期刊
JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
卷 207, 期 3, 页码 437-448出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00359-021-01486-2
关键词
Dim-light vision; Simple eye; Sensitivity; Visual acuity; Spatial acuity
资金
- Royal Society of New Zealand Marsden Fund [M1096, M1079]
- National Geographic Society [8676-09, WW-146R-17]
- US National Institutes of Health [R01-AI077722]
- FCT/MCTES [UIDP/50017/2020 +UIDB/50017/2020]
- national funds (OE), through FCT
- Austrian Science Fund (FWF) [M1079, M1096] Funding Source: Austrian Science Fund (FWF)
Jumping spiders rely on four pairs of eyes for visual predation, with one pair responsible for color and high spatial acuity vision, and the other three pairs for motion detection. The Algerian spider adapts to hunting in low light environments, maintaining sensitivity and spatial acuity while having effective light protection.
Jumping spiders (Salticidae) are diurnal visual predators known for elaborate, vision-mediated behaviour achieved through the coordinated work of four pairs of camera-type eyes. One pair ('principal' eyes) is responsible for colour and high spatial acuity vision, while three pairs ('secondary' eyes) are mostly responsible for motion detection. Based on its unusual capacity to visually discriminate specific prey in very low, but also under bright light settings, we investigated the structure of the principal and one pair of secondary eyes (antero-lateral eyes) of Cyrba algerina to determine how these eyes achieve the sensitivity, while maintaining spatial acuity, needed to sustain behaviour in low light. Compared to salticids that live in bright light, the principal eyes of C. algerina have a short focal length, and wide contiguous twin rhabdomeres that support optical pooling, overall favouring sensitivity (0.39 mu m(2)), but without fully compromising acuity (12.4 arc min). The antero-lateral eye retinae have large receptors surrounded by pigment granules, providing effective shielding from scattered light. These adaptations may be beneficial for a xeric salticid species with a 'blended' lifestyle: generally living and hunting under stones in the dark, but sometimes venturing above them, in dramatically different light conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据