Polyandrous females provide sons with more competitive sperm: Support for the sexy-sperm hypothesis in the rattlebox moth (Utetheisa ornatrix)

Evolution ◽  
2015 ◽  
Vol 70 (1) ◽  
pp. 72-81 ◽  
Author(s):  
Andrea L. Egan ◽  
Kristin A. Hook ◽  
H. Kern Reeve ◽  
Vikram K. Iyengar
Keyword(s):  
Utetheisa Ornatrix ◽  
Sexy Sperm

scholarly journals Chrysoperla externa (Neuroptera: Chrysopidae) and Utetheisa ornatrix (Lepidoptera: Arctiidae) on organically grown Crotalaria juncea (Fabaceae)

2012 ◽  
Vol 30 (3) ◽  
pp. 459-468 ◽  
Author(s):  
M.A. Costa ◽  
W.S. Tavares ◽  
A.I.A. Pereira ◽  
I. Cruz ◽  
J.E. Serrão ◽  
...  
Keyword(s):  
Biological Control ◽  
Artificial Diet ◽  
Pyrrolizidine Alkaloids ◽  
Biological Research ◽  
Utetheisa Ornatrix ◽  
Crotalaria Juncea ◽  
Lifetime Fecundity ◽  
Ecological Aspects ◽  
Minas Gerais State ◽  
Organically Grown

Chrysoperla externa (Neuroptera: Chrysopidae) larvae can avoid foraging on plants of Crotalaria juncea (Fabaceae) after the issuance of floral buds, when the prey of Utetheisa ornatrix (Lepidoptera: Arctiidae) incorporate toxic pyrrolizidine alkaloids from this plant. This reduces the predation and favors increasing the number of adults and eggs of this defoliator on crops of this plant. The aim of the present paper was to evaluate some biological and ecological aspects of C. externa and U. ornatrix on the organic crop of C. juncea in the EMBRAPA Maize and Sorghum in Sete Lagoas, Minas Gerais State, Brazil. Chrysoperla externa and U. ornatrix were more abundant in the vegetative and flowering stages of C. juncea, respectively, with caterpillars of this defoliator feeding on leaves and seeds of this plant. The duration of the stages/instars, survival, lifetime fecundity, and oviposition showed that the branches of C. juncea are a suitable food for U. ornatrix. The abundance of adults and larvae of C. externa was lower in the flowering and pods stages of C. juncea, respectively, when the postures of U. ornatrix are present, probably due to the toxicity of the eggs of this prey to this predator. During these stages, C. externa may be reared with alternative hosts, and when the crops of C. juncea are scarce, an artificial diet should be used for rearing this defoliator in the laboratory for biological research and the development of biological control tactics.

scholarly journals Dados bionômicos de Utetheisa ornatrix (L., 1758) (Lepidoptera, Arctiidae)

Bragantia ◽  
1955 ◽  
Vol 14 (unico) ◽  
pp. 109-115
Author(s):  
Romeu de Tella
Keyword(s):  
Utetheisa Ornatrix

Utetheisa ornatrix (L., 1758) é, entre os inimigos de Crotalaria spp., o mais prejudicial. Sua lagarta, atacando de preferência a vagem da planta, come tôdas as sementes, danificando sobremaneira a produção. O inseto passa por cinco instars e sua evolução, em condições de laboratório, nos meses de maio a setembro, foi em média de 51 dias, dos quais 22 passados no estado larval. Uma fêmea põe em média 459 ovos, em 10 posturas. Foi constatada a presença de alguns inimigos naturais: Apanteles sp. (Hymenoptera), Ypophcemiops sp. e Archytas sp. (Diptera). Obtivemos também um biperparasita Mesochorus sp. (Hymenoptera), parasitando aquele microhimenoptero.

Identification and Biosynthetic Studies of the Hydrocarbon Sex Pheromone in Utetheisa ornatrix

2007 ◽  
Vol 33 (7) ◽  
pp. 1336-1345 ◽  
Author(s):  
Man-Yeon Choi ◽  
Hangkyo Lim ◽  
Kye Chung Park ◽  
Richard Adlof ◽  
Shifa Wang ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Utetheisa Ornatrix ◽  
Biosynthetic Studies
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