TY - JOUR
T1 - Partial life table analysis for larval Coleomegilla maculata (Degeer) and Coccinella septempunctata L. (Coleoptera: Coccinellidae) in alfalfa
AU - Obrycki, John J.
AU - Ormord, Andrew M.
AU - Giles, Kristopher L.
N1 - Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 1997/10
Y1 - 1997/10
N2 - Eggs, larvae, and adults of the introduced Palearctic species Coccinella septempunctata L. and the indigenous Coleomegilla maculata (Degeer) were sampled in spring alfalfa along with their prey, Acyrthosiphon pisum (Harris) (Homoptera: Aphididae), to determine their temporal occurrence, rate of survival, and density of A. pisum. A partial life table was constructed for the first, second, and third instars of both coccinellid species. The larvae and adults of both predators overlap spatially and temporally in spring alfalfa, and mortality from first instar through third instar was high for both species (93.0% for C. maculata and 90.8% for C. septempunctata). Adult density ranged from 7.0 to 11.8 adults per m2 for C. maculata and from 5.9 to 11.8 adults per m2 for C. septempunctata. The density of A. pisum ranged from 5.4 to 116.7 aphids per m2.
AB - Eggs, larvae, and adults of the introduced Palearctic species Coccinella septempunctata L. and the indigenous Coleomegilla maculata (Degeer) were sampled in spring alfalfa along with their prey, Acyrthosiphon pisum (Harris) (Homoptera: Aphididae), to determine their temporal occurrence, rate of survival, and density of A. pisum. A partial life table was constructed for the first, second, and third instars of both coccinellid species. The larvae and adults of both predators overlap spatially and temporally in spring alfalfa, and mortality from first instar through third instar was high for both species (93.0% for C. maculata and 90.8% for C. septempunctata). Adult density ranged from 7.0 to 11.8 adults per m2 for C. maculata and from 5.9 to 11.8 adults per m2 for C. septempunctata. The density of A. pisum ranged from 5.4 to 116.7 aphids per m2.
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M3 - Article
AN - SCOPUS:0031391696
SN - 0022-8567
VL - 70
SP - 339
EP - 346
JO - Journal of the Kansas Entomological Society
JF - Journal of the Kansas Entomological Society
IS - 4
ER -