Cryptic Moths: Effects on Background Selections of Painting the Circumocular Scales

  title={Cryptic Moths: Effects on Background Selections of Painting the Circumocular Scales},
  author={Theodore D. Sargent},
  pages={100 - 101}
A dark moth (Catocala antinympha) and a light moth (Campaea perlata) rested on appropriate backgrounds in an experimental apparatus allowing a choice between black and white backgrounds. The selections remained unchanged when the circumocular scales of the moths were painted either black or white. These results suggest that selections of background by cryptic moths, with respect to background reflectance, are genetically fixed. Background selections by melanic forms in various species are… Expand

Topics from this paper

Background Selections of the Pale and Melanic Forms of the Cryptic Moth, Phigalia titea (Cramer)
KETTLEWELL1 demonstrated that the pale (typical) and melanic (carbonaria) forms of the peppered moth, Biston betularia L., tend to rest on white and black backgrounds respectively, when presentedExpand
Background selection by the peppered moth (Biston betularia Linn.): individual differences
Differences between family broods indicate that some genetic bias in background selection exists in dimorphically coloured, cryptic moths and the production of artificially selected lines with consistent but opposing preferences will allow us to investigate the co-evolution of pattern and behaviour. Expand
Experiments on resting site selection by nocturnal moths
Studies on the mechanism of background selection, and on background selection in polymorphic species, are reviewed. Expand
Behavioural adaptations of cryptic moths. III: Resting attitudes of two bark-like species, Melanophia Canadaria and Catocala ultronia
Two bark-like moth species were tested for resting attitude preferences in an experimental apparatus which allowed a choice between backgrounds having vertically or horizontally oriented surface irregularities, and two mechanisms for effecting an alignment of moth and background patterns are proposed. Expand
Further background‐choice experiments on cryptic Lepidoptera
Background choice experiments were performed using polymorphic night flying moths common in Britain and emerging at different times of the year using morphs of the same species to find the backgrounds most appropriate to their colouration. Expand
Industrial melanism and peppered moths (Biston betularia (L.))
The spread of melanic forms of the peppered moth (Biston betularia (L.)) over polluted areas of Britain from the mid-nineteenth century onwards, has become widely known and quoted as a classicalExpand
Evolution of resting behaviour in polymorphic industrial melanic moth species
The behaviour of individually marked melanic and typical forms of Allophyes oxyacanthae was followed in four successive tests in an apparatus comprising bark of three different reflectances and the variation in resting behaviour is linked to a ‘dark typical’ allele which, together with other loci, produces polygenic darkening of the normal phenotype. Expand
Visual Detection of Cryptic Prey by Blue Jays (Cyanocitta cristata)
Blue jays learned to respond differentially to the presence or absence of Catocala moths in slides, providing an objective measure of crypticity, useful for the study of visual detection of prey. Expand
Further experiments on resting site selection by the typical and melanic forms of the moth, Allophyes oxyacanthae (Caradrinidae)
The results of the two years' experiments indicate that it is necessary to postulate that, in addition to the pleiotropic effects of alleles at the melanic locus, another locus (or loci) is involved in the control of resting site selection. Expand
Progressive background in moths, and a quantitative measure of crypsis
A method is presented for quantitative estimation of the degree of crypsis of species seen by visual predators against known backgrounds based upon a comparison between transects taken across animal and background colour patterns, which is useful for studies of Crypsis as well as in sexual selection. Expand


Recognition of Appropriate Backgrounds by the Pale and Black Phases of Lepidoptera
It is shown that in the Manchester district between the years 1848 and 1898, the jet-black form of the peppered moth had an approximate 30 per cent advantage over pale lichen-like individuals, which were the only ones known there until the middle of the last century. Expand
Background Selections of Geometrid and Noctuid Moths
Several common moths, collected at night and placed in an experimental box, showed daytime selections of backgrounds which tended to match the reflectance of their forewings. In one case, twoExpand
A survey of the frequencies of Biston betularia (L.) (Lep.) and its melanic forms in Great Britain
A survey of the frequencies of Biston betularia (L.) (Lep.) and its melanic forms in Great Britain
With a GE recording spectrophotometer equipped with a Davidson and Hemmengdinger tristimulus integrator. All measurements were made with daylight illumination and pressed BaSOG as the white standard
    averaged 2.17oC below the 75-year average obtained at the University of Massachusetts observatory. May was the coldest since 1917, and the latest snow ever recorded fell on 25 May