Effects of sex and locality on the abundance of lice on the wild rodent Oligoryzomys nigripes

Fernandes, Fernanda Rodrigues; Cruz, Leonardo Dominici; Linhares, Arício Xavier

doi:10.1007/s00436-012-3009-4

Cited by 14 publications

(22 citation statements)

References 45 publications

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“…Kiffner et al (2014) observed that flea abundance was positively related to the body mass of host rodents. Fernandes et al (2012) found that the sex and locality of O. nigripes significantly contributed to the variation in lice abundance on each host. Ectoparasites that do not spend their entire life cycle on the host can be less influenced by factors such as the immunological sex differences of the host species, and the co-occurrence of phylogenetically close host species in the environment.…”

Section: Discussionmentioning

confidence: 97%

“…The parasitic exchange can be influenced by the host density and the number of host species sharing the same parasites (Arneberg et al 1998;Krasnov et al 2002;Fernandes et al 2012). Fernandes et al 2012 showed that the abundance of lice parasitizing the host Oligoryzomys nigripes in ESI was significantly higher than in ESMG, probably as a reflection of both a higher host density and a greater number of host species occurring in ESI.…”

Section: Discussionmentioning

confidence: 98%

“…All statistical procedures were performed using R version 3.1.2 (R Development Core Team 2014). The analysis methodology applied used in this study is similar to that described by Fernandes et al (2012).…”

Section: Discussionmentioning

confidence: 99%

“…A higher density of a given host species increases the chances of ectoparasite transmission between inFernanda Rodrigues Fernandes et al 516 traspecific individuals (Krasnov et al 2006;Ryder et al 2007) and a higher diversity of host species increases the chances of ectoparasitic exchange between interspecific individuals if different species share the same parasites (Dobson 2004;Lareschi and Krasnov 2010;Fernandes et al 2012). The transmission of ectoparasites can occur through direct contact (Darolova et al 2001;Valera et al 2003) or rarely by phoresy, when parasites attach themselves to other more mobile individual parasites, in order to increase their dispersal distance (Houck and O'Connor 1991;Harbison et al 2009).…”

Section: Introductionmentioning

confidence: 96%

“…If the males and females of a host species differ in their morphology, physiology, and behavior, parasite abundance can also be influenced by the sex of the host (Fernandes et al 2012). Many mammalian species exhibit sexual dimorphism in terms of size, with males being bigger than females in more than 45% of species (Lindenfors et al 2007b).…”

Section: Introductionmentioning

confidence: 98%

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Effect of body size on the abundance of ectoparasitic mites on the wild rodent Oligoryzomys nigripes

Fernandes

Cruz

Linhares

et al. 2015

Acta Parasitologica

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The abundance of parasites on a host can be affected by several factors; in this study, we investigated the influence of sex and body size of the host rodent Oligoryzomys nigripes on the abundance of ectoparasitic mites (Acari: Mesostigmata). The generalized linear model indicated that body size (indicative of age) of the host rodent O. nigripes significantly contributed to the variation in the abundance of mites on host rodents at the Experimental Station of Itirapina. This trend of increased parasitism on hosts with larger body sizes may be linked to the fact that larger individuals are able to support the coexistence of a larger number of parasites, and being more mobile, are more exposed to infection by parasites.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

Effect of body size on the abundance of ectoparasitic mites on the wild rodent Oligoryzomys nigripes

Fernandes

Cruz

Linhares

et al. 2015

Acta Parasitologica

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Alaria mesocercariae in the tails of red-sided garter snakes: evidence for parasite-mediated caudectomy

et al. 2015

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Trematodes of the genus Alaria develop into an arrested stage, known as mesocercariae, within their amphibian second intermediate host. The mesocercariae are frequently transmitted to a non-obligate paratenic host before reaching a definitive host where further development and reproduction can occur. Snakes are common paratenic hosts for Alaria spp. with the mesocercariae often aggregating in the host’s tail. In the current study, we used morphological examination and molecular analyses based on partial sequences of nuclear large ribosomal subunit gene and mitochondrial cytochrome C oxidase subunit 1 gene to identify larvae in the tails of red-sided garter snakes (Thamnophis sirtalis parietalis) as mesocercariae of Alaria marcianae, Alaria mustelae, and Alaria sp. as well as metacercariae of Diplostomidae sp. of unknown generic affiliation. We assessed infection prevalence, absolute and relative intensity, and associated pathological changes in these snakes. Infection prevalence was 100% for both male and female snakes. Infection intensity ranged from 11 to more than 2,000 mesocercariae per snake tail, but did not differ between the sexes. Gross pathological changes included tail swelling while histopathological changes included mild inflammation and the presence of mucus-filled pseudocysts surrounding mesocercariae, as well as the compression and degeneration of muscle fibers. Our results indicate that mesocercariae can lead to extensive muscle damage and loss in both sexes which likely increases the fragility of the tail making it more prone to breakage. As tail loss in garter snakes can affect both survival and reproduction, infection by Alaria mesocercariae clearly has serious fitness implications for these snakes.

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Differences in the ectoparasite fauna between micromammals captured in natural and adjacent residential areas are better explained by sex and season than by type of habitat

Cevidanes

Proboste

Chirife³

et al. 2016

Parasitol Res

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We compared the ectoparasite fauna in 608 micromammals (chiefly 472 wood mice Apodemus sylvaticus, 63 Algerian mice Mus spretus, and 51 greater white-toothed shrews Crocidura russula) captured in natural and adjacent residential areas in spring and autumn during three consecutive years in four areas in periurban Barcelona (NE Spain). We found little support for an association of urbanization with differences in infestation by ectoparasites. Prevalence of Rhipicephalus sp. tick in wood mice and shrews was significantly higher in residential than in natural habitats, and the opposite was found for the flea Ctenophtalmus andorrensis catalanensis in shrews. Marked differences in the prevalence of the flea Leptopsylla taschenbergi amitina in wood mice between seasons were observed in natural but not in residential habitats, probably due to enhanced flea survival probabilities in the latter. However, as a rule, males were more frequently and heavily infested than females, and the prevalence was higher in autumn than in spring. Our results suggest that the ectoparasite fauna of periurban micromammals is shaped more by other factors than by habitat modification. People living in residential areas are at risk of contact with the arthropods borne by non-commensal micromammals and the pathogens transmitted by them.

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Effects of sex and locality on the abundance of lice on the wild rodent Oligoryzomys nigripes

Cited by 14 publications

References 45 publications

Effect of body size on the abundance of ectoparasitic mites on the wild rodent Oligoryzomys nigripes

Effect of body size on the abundance of ectoparasitic mites on the wild rodent Oligoryzomys nigripes

Alaria mesocercariae in the tails of red-sided garter snakes: evidence for parasite-mediated caudectomy

Differences in the ectoparasite fauna between micromammals captured in natural and adjacent residential areas are better explained by sex and season than by type of habitat

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