968 resultados para Genus Rattus
Resumo:
Five new species of the bee genus Augochlorodes from Brazil are described and the type species, A. turrifaciens Moure, 1958, is redescribed. The new species are: A. clementis sp. nov. (from the states of Parana, Santa Catarina and Rio Grande do Sul), A. incomitatus sp. nov. (Rio Grande do Sul), A. politus sp. nov. (Parana), A. rostratus sp. nov. (Rio Grande do Sul) and A. vachali sp. nov. (Parana, Santa Catarina, Sao Paulo). A discriminant function analysis using head measurements is presented to help distinguish the species. An identification key for the species is provided.
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We describe Kochiana new genus to accommodate a small Brazilian theraphosine species described originally as Mygale brunnipes by Koch (1842), resulting in Kochiana brunnipes new combination. Recently, specimens were rediscovered in northeastern Brazilian Atlantic rainforest. A preliminary cladistic analysis using equal weights parsimony and implied weights, was carried out to examine its phylogenetic placement. Kochiana new genus was monophyletic in all trees regardless of weighting scheme or concavity used. There is preliminary evidence for Kochiana new genus monophyly and weak evidence for its placement as sister group of Plesiopelma. Kochiana new genus can be characterized by the presence of a hornshaped spermatheca in females and males with a palpal bulb having prolateral accessory keels and a well developed medial crest on the embolus apex.
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A cladistic analysis using parsimony under equal weights is applied to test the phylogenetic relationships of Itatiaya Mello-Leitao, previously described in Ctenidae. The data matrix comprised 25 taxa scored for a total of 47 characters. The cladistic analysis yielded two equally parsimonious trees of 124 steps. The consensus of the two most parsimonious trees is used to discuss the phylogenetic relationships and justify taxonomic modifications. The results indicate that this genus is a representative of Zoropsidae, which is newly recorded from the Neotropical region. The monophyly of Itatiaya is supported by three non-ambiguous synapomorphies and three homoplastic synapomorphies. A new diagnosis is provided for Itatiaya. Itatiaya pucupucu is placed as sister species to the remaining species of the genus. A polytomic clade composed of Itatiaya modesta, Itatiaya iuba, Itatiaya apipema and the clade formed by Itatiaya tacamby + Itatiaya pykyyra is supported by the presence of modified cylindrical gland spigots. Additionally, the male of I. pykyyra Polotow & Brescovit is described for the first time.
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Eight new species of the spider genus Chrysometa Simon, 1894 (Araneae, Tetragnathidae) are described and illustrated. Chrysometa nubigena n. sp., C. waikoxi n. sp., C. petrasierwaldae n. sp., C. santosi n. sp., C. yanomami n. sp., C. candianii n. sp., C. lomanhungae n. sp., and C. saci n. sp. Those species were collected in a study on the diversity of spider communities along altitudinal gradients in Brazilian Amazonia. C. saci was captured at the Serra do Tapirapeco (Barcelos), while all the other species are from the Pico da Neblina (Sao Gabriel da Cachoeira), the highest mountain in Brazil. We provide new records for C. boraceia, C. flava, C. guttata, C. minuta and C. opulenta, and we describe the male of C. minuta for the first time. We also present the first results on the diversity and altitudinal distribution of the species of Chrysometa at the Pico da Neblina and Serra do Tapirapeco. We sampled the first locality at six different elevations, and obtained 336 specimens distributed in 12 species. Richness and abundance, as well as relative importance peaked at the highest sites sampled (2,000 and 2,400 m). The three most abundant species showed a segregated distribution, being dominant or exclusively distributed in different altitudes. At the Serra do Tapirapeco, sampling at four different elevations up to 1200 m, we only obtained 40 individuals divided in four species, and there was no clear relation to altitude. Most of the new species were found at mid and high altitude sites, while species from lower altitude sites represented widespread species. The comparison with other neotropical spiders inventories highlights the high diversity recorded at Pico da Neblina, which could be assigned to the large environmental variation covered in this work and to the sampling of high-altitude environments. Inventories in the Andean region and other information in the literature also seem to support the association of Chrysometa with high altitude environments.
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The spider genus Pandava Lehtinen previously included two species, P. laminata (Thorell) and P. hunanensis Yin and Bao, known from Asia and the Pacific Islands. The genus is diagnosed by the reduced tegular process on the male palp and the anterior position of the copulatory openings on the female epigynum. In this paper, we present updated descriptions for the known species of Pandava and we describe five new species: Pandava shiva sp. nov. from Pakistan, Pandava sarasvati sp. nov. from Myanmar; Pandava ganesha sp. nov., Pandava kama sp. nov. and Pandava ganga sp. nov., all from India. We also update the generic distribution including the first records of Titanoecidae from Africa.
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In this paper we describe a new genus of Bromehaceae, Lapanthus, restricted to the southern portion of the Espinhaco Range, Minas Germs State, in southeastern Brazil Two new combinations to accommodate species previously described in the genera Orthophytum and cryptanthus and one new synonym are proposed Lapanthus has morphological affinities with both Cryptanthus and Orthophytum but nevertheless differs by the combination of margins of the petals ciliate, presence of lanceolate petal appendages and free stamens, and also by molecular data Cryptanthus and Orthophytum have petals entire along the margins, and the filaments of the most internal whorl are adnate to the petals Lapanthus stands out by having a pair of lanceolate petal appendages, which are almost completely adnate to the petals In Orthophytum, however, appendages are cupuhform or sacciform and they are totally absent in the genus Cryptanthus Lapanthus and Orthophytum present meiotic and mitotic chromosome numbers equal to n=25 and 2n=50, 100 and 150 respectively, while Cryptanthus presents meiotic and mitotic chromosome numbers n=17 and 2n=34, 36, 54 respectively, and this difference is considered to be an autapomorphic feature of Cryptanthus Descriptions of the genus and species, identification keys, illustrations, photographs of living specimens, and taxonomic comments are provided
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Lauromacromia melanica sp. nov. from Conceicao da Barra municipality, Espirito Santo State, Brazil, is described and illustrated based on two males (both in MNRJ n degrees 135). The new species is similar to L. picinguaba differing from it mainly by the absence of pale spots on S3-6 and by the ellipsoid shape of metepisternal pale stripe. A key for males of all species of the genus is provided. A cladistic analysis encompassing 43 external morphological male characters carried out in two distinct procedures, the first with all characters unordered and the second with two or three state characters ordered. The unordered analysis generated only one most-parsimonious tree (66 steps of length, CI = 0.69, RI = 0.62). The hypothesis of monophyly of Lauromacromia is supported and includes three groups, one formed by the Atlantic Forest species (L. melanica sp. nov. + L. picinguaba), and another by the Cerrado species (L. flaviae + (L. bedei + L. luismoojeni)), and L. dubitalis, positioned in polytomy with these two groups. The ordered analysis also generated only one most-parsimonious tree (68 steps of length, CI = 0.70, RI = 0.67), which maintained the monophyly of Lauromacromia but L. dubitalis positioned basally as sister-group to the Atlantic Forest + Cerrado species groups. The geographic distribution of Lauromacromia is updated with a new record of L. luismoojeni based on one adult male (Brazil: Mato Grosso do Sul State) and probable first Brazilian records for L. dubitalis (Amazonas and Para States) based on two larvae. A vicariance hypothesis is proposed to explain spatial evolution of Lauromacromia, and based on current biogeographical classifications we consider Gomphomacromia and Rialla apart from Neotropical biota. Some aspects of biology and ecology of Lauromacromia are also discussed.
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One of the most significant challenges confronting orchid researchers is the lack of specific molecular markers, mainly for species in the Neotropics. Here we report the first set of specific chloroplast microsatellite primers (cpSSR) developed for Neotropical orchids. In total, nine polymorphic cpSSR loci were isolated and characterized in four species occurring in the Brazilian Atlantic Rainforest: Epidendrum cinnabarinum, E. denticulatum, E. fulgens and E. puniceoluteum. Levels of intraspecific polymorphism were characterized using two populations for each species, with 13-20 individuals each. Allele numbers varied from two to three per locus, while the number of haplotypes ranged from three to six per species. Extensive differentiation among the taxa was detected. All markers were successfully cross-amplified in eight other different genera. These cpSSRs markers will enable novel insights into the evolution of this important Neotropical genus.
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The spider genus Anuvinda includes a single species described from India, Anuvinda escheri (Reimoser), based on a female. The male remained unknown and no other specimens beyond the type specimen are known. In this paper we present the first description of the male of A. escheri and the redescription of the female, based on material recently collected in China, Laos and Thailand. In addition, the distribution range of the species is extended to include these three countries.
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A new genus and species of Normanellidae (Copepoda, Harpacticoida), Paranaiara inajae gen. et sp. nov., is described from the continental shelf off the northern coast of Sao Paulo State, Brazil. The new genus differs from the type genus Normanella Brady, 1880 and Sagamiella Lee & Huys, 1999 in its presence of lamelliform caudal rami, a maxillulary endopod represented by 2 setae, an unarmed maxillipedal syncoxa, and reduced setation on P2 enp-2 (without outer spine) and P3 enp-2 (with only 2 inner setae). All these apomorphic character states are shared with the genus Pseudocletodes Scott & Scott, 1893, formerly placed in the family Nannopodidae (ex Huntemanniidae) and here assigned to the Normanellidae. Pseudocletodes can be differentiated from Paranaiara by the loss of the P1 endopod and of the inner seta on P2-P4 enp-1, the presence of only 2 inner setae on P2 enp-2 (instead of 3) and only 1 inner seta on P4 exp-3 (instead of 2), the presence of a second inner seta on P4 enp-2 (instead of 1), the morphology of the fifth pair of legs which are not medially fused and have only 3 endopodal elements (instead of 4) in the male, and the well developed caudal ramus seta V (instead of rudimentary). It is postulated that prehensility of the P1 endopod was secondarily lost in the common ancestor of Paranaiara and Pseudocletodes. An updated family diagnosis of the Normanellidae and a dichotomous identification key to the 22 currently valid species are presented.
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Borgmeiermyia Townsend, 1935 is a small Neotropical genus of Tachinidae (Diptera) with four described species. Brief descriptions are given to the previously unknown females of B. brasiliana Townsend, 1935 and B. paraguayana Sehnal, 1998, and the male of B. peruana Arnaud, 1963. An identification key to the four known species is given, as well as comments on characters with intraspecific variation. Change of depository of the holotype of B. brasiliana from one institution to another is discussed and its current location is given. Also, the first host is recorded for the genus with the occurrence of B. paraguayana para-sitizing Phylloptera aff. ovalifolia Burmeister, 1839 (Orthoptera: Tettigoniidae: Phaneropterinae).
Resumo:
Syftet med den här uppsatsen har varit, dels att undersöka ett antal historielärares förståelse av och attityd till användandet av begreppet genus i historieundervisningen på gymnasiet, dels att analysera vad jämställdhetsmålen i gymnasieskolans styrdokument egentligen säger om be-greppet genus och om detta bör tolkas som ett direktiv att implementera genus i historieun-dervisningen. Undersökningen genomfördes i två steg. Gymnasieskolans styrdokument; skollagen, lä-roplanen för de frivilliga skolformerna samt ämnesbeskrivning och kursplaner för historia A, B och C, närlästes och analyserades utifrån en genusteoretisk grund. Därefter intervjuades sex utvalda gymnasielärare i historia kring begreppet genus i teori och praktik. Resultatet analyse-rades och kategoriserades därefter så att lärarnas genusmedvetenhet och attityd till användan-de av genus i historieundervisningen gick att identifiera.Styrdokumentsgranskningen visade att styrdokumenten idag inte säger någonting expli-cit om användandet av ett genusperspektiv i historieundervisningen men att skollagens och läroplanens jämställdhetsdirektiv vilar på en genusteoretisk grund och därmed indirekt kräver ett genusperspektiv i den konkreta undervisningen. Dokumentens formuleringar kräver en god kunskap kring begreppen jämställdhet och genus för att kunna förstås. Utan den kunskapen riskerar avsaknaden av ett explicit uttalat genusbegrepp att legitimera en historieundervisning utan genusperspektiv.Intervjuresultatet visade att genusmedvetenheten bland de utvalda lärarna var låg och att förekomsten av ett genusperspektiv i den egna undervisningen avgjordes av lärarens eget in-tresse för frågan. Attityden till användandet av ett genusperspektiv i historieundervisningen på gymnasiet kunde hos de flesta tolkas som positiv i teorin men i praktiken omgärdad av en rad förhindrande omständigheter såsom omedvetenhet, tids- och utrymmesbrist, metodbrist och historiedidaktiskt förhållningssätt.
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Uppsatsens första syfte är att utreda begreppen kön och genus. Vad kan dessa omdebatterade begrepp ha för olika betydelse? Uppsatsen andra syfte är att, med hjälp av en liten studie, ge exempel på hur en undersökning av kön och genus i skolan kan se ut. Studien tar sin utgångspunkt i På lika villkor, ett jämställdhetsprojekt som startade i Falu kommun 1994. Påverkar lärarens deltagande i projektet elevernas sätt att vara i förhållande till genus? Svaret blir både nej och ja.
Resumo:
Syftet med denna uppsats har varit att undersöka hur fyra religionslärare vid en gymnasieskola i Norra Mellansverige använder genusperspektivet i sin undervisning.Styrdokumentens direktiv om genus är få och dessutom abstrakta. I läroplanen och kursplanerna för religionskunskap finns det definitioner som öppnar upp för genusperspektivet – något krav på att det skall finnas med går däremot inte att finna. Endast i ämnesplanen för religionskunskap står det att en ”genusdimension” skall synas i undervisningen.Merparten av lärarna anser dessa mål vara relevanta och menar att ett genusperspektiv kontinuerligt anläggs i deras undervisning. Det handlar främst om två delar av religionsundervisningen, dels att diskutera kvinnors ställning i olika religioner och hur religion påverkar vår syn på manlighet respektive kvinnlighet. Dels i form av livsfrågor och vilka könsroller som finns i samhället.Samtidigt finns det både skepsis gentemot genusperspektivet och en okunskap om begreppets innebörd hos vissa lärare. En av lärarna undviker helst att använda ett genusperspektiv i undervisningen då denne anser att det reproducerar stereotypt tänkande om manlighet och kvinnlighet. En annan lärare beskriver begreppet genus som ”biologiskt kön”, vilket leder till att eleverna får en snedvriden bild av begreppet. Det finns med andra ord mer att önska från lärarnas sida när det kommer till arbetet med genus i undervisningen.
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In the shadow of ethno-cultural stereotypes: gender, equity and ethnic relations in Sweden Scientific debates about cultural differences between ”Swedes” and migrants/ethnic minorities in Sweden have fuelled stereotypical categorizations and a socio-cultural demarcation between ”us” and ”them”. The authors argue that this development has underpinned constructions of foreignness. In the light of a critical review of the current debate on honour related violence, the authors discuss – inspired by Georg Simmel’s and Erving Goffman’s classic texts on the stranger, the stigma and the construction of foreignness – alternative understandings of culture and politics of belonging with a focus on gender, agency and identity formation. Formation of cultural and ethnic identity should be related, the authors conclude, to a dynamic interplay between the past and the present. Moreover, the social dimension should be highlighted, in order to avoid a stigmatizing culturalism.