2012 Fiscal Year Final Research Report
Quantitative genetic study for parental care traits in a burrower bug, Adomerusrotundus
| Project/Area Number |
22570022
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Ecology/Environment
|
|---|
| Research Institution | Saga University |
|---|
Principal Investigator |
|
|---|
| Research Collaborator |
FILIPPI Lisa Hofstra University, Department of Biology, Associate Professor
HIRONAKA Mantaro 浜松医科大学, 医学部, 特任研究員 (70456565)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Keywords | 保育行動 / 栄養卵 / 遺伝変異 / ベギング / ツチカメムシ |
|---|
| Research Abstract |
Theory suggests that there would be a conflict of interest between parents and offspring in some animal species. Parents attempt to decide allocation of care investment among broods according to their own maximal fitness, while young try to manipulate their parents to maximize their own fitness. Such a conflict may lead toward an evolutionary solution, involving co-adaptation between care traits by parents and begging traits by offspring. However, genetic variation of both traits still remains to be recognized explicitly. Using a selection experiment, this study, therefore, aims to provide evidence that there is actually genetic variation in the parental care traits and offspring begging traits in a subsocial burrower bug, Adomerus rotundus, examining the heritability of such traits. We sequentially selected a laboratory population toward the direction for either increase (positive direction) or decrease (negative direction) in trophic egg abundance as one of the female provisioning traits in order to examine the realized heritability for this trait. But no significant difference in the average value between two strains, which were selected for each direction of trophic egg abundance, was detected. It is possible that this could have been caused by genetic depletion of the laboratory population that has been already reared for over 50 generations from the wild population. Alternatively, we in turn tried to quantify the cost and benefit of both trophic egg production and seed provisioning behavior, and investigated a tradeoff between some parental care traits in order to evaluate evolutionary adaptation of parental care traits at the phenotypic level. Then, we achieved significant results in this study.
|
-
-
[Journal Article] (2012) Provisioning call by mothers of a subsocial shield bug2012
Author(s)
Nomakuchi, S., Yanagi, T., Baba, N., Takahira, A., Hironaka, M. and Filippi, L
-
Journal Title
Journal of Zoology
Volume: 288 (1)
Pages: 50-56
Peer Reviewed
-
-
[Journal Article] (2011) Trophic eggs compensate for poor offspring feeding capacity in a subsocial burrower bug2011
Author(s)
Baba, N., Hironaka, M., Hosokawa, T., Mukai, H., Nomakuchi, S. and Ueno, T
-
Journal Title
Biol. Lett
Volume: 7
Pages: 194-196
Peer Reviewed
-
[Journal Article] (2010) Maternal-care behaviour in Adomerus variegatus(Hemiptera: Cydnidae)2010
Author(s)
Mukai, H., Hironaka, M., Baba, N., Yanagi, T., Inadomi, K., Filippi, L. and Nomakuchi, S
-
Journal Title
Canadian Entomologist
Volume: 142
Pages: 52-56
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
