Abstract
The effectiveness of hybrid vigor, which can counteract deleterious effects of inbreeding in flightless Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was investigated. First, we performed the reciprocal cross between two isofemale lines and compared survival and reproductive characteristics between isofemale and hybrid lines under laboratory conditions. The survival of one of the hybrid lines was significantly higher than that of the two isofemale lines. Early fecundity tended to be higher in the two hybrid lines than in the two isofemale lines. Second, we compared the effectiveness of control of Aphis gossypii Glover (Homoptera: Aphididae) between isofemale and hybrid lines by release experiments in greenhouses. The number of A. gossypii was suppressed in treatments in which two hybrid lines were released compared with those in which two isofemale lines were released. These results suggest that hybrid vigor is effective as a method for assuring the quality of flightless H. axyridis.
| Original language | English |
|---|---|
| Pages (from-to) | 85-93 |
| Number of pages | 9 |
| Journal | BioControl |
| Volume | 57 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Feb 2012 |
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Keywords
- Biological control
- Flightless
- Harmonia axyridis
- Inbreeding depression
- Quality control
- Reciprocal cross
ASJC Scopus subject areas
- Insect Science
- Agronomy and Crop Science
Cite this
Assessment of hybrid vigor between flightless lines to restore survival and reproductive characteristics in the ladybird beetle Harmonia axyridis. / Seko, Tomokazu; Miyatake, Takahisa; Miura, Kazuki.
In: BioControl, Vol. 57, No. 1, 02.2012, p. 85-93.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Assessment of hybrid vigor between flightless lines to restore survival and reproductive characteristics in the ladybird beetle Harmonia axyridis
AU - Seko, Tomokazu
AU - Miyatake, Takahisa
AU - Miura, Kazuki
PY - 2012/2
Y1 - 2012/2
N2 - The effectiveness of hybrid vigor, which can counteract deleterious effects of inbreeding in flightless Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was investigated. First, we performed the reciprocal cross between two isofemale lines and compared survival and reproductive characteristics between isofemale and hybrid lines under laboratory conditions. The survival of one of the hybrid lines was significantly higher than that of the two isofemale lines. Early fecundity tended to be higher in the two hybrid lines than in the two isofemale lines. Second, we compared the effectiveness of control of Aphis gossypii Glover (Homoptera: Aphididae) between isofemale and hybrid lines by release experiments in greenhouses. The number of A. gossypii was suppressed in treatments in which two hybrid lines were released compared with those in which two isofemale lines were released. These results suggest that hybrid vigor is effective as a method for assuring the quality of flightless H. axyridis.
AB - The effectiveness of hybrid vigor, which can counteract deleterious effects of inbreeding in flightless Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was investigated. First, we performed the reciprocal cross between two isofemale lines and compared survival and reproductive characteristics between isofemale and hybrid lines under laboratory conditions. The survival of one of the hybrid lines was significantly higher than that of the two isofemale lines. Early fecundity tended to be higher in the two hybrid lines than in the two isofemale lines. Second, we compared the effectiveness of control of Aphis gossypii Glover (Homoptera: Aphididae) between isofemale and hybrid lines by release experiments in greenhouses. The number of A. gossypii was suppressed in treatments in which two hybrid lines were released compared with those in which two isofemale lines were released. These results suggest that hybrid vigor is effective as a method for assuring the quality of flightless H. axyridis.
KW - Biological control
KW - Flightless
KW - Harmonia axyridis
KW - Inbreeding depression
KW - Quality control
KW - Reciprocal cross
UR - http://www.scopus.com/inward/record.url?scp=84856003905&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84856003905&partnerID=8YFLogxK
U2 - 10.1007/s10526-011-9407-1
DO - 10.1007/s10526-011-9407-1
M3 - Article
VL - 57
SP - 85
EP - 93
JO - BioControl
JF - BioControl
SN - 1386-6141
IS - 1
ER -