Biological Performance of Menochilus sexmaculatus Fabricius (Coleoptera: Coccinellidae) Upon Exposure to Sublethal Concentration of Imidacloprid

Ibrahim, Y. B.; Kueh, T. F.
February 2013
Pertanika Journal of Tropical Agricultural Science;Feb2013, Vol. 36 Issue 1, p51
Academic Journal
The effects of sublethal exposure to imidacloprid (Kendor® 18.3SL) on the biological performance of the ladybird beetle, Menochilus sexmaculatus F., the most common coccinellid beetle found feeding on aphids, were studied under ambient laboratory conditions of 27-32°C and 50-75% RH. The corn leaf aphid, Rhopalosiphum maidis, was offered as prey. The LC50 obtained from the contact bioassay at 24 h post-treatment for the regression slope, b=1.08, indicated that imidacloprid was likely to be selective. Sublethal exposure to imidacloprid caused reduction in survival with the females reaching 50% mortality by the 24th day, while that of the control was the 36th day. Meanwhile, demographic parameters including the net reproductive rate (Ro), generation time (T), innate capacity of increase (rm) and the finite rate of increase (λ) of the treated females were markedly inferior as compared to the untreated females. The Ro value indicated that the control female was capable of producing 17.59 female offspring but treated female could only produce 2.55 female offspring during their generation time of 25.17 and 23.04 days, respectively. The capacity or instantaneous rate of increase (rc) declined from 0.114 to 0.041, which was parallel with the decrease in the intrinsic rate of increased (rm) value from 0.125 to 0.041. The values of λ were 1.133 and 1.042 for the control and treated population, respectively. In the meantime, the doubling time (DT) increased sharply to 16.86 days for the treated population, whereas DT for the control was 6.09 days. The sex ratio was biased towards the female and generally the females survived slightly longer (48 days) than the males (46 days), as observed in the control population.


Related Articles

  • Bioactivity of sandalwood oil ( Santalum austrocaledonicum) and its main components against the cotton aphid, Aphis gossypii. Roh, Hyun; Kim, Junheon; Shin, Eun-Sik; Lee, Dong; Choo, Ho; Park, Chung // Journal of Pest Science;Sep2015, Vol. 88 Issue 3, p621 

    Control efficacy of sandalwood oil ( Santalum austrocaledonicum Vieill) and its main components, α- and β-santalol, which have not been tested before against Aphis gossypii Glover (Hemiptera:Aphididae), was investigated in the laboratory, greenhouse and field bioassays. The main...

  • Two-spotted ladybug.  // Encyclopedia of Animals;8/1/2017, p1 

    In spite of its name, the two-spotted ladybug often has more than two spots. In fact the two-spotted ladybug may have as many as six spots or may even be totally black. However, if a ladybug has seven spots it is a different species called a seven-spotted ladybug. The ladybug is sometimes...

  • Seven-spotted ladybug.  // Encyclopedia of Animals;8/1/2017, p1 

    Unlike the two-spotted ladybug, which varies greatly in its appearance from one specimen to the next, the seven-spotted ladybug always appears the same. Its orangish-red body has a black spot on the line where the two wingcases meet and three more spots on each wingcase. Like other ladybugs,...

  • Prey Foraging Movements by Hippodamia convergens in Wheat are Influenced by Hunger and Aphids. Elliott, Norman C.; Kieckhefer, Robert W.; Phoofolo, Mpho W. // Southwestern Entomologist;Jun2013, Vol. 38 Issue 2, p163 

    We investigated foraging movements by adult female convergent lady beetles, Hippodamia convergens Guerin-Meneville, on wheat, Triticum aestivum L., growing in 1.8 × 1.8 m plantings in a greenhouse with a soil floor. The wheat was planted to simulate wheat in a typical production field. One...

  • Prevalence of male-killer in a sympatric population of two sibling ladybird species, Harmonia yedoensis and Harmonia axyridis (Coleoptera: Coccinellidae). SUZUKI NORIYUKI; YUICHI KAMEDA; NAOYA OSAWA // European Journal of Entomology;2014, Vol. 111 Issue 2, p307 

    In predatory ladybirds male embryos in clutches of eggs infected with male-killing bacterial endosymbionts do not hatch and are consumed by female hatchlings. Moreover, it is predicted that infection with male-killing bacteria should be prevalent in a ladybird population if the fitness advantage...

  • NEW DATA REGARDING THE SPREADING OF THE INVASIVE SPECIES Harmonia axyridis (Pallas, 1773) (INSECTA: COLEOPTERA, COCCINELLIDAE) IN ROMANIA. Cornelia, CHIMIŞLIU // Oltenia, Studii si Comunicari Seria Stiintele Naturii;2016, Vol. 32 Issue 2, p67 

    The invasive species Harmonia axyridis (Pallas, 1773) is of Asian origin. It was first recorded in Romania in 2009 in Hunedoara County, Maramureş County and Bihor County, and a year later, in Bucharest and in the counties of Buzău, Prahova, Giurgiu. Beginning with the year 2011, we have...

  • Hydroxylation of thiacloprid by bacterium Stenotrophomonas maltophilia CGMCC1.1788. Yin-Juan Zhao; Yi-Jun Dai; Ci-Gang Yu; Jun Luo; Wen-Ping Xu; Jue-Ping Ni; Sheng Yuan // Biodegradation;Nov2009, Vol. 20 Issue 6, p761 

    Chloropyridinyl neonicotinoid insecticides play a major role in crop protection and flea control on cats and dogs. Imidacloprid, thiacloprid and acetamiprid have in common the 6-chloro-3- pyridinylmethyl group but differ in the nitroguanidine or cyanoamidine substituent on an acyclic or cyclic...

  • Aphid facultative symbionts reduce survival of the predatory lady beetle Hippodamia convergens. Costopoulos, Kelly; Kovacs, Jennifer L; Kamins, Alexandra; Gerardo, Nicole M // BMC Ecology;2014, Vol. 14 Issue 1, p2 

    Background Non-essential facultative endosymbionts can provide their hosts with protection from parasites, pathogens, and predators. For example, two facultative bacterial symbionts of the pea aphid (Acyrthosiphon pisum), Serratia symbiotica and Hamiltonella defensa, protect their hosts from...

  • Actividad locomotriz de Cycloneda sanguinea (Coleoptera: Coccinellidae) expuesta a semioquimicos volátiles y al contacto directo con la fuente de olor. Heit, Guillermo E.; Sardoy, Pedro; Cohen, Garciela R.; Mareggiani, Garciela // Revista de la Sociedad Entomológica Argentina;Nov2007, Vol. 66 Issue 3/4, p197 

    Cycloneda sanguínea (Linnaeus) (Coleóptera: Coccinellidae) is an opportunistic polyphagous predator and when aphids dominate its menu, a complex foraging behaviour can be expected. An active movement characterized by a high locomoior activity plays an important role in the search of this...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics