Complex effects of testosterone level on ectoparasite load in a ground squirrel: an experimental test for the immunocompetence handicap hypothesis
文献类型: 外文期刊
作者: Li Qing Wang;Zhi Tao Liu;Jian Jun Wang;Yu Han Fang;Hao Zhu;Ke Shi;Fu Shun Zhang;Ling Ying Shuai
作者机构:
关键词: Immunocompetence handicap;Parasite;Rodent;Sex;Testosterone;Tick
期刊名称: Parasites and Vectors
ISSN: 1756-3305
年卷期: 2024 年 17 卷 1 期
页码:
收录情况: SCIE(2024版)
摘要: Background: The immunocompetence handicap hypothesis suggests that males with a higher testosterone level should be better at developing male secondary traits, but at a cost of suppressed immune performance. As a result, we should expect that males with an increased testosterone level also possess a higher parasite load. However, previous empirical studies aimed to test this prediction have generated mixed results. Meanwhile, the effect of testosterone level on parasite load in female hosts remains poorly known. Methods: In this study, we tested this prediction by manipulating testosterone level in Daurian ground squirrels (Spermophilus dauricus), a medium-sized rodent widely distributed in northeast Asia. S. dauricus is an important host of ticks and fleas and often viewed as a considerable reservoir of plague. Live-trapped S. dauricus were injected with either tea oil (control group) or testosterone (treatment group) and then released. A total of 10 days later, the rodents were recaptured and checked for ectoparasites. Fecal samples were also collected to measure testosterone level of each individual. Results: We found that testosterone manipulation and sex of hosts interacted to affect tick load. At the end of the experiment, male squirrels subjected to testosterone implantation had an averagely higher tick load than males from the control group. However, this pattern was not found in females. Moreover, testosterone manipulation did not significantly affect flea load in S. dauricus. Conclusions: Our results only lent limited support for the immunocompetence handicap hypothesis, suggesting that the role of testosterone on regulating parasite load is relatively complex, and may largely depend on parasite type and gender of hosts. Graphical Abstract: (Figure presented.)
分类号:
- 相关文献
作者其他论文 更多>>
-
A randomized double-blind clinical trial: Comparison of oclacitinib with a traditional Chinese herbal medicine product (Dihuang Guiqin capsule) in the treatment of canine atopic dermatitis
作者:Jun Jie Qin;Hao Zhu;Zhe Wen Song;Xiao Jiao Hou;Xiu Min Wang;Lei Wang;Jian Xi Li
关键词:Canine atopic dermatitis;Oclacitinib;Recommended dosage;Therapeutic effect;Traditional Chinese herbal medicine
-
Source, Extraction, Properties, and Multifunctional Applications of Pectin: A Short Review
作者:Le Yi;Lifeng Cheng;Qi Yang;Ke Shi;Fengbo Han;Wei Luo;Shengwen Duan
关键词:extraction method;pectin;physical and chemical properties;physiological function;structural characteristics
-
Efficient and sustainable preparation of cinnamic acid flavor esters by immobilized lipase microarray
作者:Jinhang Chen;;Yi Zhang;;Huaying Zhong;;Hao Zhu;;Hongxun Wang ;;Kheng-Lim Goh ;;Juntao Zhang ;;Mingming Zheng
关键词:
-
Preparation and investigation of novel endopeptidase-exopeptidase co-immobilized nanoflowers with improved cascade hydrolysis
作者:Hao Zhu;Jinhang Chen;Yi Zhang;Kheng Lim Goh;Chuyun Wan;Dongyun Zheng;Mingming Zheng
关键词:Cascade reaction;Catalytic stability;Hybrid nanoflowers;Protease immobilization;Reusability
-
Arbuscular mycorrhiza changes plant facilitation patterns and increases resource use efficiency in intercropped annual plants
作者:Shuang Guo Zhu;Hai Xia Duan;Hong Yan Tao;Li Zhu;Rui Zhou;Yu Miao Yang;Xiao Lin Zhang;Wen Ying Wang;Hao Zhu;Wei Zhang;Ren Qing Wang;Xiu Ping Tao;You Cai Xiong
关键词:AMF;Intercropping;Phosphorus;Plant–plant interaction;Soil moisture
-
Combined effects of light pollution and vegetation height on behavior and body weight in a nocturnal rodent
作者:Ling Ying Shuai;Li Qing Wang;Yang Xia;Jin Yu Xia;Kang Hong;Ya Nan Wu;Xin Yi Tian;Fu Shun Zhang
关键词:Artificial light at night;Forage;Giving-up density;Rodent;Vegetation structure;Vigilance
-
Telomere length, oxidative stress and their links with growth and survival in a lizard facing climate warming
作者:Qiong Zhang;Xing Zhi Han;Pablo Burraco;Xin Hao;Li Wei Teng;Zhen Sheng Liu;Fu Shun Zhang;Wei Guo Du
关键词:Antioxidant capacity;Climate warming;Lizard;Survival;Telomere dynamics