Correlated changes in circadian clocks in response to selection for faster pre-adult development in fruit flies Drosophila melanogaster

2012 ◽  
Vol 183 (3) ◽  
pp. 333-343 ◽  
Author(s):  
Pankaj Yadav ◽  
Vijay Kumar Sharma
Keyword(s):  
Drosophila Melanogaster ◽  
Adult Development ◽  
Fruit Flies ◽  
Circadian Clocks ◽  
Response To Selection ◽  
Selection For

scholarly journals Evolution of Pre- and Post-Copulatory Traits in Male Drosophila melanogaster as a Correlated Response to Selection for Resistance to Cold Stress

PLoS ONE ◽  
2016 ◽  
Vol 11 (4) ◽  
pp. e0153629 ◽  
Author(s):  
Karan Singh ◽  
Manas Arun Samant ◽  
Megha Treesa Tom ◽  
Nagaraj Guru Prasad
Keyword(s):  
Drosophila Melanogaster ◽  
Cold Stress ◽  
Correlated Response ◽  
Response To Selection ◽  
Selection For

scholarly journals Evolution of reduced minimum critical size as a response to selection for rapid pre-adult development in Drosophila melanogaster

2020 ◽  
Vol 7 (6) ◽  
pp. 191910 ◽  
Author(s):  
Khushboo Sharma ◽  
Nalini Mishra ◽  
Mallikarjun N. Shakarad
Keyword(s):  
Drosophila Melanogaster ◽  
Adult Development ◽  
Critical Size ◽  
Food Limitation ◽  
Larval Growth ◽  
Critical Duration ◽  
Adult Size ◽  
Time Duration ◽  
Critical Weight ◽  
Selection For

Adult body size in holometabolus insects is directly proportional to the time spent during the larval period. The larval duration can be divided into two parts: (i) pre-critical duration—time required to attain a critical size/critical weight that would result in successful completion of development and metamorphosis even under non-availability of nutrition beyond the time of attainment of critical size, and (ii) post-critical duration—the time duration from the attainment of critical size till pupation. It is of interest to decipher the relative contribution of the two larval growth phases (from the hatching of the egg to the attainment of critical size, and from the attainment of critical size to pupation) to the final adult size. Many studies using Drosophila melanogaster have shown that selecting populations for faster development results in the emergence of small adults. Some of these studies have indirectly reported the evolution of smaller critical size. Using two kinds of D. melanogaster populations, one of which is selected for faster/accelerated pre-adult development and the other their ancestral control, we demonstrate that the final adult size is determined by the time spent as larvae post the attainment of critical size despite having increased growth rate during the second larval instar. Our populations under selection for faster pre-adult development are exhibiting adaptive bailout due to intrinsic food limitation as against extrinsic food limitation in the yellow dung fly.

scholarly journals The genetic analysis of the direct and correlated response to selection for chaetae in Drosophila melanogaster

1973 ◽  
Vol 22 (1) ◽  
pp. 1-7
Author(s):  
W. R. Scowcroft
Keyword(s):  
Drosophila Melanogaster ◽  
Genetic Analysis ◽  
Genetic Correlation ◽  
Statistical Approach ◽  
Correlated Response ◽  
Minor Importance ◽  
Response To Selection ◽  
Genetic Changes ◽  
Selection For ◽  
Selection Of

SUMMARYThe direct and correlated response to selection of scutellar microchaetae and scutellar bristles has been analysed by determining the contribution of the three major chromosomes, alone and in combination with each other, to the overall response. The results of the analysis confirm a previous finding, based on a formal statistical approach, that response to selection for microchaetae had highly pleiotropic effects on scutellar bristles. In lines selected, each for high and low microchaetae, genetic changes in the 2nd and 3rd chromosomes are pre-eminent and essentially equal. Inter-chromosomal interactions are of relatively minor importance in interpreting the response to selection for microchaetae but assume greater importance with respect to the correlated character. The results are discussed in terms of the genetic correlation between fitness and the character measured.

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