Evidence of social communities in a spatially structured network of a free-ranging shark species

Mourier, Johann; Vercelloni, Julie; Planes, Serge

doi:10.1016/j.anbehav.2011.11.008

Cited by 169 publications

(206 citation statements)

References 71 publications

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“…Such modular structure is widespread across social networks in wildlife species, including relatively solitary species (4,5), and can emerge from a combination of social behavior, demography, environmental, and landscape factors. However, theoretical investigations of the impact of modularity on spreading processes have produced mixed results in the past.…”

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confidence: 99%

Unraveling the disease consequences and mechanisms of modular structure in animal social networks

Sah

Leu

Cross

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

162

230

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Disease risk is a potential cost of group living. Although modular organization is thought to reduce this cost in animal societies, empirical evidence toward this hypothesis has been conflicting. We analyzed empirical social networks from 43 animal species to motivate our study of the epidemiological consequences of modular structure in animal societies. From these empirical studies, we identified the features of interaction patterns associated with network modularity and developed a theoretical network model to investigate when and how subdivisions in social networks influence disease dynamics. Contrary to prior work, we found that disease risk is largely unaffected by modular structure, although social networks beyond a modular threshold experience smaller disease burden and longer disease duration. Our results illustrate that the lowering of disease burden in highly modular social networks is driven by two mechanisms of modular organization: network fragmentation and subgroup cohesion. Highly fragmented social networks with cohesive subgroups are able to structurally trap infections within a few subgroups and also cause a structural delay to the spread of disease outbreaks. Finally, we show that network models incorporating modular structure are necessary only when prior knowledge suggests that interactions within the population are highly subdivided. Otherwise, null networks based on basic knowledge about group size and local contact heterogeneity may be sufficient when data-limited estimates of epidemic consequences are necessary. Overall, our work does not support the hypothesis that modular structure universally mitigates the disease impact of group living. modularity | sociality | community structure | wildlife disease | infection

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mentioning

confidence: 99%

Unraveling the disease consequences and mechanisms of modular structure in animal social networks

Sah

Leu

Cross

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

162

230

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“…There is increasing evidence showing that decoding the structure of such a social network is an effective approach for unravelling the underlying processes organizing an animal society (e.g. Lusseau 2003;Croft et al 2008;Foster et al 2012;Mourier et al 2012;Daura-Jorge et al 2012).…”

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confidence: 99%

“…For instance, animals can be brought together by several common biological factors, such as sex, age (Lusseau & Newman 2004;Mourier et al 2012), kinship (e.g. Frère et al 2010;Wiszniewski et al 2010), foraging specializations (e.g.…”

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confidence: 99%

Disentangling social networks from spatiotemporal dynamics: the temporal structure of a dolphin society

et al. 2012

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“…This conspicuous fish aggregation away from the safety of their reef habitat most likely attracted individual sharks that are normally widely distributed across the reef (Mourier et al 2012). Blacktip reef sharks have been shown to form social groups, but the size of the present aggregation is unusual, suggesting a significant and important reason underlying their congregation.…”

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confidence: 99%

A massive surgeonfish aggregation creates a unique opportunity for reef sharks

2015

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Evidence of social communities in a spatially structured network of a free-ranging shark species

Cited by 169 publications

References 71 publications

Unraveling the disease consequences and mechanisms of modular structure in animal social networks

Unraveling the disease consequences and mechanisms of modular structure in animal social networks

Disentangling social networks from spatiotemporal dynamics: the temporal structure of a dolphin society

A massive surgeonfish aggregation creates a unique opportunity for reef sharks

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