Helminth communities from amphibians inhabiting agroecosystems in the Pampean Region (Argentina)

Abstract

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Nematodes of Amphibians from the South American Chaco: Distribution, Host Specificity and Ecological Aspects

“…Similarly, in the Pantanal, cosmocercids (e.g., A. hylambatis and C. podicipinus) were the most prevalent and abundant nematodes [23]. The same applies to amphibians of the Pampean ecoregion, in which four of six nematode species found were cosmocercids [24]. Another family with high species richness was Rhabdiasidae.…”

“…chaquensis) were associated with 14 nematode species each in the Pantanal [23] and, in the transition area between the Atlantic Forest and Cerrado, L. podicipinus, a hylid, S. fuscovarius, and a bufonid, R. diptycha were infested with eight nematode species each [4]. In the Pampean region, L. luctator was associated with six nematode species [24]. This is in agreement with the host-parasite associations in Gran Chaco where leptodactylids (L. bufonius) and bufonids (R. major) are the amphibians with the highest species richness of nematodes in HC and DC, respectively.…”

“…This is one third of the 150 nematode taxa listed for amphibians throughout South America [135]. The species richness of parasitic nematodes occurring in the Neotropical region varies among ecoregions: 21 taxa are known from the transition area between the Atlantic Forest and the Cerrado [4], 28 taxa from the Pantanal [23], 6 taxa from the Pampean region [24] and 20 taxa from the Atlantic Forest [25].…”

“…In the Neotropical region, reviews on the parasites of amphibians from specific ecoregions or biomes have been compiled during the last decade [4,[22][23][24][25]. These include, for example, studies on the digeneans of the Humid Chaco (HC), the helminths of the Pantanal, the nematodes of the Atlantic Forest, the helminths of the Pampas and the endoparasites in a transition area between the Cerrado and the Atlantic Forest.…”

Helminth communities in amphibians from Latvia, with an emphasis on their connection to host ecology

“…Common invasion pathways or biological interactions (such as mutual facilitation or competition) may cause parasite species associations in hosts (Dallas et al, 2019) that, so far, have been noted in very few amphibian helminth community studies (Hamann et al, 2006a(Hamann et al, , 2010(Hamann et al, , 2013a(Hamann et al, , 2014. Many studies have shown the effect of anthropogenic habitats, such as soybean agriculture (Koprivnikar & Redfern, 2012), pasture and rice agriculture (Hamann et al, 2006b(Hamann et al, , 2020Campião et al, 2017), crop vs. livestock land uses (Draghi et al, 2020;Portela et al, 2020), and urban and pesticide polluted areas (King et al, 2007), on their composition, species richness and abundances. Helminths may provide clues to freshwater trophic state and water quality (Zargar et al, 2011), but, in general, the effect of freshwater habitat qualities on helminth communities in vertebrate hosts remains understudied.…”