Host social behavior and parasitic infection: a multifactorial approach
Host social behavior and parasitic infection: a multifactorial approach
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DOI：
10.1093/beheco/arh028
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发表时间：
2004-05-01
影响因子：
2.4
通讯作者：
Ezenwa, VO
中科院分区：
文献类型：
--
作者：
Ezenwa, VO
我研究了宿主社会组织的几个组成部分之间的联系，包括群体大小和聚集性、群体稳定性、领地和社会阶层，以及非洲牛的胃肠道寄生虫载量。在种内水平上，种群大小与寄生虫流行率呈正相关，但仅当寄生虫是相对寄主专一性的，且仅存在于生活在稳定种群中的寄主物种之间。社会阶层也是感染率的重要预测因素。在瞪羚中，领地雄性的寄生虫密度高于单身雄性或雌性和青少年，这表明领地高的个体可能更容易接触到寄生虫或更容易受到寄生虫的影响。在不同的分类群中，也发现了属地、归类和寄生之间的联系。地域性寄主比非地域性寄主更易感染线虫，群居寄主比单独寄主感染更多。分析还表明，聚集性和地域性对个体寄生虫丰富度有交互作用，具有这两个特征的宿主比只有一个特征或没有一个特征的宿主拥有更多的寄生虫群。总体而言，研究结果表明，宿主社会行为的多种特征影响感染风险，并表明特征之间的协同作用也对宿主寄生虫载量有重要影响。
I examined associations between several components of host social organization, including group size and gregariousness, group stability, territoriality and social class, and gastrointestinal parasite load in African bovids. At an intraspecific level, group size was positively correlated with parasite prevalence, but only when the parasite was relatively host specific and only among host species living in stable groups. Social class was also an important predictor of infection rates. Among gazelles, territorial males had higher parasite intensities than did either bachelor males or females and juveniles, suggesting that highly territorial individuals may be either more exposed or more susceptible to parasites. Associations among territoriality, grouping, and parasitism were also found across taxa. Territorial host genera were more likely to be infected with strongyle nematodes than were nonterritorial hosts, and gregarious hosts were more infected than were solitary hosts. Analyses also revealed that gregariousness and territoriality had an interactive effect on individual parasite richness, whereby hosts with both traits harbored significantly more parasite groups than did hosts with only one or neither trait. Overall, study results indicate that multiple features of host social behavior influence infection risk and suggest that synergism between traits also has important effects on host parasite load.