תוצאות חיפוש: עמוס בוסקילה

Intensive agricultural activity over large areas on earth, may lead to biodiversity loss. This loss may be mitigated by keeping natural and semi-natural patches within agricultural fields to allow the maintenance of biological diversity. Thie study was conducted in an agroecosystem comprised of small isolated patches nested within agricultural fields. 

Wasp offspring do seem to adjust their numbers in response to host starvation, but not strongly

Foraging behavior for hosts in parasitoids resembles that of predators with respect to finding, evaluating and manipulating of the prey. Host handling time may depend on the life history of the parasitoid and can be affected by oviposition experience. Additionally, handling time can be affected by host aggregation, species, size and state (parasitized or not). We studied handling times in the egg-larval parasitoid wasp Copidosoma koehleri. 

We modeled the possible effect of limited kin discrimination on larval aggression in polyembryonic wasps. In these organisms, each egg divides clonally to produce several genetically identical embryos inside an arthropod host. If more than one egg is laid inside a host (superparasitism), several clones compete for the host resources. In some species, a proportion of embryos develop into sterile soldier larvae that attack competitors inside the host.

Brood size has important implications for the fitness of both parents and offspring. In polyembryonic parasitoid wasps, each egg develops into many genetically identical embryos through clonal division inside the host. Thus, offspring may have the potential to affect brood size by adjusting the degree of embryonic division. We investigated the effect of relatedness between competing clones on brood size in the polyembryonic wasp Copidosoma koehleri.

המטרה המרכזית של המחקר הייתה לנתח את השפעות העיבוד החקלאי על חברת הזוחלים המתקיימת בכתמים הטבעיים והטבעיים למחצה הגובלים בשטחים החקלאים.