Satoh Aya, Kinoshita Michiyo, Arikawa Kentaro
Laboratory of Neuroethology, Sokendai (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan.
Laboratory of Neuroethology, Sokendai (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan
J Exp Biol. 2016 Dec 15;219(Pt 24):3857-3860. doi: 10.1242/jeb.148064. Epub 2016 Oct 6.
We investigated colour discrimination and learning in adult males of the nocturnal cotton bollworm moth, Helicoverpa armigera, under a dim light condition. The naive moths preferred blue and discriminated the innately preferred blue from several shades of grey, indicating that the moths have colour vision. After being trained for 2 days to take nectar at a yellow disc, an innately non-preferred colour, moths learned to select yellow over blue. The choice distribution between yellow and blue changed significantly from that of naive moths. However, the dual-choice distribution of the trained moths was not significantly biased to yellow: the preference for blue is robust. We also tried to train moths to grey, which was not successful. The limited ability to learn colours suggests that H armigera may not strongly rely on colours when searching for flowers in the field, although they have the basic property of colour vision.
我们在弱光条件下研究了夜蛾棉铃虫成年雄性个体的颜色辨别和学习能力。未接触过的棉铃虫偏好蓝色，且能从几种灰色色调中辨别出天生偏好的蓝色，这表明棉铃虫具有色觉。在经过2天训练，使其在黄色圆盘上取食花蜜（黄色是一种天生不受偏好的颜色）后，棉铃虫学会了选择黄色而非蓝色。黄色和蓝色之间的选择分布与未接触过的棉铃虫相比发生了显著变化。然而，经过训练的棉铃虫在双色选择中对黄色的偏向并不显著：对蓝色的偏好仍然很强。我们还尝试训练棉铃虫选择灰色，但未成功。这种有限的颜色学习能力表明，尽管棉铃虫具有色觉的基本特性，但它们在野外寻找花朵时可能并不强烈依赖颜色。
