Abstract
Chrono-biological traits were changed by selecting for life-history traits via a genetic linkage controlling both time-related behavioural and life-history traits. Behavioural traits were compared between lines selected for young (Y-lines) and old (O-lines) age at reproduction in the melon fly, Bactrocera cucurbitae (Coquillett). Adults from O-lines, which survive longer than flies from Y-lines, mated later in the day and had a longer period of circadian rhythm in the locomotor activity than those from Y-lines. Flies from F1 reciprocal crosses had an intermediate time of mating and periods of circadian rhythm between that of the parents, indicating a genetic basis to these traits. The presence of these behavioural differences across the selection lines indicates that chrono-biological traits exhibit correlated responses to selection on age at reproduction. The correlated responses in the behavioural traits to selection for life-history traits are discussed from two points of view: pleiotropy and inadvertent selection.
| Original language | English |
|---|---|
| Pages (from-to) | 302-306 |
| Number of pages | 5 |
| Journal | Heredity |
| Volume | 88 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2002 |
Keywords
- Correlated response
- Free-running period
- Life-history
- Longevity
- Mating behaviour
- Melon fly
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Genetics
- Genetics(clinical)