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Effect of Air Humidity on Sex Ratio and Development of Ladybird Harmonia axyridis (Coleoptera : Coccinellidae)
Joint Authors
Kalushkov, Plamen
Nedvěd, Oldřich
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-12-27
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Length of development of larvae and pupae of the invasive alien ladybird beetle Harmonia axyridis, their survival rates, sex ratio, and fresh mass of the emerged adults were measured at three contrasting levels of relative air humidity: 30, 60, and 90%, 25°C and photoperiod 16L : 8D.
Overall sex ratio was 51%, but there was a strong trend for higher proportion of males at low humidity and higher proportion of females at high humidity.
Survival rate, larval developmental time, and adult mass were all differently influenced by air humidity depending on the food type.
In individuals fed with aphid Acyrthosiphon pisum there was a trend for better survival, shorter development, and higher mass gained at higher humidity.
These trends were opposite or nonsignificant in individuals fed with frozen eggs of moth Ephestia kuehniella.
American Psychological Association (APA)
Nedvěd, Oldřich& Kalushkov, Plamen. 2011. Effect of Air Humidity on Sex Ratio and Development of Ladybird Harmonia axyridis (Coleoptera : Coccinellidae). Psyche،Vol. 2012, no. 2012, pp.1-5.
https://search.emarefa.net/detail/BIM-451753
Modern Language Association (MLA)
Nedvěd, Oldřich& Kalushkov, Plamen. Effect of Air Humidity on Sex Ratio and Development of Ladybird Harmonia axyridis (Coleoptera : Coccinellidae). Psyche No. 2012 (2012), pp.1-5.
https://search.emarefa.net/detail/BIM-451753
American Medical Association (AMA)
Nedvěd, Oldřich& Kalushkov, Plamen. Effect of Air Humidity on Sex Ratio and Development of Ladybird Harmonia axyridis (Coleoptera : Coccinellidae). Psyche. 2011. Vol. 2012, no. 2012, pp.1-5.
https://search.emarefa.net/detail/BIM-451753
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-451753