Bombus terrestris’in Yayılma Performansı, Çiçek Tercihi ile İlişkisi ve Doğadaki Uyumu

Year 2005, Volume: 05 Issue: 4, 145 - 150, 29.11.2005

Nigel E. Raıne Lars Chıttka

Abstract

Bombus kolonileri mor (arı UV-mavi) ve mavi (arı-mavi) çiçekler üzerinde öğrenilmemiş tercihleri konusunda önemli farklılıklar göstermektedir. Laboratuvar’da maviye göre mor’u doğuştan daha çok tercih eder. Bombus kolonileri doğada alan koşullarında verilen zaman diliminde daha fazla nektar işlemiştir. Bu korelasyon (rs = 0.82) güçlü olsa da %5 (p = 0.089) seviyesinde istatistiki olarak önemli olmamış, fakat %10 seviyesinde önemli görülmüştür. Bu yayılma performansındaki artış evrimsel açıdan anlamlıdır, çünkü çalışmanın yapıldığı lokal bölgede mor renkli çiçekler diğer renk çiçeklerden 4 kat daha fazla şeker (nektarın içinde) içermektedir. Gerçi mor çiçekleri çok tercih eden koloniler nektar toplamada daha etkili olmasına rağmen, besin bulma durumunda bu artış sayısal olarak kraliçe üretimine ve doğadaki genel uyuma tahmin edilir şekilde yansımamıştır

Keywords

Öğrenilmemiş renk tercihleri, doğuştan, uyumsal önem, Bombus arısı, öğrenilmemiş renk, renk

Colour Preferences in Relation to the Foraging Performance and Fitness of the Bumblebee Bombus terrestris

Abstract

Bumblebee (Bombus terrestris) colonies showed significant variation in their unlearned preference for violet (bee UV-blue) over blue (bee blue) flowers. Bumblebee colonies with a higher average innate preference for violet (over blue) in the laboratory harvested more nectar per unit time under field conditions. Although this correlation was strong (rs=0.82), it narrowly missed statistical significance at the 5% level (p=0.089), but was significant at the 10% level. This increase in foraging performance appears to make evolutionary sense because, on average, violet flower species contain around four times the amount of sugar (in nectar) as flowers of any other colour in the local area. Interestingly, although colonies with a stronger preference for violet were more effective at nectar foraging, this increase in colony food availability was not predictably translated into investment in fitness, quantified as gyne (new queen) production.

Keywords

unlearned colour preferences, innate, adaptive significance, bumble bee, colour naïve, color

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