(n.) Any one of numerous species of snout beetles, or Rhynchophora, in which the head is elongated and usually curved downward. Many of the species are very injurious to cultivated plants. The larvae of some of the species live in nuts, fruit, and grain by eating out the interior, as the plum weevil, or curculio, the nut weevils, and the grain weevil (see under Plum, Nut, and Grain). The larvae of other species bore under the bark and into the pith of trees and various other plants, as the pine weevils (see under Pine). See also Pea weevil, Rice weevil, Seed weevil, under Pea, Rice, and Seed.
Example Sentences:
(1) Expression of heat shock proteins (hsp) in the BRL-AG-3C cell line from the cotton boll weevil was examined.
(2) The pH optima using [3H]casein as substrate were about pH 6.8 for the rice weevil and pH 5.2 for the red flour beetle.
(3) Boll weevil (Anthonomus grandis) eggs contain two yolk proteins, YP47 and YP160.
(4) The latter study indicated the presence of an oviposition marker, a new kind of pheromone, which was derived from the weevil and was lipid in nature, and suggested its possible use as an oviposition inhibitor.
(5) Polyacrylamide gel electrophoresis was used to examine gut, Malpighian tube, fat-body, testes, and ovarioles tissues of the adult cotton boll weevil, Anthonomus grandis Boh.
(6) The first are called vitellogenins and are found in frog, chicken, nematode, fish, and some insects such as the boll weevil.
(7) A compound responsible for the stimulation of oogenesis observed after copulation is present in the spermatophores produced by the male accessory glands of the bean weevil Acanthoscelides obtectus.
(8) The esterases of the cotton boll weevil were separated by polyacrylamide gel electrophoresis into four major regions.
(9) Moreover, the six introns in the boll weevil vitellogenin gene interrupt the coding region at positions closely or exactly corresponding to a subset of the positions of the 34 vertebrate vitellogenin introns, further supporting the argument for a common evolutionary relationship.
(10) Protein sequence similarities including Cys clusters conserved between boll weevil vitellogenin and Xenopus laevis A2 or Caenorhabditis elegans vit-5 vitellogenins indicated that the boll weevil protein is a member of the ancient nematode-vertebrate vitellogenin family.
(11) Esterase II was separated, using gel electrophoresis, from the frass of the cotton boll weevil, allowing genotyping of the individual weevil.
(12) These cDNAs were used to probe a genomic library, and two overlapping genomic clones were obtained that span the boll weevil vitellogenin gene.
(13) Electrophoresis of midgut extracts from the rice weevil, Sitophilus oryzae, and the red flour beetle, Tribolium castaneum, in polyacrylamide gels containing sodium dodecyl sulfate and gelatin revealed there was one major proteinase (apparent molecular mass = 40,000) in the rice weevil and two major proteinases (apparent molecular masses = 20,000 and 17,000) in the red flour beetle.
(14) The cationic lipid preparation Lipofectin was found to be very efficient at transfecting the boll weevil cells.
(15) As part of a program to identify as many as possible of the components of the pecan weevil, Curculio caryae (Horn), the hydrocarbons from males, females, and larvae were isolated by solvent extraction and column chromatography and subjected to gas lipuid chromatography-mass spectrometry analysis.
(16) A coleopteran cell line (AGE) derived from the cotton boll weevil Anthonomus grandis supported replication of Autographa californica multiple nuclear polyhedrosis virus (AcMNPV).
(17) This study was performed in order to investigate the production of H2O2 by mitochondria isolated from granary weevil (Sitophilus granarius) and mouse liver on exposure to PH3.
(18) To study the role of the potential insect allergens, extracts were prepared from whole body and a grain dust of the rice and grain weevil (Sitophilus granarius).
(19) A biologically active metabolite was found in crude extracts of an unidentified species of Phomopsis isolated from weevil-damaged pecans.
(20) There are no significant differences between the hydrocarbons of the male and female pecan weevils.