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The sequence, organization, and evolution of the Locusta migratoria mitochondrial genome
The sequencing of the cloned Locusta migratoria mitochondrial genome has been completed. The sequence is 15,722 by in length and contains 75.3% A+T, the lowest value in any of the five insect… Expand
Inferences about orthopteroid phylogeny and molecular evolution from small subunit nuclear ribosomal DNA sequences
We determined DNA sequences of SSU rRNA genes in twenty‐nine polyneopteran insect species and aligned these with homologues from eight other insects. In a phylogenetic analysis we recovered the… Expand
The Variable Coloration of the Acridoid Grasshoppers
- C. Rowell
Publisher Summary Coloration includes both color, which describes the reflectance of the pigments of a given area, and pattern, which describes the distribution of pigments. Variable coloration in… Expand
Combined molecular phylogenetic analysis of the Orthoptera (Arthropoda, Insecta) and implications for their higher systematics.
A phylogenetic analysis of mitochondrial and nuclear rDNA sequences from species of all the superfamilies of the insect order Orthoptera (grasshoppers, crickets, and relatives) confirmed that… Expand
The phylogeny of the Caelifera (Insecta, Orthoptera) as deduced from mtrRNA gene sequences.
Fragments of both mitochondrial ribosomal RNA genes of 32 caeliferan taxa (representing six of the seven superfamilies) and six outgroup Orthopteroids were sequenced. The combined alignment length… Expand
The effectiveness of mitochondrial rRNA gene sequences for the reconstruction of the phylogeny of an insect order (Orthoptera).
We investigated the value of mitochondrial rRNA sequences for analyzing pre-Cainozoic divergence events in insects. Using small subunit and large subunit rRNA sequences from 38 orthopteroid species,… Expand
Molecular phylogenetic analysis of the Pneumoroidea (Orthoptera, Caelifera): molecular data resolve morphological character conflicts in the basal acridomorpha.
A key transition in the evolution of the insect suborder Caelifera (Orthoptera; Insecta) was from predominantly non-angiosperm-feeding basal lineages to the modern acridomorph fauna (grasshoppers and… Expand
Displacement grooming in the chaffinch
- C. Rowell
Abstract An attempt is made to explain displacement grooming in approach-avoidance conflict situations on the assumption that grooming is a response to peripheral stimulation. Local and general… Expand
The Anatomy of a Locust Visual Interneurone; the Descending Contralateral Movement Detector
1. The DCMD neurone is physiologically well-known and runs from the brain to the metathoracic ganglion. It responds to novel movement of small contrasting objects in the visual field and synapses on… Expand
Variable Responsiveness of a Visual Interneurone in the Free-Moving Locust, and its Relation to Behaviour and Arousal
- C. Rowell
- 1 December 1971
1. Recorded from a dissected immobilized animal, or from an unrestrained animal which is quiescent, the descending contralateral movement detector (DCMD) neurone shows an exponential decremental… Expand