2015
DOI: 10.1590/s1984-29612015031
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Abstract: The degree of parasite aggregation is determined by a number of factors that are not well understood. In total, 3,746 fish from 73 species and their parasites were analyzed to determine associations between the degree of aggregation by taxon and specific characteristics of the fish. A multiple linear regression (95% confidence interval -CI) was used to show that in most taxa, the degree of parasite aggregation was significantly higher in freshwater fish and schooling fish but varied according to taxon in relat… Show more

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Cited by 24 publications
(22 citation statements)
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“…Aggregated dispersion patterns for ectoparasites and endoparasites have also been described in other freshwater hosts (MESQUITA et al, 2011;TAVARES-DIAS et al, 2014;AMARANTE et al, 2015), and these have been attributed to factors relating to the hosts, parasites and environment. These factors include formation of schools of fish, taxon in relation to sex, habitat, presence of parasite larvae, feeding habits and length of the hosts and the genetic and immune heterogeneity of the hosts (ROHDE et al, 1995;TAVARES-DIAS et al, 2014;AMARANTE et al, 2015).…”
Section: Hostsmentioning
confidence: 92%
“…Aggregated dispersion patterns for ectoparasites and endoparasites have also been described in other freshwater hosts (MESQUITA et al, 2011;TAVARES-DIAS et al, 2014;AMARANTE et al, 2015), and these have been attributed to factors relating to the hosts, parasites and environment. These factors include formation of schools of fish, taxon in relation to sex, habitat, presence of parasite larvae, feeding habits and length of the hosts and the genetic and immune heterogeneity of the hosts (ROHDE et al, 1995;TAVARES-DIAS et al, 2014;AMARANTE et al, 2015).…”
Section: Hostsmentioning
confidence: 92%
“…Because length is a quantitative parameter of parasite infections, it was expected that an association would be found, similar to the association between the degree of parasite aggregation (AMARANTE et al, 2015) and the parasite abundance (according to the observations in chapter 2). However, the main component of dominance is its relationship with a major taxon, and this characteristic may cause the range of association possibilities to be much broader when a great diversity of these fish parasite species with unknown biology and transmission are present.…”
Section: Discussionmentioning
confidence: 66%
“…Recently, Amarante et al (2015) demonstrated that some biotic factors of the hosts, such as body length, food habits, and ability to form schools, may be associated with aggregation values and parasite abundance. It is noteworthy that some macroecological aspects may also influence these processes.…”
Section: Discussionmentioning
confidence: 99%
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“…Typically, many hosts tend to harbor a few parasites, whereas a few hosts harbor many parasites, thus providing evidence of the aggregate abundance of parasites (AMARANTE et al, 2015;POULIN, 1993). From an ecological perspective, the variability in parasite abundance can be explained by the probability of the death of a parasite or by the emergence of a new infection in a given time interval, known as demographic randomness.…”
Section: Introductionmentioning
confidence: 99%