首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 93 毫秒
1.
The paper summarizes the data on oribatid mites of the family Liacaridae and their distribution in the Caucasus. Two new species, Liacarus subiasi from Azerbaijan (differing from the known species in the shape of cuspids and short lamellae) and Dorycranosus musaevi from Daghestan (differing from closely related D. splendens (Coggi, 1898) and D. punctulatus Miheli?i?, 1956 in the presence of the smooth notogaster, wide distal lamellar cuspids, and also in the absence of inner cuspid tooth and the presence of longer ventral setae), are described. The species status of D. punctulatus is reestablished. Liacarus lencoranicus Krivolutsky, 1967 and L. nitidulus Krivolutsky, 1967 are synonymized with L. coracinus C.L. Koch, 1898. D. zachvatkini Kuliev, 1962 (= D. ibericus Dzaparidze, 1973) is redescribed. Data on species variability of Adoristes poppei (Oudemans, 1906) and A. ovatus Koch, 1849 are given.  相似文献   

2.
Mammalakis zambiensis n. sp. is described from the large intestine and caecum of Fukomys anselli (Burda, Zima, Scharff, Macholán & Kawalika), a bathyergid rodent endemic to Zambia. Morphological data for comparison with its three congeners, M. macrospiculum (Ortlepp, 1939), M. spalacis (Marcu, 1930) and M. spalaxi (Kozlov & Jangolenko, 1962) are provided. Based on studies of the type-material, observations of hitherto undescribed morphological characters of M. macrospiculum, a parasite of Bathyergus suillus (Schreber) (Hystricomorpha: Bathyergidae) in South Africa, are presented. To date, the generic diagnosis of Mammalakis Inglis, 1991 is based largely on characters of its type-species, M. macrospiculum. In having three rounded lips, not set-off from the body, a stout oesophagus with a flask-shaped posterior bulb, lateral alae that broaden on the level of the precloacal sucker and cloaca, and mature eggs with a smooth shell, M. zambienis n. sp. corresponds to the characters of the genus. However, the presence of lips with anterior flanges that were observed in M. zambiensis n. sp., and also for the first time in M. macrospiculum, are in contrast with the current diagnosis of Mammalakis. Further studies will be needed to determine if an amendment of the generic diagnosis is indicated.  相似文献   

3.
A total of 64 species belonging to 10 genera of the subfamily Trioxinae (Hymenoptera, Aphidiidae) are recorded from the former USSR: Betuloxys Mackauer, 1960 (6), Binodoxys Mackauer, 1960 (11), Calaphidius Mackauer, 1961 (1), Falciconus Mackauer, 1959 (2), Harkeria Cameron, 1900 (1), Lipolexis, Förster, 1862 (1), Monoctonia Starý, 1962 (2), Monoctonus Haliday,1833 (6), Sergeyoxys Davidian, 2016 (1), and Trioxys Haliday, 1833 (33). Four species, Harkeria angustivalva (Starý, 1959), Monoctonia japonica Rakhshani et Tomanovic, 2015, Monoctonus mali van Achterberg, 1989, and Trioxys iziphia Mackauer, 1967 are recorded from Russia for the first time. The distribution of 20 species already known from Russia is clarified.  相似文献   

4.
Review of the six genera of the Silvestrichilis group (Dilta Strand, Haslundiella Janetschek, Silvestrichilis Wygodzinsky, Silvestrichiloides Mendes, Haslundichilis Wygodzinsky, and Himalayachilis Wygodzinsky) and of the 17 species of the southern Palaearctic genus Silvestrichilis was performed for the first time with a discussion of their phylogenetic relationships and evolutionary trends based on comparative analysis of the geographic distribution of the species and of the distribution of plesiomorphic and apomorphic states of their main morphological features. Haslundichilis quadrii Wygodzinsky, 1952 from northwestern India and H. lindbergi Wygodzinsky, 1962 from western Afghanistan are transferred to the genus Haslundiella, and new combinations Haslundiella quadrii (Wygodzinsky, 1952), comb. n. and Haslundiella lindbergi (Wygodzinsky, 1962), comb. n. are established. A new species, Silvestrichilis polinaesp. n., differs from all the congeners in the strongly dilated fore femur of the male and female, in the maxillary palpus chaetotaxy, and in the structure of the sensory field on the fore femur of the male.  相似文献   

5.
A taxonomic revision of Galliformes (Aves) from the Upper Miocene of Polgárdi has confirmed the presence of five taxa. A large pheasant originally described as Pavo aesculapi phasianoides Jánossy, 1991 is referred to the genus Syrmaticus as a valid species, S. phasianoides (Jánossy, 1991), comb. nov. Small phasianids are represented in Polgárdi by four taxa: Mioryaba magyarica gen. et sp. nov., Eurobambusicola turolicus gen. et sp. nov., Plioperdix hungarica (Jánossy, 1991), and a form similar in size to Mioryaba magyarica, but having a more primitive structure of the tarsometatarsus and carpometacarpus.  相似文献   

6.
Mexican ants of the genus Dolichoderus are revised. Five species of the genus are recorded: D. bispinosus (Olivier, 1792), D. diversus Emery, 1894, D. lutosus (Smith, 1858), D. mariae Forel, 1885 and D. plagiatus (Mayr, 1870). Dolichoderus tridentanodus Ortega-De Santiago et Vásquez-Bolaños, 2012 is synonymized with Camponotus mucronatus Emery, 1890. Early records of D. germaini Emery, 1894 and D. lugens Emery, 1894 from Mexico are misidentifications and those species are excluded from the list of the Mexican fauna. Dolichoderus mariae Forel, 1885 is newly reported for the fauna of Mexico. Identification key to Mexican Dolichoderus species is given.  相似文献   

7.
We described the life cycles of 17 riffle-dwelling mayfly species in a central Japanese stream. Both species of Baetidae (Alainites yoshinensis Gose and Baetis thermicus Uéno) and two of nine species of Heptageniidae (Ecdyonurus scalaris Kluge and Epeorus latifolium Uéno/l-nigrus Matsumura) in this stream were multivoltine (more than one generation per year). Seven other heptageniid species (two unidentified species of Cinygmula, Epeorus aesculus Imanishi, E. curvatulus Matsumura, E. ikanonis Takahashi, E. napaeus Imanishi, and Rhithrogena japonica Uéno) and all six species of Ephemerellidae [Cincticostella elongatula (McLachlan), C. nigra (Uéno), Drunella basalis (Imanishi), D. ishiyamana Matsumura, D. sachalinensis (Matsumura), and D. trispina (Uéno)] were essentially univoltine.  相似文献   

8.
9.
The genetic structure of susceptibility to type 1 diabetes (T1D) in the population of Tomsk was studied. We had a group of T1D patients (N = 285) and a population sample (N = 300) and we studied 58 SNPs localized in the 47 genes which products are involved in various metabolic pathways and processes as fibrogenesis, endothelial dysfunction, and inflammation. Genotyping was performed by mass spectrometry using the Sequenom MassARRAY system (United States). We compared the group of T1D patients and the population sample and found an association with the predisposition to disease for seven markers: rs3765124 of the ADAMDEC1 gene, genotype AA (p = 0.004), allele A (p = 0.033); rs1007856 of the ITGB5 gene, genotype TT (p = 0.015), allele T (p = 0.036); rs20579 of the LIG1 gene, genotype CC (p = 0.004), allele C (p = 0.002); rs12980602 of the IFNL2 gene, allele C (p = 0.029); rs4986819 of the PARP4 gene, allele C (p = 0.044); rs1143674 of the ITGA4 gene genotype GG (p = 0.002); rs679620 of the MMP3 gene, genotype AA (p = 0.008). Thus, the products of genes associated with T1D belong to different molecular classes: metalloproteases (ADAMDEC1, MMP3), cytokines (IL28A), cell surface receptors (ITGA4), adhesion molecules (ITGB5), DNA ligases (LIG1), and ribosyltransferase enzymes (PARP4). The ADAMDEC1, ITGA4, and ITGB5 genes belong to two biological processes: cell communication and signal transduction. The LIG1 and PARP4 genes regulate the metabolism of nucleic acids, MMP3 is involved in the regulation of protein metabolism, and the IFNL2 is involved in the immune response.  相似文献   

10.
A detailed characteristic of the beetle fauna associated with Fomitopsis pinicola (Sw.: Fr.) Karst. (Basidiomycetes, Aphyllophorales) in the Urals and Transurals is given. Thirty species from 14 families have been revealed, the commonest species including Eridaulus jacquemarti Mel., Ennearthron laricinum (Mel.) (Ciidae), Dorcatoma dresdensis Hbst., D. lomnickii Rtt., D. punctulata Muls. (Anobiidae), Diaperis boleti (L.) (Tenebrionidae), Scaphisoma agaricinum (L.), S. inopinatum Löbl, S. subalpinum Rtt. (Scaphidiidae), Ostoma ferruginea (L.), and Peltis grossa (L.) (Peltidae). The main trends in the ecological and trophic specialization of mycetophilous beetles are discussed, and some regularities of formation of mycetophilous complexes at different stages of the trees fungi fruit body development are revealed.  相似文献   

11.
The new data on chromosomes of parasitic wasps of the subfamily Ichneumoninae: Centeterus major (2n = 22), Diadromus troglodytes (2n = 22), D. varicolor (2n = 22), Tycherus infimus (2n = 22), Cratichneumon rufifrons (2n = 26), Eristicus clarigator (2n =.26), and Ctenichneumon funereus (2n = 16) were obtained. Some aspects of the chromosomal variability of Ichneumoninae are discussed.  相似文献   

12.
We carried out an allozyme analysis to investigate polymorphism and genetic structure of the populations of D. incarnata and D. ochroleuca in regions of their joint growth in Russia and Belarus. We found that D. ochroleuca individuals in the populations of the Urals and Siberia, which are distant fragments from the main range of the species, do not differ significantly from individuals within the main part of the area (Belarus) on the basis of the allelic composition of eight gene loci. We revealed that D. ochroleuca and D. incarnata are differentiated by different alleles of the GDH locus. Thus, we established a genetic marker suitable to distinguish these closely related taxa. In addition to the GDH locus, D. ochroleuca and D. incarnata in the places of their joint growth, differ in the allelic structure of the PGI and NADHD loci. D. incarnata from the Urals and Siberia were polymorphic for both loci, and individuals from Belarus were polymorphic for one locus (PGI). In contrast, all D. ochroleuca individuals growing in sympatric populations with polymorphic D. incarnata were homozygous for the same alleles. Thus, comparison of the genetic structure of D. ochroleuca and D. incarnata points to the existence of a genetic isolation and a functioning isolation mechanism even under conditions of their joint growth. We found that the GDH locus in D. incarnata is polymorphic only in populations which grow together with D. ochroleuca, with exception a few examples. Thus, we conclude that variability of the GDH locus in D. incarnata is associated with hybridization with D. ochroleuca.  相似文献   

13.
Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) oviposits in ripening fruit, larvae render crops unmarketable, and significant economic losses can occur. Biological control research has focused on individual natural enemy species against immature D. suzukii. Here we combine two predators and an entomopathogenic nematode, expecting species complementarity and increased control of D. suzukii. In strawberries, Orius insidiosus (Say) (Hemiptera: Anthocoridae) plus Heterorhabditis bacteriophora Poinar (Rhabditida: Heterorhabditidae) resulted in fewest D. suzukii (81% reduction), and in blueberries, results were similar (60% reduction), although H. bacteriophora was not as effective as in strawberries, which was likely due to drier substrate conditions. There was neither strong complementarity nor interference between predators, O. insidiosus and Dalotia coriaria Kraatz (Coleoptera: Staphylinidae). Inclusion of O. insidiosus resulted in 50% fewer D. suzukii than combinations without O. insidiosus. Control of D. suzukii can be improved with multiple natural enemies, and combinations of O. insidiosus with other agents (parasitoids, fungal entomopathogens) should be tested.  相似文献   

14.
The diversity of freshwater Bivalvia in China was assessed on the basis of critical analysis of original and published data on the fauna, morphology, taxonomy, and molecular genetics of this group. The taxonomic composition of the following genera has been considered in depth: Anemina Haas 1969, Cristaria Schumacher 1817, Sinanodonta Modell 1944, Lanceolaria Conrad 1853, Middendorffinaia Moskvicheva et Starobogatov 1973, Nodularia Conrad 1853, Unio Philipsson in Retzius 1788, Inversidens Haas 1911, Sphaerium Scopoli 1777, Pisidium Pfeiffer 1821, Odhneripisidium Kuiper 1962, and Euglesa Leach in Jenyns 1832 = Cyclocalyx Dall 1905. No fewer than 170 bivalve species were demonstrated to occur in the freshwater areas of China. Underestimation of the Bivalvia species abundance in previous studies, including the latest catalog of the Chinese Bivalvia (He and Zhuang, 2013), may be accounted for mostly by inadequate use of morphological methods and limited faunistic data, as well as a little number of taxonomic works supported by molecular data. Both the generic and specific compositions of the Chinese Unioniformes and Luciniformes have been significantly extended and updated. Based on a complex study of conchological characters, the following synonymy was established for three species: Sinanodonta qingyuani He et Zhuang 2013 = S. woodiana (Lea 1834) syn. n., Lanceolaria yueyingae He et Zhuang 2013 = L. eucylindrica C. Lin 1962 syn. n., Acuticosta jianghanensis He et Zhuang 2013 = Nodularia douglasiae (Griffith et Pidgeon 1833) syn. n.  相似文献   

15.
The Coburg Sandstone member of the Hassberge Formation, Middle Keuper, Carnian, Upper Triassic, in the Germanic Basin of Central Europe contains spinicaudatan branchiopods which considerably broaden the known spectrum and provide important data on the phylogenetic history and intercontinental correlation of this systematic group. The spinicaudatan fauna for this lithostratigraphic unit is described in detail and includes Euestheria kozuri sp. nov., E.? sp. nov. A, Gregoriusella striatula sp. nov., Laxitextella freybergi Kelber and Kozur in Kozur and Weems, 2007, L. dorsorecta (Reible, 1962), and Laxitextella? sp. A. Additional discussions deal with Euestheria multicostata (Geyer, 1987), E. winterpockensis (Bock, 1953a), Laxitextella laxitexta (Sandberger in Jones, 1890), Laxitextella multireticulata (Reible, 1962), and “Laxitextella? hausmanni (Schmidt, 1938),” as well as problems with (sub)global zonations that are based on spinicaudatans and suggested to be of Carnian and Norian age.  相似文献   

16.

Background

The aim of this study was to determine the genotype distribution and allelic frequencies of ACE (I/D), AGTR1 (A +1166 C), BDKRB2 (+9/?9) and LEP (G–2548A) genomic variations in 175 Greek athletes who excelled at a national and/or international level and 169 healthy Greek adults to identify whether some particular combinations of these loci might serve as predictive markers for superior physical condition.

Results

The D/D genotype of the ACE gene (p = 0.034) combined with the simultaneous existence of BDKRB2 (+9/?9) (p = 0.001) or LEP (G/A) (p = 0.021) genotypes was the most prevalent among female athletes compared to female controls. A statistical trend was also observed in BDKRB2 (+9/?9) and LEP (G–2548A) heterozygous genotypes among male and female Greek athletes, and in ACE (I/D) only in male athletes. Finally, both male and female athletes showed the highest rates in the AGTR1 (A/A) genotype.

Conclusions

Our results suggest that the co-existence of ACE (D/D), BDKRB2 (+9/?9) or LEP (G/A) genotypes in female athletes might be correlated with a superior level of physical performance.
  相似文献   

17.
18.
The subgenera Roelofsideporaus and Deporaus s. str. of the genus Deporaus with four species (D. affectatus, D. unicolor, D. nidificus, and D. betulae) recorded from the Russian fauna are revised. Keys to the species of the subgenus Roelofsideporaus and to the females of the subgenera Roelofsideporaus and Deporaus s. str. are given. The distribution of D. nidificus in Russia is not confirmed.  相似文献   

19.
20.
The diagnostic significance of molecular markers was assessed for the most common somatic aberrations at the K-ras, TP53, CDKN2A, and MADH4 loci, as well as less common mutations of BRCA1, BRCA2, and CHEK2, arising in preinvasive stages of sporadic adenocarcinoma of the pancreas. The study was performed on paired primary pancreatic adenocarcinoma and normal pancreatic tissue specimens obtained from 37 Russian patients. Surgical adenocarcinoma specimens were subjected to manual microdissection. Mutations of K-ras codon 12 were found in 24 tumor specimens (0.65), but not in normal pancreatic tissue specimens. Mutations of BRCA1 (185delAG, 300T > G, 4153delA, 4158A > G, 5382insC), BRCA2 (695insT, 6174delT), and CHEK2 (1100delC) were not found. The informativeness of allelic losses did not differ significantly among the three tumor suppressor loci and was 60% for TP53 (GDB186817) and CDKN2A (D9S974 + D9S162) and 65.7% for MADH4 (D18S363 + D18S474) (t = 0.48). The CDKN2A locus had the highest LOH frequency of 0.95. For TP53 and MADH4 the LOH frequency was 0.62 and 0.70, respectively. In 80% of adenocarcinomas, at least one locus was characterized with LOH. The overall informativeness of the combined data on K-ras mutations and loss of heterozygosity at 9p, 17p, and 18q was 85.7%. Only 9% of the tumors were characterized with microsatellite instability.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号