The growth of a $C_0$-semigroup characterised by its cogenerator (2008)
We characterise contractivity, boundedness and polynomial growth for a $C_0$-semigroup in terms of its cogenerator $V$ (or the Cayley transform of the generator) or its resolvent. In particular, we...
A note on plynomially bounded $C_0$-semigroups (2007)
We characterize polynomial growth of a $C_0$-semigroup in terms of the first power of the resolvent of its generator. We do this for a class of semigroups which includes $C_0$-semigroups on Hilbert...
Continuous-time Kreiss resolvent condition on infinite-dimensional spaces (2006)
Given the infinitesimal generator $A$ of a $C_0$-semigroup on the Banach space $ X$ which satisfies the Kreiss resolvent condition, i.e., there exists an $ M>0$ such that $ \Vert (sI-A)^{-1}\Vert...
T. Eisner, J. J. Hurst, J. Meinwald
In the course of exploratory field studies on arthropods with defensive glands, we came across two species which emit a strong and persistent phenolic odor when handled. One is a carabid beetle...
Millipede defense: use of detachable bristles to entangle ants.
Eisner, T, Eisner, M, Deyrup, M
The millipede Polyxenus fasciculatus (Diplopoda; Polyxenida) defends itself against ants by use of a pair of bristle tufts at its rear. When attacked, it wipes the tufts against the ants, thereby...
Eisner, T, Smedley, S R, Young, D K, Eisner, M, Roach, B, Meinwald, J
Male Neopyrochroa flabellata have a natural affinity for cantharidin (Spanish fly). They are attracted to cantharidin baits in the field and feed on the compound if it is offered to them in the...
Chemical basis of courtship in a beetle (Neopyrochroa flabellata): Cantharidin as "nuptial gift".
Eisner, T, Smedley, S R, Young, D K, Eisner, M, Roach, B, Meinwald, J
The amount of cantharidin (Spanish fly) that the Neopyrochroa flabellata male presents to the female as a glandular offering during courtship represents only a small fraction of the total cantharidin...
Chemical egg defense in a green lacewing (Ceraeochrysa smithi)
Eisner, T, Attygalle, A B, Conner, W E, Eisner, M, MacLeod, E, Meinwald, J
The green lacewing Ceraeochrysa smithi (Neuroptera, Chrysopidae), like other members of its family, lays its eggs on stalks, but it is unusual in that it coats these stalks with droplets of an oily...
Sodium: a male moth's gift to its offspring.
Males of the moth Gluphisia septentrionis acquire sodium by drinking from mud puddles. Analyses of male and female bodies indicate that such "puddling" behavior enables the male to provide his mate...
The chemistry of phyletic dominance.
Studies of arthropod defensive chemistry continue to bring to light novel structures and unanticipated biosynthetic capabilities. Insect alkaloids, such as the heptacyclic acetogenin chilocorine and...
The chemistry of sexual selection.
The moth Utetheisa ornatrix (Lepidoptera: Arctiidae) is protected against predation by pyrrolizidine alkaloids that it sequesters as a larva from its foodplants. At mating, the male transfers...
Spermatophore size as determinant of paternity in an arctiid moth (Utetheisa ornatrix).
Female Utetheisa ornatrix exercise postcopulatory mate selection, favoring sperm of larger males. Larger males also produce larger spermatophores, raising the question whether males are selected on...
Biosynthesis of a defensive insect alkaloid: epilachnene from oleic acid and serine.
Attygalle, A B, Blankespoor, C L, Eisner, T, Meinwald, J
The biosynthesis of the azamacrolide epilachnene by the coccinellid beetle Epilachna varivestis has been studied with 2H-labeled oleic acid, 2H-labeled L-serine, and 13C,15N-labeled L-serine. The...
Postcopulatory sexual selection in an arctiid moth (Utetheisa ornatrix).
The offspring of twice-mated female Utetheisa ornatrix show low incidence of mixed paternity. Most progeny are sired exclusively by one male, the larger one, irrespective of parental age, male...
Attygalle, A B, McCormick, K D, Blankespoor, C L, Eisner, T, Meinwald, J
Defensive droplets from glandular hairs of the pupa of the Mexican bean beetle, Epilachna varivestis, contain a group of structurally novel alkaloids, the azamacrolides. The major constituent of this...
Circumvention of prey defense by a predator: ant lion vs. ant.
Eisner, T, Baldwin, I T, Conner, J
The pit-dwelling ant lion Myrmeleon carolinus, although topically sensitive to formic acid, is able to prey on formic acid-spraying ants (Camponotus floridanus). It kills the ants without inducing...
Schulz, S, Francke, W, Boppré, 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 (7S) stereochemistry, was investigated....
McCormick, K D, Deyrup, M A, Menges, E S, Wallace, S R, Meinwald, J, Eisner, T
Chemical analysis of the essential oils of four congeneric species of mint plant (Dicerandra spp.) endemic to Florida revealed a pattern of chemical similarity and dissimilarity that would not have...
Chemical attraction of kleptoparasitic flies to heteropteran insects caught by orb-weaving spiders.
Eisner, T, Eisner, M, Deyrup, M
Insects of the heteropteran families Pentatomidae (stink bugs) and Coreidae (squash bugs), when being eaten by the orb-weaving spider Nephila clavipes, attract flies of the family Milichiidae. The...
Pheromonal advertisement of a nuptial gift by a male moth (Utetheisa ornatrix).
Dussourd, D E, Harvis, C A, Meinwald, J, Eisner, T
Male Utetheisa ornatrix produce a courtship pheromone (hydroxydanaidal) that they derive from systemic pyrrolizidine alkaloid of plant origin. Pheromone titers in males correlate with systemic levels...
Biparental defensive endowment of eggs with acquired plant alkaloid in the moth Utetheisa ornatrix.
Dussourd, D E, Ubik, K, Harvis, C, Resch, J, Meinwald, J, Eisner, T
The eggs of Utetheisa ornatrix contain pyrrolizidine alkaloids. These compounds are contributed by both parents, who sequester them as larvae from their food plants. Females receive alkaloid from the...
Kinnel, R. B., Dieter, R. K., Meinwald, J., Van Engen, D., Clardy, J., Eisner, T., ...
Two straight-chain C15 fish antifeedants have been isolated from the sea hare Aplysia brasiliana. Chemical, spectral, and x-ray diffraction studies led to the characterization of these medium-ring...
Acyclic Ketones in the Defensive Secretion of a “Daddy Longlegs” (Leiobunum vittatum)
Meinwald, J., Kluge, A. F., Carrel, J. E., Eisner, T.
The defensive secretion of the “daddy longlegs” Leiobunum vittatum was analyzed and found to contain the acyclic ketones 4-methylheptan-3-one and E-4,6-dimethyl-6-octen-3-one as its major organic...
Jones, T H, Meinwald, J, Hicks, K, Eisner, T
Analyses of the chief volatile constituents of the defensive secretions of three oplionids were carried out. Leiobunum nigripalpi produces three closely related C7 compounds:...
Gyrinidal: A Sesquiterpenoid Aldehyde from the Defensive Glands of Gyrinid Beetles*
Meinwald, J., Opheim, K., Eisner, T.
Three species of gyrinid beetles (Gyrinus ventralis, Dineutes hornii, and D. serrulatus) have been found to produce the nor-sesquiterpenoid aldehyde gyrinidal in the secretion of their pygidial...
Meinwald, J, Jones, T H, Eisner, T, Hicks, K
The defensive secretion of larvae of the chrysomelid beetle Plagiodera versicolora contains two unstable, volatile methylcyclopentanoid terpenes: a dialdehyde (chrysomelidial) isomeric with...
Millipede defense: use of detachable bristles to entangle ants.
Eisner, T, Eisner, M, Deyrup, M
The millipede Polyxenus fasciculatus (Diplopoda; Polyxenida) defends itself against ants by use of a pair of bristle tufts at its rear. When attacked, it wipes the tufts against the ants, thereby...
Eisner, T, Smedley, S R, Young, D K, Eisner, M, Roach, B, Meinwald, J
Male Neopyrochroa flabellata have a natural affinity for cantharidin (Spanish fly). They are attracted to cantharidin baits in the field and feed on the compound if it is offered to them in the...
Chemical basis of courtship in a beetle (Neopyrochroa flabellata): Cantharidin as "nuptial gift".
Eisner, T, Smedley, S R, Young, D K, Eisner, M, Roach, B, Meinwald, J
The amount of cantharidin (Spanish fly) that the Neopyrochroa flabellata male presents to the female as a glandular offering during courtship represents only a small fraction of the total cantharidin...
Chemical egg defense in a green lacewing (Ceraeochrysa smithi)
Eisner, T, Attygalle, A B, Conner, W E, Eisner, M, MacLeod, E, Meinwald, J
The green lacewing Ceraeochrysa smithi (Neuroptera, Chrysopidae), like other members of its family, lays its eggs on stalks, but it is unusual in that it coats these stalks with droplets of an oily...
Sodium: a male moth's gift to its offspring.
Males of the moth Gluphisia septentrionis acquire sodium by drinking from mud puddles. Analyses of male and female bodies indicate that such "puddling" behavior enables the male to provide his mate...
The chemistry of phyletic dominance.
Studies of arthropod defensive chemistry continue to bring to light novel structures and unanticipated biosynthetic capabilities. Insect alkaloids, such as the heptacyclic acetogenin chilocorine and...
The chemistry of sexual selection.
The moth Utetheisa ornatrix (Lepidoptera: Arctiidae) is protected against predation by pyrrolizidine alkaloids that it sequesters as a larva from its foodplants. At mating, the male transfers...
Spermatophore size as determinant of paternity in an arctiid moth (Utetheisa ornatrix).
Female Utetheisa ornatrix exercise postcopulatory mate selection, favoring sperm of larger males. Larger males also produce larger spermatophores, raising the question whether males are selected on...
Biosynthesis of a defensive insect alkaloid: epilachnene from oleic acid and serine.
Attygalle, A B, Blankespoor, C L, Eisner, T, Meinwald, J
The biosynthesis of the azamacrolide epilachnene by the coccinellid beetle Epilachna varivestis has been studied with 2H-labeled oleic acid, 2H-labeled L-serine, and 13C,15N-labeled L-serine. The...
Postcopulatory sexual selection in an arctiid moth (Utetheisa ornatrix).
The offspring of twice-mated female Utetheisa ornatrix show low incidence of mixed paternity. Most progeny are sired exclusively by one male, the larger one, irrespective of parental age, male...
Attygalle, A B, McCormick, K D, Blankespoor, C L, Eisner, T, Meinwald, J
Defensive droplets from glandular hairs of the pupa of the Mexican bean beetle, Epilachna varivestis, contain a group of structurally novel alkaloids, the azamacrolides. The major constituent of this...
Circumvention of prey defense by a predator: ant lion vs. ant.
Eisner, T, Baldwin, I T, Conner, J
The pit-dwelling ant lion Myrmeleon carolinus, although topically sensitive to formic acid, is able to prey on formic acid-spraying ants (Camponotus floridanus). It kills the ants without inducing...
Schulz, S, Francke, W, Boppré, 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 (7S) stereochemistry, was investigated....
McCormick, K D, Deyrup, M A, Menges, E S, Wallace, S R, Meinwald, J, Eisner, T
Chemical analysis of the essential oils of four congeneric species of mint plant (Dicerandra spp.) endemic to Florida revealed a pattern of chemical similarity and dissimilarity that would not have...
Chemical attraction of kleptoparasitic flies to heteropteran insects caught by orb-weaving spiders.
Eisner, T, Eisner, M, Deyrup, M
Insects of the heteropteran families Pentatomidae (stink bugs) and Coreidae (squash bugs), when being eaten by the orb-weaving spider Nephila clavipes, attract flies of the family Milichiidae. The...
Pheromonal advertisement of a nuptial gift by a male moth (Utetheisa ornatrix).
Dussourd, D E, Harvis, C A, Meinwald, J, Eisner, T
Male Utetheisa ornatrix produce a courtship pheromone (hydroxydanaidal) that they derive from systemic pyrrolizidine alkaloid of plant origin. Pheromone titers in males correlate with systemic levels...
Biparental defensive endowment of eggs with acquired plant alkaloid in the moth Utetheisa ornatrix.
Dussourd, D E, Ubik, K, Harvis, C, Resch, J, Meinwald, J, Eisner, T
The eggs of Utetheisa ornatrix contain pyrrolizidine alkaloids. These compounds are contributed by both parents, who sequester them as larvae from their food plants. Females receive alkaloid from the...
Kinnel, R. B., Dieter, R. K., Meinwald, J., Van Engen, D., Clardy, J., Eisner, T., ...
Two straight-chain C15 fish antifeedants have been isolated from the sea hare Aplysia brasiliana. Chemical, spectral, and x-ray diffraction studies led to the characterization of these medium-ring...
Acyclic Ketones in the Defensive Secretion of a “Daddy Longlegs” (Leiobunum vittatum)
Meinwald, J., Kluge, A. F., Carrel, J. E., Eisner, T.
The defensive secretion of the “daddy longlegs” Leiobunum vittatum was analyzed and found to contain the acyclic ketones 4-methylheptan-3-one and E-4,6-dimethyl-6-octen-3-one as its major organic...
Jones, T H, Meinwald, J, Hicks, K, Eisner, T
Analyses of the chief volatile constituents of the defensive secretions of three oplionids were carried out. Leiobunum nigripalpi produces three closely related C7 compounds:...
Gyrinidal: A Sesquiterpenoid Aldehyde from the Defensive Glands of Gyrinid Beetles*
Meinwald, J., Opheim, K., Eisner, T.
Three species of gyrinid beetles (Gyrinus ventralis, Dineutes hornii, and D. serrulatus) have been found to produce the nor-sesquiterpenoid aldehyde gyrinidal in the secretion of their pygidial...
Meinwald, J, Jones, T H, Eisner, T, Hicks, K
The defensive secretion of larvae of the chrysomelid beetle Plagiodera versicolora contains two unstable, volatile methylcyclopentanoid terpenes: a dialdehyde (chrysomelidial) isomeric with...