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Type material of several polychaete species described by Enrique Rioja from Mexican coasts are lost, and the current status of some species is doubtful. Nereis
oligohalina (Rioja, 1946) was described from the Gulf of Mexico, but it has been considered a junior synonym of Nereis
occidentalis Hartman, 1945, or regarded as a distinct species with an amphiamerican distribution. On the other hand, Nereis
garwoodi González-Escalante & Salazar-Vallejo, 2003, described from Chetumal Bay, Caribbean coasts, could be confused with Nereis
oligohalina. In order to clarify these uncertainties, Nereis
oligohalina is redescribed based on specimens from the Mexican Gulf of Mexico, including a proposed neotype; further, Nereis
garwoodi is redescribed including the selection of lectotype and paralectotypes, and Nereis
confusa
sp. n. is described with material from the Gulf of California. A key for the identification of similar species and some comments about speciation in nereidid polychaetes are also included. 相似文献
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José Albertino Rafael Dayse Willkenia Almeida Marques Francisco Limeira-de-Oliveira 《ZooKeys》2012,(235):41-50
Protosilvius gurupi
sp. n. (Tabanidae, Pangoniinae) is described and illustrated based on seven female and 53 male specimens collected in the Amazonian region at Reserva Biológica Gurupi, Centro Novo do Maranhão municipality, northwest Maranhão, Brazil. This is the first record of Protosilvius in northern Brazil and in the Amazon Basin. An illustrated key to all Protosilvius species is also presented. 相似文献
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Milka Elshishka Stela Lazarova Georgi Radoslavov Petar Hristov Vlada K. Peneva 《ZooKeys》2015,(511):25-68
The taxonomic position of two antarctic dorylaimid species Amblydorylaimus
isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus
paradoxus (Loof, 1975), gen. n., comb. n. are discussed on the basis of morphological, including SEM study, morphometric, postembryonic and sequence data of 18S rDNA and the D2-D3 expansion fragments of large subunit rDNA. The evolutionary trees inferred from 18S sequences show insufficient resolution to determine the assignment of the two species to particular families, moreover Pararhyssocolpus
paradoxus
gen. n., comb. n. (=Rhyssocolpus
paradoxus) previously regarded as a member of Nordiidae or Qudsianematidae, showed distant relationship both to Rhyssocolpus
vinciguerrae and Eudorylaimus spp. The phylogram inferred from 28S sequences revealed that Amblydorylaimus
isokaryon is a member of a well-supported group comprised of several Aporcelaimellus spp., while, no close relationships could be revealed for the Pararhyssocolpus
paradoxus
gen. n., comb. n. to any nematode genus. On the basis of molecular data and morphological characteristics, some taxonomic changes are proposed. Amblydorylaimus
isokaryon is transferred from family Qudsianematidae to family Aporcelaimidae, and a new monotypic genus Pararhyssocolpus
gen. n. is proposed, attributed to Pararhyssocolpidae
fam. n. The diagnosis of the new family is provided together with emended diagnosis of the genera Amblydorylaimus and Pararhyssocolpus
gen. n. Data concerning distribution of these endemic genera in the Antarctic region are also given. 相似文献
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Laboratory experiments have been performed to study the effects of different temperature regimes—constant (16.3±0.8, 20.3±0.8, and 24.6±0.7°C) and graded, with temperatures changing at intervals of 4.4 or 8.8°C within the range of 15.1–25.4°C—on the population dynamics of two dominant species of littoral zooplankton, Daphnia longispina and Diaphanosoma brachyurum. The results show that aperiodic stepwise changes in temperature within the ranges of 16.3–20.4, 20.4–25.1, and 16.3–25.1°C, which may take place in water bodies of the temperate zone in the summer period, can exert either stimulating (direct or delayed) or inhibitory effect on the natural development of D. longispina populations. The development of D. brachyurum, a more stenothermic thermophile, is stimulated only by a stable elevated temperature (24.5±0.9°C). All temperature changes within the above range, except for rapid heating from 16.3 to 25.1°C, either inhibit the development of D. brachyurum populations or have no significant effect on them. 相似文献
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Rogério Bertani 《ZooKeys》2012,(230):1-94
Three aviculariine genera endemic to Brazil are revised. Typhochlaena C. L. Koch, 1850 is resurrected, including five species; Pachistopelma Pocock, 1901 includes two species; and Iridopelma Pocock, 1901, six species. Nine species are newly described: Typhochlaena amma
sp. n., Typhochlaena costae
sp. n., Typhochlaena curumim
sp. n., Typhochlaena paschoali
sp. n., Pachistopelma bromelicola
sp. n., Iridopelma katiae
sp. n., Iridopelma marcoi
sp. n., Iridopelma oliveirai
sp. n. and Iridopelma vanini
sp. n. Three new synonymies are established: Avicularia pulchra Mello-Leitão, 1933 and Avicularia recifiensis Struchen & Brändle, 1996 are junior synonyms of Pachistopelma rufonigrum Pocock, 1901 syn. n., and Avicularia palmicola Mello-Leitão, 1945 is a junior synonym of Iridopelma hirsutum Pocock, 1901 syn. n.
Pachistopelma concolor Caporiacco, 1947 is transferred to Tapinauchenius Ausserer, 1871, making the new combination Tapinauchenius concolor (Caporiacco, 1947)
comb. n. Lectotypes are newly designed for Pachistopelma rufonigrum Pocock, 1901 , Iridopelma hirsutum Pocock, 1901 and Pachistopelma concolor Caporiacco, 1947. Cladistic analyses using both equal and implied weights were carried out with a matrix comprising 62 characters and 38 terminal taxa. The chosen cladogram found with X-Pee-Wee and concavity 6 suggests they are monophyletic. All species are keyed and mapped and information on species habitat and area cladograms are presented. Discussion on biogeography and conservation is provided. 相似文献
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Tim Doherty 《Ecological Management & Restoration》2014,15(3):e9-e9
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R.M. Simmons 《FEBS letters》1983,164(1):201-204
On incubation of B. subtilis RM125(arg15 leuA8 rM? mM?) with DNA from alkalophilic Bacillus, the transformants (Arg+Leu? or Leu?Arg+) appeared at pH 10. The transformants were able to grow even at pH 7. Alkalophilic Bacillus was resistant to bacteriophages π105D1C2·1012 grown on B. subtilis 1012(r-mM+) and π105D1C2·ISMR4 grown on B. subtilis ISMR4rM+rR+mM+mR+), but the recipient B. subtilis and the transformant(Arg+Leu?) were susceptible to both the of the bacteriophages. The results indicate that the transformant is a B. subtilis derivative and that alkalophilicity of alkalophilic Bacillus was transferred to B. subtilis. 相似文献
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Н.С.Борхсениус 《昆虫学报》1958,(2)
Lepidosaphini(cem.Diaspididae), 6 LepidosaphesShim.1 Andaspis MacG. 相似文献
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