CISAB Speaker| Therese (Teri) A. Markow

C E N T E R F O R T H E I N T E G R A T I V E S T U D Y O F A N I M A L B E H A V I O R

S P E A K E R S E R I E S

Therese (Teri) A. Markow

Regents Professor of Ecology & Evolutionary Biology
and Director, Center for Insect Science
Department of Ecology & Evolutionary Biology
University of Arizona-Tuscon

How Drosophila Males Make Eggs: It's Elemental

20 October Guest Lecture for Fall 2000 Graduate Seminar:
Behavioral Ecology

ABSTRACT:
Oogenesis in Drosophila requires a significant amount of phosphorus (P). Oocytes mature in follicles each of which contains 15 highly polyploid transcriptionally active chromosomes. The demand for P is met, in part, from the male's ejaculate following mating. Females incorporate 32P from radiolabeled males into their ovaries, specifically into their nucleic acids. The mechanism by which P uptake from the reproductive tract occurs must differ from that by which proteins are transferred, as P uptake is observed in species not showing female incorporation of ejaculate proteins.

RELATED READING:
Readings for class:
© 2000 CISAB

Pitnick, S., Spicer, G.S., and T. Markow. 1997. Phylogenetic examination of female incorporation of ejaculate in Drosophila. Evolution 51(3):833-845.

Pitnick, S., Markow, T.A., and G. S. Spicer. 1995. Delayed male maturity is a cost of producing large sperm in Drosophila. Proceedings National Academy of Science USA 92(23):10614-10618. |ABSTRACT| FULL TEXT|

Readings for seminar:
Markow, T.A., Raphael, B., Dobberfuhl, D., Breitmeyer, C.M., Elser, J.J., and E. Pfeiler. 1999. Elemental stoichiometry of Drosophila and their hosts. Functional Ecology 13(1):78-84. |ABSTRACT|

Markow, T.A. 1997. Assortative fertilization in Drosophila. Proceedings National Academy of Science USA 94(15):7756-7760. |ABSTRACT| FULL TEXT|

ONLINE RESOURCES:
© 2000 CISAB