Ectoparasites associated with rodents (Rodentia) and marsupials (Didelphimorphia) from northeastern Argentina: new host and locality records

Benitez-Ibalo, Alicia Paola; Aguiar, Leonardo Dionel; Benedetto, Ingrid María Desireé Di; Mangold, Atilio José; Milano, Francisca; Debárbora, Valeria Natalia

doi:10.22201/ib.20078706e.2020.91.3161

Cited by 3 publications

(3 citation statements)

References 33 publications

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“…Host specificity in ticks results from various factors including ecological, phylogenetic and physiological aspects [ 6 ]. Ticks exhibit different strategies; some species exhibit host conservationism (co-phylogenetic evolution), while others have been found on co-occurring vertebrates probably because both parasites and hosts exploit the same abiotic niche [ 4 , 5 , 17 , 19 ]. The former would be a case of phylogenetic tracking in response to vertebrate speciation.…”

Section: Discussionmentioning

confidence: 99%

“…Marsupials are unknown in the fossil record of Asia and Africa. It is accepted that modern marsupials arose in the late Cretaceous [ 15 ]; it has been noticed that several species of ticks are associated with marsupials in one or several stages of their life cycle [ 16 , 17 ]. An additional factor is the development of new associations of ticks with exotic domestic and wild animals, introduced recently into an area (hundreds or tens of years), which could obliterate some relationships of a tick species with its primeval wild host(s), leading to new parasite-host associations.…”

Section: Introductionmentioning

confidence: 99%

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Worldwide host associations of the tick genus Ixodes suggest relationships based on environmental sharing rather than on co-phylogenetic events

Estrada-Peña

Guglielmone²,

Nava³

2023

Parasites Vectors

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Background This study aims to capture how ticks of the genus Ixodes gained their hosts using network constructs. We propose two alternative hypotheses, namely, an ecological background (ticks and hosts sharing environmentally available conditions) and a phylogenetic one, in which both partners co-evolved, adapting to existing environmental conditions after the association took place. Methods We used network constructs linking all the known pairs of associations between each species and stage of ticks with families and orders of hosts. Faith’s phylogenetic diversity was used to evaluate the phylogenetic distance of the hosts of each species and changes occurring in the ontogenetic switch between consecutive stages of each species (or the extent of the changes in phylogenetic diversity of hosts for consecutive stages of the same species). Results We report highly clustered associations among Ixodes ticks and hosts, supporting the influence of the ecological adaptation and coexistence, demonstrating a lack of strict tick-host coevolution in most cases, except for a few species. Keystone hosts do not exist in the relationships between Ixodes and vertebrates because of the high redundancy of the networks, further supporting an ecological relationship between both types of partners. The ontogenetic switch of hosts is high for species with enough data, which is another potential clue supporting the ecological hypothesis. Other results suggest that the networks displaying tick-host associations are different according to the biogeographical realms. Data for the Afrotropical region reveal a lack of extensive surveys, while results for the Australasian region are suggestive of a mass extinction of vertebrates. The Palearctic network is well developed, with many links demonstrating a highly modular set of relationships. Conclusions With the obvious exceptions of Ixodes species restricted to one or a few hosts, the results point to an ecological adaptation. Even results on species linked to groups of ticks (such as Ixodes uriae and the pelagic birds or the bat-tick species) are suggestive of a previous action of environmental forces. Graphical Abstract

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Worldwide host associations of the tick genus Ixodes suggest relationships based on environmental sharing rather than on co-phylogenetic events

Estrada-Peña

Guglielmone²,

Nava³

2023

Parasites Vectors

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“…There are very few studies regarding the diversity of ectoparasites in the Esteros del Iberá, including only the records by Oscherov et al (2006Oscherov et al ( , 2012 and Debarbora et al (2012), who form part of the group Biología de Vectores y Parásitos (BIOVyP), Fa.CENA-UNNE. Nevertheless, in the past few years, interest in ectoparasites and their relationship with their hosts has increased in other parts of the province, associated with anthropic areas and not only related to bats (Di Benedetto et al 2017), but also rodents and marsupials (Benitez-Ibalo et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Ectoparasites (Diptera, Hemiptera and Siphonaptera) of bats (Chiroptera) in northeastern Argentina

Di Benedetto,

Oscherov,

Autino

2023

RCHE

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New information is presented regarding bats and their ectoparasite insects in the Esteros del Iberá ecoregion, Corrientes, Argentina. The aim of this study was to explore the diversity of ectoparasite species found on bats in northeastern Argentina and analyze their taxonomic features, hosts, and distribution. Bats were collected from the Molossidae, Pyllostomidae and Vespertilionidae families along with ectoparasites from the Streblidae, Nycteribiidae (Diptera), Polyctenidae (Hemiptera) and Ischnopsyllidae (Siphonaptera) families. Aspidoptera falcata Wenzel, 1976, Megistopoda theodori Wenzel, 1966, Hesperoctenes eumops Ferris & Usinger, 1939 and Hespercotenes fumarius Westwood, 1874 were added to the ectoparasite fauna for the province of Corrientes, increasing the number of species and their geographic distribution. A rarely studied stage of a larva about to emerge from the posterior end of Basilia carteri Scott, 1936 (Nycteribiidae) was recorded. Additionally, 13 parasitological associations were made for the Esteros del Iberá, four of which are new for the province of Corrientes: B. carteri with Myotis riparius Handley, 1960, H. fumarius and H. giganteus Ronderos, 1959 with Molossus rufus É. Geoffroy Saint-Hilaire, 1806 and Myodopsylla wolffsohni wolffsohni Rothschild, 1903 with M. riparius Handley, 1960; the latter being also new for Argentina. These results provide host and locality records and new parasite-host associations.

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Phylogeography of the parasitic mite Laelaps agilis in Western Palearctic shows lineages lacking host specificity but possessing different demographic histories

Nazarizadeh¹,

Martinů²,

Nováková³

et al. 2022

BMC Zool

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Background Laelaps agilis C.L. Koch, 1836 is one the most abundant and widespread parasitic mite species in the Western Palearctic. It is a permanent ectoparasite associated with the Apodemus genus, which transmits Hepatozoon species via the host’s blood. Phylogenetic relationships, genealogy and host specificity of the mite are uncertain in the Western Palearctic. Here, we investigated the population genetic structure of 132 individual mites across Europe from their Apodemus and Clethrionomys hosts. Phylogenetic relationships and genetic variation of the populations were analyzed using cytochrome c oxidase subunit I (COI) gene sequences. Results We recovered three main mtDNA lineages within L. agilis in the Western Palearctic, which differentiated between 1.02 and 1.79 million years ago during the Pleistocene period: (i) Lineage A, including structured populations from Western Europe and the Czech Republic, (ii) Lineage B, which included only a few individuals from Greece and the Czech Republic; and (iii) Lineage C, which comprised admixed populations from Western and Eastern Europe. Contrary to their population genetic differentiation, the lineages did not show signs of specificity to different hosts. Finally, we confirmed that the sympatric congener L. clethrionomydis is represented by a separated monophyletic lineage. Conclusion Differences in the depth of population structure between L. agilis Lineages A and C, corroborated by the neutrality tests and demographic history analyses, suggested a stable population size in the structured Lineage A and a rapid range expansion for the geographically admixed Lineage C. We hypothesized that the two lineages were associated with hosts experiencing different glaciation histories. The lack of host specificity in L. agilis lineages was in contrast to the co-occurring highly host-specific lineages of Polyplax serrata lice, sharing Apodemus hosts. The incongruence was attributed to the differences in mobility between the parasites, allowing mites to switch hosts more often.

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Ectoparasites associated with rodents (Rodentia) and marsupials (Didelphimorphia) from northeastern Argentina: new host and locality records

Cited by 3 publications

References 33 publications

Worldwide host associations of the tick genus Ixodes suggest relationships based on environmental sharing rather than on co-phylogenetic events

Worldwide host associations of the tick genus Ixodes suggest relationships based on environmental sharing rather than on co-phylogenetic events

Ectoparasites (Diptera, Hemiptera and Siphonaptera) of bats (Chiroptera) in northeastern Argentina

Phylogeography of the parasitic mite Laelaps agilis in Western Palearctic shows lineages lacking host specificity but possessing different demographic histories

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