Zobrazeno 1 - 10
of 33
pro vyhledávání: '"R L, Blackman"'
Autor:
Sunil, Joshi, R L, Blackman
Publikováno v:
Zootaxa. 4363(4)
A new species of the genus Kaochiaoja Tao 1963, K. sikkimensis sp. n., was collected on Phyllostachys sp. (Poaceae) from Upper Tadong area of Gangtok, East Sikkim, India. Apterous and alate viviparae of this species are described, illustrated and dis
Autor:
H. Takada, R. L. Blackman
Publikováno v:
Journal of Entomology Series A, General Entomology. 50:147-156
Populations of M.persicae from glasshouses in Britain were found to have a structurally heterozygous chromosome complement. Biometric data from somatic metaphase chromosomes, and the pairing configurations of chromosomes at spermatocyte meiosis, indi
Publikováno v:
EPPO Bulletin. 25:337-341
A pine woolly aphid of the genus Pineus was inadvertently introduced to Zimbabwe in 1962, and now damages plantations of exotic pines in eight countries of eastern and southern Africa. Identification of the species and its area of origin were needed
Autor:
R. L. Blackman
Publikováno v:
Bulletin of entomological research. 60(4)
In laboratory experiments, the responses to short photoperiod (10 h) of clones ofMyzus persicae(Sulz.) established from random samples of summer populations in southern England were generally stable and characteristic for each clone, and were of four
Autor:
J M, Spence, R L, Blackman
Publikováno v:
Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology. 6(3)
In situ hybridization was used to label the ends of the X chromosomes of two aphid species, Myzus persicae and Amphorophora tuberculata, in order to study the peculiar behaviour and orientation of the univalent X in aphid spermatogenesis. Anaphase I
Autor:
R. L. Blackman, Victor F. Eastop
Aphids are well-known as pests of agriculture, horticulture and forestry, but they are also one of the most biologically interesting groups of plant-feeding insects, and thus have attracted the attention of biologists in many research fields such as
Autor:
R. L. Blackman
Publikováno v:
Bulletin of Entomological Research. 81:362-362
Autor:
R. L. Blackman
Publikováno v:
Systematic Entomology. 2:1-8
Aphids formerly regarded as Euceraphis punctipennis (Zetterstedt) are distinguished as two species, E.punctipennis and E.betulae (Koch), on the basis of cytological and morphological differences. E.punctipennis is primarily associated with Betula pub
Autor:
R. L. Blackman
Publikováno v:
Bulletin of Entomological Research. 63:595-607
Life-cycle variation, involving alternative methods of overwintering (holocycly and anholocycly), is found in many important pest aphids, and may have considerable ecological, genetic and economic significance. The occurrence of life-cycle variation