Nesting microhabitat comparison of Central stoneroller and Bluehead chub: potential inference for host-switching by nest associates

Abstract The aim of the study is to test a hypothesis for the phylogenetic relationships among mammalian hymenolepidid tapeworms, based on partial (D1–D3) nuclear 28S ribosomal RNA (rRNA) genes, by estimating new molecular phylogenies for the group based on partial mitochondrial cytochrome c oxidase I (COI) and nuclear 18S rRNA genes, as well as a combined analysis using all three genes. New sequences of COI and 18S rRNA genes were obtained for Coronacanthus integrus, C. magnihamatus, C. omissus, C. vassilevi, Ditestolepis diaphana, Lineolepis scutigera, Spasskylepis ovaluteri, Staphylocystis tiara, S. furcata, S. uncinata, Vaucherilepis trichophorus and Neoskrjabinolepis sp. The phylogenetic analyses confirmed the major clades identified by Haukisalmi et al. (Zoologica Scripta 39: 631–641, 2010): Ditestolepis clade, Hymenolepis clade, Rodentolepis clade and Arostrilepis clade. While the Ditestolepis clade is associated with soricids, the structure of the other three clades suggests multiple evolutionary events of host switching between shrews and rodents. Two of the present analyses (18S rRNA and COI genes) show that the basal relationships of the four mammalian clades are branching at the same polytomy with several hymenolepidids from birds (both terrestrial and aquatic). This may indicate a rapid radiation of the group, with multiple events of colonizations of mammalian hosts by avian parasites.

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Phylogenetic evidence for host switching in the evolution of hantaviruses carried by Apodemus mice

Virus Research ◽

10.1016/s0168-1702(02)00179-x ◽

2002 ◽

Vol 90 (1-2) ◽

pp. 207-215 ◽

Cited By ~ 45

Author(s):

Kirill Nemirov ◽

Heikki Henttonen ◽

Antti Vaheri ◽

Alexander Plyusnin

Keyword(s):

Host Switching ◽

Apodemus Mice

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Recognition of larvae of the Tetrabothriidae (Eucestoda): implications for the origin of tapeworms in marine homeotherms

Canadian Journal of Zoology ◽

10.1139/z87-158 ◽

1987 ◽

Vol 65 (4) ◽

pp. 997-1000 ◽

Cited By ~ 19

Author(s):

Eric P. Hoberg

Keyword(s):

Life History ◽

Phylogenetic Relationships ◽

Host Switching ◽

Larval Morphology ◽

Dominant Group ◽

Marine Birds ◽

Marine Communities ◽

Definitive Evidence ◽

Life History Patterns ◽

Ecological Associations

The Tetrabothriidae represent the dominant group of cestodes, previously known only as adult parasites, in marine birds and mammals. Recognition of their unique plerocercoid larvae provides the first definitive evidence for life history patterns and phylogenetic relationships with other cestodes. Affinities of the Tetrabothriidae and Tetraphyllidea, cestodes of elasmobranchs, are indicated by larval morphology and ontogeny. However, patterns of sequential heterochrony in the ontogeny of the adult scolex of Tetrabothrius sp. appear to be unique among the Eucestoda. Tetrabothriids constitute a fauna that originated by host switching from elasmobranchs to homeotherms, via ecological associations, following invasion of marine communities by birds and mammals in the Tertiary.

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The first steps toward a global pandemic: Reconstructing the demographic history of parasite host switches in its native range

10.21203/rs.3.rs-196900/v1 ◽

2021 ◽

Author(s):

Maeva Techer ◽

John Roberts ◽

Reed Cartwright ◽

Alexander Mikheyev

Keyword(s):

Gene Flow ◽

Honey Bee ◽

Varroa Destructor ◽

Temporal Dynamics ◽

Demographic History ◽

Apis Cerana ◽

Host Switching ◽

New Host ◽

Global Pandemic ◽

Novel Host

Abstract Host switching allows parasites to expand their niches. However, successful switching may require suites of adaptations and may decrease performance on the old host. As a result, reductions in gene flow accompany many host switches, driving speciation. Because host switches tend to be rapid, it is difficult to study them in real time and their demographic parameters remain poorly understood. As a result, fundamental factors that control subsequent parasite evolution, such as the size of the switching population or the extent of immigration from the original host, remain largely unknown. To shed light on the host switching process, we explored how host switches occur in independent host shifts by two ectoparasitic honey bee mites (Varroa destructor and V. jacobsoni). Both switched to the western honey bee (Apis mellifera) after it was brought into contact with their ancestral host (Apis cerana), ~70 and ~12 years ago, respectively. Varroa destructor subsequently caused worldwide collapses of honey bee populations. Using whole-genome sequencing on 63 mites collected in their native ranges from both the ancestral and novel hosts, we were able to reconstruct the known temporal dynamics of the switch. We further found multiple previously undiscovered mitochondrial lineages on the novel host, along with genetic equivalent of tens of individuals that were involved in the initial host switch. Despite being greatly reduced, some gene flow remains between mites adapted to different hosts. Our findings suggest that while reproductive isolation may facilitate fixation of traits beneficial for exploitation of the new host, ongoing genetic exchange may allow genetic amelioration of inbreeding effects.

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Host switching 2

Data Processing ◽

10.1016/0011-684x(83)90124-7 ◽

1983 ◽

Vol 25 (3) ◽

pp. 46-47

Keyword(s):

Host Switching

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Odontonia kerangcaris sp. nov., a new bivalve-associated shrimp (Crustacea, Decapoda, Palaemonidae) from East Kalimantan, revealing intrageneric host switching

Zootaxa ◽

10.11646/zootaxa.5081.2.6 ◽

2021 ◽

Vol 5081 (2) ◽

pp. 275-285

Author(s):

CHARLES H.J.M. FRANSEN ◽

MIKE GROENHOF ◽

WERNER DE GIER

Keyword(s):

New Species ◽

Bivalve Mollusk ◽

Host Switching ◽

East Kalimantan ◽

A New Species

A new species of bivalve mollusk dwelling palaemonid shrimp of the genus Odontonia is described from the Berau Islands, East Kalimantan, Indonesia. This is the only Odontonia species recorded as a symbiont of a bivalve mollusk, all other congeners are known to associate with solitary ascidians. The new species belongs to the group wherein the dactylus of the ambulatory pereiopods has an accessory tooth. It differs from these species in the absence of a forward directed proximal tooth on the flexor margin of the corpus of the ambulatory dactyli. It also lacks the small denticles posterior to the distoventral accessory tooth on the dactylar corpus.

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Host–parasite co-evolution

10.1093/oso/9780198832140.003.0014 ◽

2021 ◽

pp. 389-416

Author(s):

Paul Schmid-Hempel

Keyword(s):

Meiotic Recombination ◽

Evolutionary Process ◽

Host Switching ◽

Response To Selection ◽

Red Queen ◽

Arms Races ◽

Migration Rates ◽

Frequency Changes ◽

Host Parasite ◽

Relative Migration

Macroevolutionary patterns concern phylogenies of hosts and their parasites. From those, co-speciation occurs; but host switching is a common evolutionary process and more likely when hosts are close phylogenetically and geographical ranges overlap. Microevolutionary processes refer to allele frequency changes within population. In arms races, traits of hosts and parasites evolve in one direction in response to selection by the other party. With selective sweeps, advantageous alleles rapidly spread in host or parasite population and can become fixed. With antagonistic negative frequency-dependent fluctuations (Red Queen dynamics) genetic polymorphism in populations can be maintained, even through speciation events. A Red Queen co-evolutionary process can favour sexual over asexual reproduction and maintain meiotic recombination despite its other disadvantages (two-fold cost of sex). Local adaptation of host and parasites exist in various combinations; the relative migration rates of the two parties, embedded in a geographical mosaic, are important for this process.

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Helminths of the Hydromyini (Muridae: Hydromyinae) from Papua New Guinea with the description of a new species of Labiobulura (Nematoda: Ascaridida)

Zootaxa ◽

10.11646/zootaxa.1332.1.4 ◽

2006 ◽

Vol 1332 (1) ◽

pp. 57 ◽

Cited By ~ 6

Author(s):

LESLEY R. SMALES

Keyword(s):

New Species ◽

Papua New Guinea ◽

Buccal Cavity ◽

New Guinea ◽

Host Switching ◽

New Host ◽

Dietary Preferences ◽

Host Taxon ◽

A New Species ◽

New Host Records

From a survey of helminths of the alimentary tracts of 26 hydromyins; 11 Leptomys, 1 Mayermys, 3 Neohydromys, 9 Paraleptomys, and 2 Parahydromys from Papua New Guinea an acanthocephalan, Porrorchis hydromuris; a cestode, Mathevotaenia sp.; the trematodes, Brachylaima sp., and a psilostome; and the nematodes, Heterakis fieldingi, Odilia mackerrasae, O, emanuelae, Protospirura kaindiensis, Rictularia mackerrasae, and Capillaria sp. s.l., as well as encapsulated larval ascaridids were found. All represent new host records. Labiobulura leptomyidis n. sp. (Subuluridae), differs from its congener in having longer spicules, no spines on the chordal lobes of the buccal cavity and it is described from Leptomys spp. Spirurida or Ascaridida were the dominant taxa in each helminth assemblage, with dietary preferences being a determinant. Either coevolution and or host switching, sometimes associated with migration between Australia and Papua New Guinea, also appear to have influenced the development of the helminth assemblage in each host taxon.

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Patterns of host use by brood parasitic Maculinea butterflies across Europe

Philosophical Transactions of the Royal Society B Biological Sciences ◽

10.1098/rstb.2018.0202 ◽

2019 ◽

Vol 374 (1769) ◽

pp. 20180202 ◽

Cited By ~ 17

Author(s):

András Tartally ◽

Jeremy A. Thomas ◽

Christian Anton ◽

Emilio Balletto ◽

Francesca Barbero ◽

...

Keyword(s):

Brood Parasitism ◽

Geographical Variation ◽

Host Switching ◽

Host Use ◽

Theme Issue ◽

Geographic Mosaic ◽

New Host ◽

Brood Parasites ◽

Comprehensive Survey ◽

Maculinea Butterflies

The range of hosts exploited by a parasite is determined by several factors, including host availability, infectivity and exploitability. Each of these can be the target of natural selection on both host and parasite, which will determine the local outcome of interactions, and potentially lead to coevolution. However, geographical variation in host use and specificity has rarely been investigated. Maculinea (= Phengaris ) butterflies are brood parasites of Myrmica ants that are patchily distributed across the Palæarctic and have been studied extensively in Europe. Here, we review the published records of ant host use by the European Maculinea species, as well as providing new host ant records for more than 100 sites across Europe. This comprehensive survey demonstrates that while all but one of the Myrmica species found on Maculinea sites have been recorded as hosts, the most common is often disproportionately highly exploited. Host sharing and host switching are both relatively common, but there is evidence of specialization at many sites, which varies among Maculinea species. We show that most Maculinea display the features expected for coevolution to occur in a geographic mosaic, which has probably allowed these rare butterflies to persist in Europe. This article is part of the theme issue ‘The coevolutionary biology of brood parasitism: from mechanism to pattern’.

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