation in ecology filed, accompanied with immunity research by peripheral blood, including erythrocyte, neutrophils, natural killer cells, and macrophages immunity by means of erythrocyte rosette, phagocytosis, lactate dehydrogenase release and acid alpha-naphthyl acetate esterase method, respectively.
Results: The results show that Pseudois nayaurs’s innate and red blood cell immunity in autumn and winter Pseudois nayaurs and it may be the results of energy reallocation between reproduction and the immune system. In addition, the environment pressure found in Zhu Balong, Sichuan, China including food reduction, human disturbance, low temperature, and severe drought still existed, which may prevent the Pseudois nayaur from normal immunity enhancement before winter.
Conclusions: In conclusion, the innate immunosuppression found in this study especially at their breeding season in autumn and winter may be the ignored cause of wild Pseudois nayaur’s endangerment and should be considered in their protection strategy.

Abstract

Background: Seasonal climate change may impose stress on mammal’s immune system, but this has never been connected to wildlife endangerment reasons. This study focuses on Pseudois nayaur, a rare Chinese sheep facing a severe situation of disappearing.
Materials and methods: Wild Pseudois nayaurs in Sichuan, China were observed in this research by an integrated method including habitat environment, foraging rules, and breeding activities investigation in ecology filed, accompanied with immunity research by peripheral blood, including erythrocyte, neutrophils, natural killer cells, and macrophages immunity by means of erythrocyte rosette, phagocytosis, lactate dehydrogenase release and acid alpha-naphthyl acetate esterase method, respectively.
Results: The results show that Pseudois nayaurs’s innate and red blood cell immunity in autumn and winter Pseudois nayaurs and it may be the results of energy reallocation between reproduction and the immune system. In addition, the environment pressure found in Zhu Balong, Sichuan, China including food reduction, human disturbance, low temperature, and severe drought still existed, which may prevent the Pseudois nayaur from normal immunity enhancement before winter.
Conclusions: In conclusion, the innate immunosuppression found in this study especially at their breeding season in autumn and winter may be the ignored cause of wild Pseudois nayaur’s endangerment and should be considered in their protection strategy.

Get Citation

Keywords

Pseudois nayaur, ecological immunity, immunosuppression, seasonal change, reproductive coercion

About this article
Title

Effect of seasonal changes on the innate immunity of wild Pseudois nayaur: potential reason for its endangerment

Journal

Folia Morphologica

Issue

Vol 81, No 1 (2022)

Article type

Original article

Pages

107-116

Published online

2021-01-29

Page views

1843

Article views/downloads

597

DOI

10.5603/FM.a2021.0010

Pubmed

33559112

Bibliographic record

Folia Morphol 2022;81(1):107-116.

Keywords

Pseudois nayaur
ecological immunity
immunosuppression
seasonal change
reproductive coercion

Authors

B. Song
B. Wu

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