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Prof. Tamar Keasar

Associate Professor

Phone: 972-4-9838817


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1997 - PhD (Ecology), The Hebrew University

1991 - M.Sc. (Ecology), The Hebrew University

1988 - B.Sc. (Biology), The Hebrew University


Research Interests

I study insect behavioral ecology within the framework of pollination and host-parasitoid interactions. Research on pollination ecology concerns pollinator learning and decision-making; social organization of pollinators; and agricultural pollination. Recent and ongoing work on parasitoid ecology deals with the ecology of polyembryonic parasitoid development; the role of learning in parasitoid behavior; and the use of parasitoids for biological control.

Selected Publications

Keasar T, Sadeh A, Gerchman Y, Shmida A, 2009. The signaling function of an extra-floral display: what selects for signal development? Oikos 118: 1752-1759.

Segoli M, Keasar T, Harari A, Bouskila A, 2009. Limited kin discrimination abilities mediate tolerance toward relatives in polyembryonic wasps. Behavioral Ecology 20: 1262-1267.

Bar-Shai N, Keasar T, Shmida A, 2011. The use of numerical information by bees in foraging tasks. Behavioral Ecology, 22 :317-325.

Morag N, Bouskila A, Segoli M, Rapp O, Keasar T, Harari AR, 2011. The mating status of mothers, and offspring sex, affect clutch size in a polyembryonic parasitoid wasp. Animal Behaviour, 81: 865-870.

Bar-Shai N, Keasar T, Shmida A, 2011. How do solitary bees forage in patches with a fixed number of food items? Animal Behaviour, 82: 1367-1372.

Keinan Y, Kishinevsky M, Segoli M, Keasar T, 2012. Repeated probing of hosts: an important component of superparasitism. Behavioral Ecology, doi: 10.1093/beheco/ars111.

Keasar T, Kishinevsky M, Shmida A, Gerchman Y, Chinkov N, Koplovich A, Katzir G. Plant-derived visual signals may protect beetle herbivores from bird predators. Behavioral Ecology and Sociobiology, 67: 1613-1622.



Ecology, Laboratory in Animal Behavior, Laboratory in Evolution, Evolution, Parasite-host Interactions, Undergraduate Research Project