Maria Orlova | Tomsk State University (original) (raw)
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Papers by Maria Orlova
The article presents the data about the ecological peculiarities of the animals of Chiropteraorde... more The article presents the data about the ecological peculiarities of the animals of Chiropteraorder, which dwell in the Southern Urals in the vicinity of the nuclear industry plants. The authors have defined the species composition and biological peculiarities of the animals which dwell in the summer nidifugous colonies on the shore of the lake Akakul. The authors have stated that the bats are the source of local spots of radioactive contamination formation, which are formed in the places of nidifugous colonies, situated in the human buildings.
The ectoparasite fauna on the most widespread synanthropic chiropteran species, the particolored ... more The ectoparasite fauna on the most widespread synanthropic chiropteran species, the particolored bat (Vespertilio murinus L., 1758), is described from localities in the Urals and West Siberia. 86 individual bats have been examined, off which 463 ectoparasite specimens from 8 species have been collected. The species composition and ecology of these arthropods are analyzed. The core of the ectoparasite fauna on the particolored bat in the Urals has been found to consist of gamasine mites of the genus Steatonyssus.
New records of ectoparasites from the eastern water bat Myotis petax Hollister, 1912, belonging t... more New records of ectoparasites from the eastern water bat Myotis petax Hollister, 1912, belonging to the Siberian-Russian Far Eastern complex and earlier regarded as the subspecies of the Daubenton's bat Myotis daubentonii s. lato, are given. Previous records of ectoparasites of the eastern water bat (old interpretation of the species) are revised. Fourteen species of bloodsucking arthropods feed on M. petax; these species include 4, 3, and 7 species of gamasid mites, fleas, and bat flies, respectively.
The population dynamics of the parasitic gamasid mite Macronyssus corethroproctus (Oudemans, 1902... more The population dynamics of the parasitic gamasid mite Macronyssus corethroproctus (Oudemans, 1902) during the overwintering period of its host, the pond bat Myotis dasycneme (Boie, 1825), has been ana lyzed. Regression equations have been obtained that describe the dependence of the abundance of mites on the time since the start of overwintering and on host's sex and body condition.
Data on the invasion of Siberian-Far Eastern bat ectoparasites to the west (Ural region) are pre ... more Data on the invasion of Siberian-Far Eastern bat ectoparasites to the west (Ural region) are pre sented for the first time. Possible reasons for the invasion are discussed.
The study of the dispersal mechanisms of organisms is key to understanding their ecology and dive... more The study of the dispersal mechanisms of organisms is key to understanding their ecology and diversity. The dispersal of parasites is usually mediated by their host. Cimicidae (Heteroptera) is a family of haematophagous ectoparasites for whom bats are the most common and original host. Cimicids spend most of their time in the bat roost, usually only attaching themselves to the body of their host to feed. Distances between bat roosts are too great for the bugs to cross so their transmissions between them are exclusively passive. In our study we present records of bugs found on bats outside roosts. Since adult bugs are more likely to start a new infestation, their high prevalence among these records suggests that the bugs intentionally remain attached to their host in order to disperse, rather than accidentally leaving the roost while feeding. The vast majority of the records come from the genus Nyctalus and some from the genus Pipistrellus, whilst only single findings come from other species. It is possible that this disproportion is caused by the different behaviour of bugs on different bat species. The frequency of transmissions of cimicids by particular bat species correlate with the extent of the migratory behaviour of the bats. However, it is also possible that it is caused by an unequal opportunity to fly out attached to the bat due to the different roosting ecology and behaviour of the bat species.
The article presents the data about the ecological peculiarities of the animals of Chiropteraorde... more The article presents the data about the ecological peculiarities of the animals of Chiropteraorder, which dwell in the Southern Urals in the vicinity of the nuclear industry plants. The authors have defined the species composition and biological peculiarities of the animals which dwell in the summer nidifugous colonies on the shore of the lake Akakul. The authors have stated that the bats are the source of local spots of radioactive contamination formation, which are formed in the places of nidifugous colonies, situated in the human buildings.
The ectoparasite fauna on the most widespread synanthropic chiropteran species, the particolored ... more The ectoparasite fauna on the most widespread synanthropic chiropteran species, the particolored bat (Vespertilio murinus L., 1758), is described from localities in the Urals and West Siberia. 86 individual bats have been examined, off which 463 ectoparasite specimens from 8 species have been collected. The species composition and ecology of these arthropods are analyzed. The core of the ectoparasite fauna on the particolored bat in the Urals has been found to consist of gamasine mites of the genus Steatonyssus.
New records of ectoparasites from the eastern water bat Myotis petax Hollister, 1912, belonging t... more New records of ectoparasites from the eastern water bat Myotis petax Hollister, 1912, belonging to the Siberian-Russian Far Eastern complex and earlier regarded as the subspecies of the Daubenton's bat Myotis daubentonii s. lato, are given. Previous records of ectoparasites of the eastern water bat (old interpretation of the species) are revised. Fourteen species of bloodsucking arthropods feed on M. petax; these species include 4, 3, and 7 species of gamasid mites, fleas, and bat flies, respectively.
The population dynamics of the parasitic gamasid mite Macronyssus corethroproctus (Oudemans, 1902... more The population dynamics of the parasitic gamasid mite Macronyssus corethroproctus (Oudemans, 1902) during the overwintering period of its host, the pond bat Myotis dasycneme (Boie, 1825), has been ana lyzed. Regression equations have been obtained that describe the dependence of the abundance of mites on the time since the start of overwintering and on host's sex and body condition.
Data on the invasion of Siberian-Far Eastern bat ectoparasites to the west (Ural region) are pre ... more Data on the invasion of Siberian-Far Eastern bat ectoparasites to the west (Ural region) are pre sented for the first time. Possible reasons for the invasion are discussed.
The study of the dispersal mechanisms of organisms is key to understanding their ecology and dive... more The study of the dispersal mechanisms of organisms is key to understanding their ecology and diversity. The dispersal of parasites is usually mediated by their host. Cimicidae (Heteroptera) is a family of haematophagous ectoparasites for whom bats are the most common and original host. Cimicids spend most of their time in the bat roost, usually only attaching themselves to the body of their host to feed. Distances between bat roosts are too great for the bugs to cross so their transmissions between them are exclusively passive. In our study we present records of bugs found on bats outside roosts. Since adult bugs are more likely to start a new infestation, their high prevalence among these records suggests that the bugs intentionally remain attached to their host in order to disperse, rather than accidentally leaving the roost while feeding. The vast majority of the records come from the genus Nyctalus and some from the genus Pipistrellus, whilst only single findings come from other species. It is possible that this disproportion is caused by the different behaviour of bugs on different bat species. The frequency of transmissions of cimicids by particular bat species correlate with the extent of the migratory behaviour of the bats. However, it is also possible that it is caused by an unequal opportunity to fly out attached to the bat due to the different roosting ecology and behaviour of the bat species.