Search Results - "Boppré, M"

Pyrrolizidine alkaloids in food: a spectrum of potential health consequences by Edgar, J.A, Colegate, S.M, Boppré, M, Molyneux, R.J

“…Contamination of grain with 1,2-dehydropyrrolizidine ester alkaloids (dehydroPAs) and their N-oxides is responsible for large incidents of acute and subacute…”
Get full text

Diverticula in Male Lycorea halia Butterflies (Lepidoptera: Nymphalidae: Danaini: Itunina)—Support Organs for Everted Hairpencils with Unique Ultrastructure by Gnatzy, W, Fischer, O W, Kiesel, A, Vane-Wright, R I, Boppré, M

“…The involvement of the diverticula, a synapomorphy for Itunina, in protrusion and expansion of hairpencils by male Lycorea halia (Hübner, 1816) is demonstrated…”
Get full text

Insect pheromone biosynthesis: stereochemical pathway of hydroxydanaidal production from alkaloidal precursors in Creatonotos transiens (Lepidoptera, Arctiidae) by Schulz, S, Francke, W, Boppre, M, Eisner, T, Meinwald, J

“…The mechanism by which the moth Creatonotos transiens produces its male pheromone, (7R)-hydroxydanaidal, from heliotrine, an alkaloidal precursor of opposite…”
Get full text

Cognitive Performance of Patients with Epilepsy and Calcified Neurocysticercotic Lesions: A Case–Control Study by Boppré, M.C.P, Wille, P.R, Guarnieri, R, Rezek, K, Carqueja, C, Trevisol-Bittencourt, P.C, Walz, J.C, Bianchin, M, von Wangenheim, A, Chaves, M.L, Walz, R

“…Neuropsychological tests were applied to 20 patients with focal epilepsy related to calcified neurocysticercosis (NCC) (mean: three lesions/patient; NCC…”
Get full text

CO2 sensitive receptors on labial palps of Rhodogastria moths (Lepidoptera: Arctiidae): physiology, fine structure and central projection by Bogner, F, Boppre, M, Ernst, K.D, Boeckh, J

“…The tips of the labial palps of Rhodogastria possess a pit housing uniform sensilla, histologically characterized by wall-pores and receptor cells with…”
Get full text

Lepidoptera and pyrrolizidine alkaloids: Exemplification of complexity in chemical ecology by Boppre, M. (Forstzoologisches Institut der Universitat Freiburg, Federal Republic of Germany)

“…Pyrrolizidine alkaloids (PAs) are defensive secondary metabolites found in numerous plant groups. Various insects belonging to different orders have special…”
Get full text

Visual and Chemical Signalling in Butterflies: Functional and Phylogenetic Perspectives by Vane-Wright, R. I., Boppre, Michael

“…The two major signal functions for adult butterflies are protection against predators and intraspecific communication. Protective use of colour patterns (e.g…”
Get full text

Carboxylic acids from hairpencils of male Amauris butterflies (Lep.: Danainae) by Schulz, S, Francke, W, Boppré, M

“…63 Carboxylic acids were identified from the male hairpencils of four species of the genus Amauris (Lep.: Danainae), namely A. echeria (Stoll), A. hecate…”
Get more information

Scent organ development in Creatonotos moths: regulation by pyrrolizidine alkaloids by Schneider, D, Boppre, M, Zweig, J, Horsley, S.B, Bell, T.W, Meinwald, J, Hansen, K, Diehl, E.W

“…7-Hydroxy-6,7-dihydro-5H-pyrrolizine-1-carboxaldehyde is the major volatile component of the scent organs in males of two species of Creatonotos (Lepidoptera,…”
Get full text

Stereochemical course of pheromone biosynthesis in the arctiid moth, Creatonotos transiens by Bell, T W, Boppré, M, Schneider, D, Meinwald, J

“…The biosynthetic conversion of a pyrrolizidine alkaloid (heliotrine, IV) to a male moth pheromone (hydroxydanaidal, III) is found to proceed with inversion of…”
Get full text

Specific Mixtures of Secretions from Male Scent Organs of African Milkweed Butterflies (Danainae) by Schulz, Stefan, Boppré, Michael, Vane-Wright, R. I.

“…The abdominal androconial organs (hairpencils: male scent glands) of samples of ten African milkweed butterfly species (Lepidoptera: Danainae) belonging to…”
Get full text

Pyrrolizidine alkaloid storage in African and australian danaid butterflies by Edgar, J. A., Boppré, M., Schneider, D.

Get full text

Volatile ketones in the hairpencil secretion of danaid butterflies (Amauris and Danaus) by Meinwald, J, Boriack, C J, Schneider, D, Boppré, M, Wood, W F, Eisner, T

Get full text

Redefining "pharmacophagy" by Boppr, Michael

Get full text

Chiral pheromone and reproductive isolation between the gypsy- and nun moth by Hansen, K, Schneider, D, Boppre, M

“…Disparlure, cis-7,8-epoxy-2-methyloctadecane, has been identified as the sex attractant of both the gypsy moth, Lymantria dispar , and the nun moth, L. monacha…”
Get full text

Identification and localization of volatile hairpencil components in maleAmauris ochlea butterflies (Danaidae) by Petty, R. L., Boppré, M., Schneider, D., Meinwald, J.

Get full text

Hepatotoxic Pyrrolizidine Alkaloids in Pollen and Drying-Related Implications for Commercial Processing of Bee Pollen by Boppré, Michael, Colegate, Steven M, Edgar, John A, Fischer, Ottmar W

“…Using HPLC-ESI-MS, several saturated and 1,2-dehydropyrrolizidine alkaloids were detected, mainly as their N-oxides, in fresh pollen collected from flowers of…”
Get full text

Pyrrolizidine Alkaloids of Echium vulgare Honey Found in Pure Pollen by Boppré, Michael, Colegate, Steven M, Edgar, John A

“…The pyrrolizidine alkaloids previously identified in floral honey attributed to Echium vulgare (Boraginaceae) have been detected (8000−14 000 ppm) in pure…”
Get full text

Drei neue fossile Hölzer der Morphogattung Primoginkgoxylon gen. nov. aus der Trias von Kenia by Süss, Herbert, Rößler, Ronny, Boppré, Michael, Fischer, Ottmar W.

Get full text

Forstzoologie-quo vadis in Freiburg? by Boppré, M.

Get full text