Parasitism is always costly to the host

Nan Lyu; Wei Liang

doi:10.24272/j.issn.2095-8137.2020.332

Volume 42 Issue 2

Mar. 2021

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Nan Lyu, Wei Liang. Parasitism is always costly to the host. Zoological Research, 2021, 42(2): 217-220. doi: 10.24272/j.issn.2095-8137.2020.332

Citation:

Nan Lyu, Wei Liang. Parasitism is always costly to the host. Zoological Research, 2021, 42(2): 217-220. doi: 10.24272/j.issn.2095-8137.2020.332

Nan Lyu, Wei Liang. Parasitism is always costly to the host. Zoological Research, 2021, 42(2): 217-220. doi: 10.24272/j.issn.2095-8137.2020.332

Citation:

Nan Lyu, Wei Liang. Parasitism is always costly to the host. Zoological Research, 2021, 42(2): 217-220. doi: 10.24272/j.issn.2095-8137.2020.332

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Parasitism is always costly to the host

doi: 10.24272/j.issn.2095-8137.2020.332

Nan Lyu¹,
Wei Liang^{2
,
,}

1.
Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing 100875, China
2.
Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, Hainan 571158, China

Funds: This work was supported by the National Natural Science Foundation of China (31672298 to N.L., 31772453 and 31970427 to W.L.)

More Information

Corresponding author: E-mail: liangwei@hainnu.edu.cn
Received Date: 2020-11-16
Accepted Date: 2021-01-05

Available Online: 2021-01-25

Publish Date: 2021-03-18

Abstract

Abstract

Recent studies have examined the cost of raising parasitic cuckoos and highlighted the importance of “no extra cost” in explaining the low levels of defense in hosts. To clarify the reasons for parasitization in typical hosts, we present a simple model to explore the immediate and future costs of parasitism in shaping the evolution of defense behavior in hosts. Our results suggest that any cost of parasitization is maladaptive to the host and learned egg recognition is always favored to overcome these costs. Furthermore, although facing a potential cost of mis-imprinting, learned nestling recognition may still evolve when there is a non-zero immediate cost from raising a parasitic nestling. Therefore, we contend that “no extra cost” does not provide sufficient evidence to explain the low levels of defense behavior in hosts per se.
- Cost of parasitism,
- Egg recognition,
- Nestling discrimination,
- Mis-imprinting,
- Evolutionary game model

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References(17)

References

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