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Three larval instars of Nearctic Agathidium angulare Mannerheim, 1852, are described in detail and the first and third stage larvae are figured for the first time; morphology of the stages was analyzed and compared, with special emphasis on measurements, chaetotaxy and porotaxy of head, mouthparts, thorax, abdomen, leg and urogomphi. Preliminary discussion on larval characters of the genus Agathidium is provided.
One hundred thirty-four morphological characters were scored and analysed for larvae of twenty-four species of Camiarinae and fourteen species of other subfamilies of Leiodidae to test the monophyly of Camiarinae and determine phylogenetic relationships within tribes and genera. Two main clades were obtained. Some members of Agyrtodini (Dasypelates gracilis, Eupelates transversestrigosus and both species of Dictydiella) form a clade together with Cholevinae, while the remaining representatives of Agyrtodini, Neopelatopini and Camiarini were recovered as branches within a clade that also includes taxa from Catopocerinae, Leiodinae and Platypsyllinae. Within the latter clade, some of the Agyrtodes species, Zearagytodes and Ragytodina are grouped together, whereas Agyrtodes atropos and Cholevornorpha were placed as a sister group of all members of Paragyrtodes, Neopelatopini, Camiarini, Leiodinae, Platypsyllinae, and Catopocerinae. Camiarini and Neopelatopini except Myrmicholeva were recovered in one clade together with Agathidiini, whereas Myrmicholeva is sister to Platypsyllinae + (Catopocerinae + Pseudoliodini) and this clade is the sister to Paragyrtodes. The analysis strongly supports the view that Camiarinae and its tribes are paraphyletic, grouping possibly ancient and relict taxa that are or have evolved from ancestors of the other subfamilies. However, the obtained clades have low support values, and the results cannot be used to propose a robust, phylogeny-based classification of Leiodidae. The results support previously postulated informal groups, and provide a new insight into relationships within the subfamily Camiarinae as well as the family. A species checklist of described larvae is provided for world Leiodidae, and the habitus and the most interesting or previously unknown larval characters of Camiarinae are illustrated and discussed.
The larval morphology of 7 species belonging to 3 genera of the tribe Agathidiini is given. Third larval instar of Agathidium discoideum Erichson and Liodopria serricornis (Gyllenhal), the first larval instar of Ag. varians varians Beck and Anisotoma orbicularis (Herbst) are described for the first time, third larval instar of Ag. varians varians and Ag. mandibulare Sturm are redescribed in detail, and third larval instar of two species without exact identification (Ag. pisanum or Ag. badium and Ag. bescidicum or Ag. plagiatum or Ag. confusum) are also included. Based on comparative morphology of all known larvae of Agathidiini, cladistic analysis was made and phylogenetic relationships within this tribe of family Leiodidae was hypothesised. Sixty two characters were polarized using outgroup comparison and ontogenetic criterion. No apomorphies distinguish genera Anisotoma from Ayathidium, thus synonimization of them is suggested. Position of Liodopria serricornis in the tribe Agathidiini is doubtful because of lack of synapomorphic characters.
A detailed description and illustrations of the first and third larval instars of Nearctic Anisotoma horni Wheeler, 1979 are given: chaetotaxy, porotaxy and measurements of head, mouthparts, thorax, abdomen, leg and urogomphi.
This is the first detailed description of the mature larva of Anisotoma discolor Melsheimer, 1844, a Nearctic member of the tribe Agathidiini. The setal pattern of cephalic capsule, mouthparts, legs, urogomphi, thoracic and abdominal segments are described and figured, and the measurements are given.
The first, second and third larval instars of Agyrtodes crassus and an unknown species of Zearagytodes, and the third instar of Dictydiella turneri are described in detail, illustrated and measured. The details of their chaetotaxy and porotaxy are provided. Larval characters of Dictydiella leleupi are compared with those of D. turrieri. Morphological and chaetotaxic differences among mature larvae of the Agyrtodini genera Agyrtodes, Cholevomorpha, Dasypelates, Dictydiella, Eupelates, Paragyrtodes, Ragytodina and Zearagytodes are summarized. New morphological characters of Leiodidae larvae are documented and discussed.
Technologia DArT (ang. Diversity Arrays Technology) opracowana z wykorzystaniem technologii mikromacierzy pozwala na jednoczesną analizę wielu sekwencji polimorficznych, których zmienność wynika z różnic genetycznych rozpoznawanych przez enzymy restrykcyjne. Technologię DArT zastosowano dotychczas w badaniach genetycznych 58 gatunków, w tym 53 gatunków roślin, kilku gatunków zwierząt i mikroorganizmów. Umożliwia ona tworzenie profili genetycznych gatunków bez względu na poziom dostępnej informacji molekularnej. Ze względu na automatyzację charakteryzuje się bardzo wysoką wydajnością generowania markerów (kilkaset - kilka tysięcy markerów w jednym eksperymencie), jest tania i wysoce powtarzalna (do 99,8%). Technologia DArT jest przydatna do konstrukcji silnie zagęszczonych map genetycznych w oparciu o same markery DArT lub w połączeniu z innymi typami markerów, do identyfikacji QTL oraz analizy pokrewieństwa genetycznego. Z udziałem markerów DArT skonstruowano mapy molekularne, m.in. dla jęczmienia, pszenicy, sorga, Arabidopsis thaliana, trzciny cukrowej i żyta. Analizowano zmienność genetyczną form w obrębie gatunków strączkowych, pszenicy, jęczmienia, sorga, bananów, eukaliptusa i wielu innych. Technologia DArT jest również wykorzystywana w badaniach mikroorganizmów, w tym w metagenomice oraz w badaniach molekularnych opartych na analizie całego genomu i w poszukiwaniu markerów sprzężonych z ważnymi cechami, przydatnych w hodowli roślin.
Egg, first and second instar larvae of Lymexylon navale (Linnaeus, 1758) are described.
Two larval instars of Quaestus (Quaesticulus) pachecoi (Bolivar, 1915) are described and illustrated for the first time. Chaetotaxy, morphology and measurements indicate that the Q. (Q.) pachecoi has a classic type of development with two instars only and larvae belong to a classic type according to the Deleurance-Glaçon classification.
The Rfc1 gene controls restoration of male fertility in rye (Secale cereale L.) with sterility-inducing cytoplasm CMS-C. Two populations of recombinant inbred lines (RIL) were used in this study to identify DArT markers located on the 4RL chromosome, in the close vicinity of the Rfc1 gene. In the population developed from the 541×2020LM intercross, numerous markers tightly linked with the restorer gene were identified. This group contained 91 DArT markers and three SCARs additionally analyzed in the study. All these markers were mapped in the distance not exceeding 6 cM from the gene of interest. In the second mapping population (541×Ot1-3 intercross), only 9 DArT markers located closely to the Rfc1 gene were identified. Five of these DArT markers were polymorphic in both populations.
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