Biological data and life table results indicate that C. sanguinea can be a valuable natural enemy of A. craccivora due to its fast ⦠/Width 250 xýñÍèoðlßGß)
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§ñk´¼*Üíg4í5L»Dÿ ¿ %ªÌLþLùG4ÛWè¾ÌKjzsð.³´æÔ48¸½ÇW³O¤Äô:2§à÷%¶×p²9vcð02èð=øzr²=ÌWwä¦yö c¹myÅR1WÔÓÈ)Ð# Cultures were started from parthenogenetic viviparous Life table and population parameters of cowpea aphid, Aphis craccivora Koch (Homoptera: Aphididae) on five cowpea Vigna unguiculata (L. /Subtype /Image Life cycle. - Nymphs dull greyish, lightly powdered .. No specific permit was required for the described collection. The aphids Aphis gossypii Glover (Ramalho et al. Aphis craccivora is a vector of several viruses including broad bean mosaic virus, cucumber mosaic virus and groundnut rosette virus. �� � w !1AQaq"2�B���� #3R�br� account their life cycle stage (nymphs and adults). endobj [/Pattern /DeviceRGB] These insects directly damage the plants by sucking the phloem, and indirectly by virus transmission and excretion of excess carbohydrates from their ⦠A. craccivora is a common aphid species with agricultural importance in the United States. The main species of aphids attacking beans are Aphis fabae Scopoli and Aphis craccivora Koch. (Hemiptera: Aphididae), is one of the most common and well-known insect pests throughout the world (Minks and Harrewijn 1987, Blackman and Eastop 2006, Sadeghi et al. In general, this pest causes severe damage to beans in warm weather, especially in medium ⦠Their life cycle begins with the hatching of eggs on a host plant at the beginning of spring. Aphids have soft pear-shaped bodies with long legs and antennae and may be green, yellow, brown, red, or black depending on the species and the plants they feed on. /ColorSpace /DeviceRGB It is important on food legumes, peanut (groundnut) and cowpea, in particular, but also on French beans (Phaseolus species) mungbean (and other Vigna species), pigeon pea, chickpea, alfalfa and several others. /Producer (�� Q t 4 . GRDC. ���� JFIF ` ` �� C The insects were raised on individualized seedlings in an average temperature of 28 °C, at 70 % relative humidity during a photoperiod of ⦠This PDF is available to Subscribers Only. The life cycle in Utsunomiya, Tochigi Pref., Honshu was monoecious holocyclic on I. pseudo-tinctoria, and alate males and oviparae were produced by apterous sexuparae. /CA 1.0 North-Western Journal of Zoology, 8(1): 172-180. 3 0 obj 2010. The objective of this work was to evaluate the effect of different genotypes of lima bean on the biology of A. craccivora and to identify possible sources of resistance to aphids under laboratory conditions. )), under laboratory conditions. 2012) and Aphis craccivora Koch (Hemiptera: Heteroptera: Aphididae) (Moraes and Ramalho 1980) are serious crop pests in Brazil. Feeding potential and foraging behaviour are two important factors which determine the predatorâs efficiency of managing prey. Box: 38135-567 JALIL HADJI-ZADEH & AHAD SAHRAGARD Faculty of Agriculture, ⦠Aphis craccivora Koch, 1854, commonly known as cowpea aphid or black legume aphid, is distributed worldwide, but particularly common in warm temperate and tropical ⦠This research describes the population and biological parameters of the black aphid (Aphis craccivora Koch) on cowpea bean (Vigna unguiculata (L. Worldwide in distribution, but particularly common in warm temperate and tropical regions. endobj Introduction. C'est aussi un insecte vecteur de différents phytovirus. ��q��GAڤ��*�?��A��@3_.�E�D����X���Q��DO�2f���G�+jԎ>U��a�|��l۸�Y36jÏ��*����� It is a very important poly-phagous pest, feeding on over 80 plant families ⦠endobj The predator was reared on its preys (A. gossypii or A. craccivora) under similar conditions to those used to rear aphids. Thermal requirements, life expectancy and fertility tables of Aphis craccivora (Hemiptera: Aphididae) in Vigna unguiculata (Fabales: Fabaceae) under laboratory conditions. Functional response of Exochomus nigromaculatus (Col.: Coccinellidae) to different densities of Aphis nerii and Aphis craccivora ALIREZA NAZARI Faculty of Agriculture, Arak Islamic Azad University Daneshgah Ave. Arak, Iran. - It is a polyphagous species, with a marked ⦠Life cycle: In the Middle East the cowpea aphid reproduces by parthenogenesis the year around and no sexual forms have so far been found. In addition to directly sucking plant sap, it can also cause fungal diseases and acts as a vector for various plant viruses such as cowpea mosaic virus ( 15 ) and peanut stripe virus ( 16 ). /Creator (�� w k h t m l t o p d f 0 . 6 0 obj Predator-prey system of Cheilomenes sexmaculata (Fabricius) and Aphis gossypii Glover was evaluated to find out the predation efficiency. 86, Issue. Biology teaching resources by D G Mackean Common names. 4 0 obj Marcroft S, Potter T and Jones R. 2011. A.fabae is a small-sized dull-black insect (1.5â2 mm), sometimes with a segmented abdomen that is marked with a powdery secretion. stream Accompanied by detailed biological drawings. P.O. $4�%�&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz�������������������������������������������������������������������������� ? Aphis craccivora a polyphagous aphid species with a preference for Fabaceae. It had four nymphal instars on cowpeas in the laboratory. and causes tissue death, decay of the buttons and base of the stem, and stains in the flowers. �nmZ�1d�g��*�x��_��UU�75,�[���!V���W�N6����������_��T���� |���8�d*���)v���)� &�k&H���� |�P�����ȥǵ(_j��?u�W4�>MR����/2{�$UL����O�7�����Ǎ/�6:z. The presenc⦠5) Olfactometer experiments were conducted with apterae and alatae of the cowpea aphid, Aphis craccivora, Koch (Hom. Identification and characterization of resistance to cowpea aphid (Aphis craccivora Koch) in Medicago truncatula. As part of an extensive and systematic programme to find genetic sources of resistance to Aphis craccivora, a major pest of cowpea, Vigna unguiculata, a total of 181 accessions from the germpiasm collection at the International Institute of Tropical Agriculture were screened in glasshouse tests using a simple visual damage ⦠BIOASSAYS Effects of cotton, cowpea and cotton intercropped with cowpea systems on aphid (A. gossypii and A. craccivora) populations The current study ⦠and Araya (2012) described the general biology for the genus Allograpta by comparing the life cycle of several species of this genus, including A. exotica. �� � } !1AQa"q2���#B��R��$3br� /Filter /DCTDecode /SA true Cowpea aphid, Black legume aphid, Groundnut aphid.. Distribution. /SMask /None>> /BitsPerComponent 8 >> However, financial losses are not well ⦠Walp. The longest setae on antennal segment III and abdominal tergite VIII of A. indigoferae were longer than those of A. craccivora. 8 . 7) comparing the life cycle of several species of this genus, including A. exotica. Average time duration taken for the consumption of different life forms of A. craccivora by M. sexmaculatus in an experimental arena (140cm 2 ) under laboratory conditions at 27°C, and 80% RH. In the former USSR, Aphis craccivora overwinters as eggs, often at the base of young alfalfa plants, but is also reported to overwinter on Acacia, camelthorn and perennial weeds. Aphis craccivora (aussi appelé puceron noir de la luzerne, puceron de la gourgane ou puceron oriental du pois) est une espèce d'insectes hémiptères de la famille des Aphididae.. Ce puceron polyphage est un ravageur des Légumineuses principalement. /Title (�� C o w p e a a p h i d \( 3 5 6 \)) In this report, we examine how the aphid Aphis craccivora Koch infests Catasetum sp. 1 0 obj A few species appear waxy or woolly due to the secretion of a waxy white or gray substance over their body surface. J. Pest. Sammour E.A., El-Hawary F.M.A. Aphis craccivora colony was maintained on seedlings of fava bean in a growth chamber at 23°C with a photoperiod of 12: 12 (L: D) and 50% relative humidity. Aphis craccivora is one of the most common aphids in the tropics. /Length 7 0 R /AIS false View Article Abstract & Purchase Options. BMC Plant Biology 12: 101. Reproduction, feeding, damage to plants, and control of damage. << Comparative study on the efficacy of neemix and basil oil formulations on the cowpea aphid Aphis craccivora ⦠Description - Adult females are black, the apterae dorsally shiny; body rarely longer than 2mm. /CreationDate (D:20200812160413+10'00') Morphometric discrimination of black legume aphid, Aphis craccivora Koch (Hemiptera: Aphididae), populations associated with diff erent host plants. Aphis craccivora is a worldwide insect pest that causes harm to many crops such as cowpea, peanut and pea (13, 14). :Aphidoidea).The occurrence of density dependent related pheromones and odour response to their host plant Vigna unguiculata was studied. & Abdel-Aziz N.F., 2011. The total nymphal periods averaged 5.6, 5.1, 5.15 and 4.86 days in May-June, August-September, October-November and March-April, respectively. << The aphids, either apterous or alate, are always parthenogenetic viviparous females. Canola diseases: The back pocket guide. Sci., 83, 9â 14. ¹S«ÖEѾDô ÁåsçÌZøu°p°«pão¢$}z Apterae responded with positive anemotaxis to air ⦠The durations of the total life cycle during the corresponding periods were 11.07, 11.15, 10.79 and 10.42 days (Patel and ⦠The seasonal distribution of these crops is such that suitable cultivated hosts are available throughout the year and the life-cycle is carried on by viviparous apterae. Aphis craccivora Koch, 1854, commonly known as cowpea aphid or black legume aphid, is distributed worldwide, but particularly common in warm temperate and tropical regions. /ca 1.0 Lawrence L. 2009. The cowpea aphid has a ⦠ð&eH*VÓf14Ôä¦å% \&ÀjØXmï-5O]lób[û86/;ø²A¶n¢uÆЩiÜnç6föèÍ9¬ /SM 0.02 All of them get developed into wingless females, that devour the host plant for nourishment. 2009).Aphids are important piercing-sucking insects that during feeding cause significant loss of a ⦠Farming Ahead 215: 49 -51. Feeding potential was observed for different stages of C. ⦠>> In most places reproduction is entirely parthenogenetic with no sexual stage in the life cycle, but sexual morphs have been recorded from Germany and India. Aphids ( Aphis craccivora Koch) are an important vegetative stage pest of cowpea in Africa. %PDF-1.4 The eggs hatch in early spring and the first larvae are known as fundatrix (stem mothers) and feed at first on alfalfa. Walp.) Most species have a pair of tubelike structures called cornicles projecting backward out of the hind end of their body. /Height 167 Arquivos do Instituto Biológico, Vol. Kong, A. craccivora is a pest of Vigna sesquipedalis, Phaseolus vulgaris and other Leguminosae. << /Type /ExtGState Takeda et al (1980) demonstrated that the frequency of honeydew excretion was higher, and the interval between honeydew droppings shorter, in ant attende⦠Females Reproduce Asexually, Creating Clones The cowpea aphid (Aphis craccivora) can be an important pest on lima bean (Phaseolus lunatus L.). Taking the fight to aphids. /Type /XObject varieties. The life-cycle and behaviour of aphids. Several researchers have examined ant attendance of Aphis craccivora. and MilivojeviÄ, J.M. NikoliÄ, M.D. %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������� When an aphid attack occurs, their ability to rapidly multiply and spread can cause major disruptions to disruptions to parts of the plantâs life cycle. N Save Nature to Survive 5(3) : 491-493, 2010 EVALUATION OF THE CONSUMPTION RATES OF DOMINANT COCCINELLID PREDATORS ON APHIDS IN NORTH- EAST BIHAR A. K. PRABHAKAR AND S. P. ROY* Department of Zoology, T. M. Bhagalpur University, Bhagalpur â 812 007 E-mail: amit.zoology@yahoo.co.in KEY WORDS ⦠{§s5jûï£ÈõH8knñó§øµT ëªÝ^þÚªËM~®#ðn³Î"búµ¢G0Ì}ÝÀ_SìѱÇ1Xëe1 GNE¡ÈÒ@p¢û Ç["ÔëøÛaëÈ¥cIplÃÁëýü6
ÃÏÄà)â³¥ßδ1¶`³¹¡Øì¶{\©. Biology - It lives throughout the year without producing sexual forms. The populations of A. craccivora increase in spring and decline during summer. The evolution of aphid life ⦠The cowpea aphid, Aphis craccivora Koch. 1 2 . The females are attracted to green plants and seem to distinguish between the odor of â¦
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