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Phylogeny of gregarines (Apicomplexa) as inferred from small-subunit rDNA and beta-tubulin.
The congruence of SSU rDNA and beta-tubulin trees with one another and with morphological data does suggest that further sampling of molecular data will eventually put gregarine diversity into a phylogenetic context. Expand
Species density distributions as null models for ecologically significant interactions of parasite species in an assemblage
A multiple-kind lottery model is presented for use in determining whether species density distributions in parasite species assemblages reveal regularly occurring species-to-species interactions, and is applicable to any system that mimics a multiple- kind lottery in which successes are independent events. Expand
Phylogenetic Relationships, Evolution, and Systematic Revision of the Septate Gregarines (Apicomplexa: Eugregarinorida: Septatorina)
High-level diversification of Septatorina resulted from adaptations of the gametocyst, allowing colonization of both terrestrial and sweet-water habitats, suggesting that evolutionarily, gregarine species track niche resources along lines of transmission; they do not necessarily track host species in evolutionary time. Expand
Standard Nomenclature and Metrics of Plane Shapes for Use in Gregarine Taxonomy
A standard nomenclature and metric set for 278 plane shapes in 23 shape series is delineated as a step toward unifying taxonomic practice within Eugregarinorida. Expand
Distribution and seasonal and diurnal activity patterns of Eutrombicula alfreddugesi (Acari: Trombiculidae) in a forest edge ecosystem.
Larval populations appeared in late April through early May, peaked in abundance in late June and early July, diminished through late summer, and disappeared in midautumn as the ground began to freeze. Expand
The roles of ecological and evolutionary influences in providing structure to parasite species assemblages.
In this review, the presence of a parasite species, in a sample of host individuals, is considered to be an evolutionary phenomenon, but the parasite's population structure is consideredto be an ecological one. Expand
Gregarina niphandrodes n. sp. (Apicomplexa: Eugregarinorida) from adult Tenebrio molitor (L.) with oocyst descriptions of other gregarine parasites of the yellow mealworm.
Gregarina niphandrodes, a new species of septate eugregarine, is described from the adult mealworm, Tenebrio molitor, and Morphological measurements, indices, and oocyst descriptions are given. Expand
Calyxocephalus karyopera g. nov., sp. nov. (Eugregarinorida: Actinocephalidae: Actinocephalinae) from the Ebony Jewelwing Damselfly Calopteryx maculata (Zygoptera: Calopterygidae) in Southeast
Abstract Calyxocephalus karyopera g. nov., sp. nov. (Apicomplexa: Eugregarinorida: Actinocephalidae: Actinocephalinae) is described from the Ebony Jewelwing Damselfly Calopteryx maculata (Odonata:Expand
Host stadium specificity in the gregarine assemblage parasitizing Tenebrio molitor.
The concept of separate, distinct parasite niches corresponding to separate life cycle stages and established by known, predictable life cycle events within a single host species is introduced. Expand
Evolutionary constraints on population structure: the parasites of Fundulus zebrinus (Pisces:Cyprinodontidae) in the South Platte River of Nebraska.
The parasite community as a whole showed resilience, returning to preperturbation diversity following extended periods of high water, and was considered products primarily of the evolved life cycle traits and transmission mechanisms operating in the common fluctuating environment. Expand