Eurystomus


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Eurystomus

 

a genus of birds of the family Coraciidae, order Coraciiformes. The beak is short, very broad at the base, and slightly humped at the top. The legs are short. The plumage is thick and stiff, mostly muddy green, dark blue, or violet. Of the three species, two are found in tropical Africa and Madagascar, and one in South and East Asia, New Guinea, and Australia.

In the USSR there is one species, the oriental roller or dollarbird (Eurystomus orientalis), which is found in the southern part of Khabarovsk Krai and in Primor’e Krai. The body measures approximately 30 cm in length. The plumage is blackish green, with dark blue wings and tail and a light spot on the wings that is clearly visible when the bird is in flight. The beak and feet are red. The oriental roller, a migratory bird, lives in tall deciduous forests with glades, especially in floodplains. It nests in hollows high above the ground. There are four to six white eggs per clutch. The young are naked and blind when they hatch, as are all young of the order Coraciiformes. The birds feed on insects, which they catch by flying about the trees in flocks, especially at dusk, or by lying in wait for them while sitting on a dry branch or on a treetop. More rarely they hunt for food on trees or on the ground. Sometimes the birds can be pests by catching bees near apiaries.

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Among all these morphospecies, the species Euplotes aediculatus, Euplotes eurystomus, Spirostomum minus and Spirostomum teres, and Paramecium bursaria, Paramecium caudatum and Tetmemena pustulata were the ones that best adapted to the in vitro growth conditions (up to several months) using mineral water and rice grains and Cerophyl medium (Sonneborn, 1957), respectively (data not shown).
Among the 48 morphospecies found in the stream Jose Pereira, 23 are included in the saprobic system and are considered biomarkers (Table 1), in which the vast majority were indicative of organically enriched environments (polluted or extremely polluted water), such as Loxodes striatus, Spirostomum teres, Paramecium caudatum, Euplotes aediculatus, Euplotes eurystomus, Tokophrya lemnarum, Cyclidium cf.
Wizard SSU creek rDNA E12 filtration Wizard SSU rDNA F1 Euplotes eurystomus centr.
Jordan (1877b:355-357) listed a total of seven species from this locality, of which one, Photogenis eurystomus (= Cyprinella venusta eurystoma), was described as new.
Omnivores, or primary consumers of autotrophs, decomposers, and/or detritivores, consisted of the ciliates Euplotes eurystomus (consuming primarily autotrophs and detritivores), Paramecium aurelia (consuming primarily decomposers and some autotrophs), Pa.
Moreover, only six complete mitochondrial genome sequences (Eurystomus orientalis, Halcyon coromanda, H.
Bird Density in Shrub Patches: The density analysis for the shrub patches habitat revealed that Pink-necked Green Pigeon - Treron vernans (19.99 +- 4.52 birds/ha), Scaly-breasted Munia - Lonchura punctulata (17.18 +- 5.21 birds/ha), Peaceful Dove - Geopelia striata (11.18 +- 2.83 birds/ha), Black-headed Munia - Lonchura malacca (7.96 +- 2.67 birds/ha) and Dollar Bird - Eurystomus orientalis (7.88 +- 2.99 birds/ha) was the most dominant bird species in this habitat.
and Spirostomum teres Clapere et Lachmann, 1958 are indicators of polysaprobic environments; Euplotes eurystomus Wrzesmiowski, 1870, Podophrya fixa, Stentor coeruleus and Tokophrya lenarum of alfa-mesosaprobic environments; Coleps sp., Spirostomum minus and Stentor polymorphus Ehrenberg, 1830 of alpha-mesosaprobic to beta-mesosaprobic environments; Frontonia leucas, Urocentrum turbo and Stylonychia pustulata of beta-mesosaprobic environments; and Halteria sp., which indicates oligosaprobic to alpha-mesosaprobic environments (Table 1).
Other important endemic species include the broad-billed roller (Eurystomus orientalis irisi), whose population has declined notably in the last five years.
For example, Jack and Gilbert (1993) found maximum growth rates of 0.87 per day for the oligotrich ciliate Strobilidium gyrans (Stokes, 1887), and 0.86 per day for Euplotes eurystomus (Wrzesniowski, 1870) feeding on a cryptomonad algae at a temperature of 20 [degrees]C.