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Parental care improves immunity in the seahorse (Hippocampus erectus)

文献类型： 外文期刊

作者： Lin, Tingting 1 ; Zhang, Dong 1 ; Liu, Xin 1 ; Xiao, Dongxue 1 ;

作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Key Lab East China Sea & Ocean Fishery Resources, Minist Agr, Shanghai 200090, Peoples R China

关键词： Seahorse Hippocampus erectus; Parental care; Immune defenses; Mating competition; Sexual dimorphism

期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）

ISSN： 1050-4648

年卷期： 2016 年 58 卷

页码：

收录情况： SCI

摘要： In the present study, the sexual dimorphism in immune response in the seahorse Hippocampus erectus in which males compete for mates and invest heavily in parental care was assessed. Variability in immunocompetence in virginal seahorses with differing levels of sexual maturity (i.e., immaturity, early maturity and maturity) and with different mating statuses (i.e., virginal, experienced mating failure and experienced mating success) were analyzed by evaluating immune parameters in the plasma. Additionally, ultra structural characteristics of the inner epithelium of the brood pouch were compared between males that had experienced mating failure and those that had succeeded. Generally, immunity in sexually mature virgin males was greater than in females, and mating competition significantly reduced males' immunity. However, parental care gave males stronger immune and metabolic abilities and resulted in their immunity significantly rebounding after a successful mating. The present study quantitatively clarifies, for the first time, how parental care and mating competition jointly affect immunity. Moreover, previous findings that females display more efficient immune defenses than males in conventional species (i.e., males are as competitor and females as care giver) and that males' immunity is higher than females' in the pipefish (i.e., females are as competitor and males as care giver) in combination with the present results indicate that parental care is a key factor for sexual dimorphism in immunity. The care-giving sex has strong immunity regardless of the sex in charge of mating competition or not. (C) 2016 Elsevier Ltd. All rights reserved.

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