Host-Parasite relationships and co-infection of nasal mites of Chrysomus ruficapillus (Passeriformes: Icteridae) in southern Brazil

Fabiana Fedatto Bernardon,Carolina S Mascarenhas,Joaber Pereira Jr,Gertrud Müller

doi:10.1590/1678-4766e2018025

Fabiana Fedatto Bernardon, Carolina S Mascarenhas + Show 2 more

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https://doi.org/10.1590/1678-4766e2018025

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Abstract

ABSTRACT One hundred twenty-two Chrysomus ruficapillus were examined in southern Brazil, in order to research the presence of nasal mites and the parasite-host relationships. Nasal mite infections were analyzed for: presence of Ereynetidae and Rhinonyssidae considering the total number of hosts examined; Sexual maturity of males (juveniles and adults); Periods of bird collection and presence of co-infections. Were identified five taxa, four belongs to Rhinonyssidae (Sternostoma strandtmanni, Ptilonyssus sairae, P. icteridius and Ptilonyssus sp.) and one to Ereynetidae (Boydaia agelaii). Adult males were parasitized for one taxa more than juvenile males. Co-infections occurred in 22 hosts, between two, three and four taxa, belonging to Ereynetidae and Rhinonyssidae.The co-infections were more prevalent in austral autumn / winter. The host-parasite relations and co-infections by nasal mites in C. ruficapillus were reported for the first time, contributing to the knowledge about nasal mites in Brazil.

Highlights

One hundred twenty-two Chrysomus ruficapillus were examined in southern Brazil, in order to research the presence of nasal mites and the parasite-host relationships
As relações hospedeiro-parasito e co-infecções por ácaros nasais em C. ruficapillus foram relatadas pela primeira vez, contribuindo para o conhecimento do hospedeiro e ampliando as informações sobre ácaros nasais no Brasil
One hundred twenty-two hosts (20 females, 102 males: 46 adults and 56 juveniles) of Brazilian Pampa were examined from the municipality of Rio Grande, state of Rio Grande do Sul, Brazil (32°14’S; 52°29’W)

Summary

Introduction

One hundred twenty-two Chrysomus ruficapillus were examined in southern Brazil, in order to research the presence of nasal mites and the parasite-host relationships. Cento e vinte e dois Chrysomus ruficapillus foram examinados no extremo sul do Brasil, a fim de pesquisar a presença de ácaros nasais e as relações hospedeiro-parasito. Quatro pertencentes à Rhinonyssidae (Sternostoma strandtmanni, Ptilonyssus sairae, P. icteridius and Ptilonyssus sp.) e um à Ereynetidae (Boydaia agelaii). According to Skoracki et al (2012) it is estimated that the Prostigmata (Trombidiformes) bird parasites could be represented by 5,000 species, of which only 10% are described. These mites occupy different microhabitats in the host body, such as skin, feathers, intracutaneous layers and respiratory tract (Skoracki et al, 2012). Species of Rhinonyssidae are found embedded in the secretions of the cavity (higher humidity), they move slowly in the mucous membranes and cavities (Furman, 1957)

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