The Roles of Ecological and Evolutionary Influences in Providing Structure to Parasite Species Assemblages

Janovy, John; Clopton, Richard E.; Percival, T. J.

doi:10.2307/3283537

Cited by 59 publications

(31 citation statements)

References 34 publications

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“…In eukaryotic models of colonization via a competitive lottery, functional groupings (or "guilds") often reflect taxonomic groupings (15,(73)(74)(75)(76). Alternatively, there may be taxonomic redundancy, in which any given function is distributed broadly across a variety of taxa as opposed to being associated with any particular taxonomic group.…”

Section: Resultsmentioning

confidence: 99%

Bacterial community assembly based on functional genes rather than species

Burke¹,

Steinberg

Rusch

et al. 2011

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

685

586

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The principles underlying the assembly and structure of complex microbial communities are an issue of long-standing concern to the field of microbial ecology. We previously analyzed the community membership of bacterial communities associated with the green macroalga Ulva australis, and proposed a competitive lottery model for colonization of the algal surface in an attempt to explain the surprising lack of similarity in species composition across different algal samples. Here we extend the previous study by investigating the link between community structure and function in these communities, using metagenomic sequence analysis. Despite the high phylogenetic variability in microbial species composition on different U. australis (only 15% similarity between samples), similarity in functional composition was high (70%), and a core of functional genes present across all algal-associated communities was identified that were consistent with the ecology of surface-and hostassociated bacteria. These functions were distributed widely across a variety of taxa or phylogenetic groups. This observation of similarity in habitat (niche) use with respect to functional genes, but not species, together with the relative ease with which bacteria share genetic material, suggests that the key level at which to address the assembly and structure of bacterial communities may not be "species" (by means of rRNA taxonomy), but rather the more functional level of genes.lateral gene transfer | biofilm | ecological model M etagenomic analysis of environmental microbial communities has revealed an enormous and previously unknown microbial diversity, and expanded our knowledge of their function in a variety of environments (1-5). Much still remains unknown, however, such as the principles underlying the assembly and structure of complex microbial communities, an issue of long-standing concern to the field of microbial ecology. To this aim, several recent studies have supported the "neutral hypothesis" (6-8), a largely stochastic model for community assembly, which assumes that species are ecologically equivalent and that community structure is determined by random processes (9, 10). However, there is also evidence that niche or deterministic processes play a role in community structure (11, 12); thus, both niche and neutral processes are likely to affect the assembly of complex microbial communities.Support for these models is based on species abundance distributions, and critical functional aspects, such as the assumption of ecological equivalence, have for the most part not been tested. In this study, we examine the encoded functions of an algalassociated bacterial community and link patterns of function to patterns of community assembly. Following the results of an earlier study (13), we investigate these communities in the context of the lottery hypothesis, a model for community "assembly" derived from studies of eukaryotic communities, such as coral reef fish (14). This hypothesis incorporates both neutral and functional aspects and arg...

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Section: Resultsmentioning

confidence: 99%

Bacterial community assembly based on functional genes rather than species

Burke¹,

Steinberg

Rusch

et al. 2011

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

685

586

View full text Add to dashboard Cite

show abstract

“…It is clear that ecology influences the characteristics of the parasite community of a given host in addition to host phylogeny but in different ways (Morand et al 2002). Janovy et al (1992), for instance, demonstrated that ecological variables have a strong influence on parasite population structure (i.e., quantitative characteristics such as prevalence, abundance and intensity), whereas the evolutionary history of the host species should only affect the evolutionary processes of their parasites.…”

Section: Introductionmentioning

confidence: 99%

Metazoan parasites of deep-sea fishes from the South Eastern Pacific: Exploring the role of ecology and host phylogeny

Ñacari

Oliva

2016

Deep Sea Research Part I: Oceanographic Research Papers

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“…These studies demonstrated that the parasite community structure depended on many different factors, including both host and parasite life histories (i.e., coevolution) (Janovy et al 1992, Brooks et al 2006, the host's characteristic habitat, and host feeding preferences (McAlpine and Burt 1998, Muzzall 1991, Muzzall et al 2001, Bolek and Coggins 2003, Zelmer et al 2004. In addition, host species, body size and sex (Tucker and Joy 1996;McAlpine 1997;Joy and Pennington 1998;Bolek and Coggins 2001;Goldberg and Bursey 2002;Goldberg et al 2002a, b) are important factors in the intricate inter-relationships between parasites and their host in addition to the colonization probabilities of parasites.…”

Section: Introductionmentioning

confidence: 99%

Helminth community structure of the oven frog Leptodactylus latinasus (Anura, Leptodactylidae) from Corrientes, Argentina

Hamann¹,

González²,

Kehr³

2006

Acta Parasitologica

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A total of 36 adult individuals of Leptodactylus latinasus were collected near the city of Corrientes, Province of Corrientes in Argentina. The main goals of this study were: (1) to determine the helminth parasite fauna of L. latinasus; (2) to determine the richness and diversity of parasites at the component and infracommunity levels; (3) to analyze the relationships between helminth, frog body size and sex; and (4) to identify and examine species affinity of helminth communities. The helminth component community of this frog's population consisted of 17 species. The predominant groups of parasites were the trematodes (adults: Glypthelmins repandum, Catadiscus inopinatus and Haematoloechus longiplexus; larvae: Travtrema aff. stenocotyle, Bursotrema aff. tetracotyloides, Styphlodora sp., unknown opisthogonimid species, Petasiger sp. and unknown strigeid species), followed by the nematodes (Cosmocerca podicipinus, C. parva, C. rara, C. cruzi, Schrankiana schranki and Aplectana hylambatis); other groups of parasites were represented by only one species (unknown larval cestode species and Centrorhynchus sp.). All parasite helminth species showed an aggregated pattern of distribution. The most infected organs were kidneys, small intestine, large intestine and pharyngeal zone. The host body size was important in determining the parasites abundance of G. repandum. At the level of component community G. repandum was the species with highest prevalence of infection and Bursotrema aff. tetracotyloides was the dominant species. Helminth species showed four significant pairs of covariation and two significant pairs of association in the infracommunities of Leptodactylus latinasus.

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The Roles of Ecological and Evolutionary Influences in Providing Structure to Parasite Species Assemblages

Cited by 59 publications

References 34 publications

Bacterial community assembly based on functional genes rather than species

Bacterial community assembly based on functional genes rather than species

Metazoan parasites of deep-sea fishes from the South Eastern Pacific: Exploring the role of ecology and host phylogeny

Helminth community structure of the oven frog Leptodactylus latinasus (Anura, Leptodactylidae) from Corrientes, Argentina

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