(n.) A marine, bivalve mollusk, of the genus Teredo and allies, which burrows in wood. See Teredo.
(n.) Any bivalve mollusk (Saxicava, Lithodomus, etc.) which bores into limestone and similar substances.
(n.) One of the larvae of many species of insects, which penetrate trees, as the apple, peach, pine, etc. See Apple borer, under Apple.
(n.) The hagfish (Myxine).
Example Sentences:
(1) Changes in haemolymph juvenile hormone (JH) concentrations of larvae of the southwestern corn borer, Diatraea grandiosella, were used to estimate the activity of the corpora allata.
(2) 1964.-A highly proteolytic bacterial species was isolated from the alimentary canal of the marine borer, Limnoria.
(3) European corn borer phosphodiesterase is highly activated by (NH4)2SO4 and moderately activated by NH4C1 (pH 7.6, 33 degrees).
(4) Worse, pests like the berry borer beetle and leaf rust fungus are flourishing as the world warms.
(5) It utilizes the clasper from male pharate adult European corn borers and measures the incorporation of [14C]N-acetylglucosamine.
(6) The results obtained with a borer electrode, designed by the authors, are reported (130 cases).
(7) The major quantitative characteristics of chromosomal Q-HR variability were shown to be very similar in oil-borers and natives, and this is considered to be the result of specific selection of individuals according to the amount of Q-HRs in their genome.
(8) The acetone precipitation procedure, introduced by Gluck, L., Kulovich, M.V., Borer, R.C.
(9) Results of field physiologic and hygienic investigations of borer's work schedule during the subterranean gold extraction in the Chukot Range [correction of Chukotka] are presented.
(10) The E and Z pheromonal strains of the European corn borer, Ostrinia nubilalis, are characterized by female production of and male preference for opposite blends of (E)-11-and (Z)-11-tetradecenyl acetate.
(11) Spores of two microsporidia, Nosema pyrausta (from the European corn borer, Ostrinia nubilalis) and N. furnacalis (from the Asian corn borer, O. furnacalis) were harvested from laboratory-reared O. nubilalis caterpillars and purified by centrifugation through Percoll.
(12) Dithyreanitrile inhibits feeding of fall armyworm (Spodoptera frugiperda) and European corn borer (Ostrinia nubilalis) larvae.
(13) Both compounds are effective antifeedants when incorporated into artificial diets and fed to fall armyworm (Spodoptera frugiperda) or European corn borer (Ostrina nubilalis) larvae.
(14) Ultrastructural examination of diapause and nondiapause larval brains of the European corn borer disclosed anatomical differences that may be related to the insect's "blood-barrier".
(15) In in vitro tests caffeine (0.008 M) and theophylline (0.008 M) inhibit phosphodiesterase more effectively in European corn borer larvae than in crayfish, ovine, bovine, or rat tissue.
(16) An adduct of Kepone, Kelevan, is now distributed by Spiess and Sohn, Chemische Fabrik, Germany, with an as yet unknown manufacturer, for control of the Colorado potato beetle in Eastern Europe and Ireland, and for control of the banana root borer in the cameroons, Caribbean, and South America.
(17) The pest, berry borer beetle, was unknown until about 2000 in Ethopia, Uganda, Burundi and Rwanda, as it preferred the warmer temperatures at lower altitudes.
(18) (E,Z)-3,13-octadecadien-1-ol acetate, and (Z,Z)-3,13-octadecadien-1-ol acetate, isolated from the female lesser peachtree borer, Synanthedon pictipes (Grote and Robinson), and the female peachtree borer, Sanninoidea exitiosa (Say), respectively, strongly attract the respective males of these species in field bioassays.
(20) Dr David Schudel of Keith Borer Consultants said: "The new GPS devices are bulkier and protrude from the leg, lending themselves open to being snagged, twisted or rotated away from the leg, and are generally likely to be subject to greater forces in normal wear than the old style tags."
Larva
Definition:
(n.) Any young insect from the time that it hatches from the egg until it becomes a pupa, or chrysalis. During this time it usually molts several times, and may change its form or color each time. The larvae of many insects are much like the adults in form and habits, but have no trace of wings, the rudimentary wings appearing only in the pupa stage. In other groups of insects the larvae are totally unlike the parents in structure and habits, and are called caterpillars, grubs, maggots, etc.
(n.) The early, immature form of any animal when more or less of a metamorphosis takes place, before the assumption of the mature shape.
Example Sentences:
(1) Larvae from fresh water eggs, cultured in fresh water and 'normal' laboratory cultures reached 50% infectivity in 3-5 days, losing potential infectivity in 11-15 days post-hatching.
(2) After treatment of larvae of instar 1 at preimago stages about 77% of the insects died.
(3) A total of 3,532 females of various engorged weights was collected from all calves, resulting in a mean female tick yield of 1.78% based on the number of larvae used for all infestations.
(4) Similar concentrations of free ecdysteroids were recorded in adults and larvae, although the two life cycle stages differed in their ratio of ecdysone: 20-hydroxyecdysone.
(5) Larvae of both mutants also excrete 3H-3-hydroxykynurenine and 3H-kynurenine rapidly, which probably accounts for the normal levels of kynurenine during larval life.
(6) Guinea pigs exposed to 200 and 400 H. truncatum larvae elicited the greatest change in feeding efficiency during the fourth infestation.
(7) In cultures of medium ML-15 containing a feeder layer of Dog Sarcoma (DS) cells larvae successfully moulted and showed a small but significant increase in length.
(8) The test is based on the ability of larvae to freely migrate through selected mesh sizes of nylon sieves and the reduced ability of larvae to migrate after preincubation with, and in the presence of, substances that inhibit or reduce larval motility.
(9) This study provides evidence for a maternal yolk factor associated with increased tolerance and resistance of larvae to copper.
(10) Human activity not only increases risk, but influences control by killing mosquito larvae, killing adult mosquitos or preventing mosquitos from feeding.
(11) Infected ticks were reared from larvae feeding on each of 11 rabbits taken from the same site.
(12) Histopathology examination from the margin of the ulcerative area confirmed the diagnosis of basal cell carcinoma, which was infested secondarily with larvae of flies.
(13) Tolypocladium tundrense and T. terricola UV-irradiated conidia exhibited acute toxicity to Aedes aegypti larvae in concentrations of 5 x 10(5) and 5 x 10(6) ml-1, respectively.
(14) These products, as well as several synthetic intermediates, were evaluated for antifilarial activity against Molinema dessetae either in vivo in its natural host, the rodent Proechimys oris, or in vitro by a new test using cultures of the infective larvae.
(15) However, mosquitoes infected with more than 4 larvae became more active than uninfected mosquitoes 8 days after infection.
(16) Metabolism of carbaryl by the fat body is affected by the age of the larva, the pH of the incubation medium, and the concentration of magnesium chloride in the incubation medium.
(17) The mutant larvae are apparently normal, but they harbor serious defects in the organs containing proliferating cells of both somatic and germ line origins.
(18) Changes in haemolymph juvenile hormone (JH) concentrations of larvae of the southwestern corn borer, Diatraea grandiosella, were used to estimate the activity of the corpora allata.
(19) Statistical analysis has shown the following: a) the growth inhibition, which is especially distinct in autumn-spring generation, takes place in the Ist instar larvae 1.76-2.20 mm long inhabiting the walls of the nasal cavity and concha (their average body length at hatching is 1.08 plus or minus 0.004 mm); the inhibition is associated with interpopulation relations and apparently does not depend on the date of its beginning and can last from 6 to 7 months; c) after the growth resumption the development continues uninterruptedly up to the moulting; the inhibition is also possible at the beginning of the 2nd instar and then the development proceeds without any intervals up to the complete maturation of larvae.
(20) It is present throughout development and is as abundant in embryos as in larvae and adult flies.