Asociación del parasitismo por Profilicollis bullocki (Paleacanthocephala, Polymorphidae) con la conducta y la pigmentación de Emerita analoga (Anomura, Hippidae) en Chile

Jerez, Rodolfo; George-Nascimento, Mario

doi:10.4067/s0718-19572010000300018

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…Acanthocephalan species are non-lethal parasites, but they can alter host’s behaviour and increase their susceptibility to predation ( Latham & Poulin, 2002a ; Latham & Poulin, 2002b ; Beisel & Medoc, 2010 ). For example, molecrab’ burrowing velocity is negatively correlated with parasite burden ( Jerez & George-Nascimento, 2010 ). In addition, egg mortality during dispersion could also have led to the non-significant relationship between bird density (i.e., exposure to parasite infection) and the comparatively low levels of aggregation observed in this study.…”

Section: Discussionmentioning

confidence: 99%

Mesoscale spatiotemporal variability in a complex host-parasite system influenced by intermediate host body size

Rodrı́guez

Valdivia

2017

PeerJ

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BackgroundParasites are essential components of natural communities, but the factors that generate skewed distributions of parasite occurrences and abundances across host populations are not well understood.MethodsHere, we analyse at a seascape scale the spatiotemporal relationships of parasite exposure and host body-size with the proportion of infected hosts (i.e., prevalence) and aggregation of parasite burden across ca. 150 km of the coast and over 22 months. We predicted that the effects of parasite exposure on prevalence and aggregation are dependent on host body-sizes. We used an indirect host-parasite interaction in which migratory seagulls, sandy-shore molecrabs, and an acanthocephalan worm constitute the definitive hosts, intermediate hosts, and endoparasite, respectively. In such complex systems, increments in the abundance of definitive hosts imply increments in intermediate hosts’ exposure to the parasite’s dispersive stages.ResultsLinear mixed-effects models showed a significant, albeit highly variable, positive relationship between seagull density and prevalence. This relationship was stronger for small (cephalothorax length >15 mm) than large molecrabs (<15 mm). Independently of seagull density, large molecrabs carried significantly more parasites than small molecrabs. The analysis of the variance-to-mean ratio of per capita parasite burden showed no relationship between seagull density and mean parasite aggregation across host populations. However, the amount of unexplained variability in aggregation was strikingly higher in larger than smaller intermediate hosts. This unexplained variability was driven by a decrease in the mean-variance scaling in heavily infected large molecrabs.ConclusionsThese results show complex interdependencies between extrinsic and intrinsic population attributes on the structure of host-parasite interactions. We suggest that parasite accumulation—a characteristic of indirect host-parasite interactions—and subsequent increasing mortality rates over ontogeny underpin size-dependent host-parasite dynamics.

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Section: Discussionmentioning

confidence: 99%

Mesoscale spatiotemporal variability in a complex host-parasite system influenced by intermediate host body size

Rodrı́guez

Valdivia

2017

PeerJ

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Acanthocephalan Profilicollis altmani infecting the mole crab Emerita brasiliensis in southeastern Brazil

Cabrini,

Machado,

Neves

et al. 2024

Journal of Invertebrate Pathology

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Decreased Metabolic Rate in the Mole Crabs, Emerita analoga, Infected with the Acanthocephalan Profilicollis altmani

Figueroa

Urbina

Riedemann

et al. 2019

Journal of Parasitology

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Asociación del parasitismo por Profilicollis bullocki (Paleacanthocephala, Polymorphidae) con la conducta y la pigmentación de Emerita analoga (Anomura, Hippidae) en Chile

Abstract: Asociación del parasitismo por Profilicollis bullocki(Paleacanthocephala, Polymorphidae) con la conducta y la pigmentación de Emerita analoga (Anomura, Hippidae) en Chile

Cited by 4 publications

References 22 publications

Mesoscale spatiotemporal variability in a complex host-parasite system influenced by intermediate host body size

Mesoscale spatiotemporal variability in a complex host-parasite system influenced by intermediate host body size

Acanthocephalan Profilicollis altmani infecting the mole crab Emerita brasiliensis in southeastern Brazil

Decreased Metabolic Rate in the Mole Crabs, Emerita analoga, Infected with the Acanthocephalan Profilicollis altmani

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