Abstract
Males and females frequently have different fitness optima for shared traits, and as a result, genotypes that are high fitness as males are low fitness as females, and vice versa. When this occurs, biasing of offspring sex-ratio to reduce the production of the lower-fitness sex would be advantageous, so that for example, broods produced by high-fitness females should contain fewer sons. We tested for offspring sex-ratio biasing consistent with these predictions in broad-horned flour beetles. We found that in both wild-type beetles and populations subject to artificial selection for high- and low-fitness males, offspring sex ratios were biased in the predicted direction: low-fitness females produced an excess of sons, whereas high-fitness females produced an excess of daughters. Thus, these beetles are able to adaptively bias sex ratio and recoup indirect fitness benefits of mate choice.
| Original language | English |
|---|---|
| Pages (from-to) | 193-197 |
| Number of pages | 5 |
| Journal | Ecology Letters |
| Volume | 15 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2012 |
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Keywords
- Beetle
- Sex ratio
- Sexual conflict
- Sexual selection
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
Cite this
Intralocus sexual conflict and offspring sex ratio. / Katsuki, Masako; Harano, Tomohiro; Miyatake, Takahisa; Okada, Kensuke; Hosken, David J.
In: Ecology Letters, Vol. 15, No. 3, 2012, p. 193-197.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Intralocus sexual conflict and offspring sex ratio
AU - Katsuki, Masako
AU - Harano, Tomohiro
AU - Miyatake, Takahisa
AU - Okada, Kensuke
AU - Hosken, David J.
PY - 2012
Y1 - 2012
N2 - Males and females frequently have different fitness optima for shared traits, and as a result, genotypes that are high fitness as males are low fitness as females, and vice versa. When this occurs, biasing of offspring sex-ratio to reduce the production of the lower-fitness sex would be advantageous, so that for example, broods produced by high-fitness females should contain fewer sons. We tested for offspring sex-ratio biasing consistent with these predictions in broad-horned flour beetles. We found that in both wild-type beetles and populations subject to artificial selection for high- and low-fitness males, offspring sex ratios were biased in the predicted direction: low-fitness females produced an excess of sons, whereas high-fitness females produced an excess of daughters. Thus, these beetles are able to adaptively bias sex ratio and recoup indirect fitness benefits of mate choice.
AB - Males and females frequently have different fitness optima for shared traits, and as a result, genotypes that are high fitness as males are low fitness as females, and vice versa. When this occurs, biasing of offspring sex-ratio to reduce the production of the lower-fitness sex would be advantageous, so that for example, broods produced by high-fitness females should contain fewer sons. We tested for offspring sex-ratio biasing consistent with these predictions in broad-horned flour beetles. We found that in both wild-type beetles and populations subject to artificial selection for high- and low-fitness males, offspring sex ratios were biased in the predicted direction: low-fitness females produced an excess of sons, whereas high-fitness females produced an excess of daughters. Thus, these beetles are able to adaptively bias sex ratio and recoup indirect fitness benefits of mate choice.
KW - Beetle
KW - Sex ratio
KW - Sexual conflict
KW - Sexual selection
UR - http://www.scopus.com/inward/record.url?scp=84950170843&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84950170843&partnerID=8YFLogxK
U2 - 10.1111/j.1461-0248.2011.01725.x
DO - 10.1111/j.1461-0248.2011.01725.x
M3 - Article
C2 - 22225600
AN - SCOPUS:84950170843
VL - 15
SP - 193
EP - 197
JO - Ecology Letters
JF - Ecology Letters
SN - 1461-023X
IS - 3
ER -