Evolutionary Biology Lab

Welcome to Amitabh Joshi's Lab at JNCASR

We do some theoretical (largely simulations) and mostly experimental work on multiple questions in evolutionary biology and population dynamics. All our experimental work involves long-term studies with lab populations of Drosophila. We are looking at adaptations to larval crowding and their impact on population stability; evolution of rapid pre-adult development and its implications for sexual conflict and sexual selection; the interaction of dispersal and life-history and its effects on stability and persistence of small populations and metapopulations; conceptual foundations of evolutionary biology and genetics (see FOGEG page). CONTACT ME: ajoshi@jncasr.ac.in, TWITTER: @joshiamitabhevo

Founding Member, and Member, Executive Council, Indian Society of Evolutionary Biologists (ISEB):

website: www.evolutionindia.org Twitter: @india_evolution

Some recent representative publications:

Dey, S., Goswami, B. and A. Joshi. 2015. A possible mechanism for the attainment of out-of-phase periodic dynamics in two chaotic subpopulations coupled at low dispersal rate. Journal of Theoretical Biology 367: 100-110. (PDF)

Sarangi, M., Nagarajan, A., Dey, S., Bose, J. and A. Joshi. 2016. Evolution of increased larval competitive ability in Drosophila melanogaster without increased larval feeding rate. Journal of Genetics 95: 491-503. (LINK)

Gupta, M., Joshi, A. and T. N. C. Vidya. 2017. Effects of social organization, trap arrangement and density, sampling scale, and population density on bias in population size estimation using some common mark-recapture estimators. PLoS ONE 12(3): e0173609. doi:10.1371/journal.pone.0173609. (LINK)

Gupta, M., Prasad, N. G., Dey, S., Joshi, A. and T. N. C. Vidya. 2017. Niche construction in evolutionary theory: the construction of an academic niche? Journal of Genetics 96: 491-504. (LINK) (VIDEO ABSTRACT)

Tung, S., Rajamani, M., Joshi, A. and S. Dey. 2019. Complex interaction of resource availability, life-history and demography determines the dynamics and stability of stage-structured populations . Journal of Theoretical Biology 460: 1-12. (LINK to a previous bioRxiv version)

Ghosh, S. M., Satish, K. M., Jayaram, M. and A. Joshi. 2019. Does long-term selection for development time result in canalization: a test using Drosophila melanogaster. Frontiers in Ecology and Evolution 7: 228 (Link: https://doi.org/10.3389/fevo.2019.00228).

guftand jahaan-e-maa, aayaa ba-too mee saazad; guftam ke namee saazad, guftand ke barham zan

God asked me if I did find his universe to my likihg and taste; when I said no, then He replied, create your own and lay this waste

(Allama Iqbal)

"While poets and mathematicians have the luxury of creating alternative universes, biologists must make do with model systems"

(N. G. Prasad and A. Joshi, 2003, Journal of Genetics)