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1.
Zootaxa ; 4786(4): zootaxa.4786.4.9, 2020 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-33056466

RESUMO

The materials on the genus Vertagopus Börner from the Caucasus and Iran are revised. Two new species, V. persicus sp. nov. and V. nunataki sp. nov., are described and fauna of the genus in the Western Asia is commented.


Assuntos
Artrópodes , Distribuição Animal , Animais , Irã (Geográfico)
2.
Zookeys ; 945: 99-127, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32714007

RESUMO

Species of the genera of the Cryptopygus complex in South Africa are morphologically revised. Five new species of the genus Cryptopygus Willem, 1902 s. s. and one new species of the genus Isotominella Delamare Deboutteville, 1948 are described. Cryptopygus abulbus sp. nov. and C. bulbus sp. nov. have only one chaeta on the anterior side of dens and no chaetae on the anterior side of manubrium, the latter species being characterized by the presence of a bulb at apex of antennae; C. inflatus sp. nov. shows a rare combination of eight ocelli on each side of the head with a tridentate mucro; C. longisensillus sp. nov. has five long s-chaetae on the fifth abdominal segment; C. postantennalis sp. nov. is unique by having a very long and slender postantennal organ with strong inner denticles; Isotominella laterochaeta sp. nov. is the second member of the genus and differs from the type species by many more anterior chaetae on the manubrium and the presence of chaetae on ventral side of metathorax. The genera are discussed and a key to all species of the Cryptopygus complex recorded in South Africa is given. The focus is on the Western Cape Province where the complex is the most diverse and sampling more complete than in other provinces of South Africa.

3.
Zookeys ; 935: 1-24, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32508499

RESUMO

Collembola of the family Isotomidae from the shores of Lake Baikal and from six saline lake catenas of the Buryat Republic (Russia) and Inner Mongolia Province (China) were studied. Pseudanurophorus barathrum Potapov & Gulgenova, sp. nov. and Parisotoma baicalica Potapov & Gulgenova, sp. nov. from Baikal and Ephemerotoma buryatica Potapov, Huang & Gulgenova, sp. nov. and Folsomia mongolica Huang & Potapov, sp. nov. from saline lakes are described here. A morphological description of epitokous males of Scutisotoma acorrelata Potapov, Babenko & Fjellberg, 2006 is given. A list of 23 species of the family Isotomidae found in the shores of studied lakes is provided based on literature sources and newly collected material.

4.
Zootaxa ; 4751(1): zootaxa.4751.1.5, 2020 Mar 16.
Artigo em Inglês | MEDLINE | ID: mdl-32230433

RESUMO

Two new species, Semicerura bryophila sp. nov. and S. draconis sp. nov., are described from the Far East of Russia and north-eastern part of China. S. goryshini Martynova, 1969 is redescribed based on the type material and fresh materials from China and South Korea. The holotype of S. bishopi Maynard, 1951 (eastern areas of the U.S.A.) was studied and commented on. Taxonomic remarks to s-chaetotaxy and the labium of the genus are given.


Assuntos
Artrópodes , Distribuição Animal , Animais , Ásia
5.
Zootaxa ; 4585(3): zootaxa.4585.3.11, 2019 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-31716163

RESUMO

Two new species, T. dorsoduplex sp. nov. (Zhejiang province) and T. wui sp. nov. (Jilin Province) are described. The former species belongs to 'sylvatica' group and differs from all species of the genus by presence of only one pair of macrochaetae on Th. II-Abd. II and specific position of lateral s-chaetae on Abd. IV. The latter species belongs to 'stebaevae' group and differs from closely related species by chaetotaxy of dens (1/5) and abundant axial chaetotaxy of abdominal tergites.


Assuntos
Artrópodes , Distribuição Animal , Animais , China
6.
PeerJ ; 7: e8037, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31741793

RESUMO

Smaller animals display pecular characteristics related to their small body size, and miniaturization has recently been intensely studied in insects, but not in other arthropods. Collembola, or springtails, are abundant soil microarthropods and form one of the four basal groups of hexapods. Many of them are notably smaller than 1 mm long, which makes them a good model for studying miniaturization effects in arthropods. In this study we analyze for the first time the anatomy of the minute springtail Mesaphorura sylvatica (body length 400 µm). It is described using light and scanning electron microscopy and 3D computer reconstruction. Possible effects of miniaturization are revealed based on a comparative analysis of data from this study and from studies on the anatomy of larger collembolans. Despite the extremely small size of M. sylvatica, some organ systems, e.g., muscular and digestive, remain complex. On the other hand, the nervous system displays considerable changes. The brain has two pairs of apertures with three pairs of muscles running through them, and all ganglia are shifted posteriad by one segment. The relative volumes of the skeleton, brain, and musculature are smaller than those of most microinsects, while the relative volumes of other systems are greater than or the same as in most microinsects. Comparison of the effects of miniaturization in collembolans with those of insects has shown that most of the miniaturization-related features of M. sylvatica have also been found in microinsects (shift of the brain into the prothorax, absent heart, absence of midgut musculature, etc.), but also has revealed unique features (brain with two apertures and three pairs of muscles going through them), which have not been described before.

7.
Zookeys ; 855: 31-54, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31244540

RESUMO

The paper considers new and little-known species of the genus Tetracanthella distributed in the Far East of Russia and in Japan. Sensillar chaetotaxy and labial palp, two less known morphological characters for the genus, are discussed. Two new species T.annulata sp. nov. and T.tardoki sp. nov. are described; T.manschurica Kutyreva, 1980 and T czernovae Kutyreva, 1980 are redescribed. For the latter species a lectotype and paralectotypes are designated. Remarks are provided for T.sylvatica Yosii, 1939. A second undescribed species is recorded for Japan. New records for T.orientalis Martynova, 1977 and T.sibirica Deharveng, 1987 are listed.

8.
Biogerontology ; 20(2): 149-157, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30415296

RESUMO

The trade-off between reproduction and somatic maintenance is one of the most studied concepts of modern evolutionary ecology. This theory predicts a negative relationship between maximum species longevity and total reproductive output. However, studies performed on natural animal populations have found contradictory results, probably due to the unlikelihood of wild animals gaining both maximum longevity and maximum potential fecundity. A comparison of the mortality rates and reproductive output of four ecologically distinct rodent species of Cricetidae family that were maintained in the laboratory in controlled conditions revealed the different life-history tactics of subterranean social mole voles and three related aboveground species: hydrophilic water voles, arid dwarf hamsters and steppe lemmings. Regardless of the relatively higher mortality rates at early ages in mole voles, this species has considerably higher maximum species longevity and smaller litter sizes that do not depend on calendar age, whereas in dwarf hamsters and water voles clear negative correlations between female age and litter size were detected. Steppe lemmings, as a semi-social arid species, shared some life-history tactics with both mole voles and aboveground non-social rodents.


Assuntos
Longevidade , Mortalidade , Animais , Evolução Clonal , Fenômenos Ecológicos e Ambientais , Muridae , Reprodução
9.
Zootaxa ; 4399(1): 69-86, 2018 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-29690330

RESUMO

Metisotoma grandiceps (Reuter, 1891), the only veritable predator among springtails, is redescribed from materials collected near the type locality (Taimyr) and from Siberia and Far East. Its distribution in Holarctic is stated and the taxonomic position is discussed. A syntype of M. macnamarai (Folsom, 1918) (Canada) and the holotype of M. ursi (Yosii, 1972) (Japan) were redescribed as far as was possible. Two new species, M. stebaevae sp. nov. and M. bermani sp. nov., from the Altai Mountains and Magadan Region are described. Labial palp, number of s-setae, macrochaetotaxy, and ventral chaetotaxy of body are considered to be of diagnostic value separating the species. Some observations of predator behavior in laboratory conditions are presented.


Assuntos
Artrópodes , Distribuição Animal , Animais , Canadá , Extremo Oriente , Japão , Sibéria
10.
Zootaxa ; 4394(3): 383-394, 2018 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-29690359

RESUMO

Colour pattern is the most common character to identify species in several large genera of Collembola. Its use often raises problems due to various and poorly investigated extent of chromatic variability among species. Isotomurus festus sp. nov. is here described from Kunashir Isl. (the Kuriles, the Far East of Russia). The species, a member of the 'antennalis' group, is characterized by the lack of trichobothria and slender claws, but is greatly variable in coloration. DNA barcoding (COI) results supports that all the colour forms encountered belong to the same species. While colour pattern has been shown to be the most reliable character for species identification in several Entomobryidae genera, it might not be the case in Isotomurus Börner, 1903, the sole large Isotomidae genus where colour pattern is routinely used for taxonomy.


Assuntos
Artrópodes , Distribuição Animal , Estruturas Animais , Animais , Cor , Extremo Oriente , Ilhas , Federação Russa
11.
Zookeys ; (750): 1-40, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29692642

RESUMO

The paper considers blind species of the genus Folsomia having two pairs of macrosetae on both meso- and metathorax and united in so-called 'inoculata' group, which is given a new, more laconic definition. Morphological characters important in the group's taxonomy are discussed and a further division into four subgroups is proposed. Eight new species, i.e., F. amurica Potapov & Kuznetsova, sp. n., F. breviseta Potapov & Kuznetsova, sp. n., F. calcarea Potapov, sp. n., F. imparis Potapov & Hasegawa, sp. n., F. laconica Potapov & Kuznetsova, sp. n., F. tertia Potapov, sp. n., F. trisensilla Potapov, sp. n., and F. tubulata Potapov & Babenko, sp. n., are described. F. hidakana Uchida & Tamura and F. inoculata Stach are redescribed basing on new material, for the latter species the Stach's individuals were also examined. A key to species of the group is given.

12.
Zookeys ; (658): 131-146, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28435389

RESUMO

Folsomia minoraesp. n. and Folsomia australicasp. n. are described from New Zealand and Australia, respectively. Their possible affinity to two different groups of Cryptopygussensu stricto is discussed. Attention is paid to the variability of sensillary patterns of the genital segment in Cryptopygus: mainly, all s-chaetae are subequal, but in more advanced forms the dorsal triplet, lateral duplet or either of them become macrochaeta-like in length. Cryptopygus ulrikeae (= Folsomia ulrikeae Najt & Thibaud, 1987), comb. n. is given a new generic position.

13.
Zootaxa ; 4088(1): 112-28, 2016 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-27394328

RESUMO

Two genera are revised based on material from Buryatia (Russia, East Siberia). Vertagopus ceratus sp. nov. and V. asiaticus sp. nov. are described of which the former species is strictly alpine and is defined by pale colouration, the presence of chaetae on the anterior side of the ventral tube, and abundant sensillar chaetotaxy. V. asiaticus sp. nov. is widely distributed in Asia and is unusual due to only 9 chaetae in apical whorl on tibiotarsi. A key to species of Vertagopus Börner, recorded in the republic is given, and notes on morphology, distribution, and ecology are provided. In the genus Agrenia Börner, a form similar with A. bidenticulata was recorded in mountainous areas. Buryatian populations considerably differ from the diagnosis of the typical arctic A.bidenticulata (Tullberg) by a much longer claw. A conception of A. bidenticulata sensu lato complex is temporarily proposed basing on available materials from Palearctic, including High Arctic, sub-Arctic and South Siberian mountains. The complex consists of several local forms which are different in Claw index and associated Tibiotarsus/Claw ratio, while the dependence of the two indexes on the latitude is shown.


Assuntos
Artrópodes/classificação , Distribuição Animal , Estruturas Animais/anatomia & histologia , Estruturas Animais/crescimento & desenvolvimento , Animais , Artrópodes/anatomia & histologia , Artrópodes/crescimento & desenvolvimento , Ásia , Tamanho Corporal , Ecossistema , Feminino , Masculino , Tamanho do Órgão , Sibéria
14.
Zootaxa ; 4088(2): 257-67, 2016 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-27394339

RESUMO

Phenotypic dimorphism of four species of the genus Proisotoma s.str. is described. The modified specimens are characterized by protruding corneas of eyes, stronger pigmentation, enlarged and more chitinized furca, and extension of clavate tenent hairs in the distal part of the tibiotarsi. The characteristics of the modified specimens indicate higher mobile activity. Both sexes are affected by the dimorphism, with the "mobile" forms mostly co-occuring during the cold season with normal specimens. Proisotoma dualis sp. nov. is described from Buryat Republic.


Assuntos
Artrópodes/anatomia & histologia , Artrópodes/classificação , Distribuição Animal , Estruturas Animais/anatomia & histologia , Estruturas Animais/crescimento & desenvolvimento , Animais , Artrópodes/crescimento & desenvolvimento , Tamanho Corporal , Feminino , Masculino , Tamanho do Órgão , Estações do Ano , Sibéria
15.
Vector Borne Zoonotic Dis ; 16(8): 541-9, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27303915

RESUMO

UNLABELLED: The persistence of tick-borne encephalitis virus (TBEV) in nature is maintained by numerous species of reservoir hosts, multiple transmissions between vertebrates and invertebrates, and the virus adaptation to its hosts. Our Aim: was to compare TBEV isolates from ticks and small wild mammals to estimate their roles in the circulation of the viral subtypes. METHODS: TBEV isolates from two species of ixodid ticks, four species of rodents, and one species of shrews in the Novosibirsk region, South-Western Siberia, Russia, were analyzed using bioassay, hemagglutination, hemagglutination inhibition, neutralization tests, ELISA, reverse transcription with real-time PCR, and phylogenetic analysis. RESULTS: TBEV RNA and/or protein E were found in 70.9% ± 3.0% of mammals and in 3.8% ± 0.4% of ticks. The TBEV infection rate, main subtypes, and neurovirulence were similar between ixodid tick species. However, the proportions of the virus that were pathogenic for laboratory mice and of the Far-Eastern (FE) subtype, as well as the viral loads with the Siberian and the European subtypes for the TBEV in Ixodes pavlovskyi Pomerantsev, 1946 were higher than in Ixodes persulcatus (P. Schulze, 1930). Percentages of infected Myodes rutilus, Sicista betulina, and Sorex araneus exceeded those of Apodemus agrarius and Myodes rufocanus. Larvae and nymphs of ticks were found mainly on rodents, especially on Myodes rufocanus and S. betulina. The proportion of TBEV-mixed infections with different subtypes in the infected ticks (55.9% ± 6.5%) was higher than in small mammals (36.1% ± 4.0%) (p < 0.01). CONCLUSIONS: Molecular typing revealed mono- or mixed infection with three main subtypes of TBEV in ticks and small mammals. The Siberian subtype was more common in ixodid ticks, and the FE subtype was more common in small mammals (p < 0.001). TBEV isolates of the European subtype were rare. TBEV infection among different species of small mammals did not correlate with their infestation rate with ticks in the Novosibirsk region, Russia.


Assuntos
Reservatórios de Doenças , Vírus da Encefalite Transmitidos por Carrapatos/genética , Ixodidae/microbiologia , Mamíferos/microbiologia , Animais , Animais Recém-Nascidos , Vírus da Encefalite Transmitidos por Carrapatos/patogenicidade , Camundongos , Camundongos Endogâmicos ICR , Filogenia , Sibéria , Virulência
16.
Zootaxa ; 4052(3): 345-58, 2015 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-26701434

RESUMO

A new genus is proposed based on a new species from Iran, Ephemerotoma skarzynskii gen. et sp. nov., and three known species: E. huadongensis (Chen, 1985) comb. nov., E. multituberculata (Martynova, 1971) comb. nov. and E. porcella (Ellis, 1976) comb. nov. The genus shares the characters of Subisotoma Stach and Proctostephanus Börner and is distributed in southern areas of Eurasia (Eastern Mediterranean, Iran, Tajikistan, China). Ephemerotoma gen. nov. belongs to the Proisotoma-complex and is characterized by a simple maxillary palp, only 4 guards on labial papilla E and 2 prelabral chaetae. Four s-chaetae on Abd.V are arranged in two rows, two anterior and two posterior chaetae. All members of Ephemerotoma gen. nov. are redescribed or discussed based on type or fresh material, and a key to species of the genus is given. Scutisotoma potapovi Xie & Chen, 2008 is considered a synonym of E. huadongensis, while Proisotoma anopolitana is moved to the genus Proctostephanus. Sexual dimorphism is described for three species.


Assuntos
Artrópodes/classificação , Distribuição Animal , Estruturas Animais/anatomia & histologia , Estruturas Animais/crescimento & desenvolvimento , Animais , Artrópodes/anatomia & histologia , Artrópodes/crescimento & desenvolvimento , Artrópodes/fisiologia , Tamanho Corporal , China , Feminino , Irã (Geográfico) , Masculino , Tamanho do Órgão , Caracteres Sexuais , Tadjiquistão
17.
PLoS One ; 10(9): e0136047, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26355293

RESUMO

We describe and compare the external morphology of eleven clonal strains and one sexual lineage of the globally distributed Folsomia candida, known as "standard" test Collembola. Of the 18 morphological characters studied, we measured 14 to have significant between-strains genetic variations, 9 of these had high heritabilities (>78%). The quantified morphological polymorphism was used to analyse the within-species relationships between strains by using both a parsimony analysis and a distance tree. These two detailed morphological phylogenies have revealed that the parthenogenetic strains grouped themselves into two major clades. However the exact position of the sexual strain remains unclear and further analysis is needed to confirm its exact relationship with the parthenogenetic ones. The two morphologically based clades were found to be the same as the ones previously described using molecular analysis. This shows that despite large within-strain variations, morphological characters can be used to differentiate some strains that have diverged within a single morphospecies. We discuss the potential evolutionary interpretations and consequences of these different levels of phenotypic variability.


Assuntos
Artrópodes/anatomia & histologia , Filogenia , Animais , Padrões de Herança/genética , Especificidade de Órgãos , Fenótipo , Especificidade da Espécie
18.
Zookeys ; (424): 19-57, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25061395

RESUMO

Proturan collections from Magadan Oblast, Khabarovsk Krai, Primorsky Krai, and Sakhalin Oblast are reported here. Twenty-five species are found of which 13 species are new records for Russian Far East which enrich the knowledge of Protura known for this area. Three new species Baculentulus krabbensis sp. n., Fjellbergella lazovskiensis sp. n. and Yichunentulus alpatovi sp. n. are illustrated and described. The new materials of Imadateiella sharovi (Martynova, 1977) are studied and described in details. Two new combinations, Yichunentulus borealis (Nakamura, 2004), comb. n. and Fjellbergella jilinensis (Wu & Yin, 2007), comb. n. are proposed as a result of morphological examination. Keys to species of the genera Fjellbergella and Yichunentulus are given. An annotated list of all species of Protura from Russian Far East is provided and discussed. Widely distributed species were not recorded in this area. This may be because of the high sensitivity of Protura to anthropogenic impact and low dispersal ability of the group.

19.
Zookeys ; (304): 1-16, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23794906

RESUMO

In this paper, we describe the new genus Pauropygus gen. n. which includes three minute species, blind and unpigmented, living in interstitial littoral habitats in tropical or subtropical countries. Two of these species are new to science (type species Pauropygus projectus sp. n. from New Caledonia and Pauropygus pacificus sp. n. from China); the third one, originally described in the genus Cryptopygus (Cryptopygus caussaneli Thibaud, 1996), has a larger pantropical distribution. We synonymize here Cryptopygus riebi Barra, 1997 from South Africa with Pauropygus caussaneli. Two paratypes of the Mexican species Cryptopygus axayacatl Palacios & Thibaud, 2001 turned also to be Pauropygus caussaneli, while the holotype and remaining paratypes of this species support its placement in Proisotomodes. Among the Cryptopygus complex, Pauropygus gen. n. is easily recognized by characters of mouthparts (presence of two large projections on pleural fold, basolateral field with 6 chaetae, modified mouthparts) and reduced sensillar chaetotaxy (tergal sensilla 2-3,0-1/0-1,0-1,1-2,1-2,1-3, microsensilla reduced in number: 00/0-100, with sensilla situated in p-row on the abdomen). Small size, absence of eyes and pigment are also shared by all its species. The three species belonging to the genus differ by sensillar chaetotaxy.

20.
Zootaxa ; 3682: 305-30, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-25243289

RESUMO

Nine new species of the genus Folsomia are described from Buryatia (Russia, East Siberia): F. biparis sp. nov., F. fumosa sp. nov., F. heterothorax sp. nov., F. maximovi sp. nov., F. pseudovtorovi sp. nov., F. sensivillosa sp. nov., F. uniparis sp. nov., F. uniramia sp. nov., and F. vitimica sp. nov. A complete list and a key to species recorded in the Buryatia are given, and their morphology, distribution, and ecology are annotated. The taxonomical groups of species are discussed.


Assuntos
Insetos/anatomia & histologia , Insetos/classificação , Distribuição Animal , Animais , Feminino , Insetos/fisiologia , Masculino , Sibéria , Especificidade da Espécie
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