Helminth fauna of Passer domesticus (Passeriformes: Passeridae) in the southern extreme of Brazil

Parasitic fauna of the invasive house sparrow (Passer domesticus) from Ñuble region, Chile: an example of co-introduced parasites

“…In comparison to studies in Europe, there are about 13 species of helminths and over 60 species of ectoparasites recorded in the house sparrow from the Old World (Brown & Wilson, 1975;Calegaro-Marques & Amato, 2010), which starkly contrasts with the two helminths and six ectoparasites reported here. However, these results align with previous findings reported from Brazil (Brasil & Amato, 1992;Calegaro-Marques & Amato, 2010;Santos et al, 2018Santos et al, , 2020a. It is thought that most of these parasites were not co-introduced with their hosts or, if they were, they failed to persist in the new environment because there was an absence of susceptible intermediate hosts, there were adverse climate conditions, or there was a small population size, among other reasons (Torchin et al, 2003;MacLeod et al, 2010).…”

“…A Mediorhynchus sp. has been recorded from this host in Peru and Brazil (Tantaleán et al, 2005;Santos et al, 2020a). In Chile, M. papillosus has been reported in the rufous-collared sparrow Zonotrichia capensis (Müller, 1776) (Passerellidae) (Llanos- Soto et al, 2017) and from the shiny cowbird, Molothrus bonariensis (Gmelin, 1789) (Icteridae) (Mena et al, 2020).…”

“…A similar situation has been observed for endoparasites, as approximately 16 species have been reported in Europe (Martínez et al, 1977;Illescas-Gómez & López-Roman, 1980), while in the invaded countries, only a small part of this richness has been recorded, such as the 5-9 species recorded in Brazil (Brasil & Amato, 1992;Calegaro-Marques & Amato, 2010). Thus, in South America, there are noticeably fewer species of ecto-and endoparasites than have been reported from the house sparrow in its primary range, although these data came mostly from Brazil (e.g., Brasil & Amato, 1992;Calegaro-Marques & Amato, 2010;Santos et al, 2018Santos et al, , 2020a. In Chile, there are scarce reports about the parasite fauna of alien hosts, with some examples noted for the monk parakeet (Myopsitta monachus (Boddaert, 1783) (Psittacidae), rock pigeon (Columba livia Gmelin, 1789) (Columbidae), and California quail (Callipepla californica (Shaw, 1798) (Odontophoridae) (Briceño et al, 2017(Briceño et al, , 2021Oyarzún-Ruiz & González-Acuña, 2021).…”