Juvenile socio-ecological environment shapes material technology in nest-building birds
Juvenile socio-ecological environment shapes material technology in nest-building birds
复制标题
DOI：
10.1093/beheco/araa027
复制
发表时间：
2020-07-01
影响因子：
2.4
通讯作者：
Guillette, Lauren M.
中科院分区：
文献类型：
--
作者：
Breen, Alexis J.;Lovie, Keren E.;Guillette, Lauren M.
动物材料技术的变化，例如工具的使用和巢穴的建造，被认为部分是由早期生命社会生态环境（即周围的人和事物）的差异引起的，但这种发展假设尚未得到证实。我们使用严格控制的发育范式来确定成年斑马雀和/或生命早期的原材料获取是否会影响实验室饲养的斑马雀Taeniopygia guttata在性成熟时的首次筑巢。我们发现，幼年鸟同时接触不相关的成鸟和一种颜色的原材料，导致新手筑巢者大多数（75%）更喜欢这种颜色的材料，而不是出生巢或新颜色的材料，而幼鸟缺乏接触不相关的成鸟和原材料的机会，导致新手筑巢者开始和完成筑巢的速度分别降低了 4 倍和近 3 倍。与预期相反，幼年斑马雀和成年斑马雀处理原材料所花费的时间似乎都没有对斑胸草雀首次筑巢产生早期影响，这表明成年斑胸草雀的存在可能足以推动动物材料技术的发展。这些数据共同表明，青少年社会生态环境可以引发动物材料技术至少两个关键方面（材料偏好和建造速度）的变化，揭示了技术进步的潜在强大发展窗口。因此，要了解动物材料技术的选择，必须考虑早期生命环境。
Variation in animal material technology, such as tool use and nest construction, is thought to be caused, in part, by differences in the early-life socio-ecological environment-that is, who and what is around-but this developmental hypothesis remains unconfirmed. We used a tightly controlled developmental paradigm to determine whether adult and/or raw-material access in early life shape first-time nest construction in laboratory-bred zebra finches Taeniopygia guttata at sexual maturity. We found that juvenile access to both an unrelated adult and raw material of one color led to a majority preference (75%) by novice builders for this color of material over that for either natal-nest or novel-colored material, whereas a lack of juvenile access to both an unrelated adult and raw material led to a 4- and nearly 3-fold reduction in the speed at which novice builders initiated and completed nest construction, respectively. Contrary to expectation, neither the amount of time juveniles nor their adult groupmate spent handling the raw material appear to drive these early-life effects on zebra finches' first-time nest construction, suggesting that adult presence might be sufficient to drive the development of animal material technology. Together these data show that the juvenile socio-ecological environment can trigger variation in at least two critical aspects of animal material technology (material preference and construction speed), revealing a potentially powerful developmental window for technological advancement. Thus, to understand selection on animal material technology, the early-life environment must be considered.