Factors influencing the acceptability of energy policies: A test of VBN theory

This paper examines factors influencing the acceptability of energy policies aimed to reduce the emission of CO₂ by households. More specifically, it is studied to what extent the value–belief–norm theory of environmentalism (VBN theory; Stern, [(2000). Toward a coherent theory of environmentally significant behavior. Journal of Social Issues, 56(3), 407–424.]) is successful in explaining acceptability judgements. In contrast to previous studies, we test the full VBN theory. A questionnaire study was conducted among 112 Dutch respondents. Results confirmed the causal order of the variables in VBN theory, moving from relative stable general values to beliefs about human–environment relations, which in turn affect behaviour specific beliefs and norms, and acceptability judgements, respectively. As expected, all variables were significantly related to the next variable in the causal chain. Biospheric values were also significantly related to feelings of moral obligation to reduce household energy consumption when intermediate variables were controlled for. Furthermore, as hypothesized, personal norms mediated the relationship between AR and acceptability judgements, AR beliefs mediated the relationship between AC beliefs and personal norms, AC beliefs mediated the relationship between NEP and AR beliefs, and NEP mediated the relationship between values and AC beliefs.     

Behavioral and electrophysiological responses of the emerald ash borer, Agrilus planipennis, to induced volatiles of Manchurian ash, Fraxinus mandshurica

Summary. We investigated the volatile emissions of Manchurian ash seedlings, Fraxinus mandshurica, in response to feeding by the emerald ash borer, Agrilus planipennis, and to exogenous application of methyl jasmonate (MeJA). Feeding damage by adult A. planipennis and MeJA treatment increased volatile emissions compared to unexposed controls. Although the same compounds were emitted from plants damaged by beetles and treated with MeJA, quantitative differences were found in the amounts of emissions for individual compounds. Adult virgin female A. planipennis were similarly attracted to volatiles from plants damaged by beetles and those treated with MeJA in olfactometer bioassays; males did not respond significantly to the same volatiles. Coupled gas chromatographic-electroantennogram detection (GC-EAD) revealed at least 16 antennally-active compounds from F. mandshurica, including: hexanal, (E)-2-hexenal, (Z)-3-hexen-1-ol, 3-methyl-butylaldoxime, 2-methyl-butylaldoxime, (Z)-3-hexen-1-yl acetate, hexyl acetate, (E)-β-ocimene, linalool, 4,8-dimethyl-1,3,7-nonatriene, and E,E-α-farnesene. Electroantennogram (EAG) dose–response curves using synthetic compounds revealed that females had a stronger EAG response to linalool than males; and male responses were greater to: hexanal, (E)-2-hexenal, (Z)-3-hexen-1-ol, 3-methyl-butylaldoxime, 2-methyl-butylaldoxime, and hexyl acetate. These results suggest that females may use induced volatiles in long-range host finding, while their role for males is unclear. If attraction of females to these volatiles in an olfactometer is upheld by field experiments, host plant volatiles may find practical application in detection and monitoring of A. planipennis populations.     

Brood size and fitness in Nicrophorus vespilloides (Coleoptera: Silphidae)

Summary Using a laboratory population of the burying beetle Nicrophorus vespilloides (Coleoptera: Silphidae) the effects of body size on fighting ability and reproductive capacity were studied. The outcome of fights for corpses was found to depend on body size and was not related to order of arrival at a corpse. The size of a single clutche on a large corpse and the total of several clutches on a sequence of corpses increased with increasing female size. Larval weight and subsequent adult size for larvae raised on 10 g and 30 g mice were compared. Broods are culled on the smaller mice and light larvae eclose as relatively large adults for their weight; however larvae and adults from small corpses were still lighter and smaller than larvae and adults from 30 g corpses.     

Polymorphic color vision in white-faced capuchins (Cebus capucinus): Is there foraging niche divergence among phenotypes?

Many species of platyrrhine primates are characterised by sex-linked color vision polymorphism. This presents an opportunity to study the biology and ecology of individuals with different phenotypes living in the same group. Several evolutionary processes could maintain polymorphic genes in populations. In this study, we evaluate the hypothesis that foraging niche divergence among monkeys explains the presence of multiple color vision phenotypes. Specifically, we test whether dichromats and trichromats differ in foraging time devoted to cryptic vs brightly colored resources. We did not find any differences in foraging time spent on different food types by dichromatic and trichromatic monkeys in two groups of white-faced capuchins (Cebus capucinus) living in a tropical dry forest. We conclude that in so far as these variables are concerned, niche divergence does not likely explain color vision polymorphism in our study population.     

Identification of duchenne muscular dystrophy genomic probe P20 constant Taq1 fragment corresponding to the EcoRV and Msp1 polymorphisms

The majority of Duchenne and Becker muscular dystrophy cases are caused by deletions observable in Southern blots with cDNA probes for the gene. When the deletion includes polymorphic probes, they may be used to determine carrier status by deletion segregation analysis: non-inheritance of parental alleles, or heterozygosity. The polymorphic genomic probe P20 is deleted in a large percentage of probands. P20 hybridizes with two constant fragments of 6.7 and 0.8 kb in Taql digests. In a number of probands, only the larger P20 Taq1 fragment is deleted. This study demonstrates that this fragment corresponds with the polymorphic EcoRV and Mspl fragments of P20. Families in which the upper Taql fragment is deleted may be screened for carrier status using non-inheritance of parental alleles or heterozygosity of P20 in EcoRV or Mspl digests.     

National estimates of U.S. residential fire-related injuries: An improved procedure

This study compared fire-related injuries from two ongoing data systems to determine how to combine them to provide improved estimates of U.S. residential fire-related injuries. National estimates and characteristics of patients treated in hospital emergency rooms for fire-related injuries were compared with injuries in a database of fires attended by the fire service. National estimates, age, and diagnosis distributions of injuries seen by both a hospital and the fire service were very similar in the two systems, indicating that the systems overlapped for this segment of injuries. Each system also contained a segment of fire-related injuries that was not included in the other. Combining the overlapping segment of injuries with segments that did not overlap resulted in an estimate of 45,000–47,000 U.S. fire-related injuries, the most com-prehensive estimate of U.S. residential fire-related injuries available to date.