Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Oldřich Hovorka"'
Publikováno v:
European Journal of Entomology, Vol 98, Iss 1, Pp 111-115 (2001)
Labial gland secretions of 26 males of the bumblebee Bombus lucorum (L.), collected in the Czech Republic, were analysed. The secretions consisted of 60 compounds; ethyl (Z)-9-tetradecenoate was the main component (average 53%). Although the males va
Externí odkaz:
https://doaj.org/article/5af25d9f85c64c079ed44781c5e07ce3
Publikováno v:
European Journal of Entomology, Vol 97, Iss 1, Pp 25-31 (2000)
A possibility of using synthetic analogues of juvenile hormone (juvenoids) to disrupt imaginal diapause of the apple blossom weevil, Anthonomus pomorum females was demonstrated. Out of three preparations tested (methoprene, fenoxycarb and W-328) meth
Externí odkaz:
https://doaj.org/article/5fe108d19d2c48bf9b06681c98afee49
Autor:
Petr Žáček, Kateřina Frišonsová, Jiří Kindl, Tomáš Kovalczuk, Irena Valterová, Alena Votavová, Markéta Průchová, Oldřich Hovorka
Publikováno v:
ChemPlusChem. 80:839-850
Two-dimensional comprehensive gas chromatography (GC×GC) coupled with mass detection was used as a tool for biosynthetic studies of bumblebee pheromones. Prior to biosynthetic experiments, the chromatographic behaviour of isotopically modified ester
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e7fba35cfba5d535ea1656383e30f83
https://doi.org/10.1002/cplu.201402420
https://doi.org/10.1002/cplu.201402420
Publikováno v:
Chemistrybiodiversity. 14(5)
Reactive α,β-unsaturated aldehydes, including 4-oxo-2-alkenals, are known to be present in volatile secretions of numerous heteropteran insect species. Because the aldehydes are likely to originate from metabolism of fatty acids, the present study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df3cdfd888ed510964b1b28402037735
https://pubmed.ncbi.nlm.nih.gov/28027605
https://pubmed.ncbi.nlm.nih.gov/28027605
Autor:
Vladimír Fučík, Václav Čeřovský, Miloš Buděšínský, Ivan Votruba, Oldřich Hovorka, Jakub Straka, Zdeněk Voburka, Lenka Borovičková, Josef Cvačka, Jiřina Slaninová, Lucie Bednárová
Publikováno v:
ChemBioChem. 10:2089-2099
Three novel structurally related pentadecapeptides, named lasioglossins, were isolated from the venom of the eusocial bee Lasioglossum laticeps. Their primary sequences were established as H-Val-Asn-Trp-Lys-Lys-Val-Leu-Gly-Lys-Ile-Ile-Lys-Val-Ala-Lys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de35fb6ba13c5d88c23006aa2f21da2a
https://doi.org/10.1002/cbic.200900133
https://doi.org/10.1002/cbic.200900133
Publikováno v:
Journal of Chemical Ecology. 34:458-466
Extracts of three different glands (mandibular, labial, and Dufour's) of virgin Bombus terrestris queens at ten different ages (1-8, 12, and 18 days) were analyzed for chemical composition. One hundred and twenty-seven compounds were identified in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da3e2637c54bbd4a8febfada0ad643e9
https://doi.org/10.1007/s10886-008-9456-9
https://doi.org/10.1007/s10886-008-9456-9
Autor:
Josef Cvačka, Oldřich Hovorka, Jiří Kindl, Edita Kofroňová, Irena Valterová, Pavel Jiroš, Karel Stránský, Soňa Vašíčková
Publikováno v:
Lipids. 43:441-450
Unusual fatty acids with 24, 26, and 28 carbon atoms were found in triacylglycerols (TAGs) isolated from fat body tissue of bumblebee Bombus pratorum. The most abundant one was (Z,Z)-9,19-hexacosadienoic acid. Its structure was determined by mass spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7a676c825f689048574476eae442665
https://doi.org/10.1007/s11745-008-3174-5
https://doi.org/10.1007/s11745-008-3174-5
Publikováno v:
Chemistry & Biodiversity. 3:1015-1022
The cephalic labial gland secretion of Bombus semenoviellus males was analyzed, and its chemical composition is reported for the first time. The secretion functions as sex or marking pheromone. Eighty compounds were identified in the secretion, the m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cd38e9c15b919e0217bd0d23149be9a
https://doi.org/10.1002/cbdv.200690099
https://doi.org/10.1002/cbdv.200690099
Publikováno v:
Journal of Applied Entomology. 129:221-226
To understand the role of chemical signals involved in Scolytus intricatus (Ratzeburg) (Col., Scolytidae) host colonization, the attractiveness of intact and beetle colonized host material was investigated in the field and in the laboratory. In the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be7776d2acd38cfa03e93e05f44a45f3
https://doi.org/10.1111/j.1439-0418.2005.00955.x
https://doi.org/10.1111/j.1439-0418.2005.00955.x
Publikováno v:
Journal of Applied Entomology. 129:70-74
GC-EAD and GC-MS analysis of pheromone gland extracts of sugarcane borer, Diatraea saccharalis, revealed two antennally active compounds, (9Z,11E)-hexadeca-9,1-dienal and (11Z)-hexadec-11-enal, in approximately 10 : 1 ratio. Various doses of identifi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cbeea6d3c4782022c195875be3d1826
https://doi.org/10.1111/j.1439-0418.2005.00927.x
https://doi.org/10.1111/j.1439-0418.2005.00927.x