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Radiosensitivity of Various Stages of Callosobruchus Chinensis L; Radiosensibilite du Callosobruchus Chinensis L. aux divers stades de son developpement; Chuvstvitel'nost' k oblucheniyu u razlichnykh stadij Callosobruchus Chinensis L.; Radiosensibilidad de las diversas fases de la metamorfosis del Callosobruchus Chinensis L.

Conference:

Abstract

The effects of irradiation on the eggs, larvae, pupae and adults of Callosobruchus chinensis L., a destructive pest of leguminous seeds, have been studied. Since the entire life-cycle except the egg and adult stages of this insect is passed in the seed itself, control by conventional means is very difficult. Insects were obtained from local grain shops and reared in .an incubator in the laboratory on moong (Phaseolus mungo L.) seeds at a temperature of 29{sup o}C {+-} 1{sup o}C and a humidity of 70-75%. Under these conditions the insect completed its life-cycle in 18-22 d. A 1-c iridium-192 source was used for initial experiments in irradiation. Later this was increased to 4 c. Exposures were made at very close range and the dose-rates were calculated on the basis of a measurement made at 50-cm distance with a Victoreen condenser r-meter. Eggs were irradiated at a distance of 0.5 cm from the source arid larvae, pupae and adults at 1.0 cm from the source, the respective dose-rates being 80 kr/h at 0.5 cm and 20 kr/h at 1 cm for a 4-c source. It was found that a dose of 15 krad gave 100% mortality in the case of eggs.  More>>
Authors:
Sayeed Quraishi, M.; Metin, M. [1] 
  1. Cento Institute of Nuclear Science, Teheran (Iran, Islamic Republic of)
Publication Date:
Sep 15, 1963
Product Type:
Conference
Resource Relation:
Conference: Symposium on the Use and Application of Radioisotopes and Radiation in the Control of Plant and Animal Insect Pests, Athens (Greece), 22-26 Apr 1963; Other Information: 3 tabs., 5 refs.; Related Information: In: Radiation and Radioisotopes Applied to Insects of Agricultural Importance. Proceedings of the Symposium on the Use and Application of Radioisotopes and Radiation in the Control of Plant and Animal Insect Pests| 526 p.
Subject:
60 APPLIED LIFE SCIENCES; ADULTS; DOSE RATES; EGGS; HUMIDITY; INSECTS; IRIDIUM 192; IRRADIATION; KRYPTON 80; LARVAE; LIFE CYCLE; MATING; MORTALITY; PEST ERADICATION; PHASEOLUS; PUPAE; RADIATION DOSES; RADIOSENSITIVITY; SEEDS
OSTI ID:
22100746
Research Organizations:
International Atomic Energy Agency, Vienna (Austria); Food and Agriculture Organization of the United Nations, Rome (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13R0306058794
Submitting Site:
INIS
Size:
page(s) 479-484
Announcement Date:
Jun 06, 2013

Conference:

Citation Formats

Sayeed Quraishi, M., and Metin, M. Radiosensitivity of Various Stages of Callosobruchus Chinensis L; Radiosensibilite du Callosobruchus Chinensis L. aux divers stades de son developpement; Chuvstvitel'nost' k oblucheniyu u razlichnykh stadij Callosobruchus Chinensis L.; Radiosensibilidad de las diversas fases de la metamorfosis del Callosobruchus Chinensis L.. IAEA: N. p., 1963. Web.
Sayeed Quraishi, M., & Metin, M. Radiosensitivity of Various Stages of Callosobruchus Chinensis L; Radiosensibilite du Callosobruchus Chinensis L. aux divers stades de son developpement; Chuvstvitel'nost' k oblucheniyu u razlichnykh stadij Callosobruchus Chinensis L.; Radiosensibilidad de las diversas fases de la metamorfosis del Callosobruchus Chinensis L.. IAEA.
Sayeed Quraishi, M., and Metin, M. 1963. "Radiosensitivity of Various Stages of Callosobruchus Chinensis L; Radiosensibilite du Callosobruchus Chinensis L. aux divers stades de son developpement; Chuvstvitel'nost' k oblucheniyu u razlichnykh stadij Callosobruchus Chinensis L.; Radiosensibilidad de las diversas fases de la metamorfosis del Callosobruchus Chinensis L." IAEA.
@misc{etde_22100746,
title = {Radiosensitivity of Various Stages of Callosobruchus Chinensis L; Radiosensibilite du Callosobruchus Chinensis L. aux divers stades de son developpement; Chuvstvitel'nost' k oblucheniyu u razlichnykh stadij Callosobruchus Chinensis L.; Radiosensibilidad de las diversas fases de la metamorfosis del Callosobruchus Chinensis L.}
author = {Sayeed Quraishi, M., and Metin, M.}
abstractNote = {The effects of irradiation on the eggs, larvae, pupae and adults of Callosobruchus chinensis L., a destructive pest of leguminous seeds, have been studied. Since the entire life-cycle except the egg and adult stages of this insect is passed in the seed itself, control by conventional means is very difficult. Insects were obtained from local grain shops and reared in .an incubator in the laboratory on moong (Phaseolus mungo L.) seeds at a temperature of 29{sup o}C {+-} 1{sup o}C and a humidity of 70-75%. Under these conditions the insect completed its life-cycle in 18-22 d. A 1-c iridium-192 source was used for initial experiments in irradiation. Later this was increased to 4 c. Exposures were made at very close range and the dose-rates were calculated on the basis of a measurement made at 50-cm distance with a Victoreen condenser r-meter. Eggs were irradiated at a distance of 0.5 cm from the source arid larvae, pupae and adults at 1.0 cm from the source, the respective dose-rates being 80 kr/h at 0.5 cm and 20 kr/h at 1 cm for a 4-c source. It was found that a dose of 15 krad gave 100% mortality in the case of eggs. Different doses below this level gave somewhat variable results and it is possible that there is a sensitive stage for a short period during the first 24 hours of development of the eggs. In the case of 8-day-old larvae 100% mortality was obtained with a dose of 20 000 rad. The pupae seem to be less radiosensitive than the eggs or larvae and doses of 47 000 rad were needed to give 100% mortality. Doses of 42 000 rad ''sterilized'' the males and females in the sense that, though mating took place after irradiation, the eggs produced when either of the parents had been irradiated with a dose of 42 000 rad did not hatch. Production of ''sterile'' eggs continued even when either or both parents had been exposed to doses of 67 000 rad - the highest dose tried. (author) [French] On a etudie les effets des rayonnements sur les oeufs, les larves, les pupes et les adultes du Callosobruchus chinensis L., insecte nuisible aux graines de legumineuses emmagasinees. Il est tres difficile de lutter contre cet insecte par les moyens classiques, du fait qu'il passe toute la periode larvaire et la pupation dans la graine elle-meme. Des insectes obtenus dans des graineteries locales ont ete eleves en laboratoire, dans un incubateur, sur des graines de mungo (Phaseolus mungo L.), a une temperature de 29{sup o}C {+-} l{sup o}C et un degre d'humidite de 70 a 75%. Dans ces conditions, le cycle vital de l'insecte est de 18 a 22 j. Pour les premieres experiences d'irradiation, on a utilise une source d'iridium-192 de 1 c. Son intensite a ensuite ete portee a 4 c. L'exposition a ete effectuee a une tres faible distance; le debit de dose a ete calcule d'apres une mesure faite a 50 cm avec un dosimetre a condensateur de Victoreen. Les oeufs a irradier ont ete places a 0,5 cm de la source et les larves, pupes et adultes a 1 cm, l'intensite de dose etant de 80 kr/h et de 20 kr/h, respectivement, avec la source de 4 c. Une dose de 15 000 krad a provoque une mortalite de 100% dans le cas des oeufs. Diverses doses de plus faible intensite ont donne des resultats quelque peu variables; il est possible qu'il existe un stade sensible pendant une breve periode des premieres 24 h du developpement des oeufs. Une dose de 20 krad a provoque une mortalite de 100% des larves agees de 8 j. Il semble que les pupes soient moins radiosensibles que les oeufs ou les larves: il a fallu des doses de 47krad pour obtenir une mortalite de 100%. Des doses de 42 krad ont provoque la sterilisation des males et des femelles, en ce sens que les oeufs produits apres l'irradiation de l'un des parents ne sont pas parvenus a eclosion. La ponte d'oeufs ''steriles'' a continue meme apres que l'un des parents ou les deux aient ete exposes a des doses de 67 krad, maximum applique dans ces experiences. (author) [Spanish] Los autores han estudiado los efectos de la irradiacion sobre huevos, larvas, ninfas e imagos del Callosobruchus chinensis L., insecto que ataca a las semillas de leguminosa almacenadas. Como todo el ciclo de desarrollo del insecto - exceptuando el huevecillo y las fases adultas - tiene lugar en el interior de la semilla, es muy dificil combatirlo por medios convencionales. Los insectos se recogieron en almacenes de granos y se cultivaron en una incubadora del laboratorio, con semillas de Phaseolus mungo L., a una temperatura de 29{sup o}C {+-} 1{sup o}C y una humedad de 70 a 75%. El ciclo de desarrollo del insecto duro de 18 a 22 d. Para los experimentos iniciales de irradiacion, se empleo una fuente de iridio-192 de 1 s cuya intensidad se aumento mas adelante a 4 c. Las irradiaciones se efectuaron a muy corta distancia y la intensidad de las dosis se calculo a base de una medicion efectuada a 50 cm de distancia con un contador Victoreen, de condensador, calibrado en roentgens. Los huevecillos se irradiaron a medio centimetro de la fuente, y las larvas, ninfas e imagos a un centimetro; la intensidad de la dosis con la fuente de 4 c fue de 80 kr/h en el primer caso y de 20 kr/h en elsegundo. Se pudo observar que con una dosis de 15 000 rad se obtenia una mortalidad del 100% entre los huevecillos. Con dosis inferiores se obtuvieron resultados variables, y es posible que durante un corto periodo de las primeras 24 h de desarrollo de los huevecillos haya una fase de mayor sensibilidad. Con larvas de ocho dias, la mortalidad total se obtuvo tras una dosis de 20 000 rad. Las ninfas parecen ser menos sensibles que los huevos y las larvas, y se precisaron dosis de 47 000 rad para alcanzar el mismo resultado. Una dosis de 42 000 rad ''esterilizaba'' a los machos y a las hembras en el sentido de que, aunque copularan despues de la irradiacion, los huevos producidos cuando uno cualquiera de los padres habia sido irradiado con esta dosis resultaban hueros. La produccion de huevos ''steriles'' continuo incluso cuando se expuso a uno o a ambos padres a dosis de 67 000 rad, que fue la mas intensa que emplearon los autores. (author) [Russian] Bylo izucheno vozdejstvie oblucheniya na yajtsa, lichinki, kukolki i vzroslye osobi Callosobruchus chinensis L . - vrednogo nasekomogo, porazhayushchego zapasy bobovykh kul'tur. Tak kak ves' zhiznennyj tsikl ehtogo nasekomogo, za isklyucheniem vremeni prebyvaniya v sostoyanii yajtsa i vzrosloj osobi, protekaet vnutri samogo boba, nablyudat' za ehtimi nasekomymi obychnymi sredstvami chrezvychajno trudno. Nasekomye byli vzyaty iz mestnykh zernovykh skladov i vyrashchivalis' v Laboratornom inkubatore na semenakh mungo (Phaseolus mungo L.) pri temperature v 29{sup o}C {+-} 1{sup o}C i pri vlazhnosti v 70 - 75%. V ehtikh usloviyakh nasekomye zavershali svoj zhiznenyj tsikl za 18 - 22 sutok. Dlya pervonachal'nykh ehksperimentov s oblucheniem byl ispol'zovan istochnik s iridiem-192 moshchnost'yu 1 kyuri. V dal'nejshem moshchnost' byla uvelichena do 4 kyuri. Obluchenie proizvodilos' na ochen' blizkom rasstoyanii, i dozy podschityvalis' na osnovanii izmerenij, sdelannykh na rasstoyanii 50 cm pri pomoshchi kondensatornogo dozimetra tipa Viktorien. Yajtsa obluchalis' na rasstoyanii 0,5 cm ot istochnika, a lichinki, kukolki i vzroslye osobi - na rasstoyanii 1,0 cm ot istochnika, prichem sootvetstvuyushchie dozy byli 80 000 rad/chas na rasstoyanii 0,5 cm i 20 000 rad/chas na rasstoyanii 1 cm dlya istochnika moshchnost'yu 4 kyuri. Bylo obnaruzheno, chto dlya yaits doza 15 000 rad davala 100-protsentnuyu smertnost'. Raznye dozy nizhe ehtogo urovnya davali dovol'no razlichnye rezul'taty, i predstavlyaetsya vozmozhnym, chto vo vremya pervykh 24 chasov razvitiya yaits imeetsya neprodolzhitel'naya chuvstvitel'naya stadiya. Dlya lichinok v vozraste 6 sutok 100-protsentnaya smertnost' nastupala pri doze 20 000 rad. Po-vidimomu, kukolki menee chuvstvitel'ny k oblucheniyu, chem yajtsa ili lichinki, i dlya dostizheniya 100-protsentnoj smertnosti byli neobkhodimy dozy v 47 000 rad. Dozy v 42 000 rad ''sterilizovali'' kak samtsov, tak i samok v tom smysle, chto khotya posle oblucheniya i proiskhodilo sparivanie, no iz otlozhennykh yaits potomstvo ne razvivalos', kogda odin iz roditelej podvergalsya oblucheniyu dozoj v 42 000 radov. Otkladyvanie ''sterilnykh'' yaits prodolzhalos' dazhe v tekh sluchayakh, kogda odin iz roditelej ili oni osa podvergalis' oblucheniyu dozoj v 67 000 rad, kotoraya byla naivysshej oprobovannoj dozoj. (author)}
place = {IAEA}
year = {1963}
month = {Sep}
}