Behavior and Effectiveness of Adult Hippodamia convergens (Coleoptera: Coccinellidae) as a Predator of Acyrthosiphon pisum (Homoptera: Aphididae) on a Wax Mutant of Pisum sativum

1998 ◽  
Vol 27 (4) ◽  
pp. 902-909 ◽  
Author(s):  
S. D. Eigenbrode ◽  
C. White ◽  
M. Rohde ◽  
C. J. Simon
Keyword(s):  
Pisum Sativum ◽  
Acyrthosiphon Pisum ◽  
Hippodamia Convergens

SEASONAL ABUNDANCE OF THE PEA APHID, ACYRTHOSIPHON PISUM (HOMOPTERA: APHIDIDAE), IN MANITOBA FIELD PEAS

1986 ◽  
Vol 118 (6) ◽  
pp. 601-607 ◽  
Author(s):  
G.A. Maiteki ◽  
R.J. Lamb ◽  
S.T. Ali-Khan
Keyword(s):  
Pisum Sativum ◽  
Acyrthosiphon Pisum ◽  
Pea Aphid ◽  
Seasonal Abundance ◽  
Economic Threshold ◽  
Field Peas ◽  
Pea Aphids

AbstractPea aphids, Acyrthosiphon pisum (Harris), were sampled from 1980 to 1983 in field peas, Pisum sativum (L.), in Manitoba. Sweep and foliage samples were taken in commercial fields and plots. Aphids were found in late May or early June soon after the crop emerged, but populations were low throughout June. Populations increased in July, when the crop was flowering and producing pods, and peaked in the latter half of July or early August in 3 of the 4 years, when pods were maturing. Populations decreased rapidly after the peak, as the plants senesced. In 1980, a drought year, aphid densities were low and the populations peaked in the middle of August. From 1981 to 1983, densities exceeded the economic threshold in all commercial fields and all but one of the plots that were sampled.

scholarly journals THE PHENOLOGY AND DISTRIBUTION OF APHIDS IN CALIFORNIA ALFALFA AS MODIFIED BY LADYBIRD BEETLE PREDATION (COLEOPTERA: COCCINELLIDAE)

1980 ◽  
Vol 112 (5) ◽  
pp. 489-495 ◽  
Author(s):  
A. P. Gutierrez ◽  
C. G. Summers ◽  
J. Baumgaertner
Keyword(s):  
Acyrthosiphon Pisum ◽  
Pea Aphid ◽  
Hippodamia Convergens ◽  
Ladybird Beetle ◽  
Distribution Parameters ◽  
Aphid Populations

AbstractThe phenologies and distributions of pea aphid (Acyrthosiphon pisum (Harris)), blue alfalfa aphid (A. kondoi (Shinji)), and spotted alfalfa aphid (Therioaphis maculata (Buckton)) were intensively studied in California alfalfa. The results showed, as expected, that aphid populations across all densities were aggregated; but that ladybird beetle (Hippodamia convergens (G.-M.)) predation increased the degree of aggregation. The distribution parameters of the aphids were estimated using methods developed by Iwao and Kuno (1971).

THE INFLUENCE OF APHID PREY CONSUMPTION ON SEARCHING BEHAVIOR, WEIGHT INCREASE, DEVELOPMENTAL TIME, AND MORTALITY OF CHRYSOPA CARNEA (NEUROPTERA: CHRYSOPIDAE) AND HIPPODAMIA CONVERGENS (COLEOPTERA: COCCINELLIDAE) LARVAE

1981 ◽  
Vol 113 (11) ◽  
pp. 1007-1014 ◽  
Author(s):  
J. U. Baumgaertner ◽  
A. P. Gutierrez ◽  
C. G. Summers
Keyword(s):  
Weight Gain ◽  
Acyrthosiphon Pisum ◽  
Fat Body ◽  
Developmental Time ◽  
Hippodamia Convergens ◽  
Hunger Level ◽  
Larval Stages ◽  
First Instar ◽  
Chrysopa Carnea ◽  
Prey Aphids

AbstractThe behavior of larval stages of the green lace wing, Chrysopa carnea Stephens, and of the ladybird beetle Hippodamia convergens G.-M. were studied in the laboratory. With increasing hunger level, only first instar H. convergens larvae spent more time searching in the upper part of alfalfa stems, where both prey aphids, Acyrthosiphon pisum (Harris) and Acyrthosiphon kondoi (Shinji), are found. All larval instars tested except first instar C. carnea visited more stems per unit time with increasing hunger level. The weight gain, the developmental time, and the mortality of all larvae were adversely influenced at low food levels, but differently for each predator size and species. C. carnea larvae had higher rates of fat body utilization and weight gain than coccinellid larvae.

Distinction de biotypes dans des populations du puceron du pois, Acyrthosiphon pisum (Harris), de l'Amérique du Nord

1977 ◽  
Vol 55 (6) ◽  
pp. 983-989 ◽  
Author(s):  
Jacques L. Auclair ◽  
P. N. Srivastava
Keyword(s):  
United States ◽  
New Mexico ◽  
Pisum Sativum ◽  
Host Plants ◽  
Acyrthosiphon Pisum ◽  
Broad Bean ◽  
Growth Curves ◽  
The United States ◽  
Susceptible Host ◽  
Pisum Sativum L

Virginoparae of Acyrthosiphon pisum (Harris) collected from three different localities in the Province of Québec, Canada (Sainte-Thérèse de Blainville, Saint-Jean, and Ile aux Coudres), and two in the United States (states of Kansas and New Mexico) were reared on two normally susceptible host plants: e.g. the broad bean, Viciafaba L., variety Windsor, and the pea, Pisum sativum L., variety Lincoln. Results from growth curves suggest that the former three clones represent one or several biotypes different from the latter two, and results from mortality and rate of reproduction indicate that the clones from Saint-Jean and Sainte-Thérèse are two different biotypes. High mortality on peas indicates further that the clone from Ile aux Coudres is a biotype different from the others, whereas the clones from New Mexico and Kansas may represent only one biotype.

scholarly journals Supplemental Foods Affect Energetic Reserves, Survival, and Spring Reproduction in Overwintering Adult Hippodamia convergens (Coleoptera: Coccinellidae)

2019 ◽  
Vol 49 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Nathan H Mercer ◽  
Nicholas M Teets ◽  
Ricardo T Bessin ◽  
John J Obrycki
Keyword(s):  
Protein Content ◽  
Acyrthosiphon Pisum ◽  
Carbohydrate Content ◽  
Hippodamia Convergens ◽  
Food Control ◽  
Food Treatment ◽  
Adult Weight ◽  
Bee Pollen ◽  
Preoviposition Period ◽  
Lepidoptera Pyralidae

Abstract For insects that overwinter as adults, winter food resources may affect subsequent spring reproduction and abundance. We tested if provision of food supplements to overwintering adult Hippodamia convergens (Guerin) increased energy reserves, winter survival, and spring reproduction. During 2015–2016, H. convergens adults were placed in field cages in December; adults in each cage received water, Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae), Ephestia kuehniella (Zeller) (Lepidoptera: Pyralidae) eggs, bee pollen, wheast protein, sugar, honey, or no food (control). In 2016–2017, treatments were reduced to sugar, bee pollen, A. pisum with E. kuehniella eggs, and no food (control). Adults were sampled to quantify weight, lipid, carbohydrate, and protein content. In 2015–2016, A. pisum and E. kuehniella eggs increased adult weight and protein content, but adult carbohydrate content was reduced by A. pisum and wheast protein treatments. Adults receiving honey and sugar supplementation had higher lipid and carbohydrate content relative to controls. The number of live individuals at the end of the experiment in March 2016 did not differ among treatments. In 2016–2017, winter prey supplements had the greatest effect on protein content, weight, and number of live adults recovered, whereas sugar supplementation increased lipid and carbohydrate content, and number of live adults recovered. Spring reproduction of surviving pairs was evaluated among treatments in March 2017. Prey supplementation in 2016–2017 increased the number of eggs laid and decreased preoviposition period, and food treatment did not affect fertility. Our results indicate that prey and sugar resources improve the overwintering success and spring reproduction of H. convergens.

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