Host Utilization and Distribution of Nubenocephalid Gregarines (Eugregarinorida: Actinocephalidae) Parasitizing Argia spp. (Odonata: Zygoptera) in the Central United States

Cielocha, Joanna J.; Cook, Tamara J.; Clopton, Richard E.

doi:10.1654/4459.1

Cited by 8 publications

(5 citation statements)

References 37 publications

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“…Detwiler and Janovy (2008) demonstrated that gregarine species can infect related Tribolium Macleay (Coleoptera: Tenebrionidae) host species. Cielocha et al (2011) additionally showed that the same species of gregarine, N. secundus infects related host species of Argia within a habitat. Based on morphometric observations, the Calopteryx species pair had distinct gregarines from the other host species.…”

Section: Gregarine Collectionmentioning

confidence: 96%

“…data). Cielocha et al (2011) additionally showed that the same species of gregarine, Nubenocephalus secundus infects related host species of Argia within a habitat. Based on morphometric observations, the Calopteryx species pair had distinct gregarines from the other host species.…”

Section: Gregarine Collectionmentioning

confidence: 96%

“…The same gregarine species are expected to infect sibling host species in the same habitat because gregarine parasites have been shown to be generalist parasites, including gregarine parasites of odonates (Clopton, 2009). For example, Cielocha et al (2011) collected Nubenocephalus secundus Cielocha, Cook & Clopton from at least seven hosts and Nubenocephalus nebraskensis Clopton, Percival & Janovy from two sympatric Argia hosts.…”

Section: Introductionmentioning

confidence: 99%

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Higher gregarine parasitism often in sibling species of host damselflies with smaller geographical distributions

Mlynarek

Hassall

Forbes

2012

Ecological Entomology

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Short running head: Sibling damselfly spp. and gregarine parasitism 3 ABSTRACT 1. This study investigated interspecific variation in parasitism by gregarines (Eugregarinorida: Actinocephalidae), among sibling species of damselflies (Odonata: Zygoptera), in relation to relative size of geographical ranges of host species. 2. Gregarines are considered generalist parasites, particularly for taxonomically related host species collected at the same sites or area. Prevalence and median intensity of gregarine parasitism was obtained for 1,338 adult damselflies, representing 14 species (seven sibling species pairs) across three families within the suborder Zygoptera. Damselflies were collected at six local sites in Southeastern Ontario, during same periods over the season. 3. Six of seven species pairs had significant differences in parasitism between sibling species.The less widespread host species was the more parasitized for three species pairs with significant differences in gregarine prevalence, and for three species pairs with differences in median intensity. The more widespread host had higher prevalence of infection as expected, in the fourth species pair.. 4. Future studies on ecological determinants of parasitism among related species should examine robust measures of abundance of species and representation of species regionally.

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Section: Gregarine Collectionmentioning

confidence: 96%

Section: Gregarine Collectionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Higher gregarine parasitism often in sibling species of host damselflies with smaller geographical distributions

Mlynarek

Hassall

Forbes

2012

Ecological Entomology

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“…Tribolium host species. Cielocha et al (2011) additionally showed that the same species of gregarine, Nubenocephalus secundus infects related host species of Argia within a habitat. Based on morphometric observations, the Calopteryx species pair had distinct gregarines from the other host species.…”

Section: Detwiler and Janovy (2008) Demonstrated That Gregarine Specimentioning

confidence: 96%

“…Gregarine parasites are protozoan gut parasites of invertebrates (Cielocha et al 2011). They are ingested as oocysts by the host and then migrate to the mid-gut where they develop (Åbro 1974).…”

Section: Introductionmentioning

confidence: 99%

Explaining Interspecific Variation in Susceptibility and Resistance to Parasitism in Damselflies

Mlynarek¹

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Parasites are often overlooked in evolutionary and community ecology studies. The interactions between hosts and their parasites can have important implications on community structure. Past research has focused on species-specific characteristics of parasites to explain why different, but phylogenetically closely related host species, are under different selection regimes imposed by parasites. However, the evolutionary ecology of hosts is also expected to have important influence in their associations with parasite species. This thesis explores host factors principally that are expected to influence host susceptibility and resistance, in damselflies parasitized internally by gregarines and externally by water mites.There was often considerable interspecific variation in parasitism. When comparing species grouped into sibling species pairs, gregarine parasitism was explained in part by geographic range size of host species, but in most of the cases where there was difference in parasitism between the two closely related host species, it was the host species with the smaller range that had higher levels of parasitism. A similar pattern was observed in Arrenurus water mites parasitizing the same host species, grouped into species pairs. Additionally, Arrenurus species richness was more similar within species pairs than across species pairs meaning that more closely related hosts share similar Arrenurus fauna. At a higher taxonomic level where the host species were not grouped into species pairs, but where host phylogeny was controlled for through comparative methods, host phenology and geographic range size were better predictors of parasite host interactions than were other host characteristics such as host local abundance and host body size. The best predictor models demonstrated that host species most active in iii the middle of the damselfly flight season and with larger geographic ranges had highest levels of parasitism. There was also a positive relationship between host regional representation and the number of parasite species a host species harboured.Interspecific variation in resistance to parasitism and levels of constitutive measures of innate immunity (PO activity) was also documented. However, the species that had highest levels of PO activity were not the ones that showed highest resistance.The most resistant hosts also tended to be the ones with the smaller geographic ranges. In a case study, the ecologically restricted host species (Nehalennia gracilis) resists all its mites in a novel way; the more widespread host species (Nehalennia irene) does not resist any individuals of the same species of parasite, determined by genetic barocding.Resistance evolution in N. gracilis could be because this species was able to evolve parasite recognition for a species from a closed population.The findings of this thesis research further our understanding of host-parasite associations across phylogenetic and geographic scales. I suggest researchers need to be conscious of the complexity of the host-parasite associ...

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Odonates, gregarines and water mites: why are the same host species infected by both parasites?

Ilvonen

Kaunisto

Suhonen

2018

Ecological Entomology

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1. Damselflies and dragonflies are widely parasitised insects and numerous studies have tried to understand this host–parasite relationship. However, most of these studies have concentrated on a single host species, neglecting the larger pattern within the Odonata order.2. The aim of this paper was to examine different damselfly and dragonfly species for common endo‐ and ectoparasites and whether a general infection pattern can be found. Additionally, the goal was to investigate whether the phylogeny of the host species could explain these possible infection patterns. To this end, a dataset from the existing literature was compiled and the prevalence of endoparasitic gregarines and ectoparasitic water mites was analysed for 46 different odonate species.3. Three distinct patterns were found: (i) most of the odonate host species had both gregarines and water mites, rather than only either one or neither; (ii) there appears to be a positive association between gregarine and water mite prevalences across host species; (iii) a weak phylogenetic signal was detected in gregarine prevalence and a strong one in water mite prevalence.4. It is hypothesised that, due to the infection and transmission mechanisms by which water mites and gregarines infect different odonate host species, parasitism is aggregated to common, high‐density species. However, much research is needed in order to fully understand this relationship between odonates and their parasites, especially within the same host populations and host species assemblages.

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Host Utilization and Distribution of Nubenocephalid Gregarines (Eugregarinorida: Actinocephalidae) Parasitizing Argia spp. (Odonata: Zygoptera) in the Central United States

Cited by 8 publications

References 37 publications

Higher gregarine parasitism often in sibling species of host damselflies with smaller geographical distributions

Higher gregarine parasitism often in sibling species of host damselflies with smaller geographical distributions

Explaining Interspecific Variation in Susceptibility and Resistance to Parasitism in Damselflies

Odonates, gregarines and water mites: why are the same host species infected by both parasites?

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