Ectoparasites and endoparasites of fish form networks with different structures

Autor(es)

Bellay, S. ^[1] ; de Oliveira, E. F. ^[2] ; Almeida-Neto, M. ^[3] ; Mello, M. A. R. ^[4] ; Takemoto, R. M. ^[1] ; Luque, J. L. ^[5]

Afiliação do(s) autor(es)

^[1] Univ Estadual Maringa, Dept Ciencias Biol, Programa Posgrad Ecol Ambientes Aquat Continentai, BR-87020900 Maringa, Parana - Brazil

^[2] Univ Tecnol Fed Parana, Dept Engn Ambiental, Programa Posgrad Engn Ambiental, Londrina - Brazil

^[3] Univ Fed Goias, Inst Ciencias Biol, Dept Ecol, Programa Posgrad Ecol & Evolucao, Goiania, Go - Brazil

^[4] Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Biol Geral, Belo Horizonte, MG - Brazil

^[5] Univ Fed Rural Rio de Janeiro, Dept Parasitol Anim, Programa Posgrad Ciencias Vet, Seropedica - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Parasitology; v. 142, n. 7, p. 901-909, JUN 2015.
• Citações Web of Science: 10

Resumo

Hosts and parasites interact with each other in a variety of ways, and this diversity of interactions is reflected in the networks they form. To test for differences in interaction patterns of ecto- and endoparasites we analysed subnetworks formed by each kind of parasites and their host fish species in fish-parasite networks for 22 localities. We assessed the proportion of parasite species per host species, the relationship between parasite fauna composition and host taxonomy, connectance, nestedness and modularity of each subnetwork (n = 44). Furthermore, we evaluated the similarity in host species composition among modules in ecto- and endoparasite subnetworks. We found several differences between subnetworks of fish ecto- and endoparasites. The association with a higher number of host species observed among endoparasites resulted in higher connectance and nestedness, and lower values of modularity in their subnetworks than in those of ectoparasites. Taxonomically related host species tended to share ecto- or endoparasites with the same interaction intensity, but the species composition of hosts tended to differ between modules formed by ecto- and endoparasites. Our results suggest that different evolutionary and ecological processes are responsible for organizing the networks formed by ecto- and endoparasites and fish. (AU)

• Processo FAPESP: 07/50633-9 - Redes complexas: uma abordagem por mineracao de dados.
• Beneficiário: Francisco Aparecido Rodrigues
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 05/00587-5 - Modelagem por redes (grafos) e técnicas de reconhecimento de padrões: estrutura, dinâmica e aplicações
• Beneficiário: Roberto Marcondes Cesar Junior
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 06/00265-0 - Frugivoria e dispersão de sementes em morcegos da família Phyllostomidae (Mammalia: Chiroptera)
• Beneficiário: Marco Aurelio Ribeiro de Mello
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores