Spectral sensitivity of larval and juvenile coral reef fishes: implications for feeding in a variable light environment
Spectral sensitivity of larval and juvenile coral reef fishes: implications for feeding in a variable light environment
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DOI：
10.3354/meps214267
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发表时间：
2001-01-01
影响因子：
2.5
通讯作者：
Shand, J
中科院分区：
文献类型：
--
作者：
Job, SD;Shand, J
利用摄食行为研究了3种珊瑚礁鱼类（天竺鲷科Apogon compressus、波鱼科Pomacentrus amboinensis和双刺豆腐柴科Pomacentridae）仔稚鱼的光谱敏感性。个体发育和分类的光谱敏感性的差异，确定了最低的光强度，幼虫和少年可以在12个限制波长带355和650 nm之间的猎物。建立了色作用光谱，发现三种化合物的最大灵敏波长λ（max）和中值波长λ（50）均位于500 nm附近。在生长过程中，3种植物的敏感性都有所增加，其中A. compressus在沉降前变得最敏感。光谱敏感性在个体发育过程中向长波长方向的变化发生在安包山杨和双刺山杨中，而在南方山杨中没有发生。压缩。光谱效率（光子捕获的波长依赖性效率）的建模为富营养和贫营养的珊瑚礁沃茨（杰洛夫氏类型海洋IA，海洋III和沿海1）在2个不同的光学深度。光谱效率是最高的中间珊瑚礁水型（JOIII）在所有3个仔鱼类群在整个早期个体发育，无论水深。结果表明，幼虫将能够在广泛的珊瑚礁水域类型和深度中觅食。
The spectral sensitivity of larval and juvenile stages of 3 species of coral reef fishes, Apogon compressus (Apogonidae), Pomacentrus amboinensis (Pomacentridae) and Premnas biaculeatus (Pomacentridae) has been investigated using feeding behaviour. Ontogenetic and taxonomic differences in spectral sensitivity were determined by establishing the minimum light intensity at which larvae and juveniles could strike prey at 12 restricted wavelength bands between 355 and 650 nm. Following construction of chromatic action spectra, the wavelength of maximum sensitivity (lambda (max)) and the median wavelength (lambdaP(50)) Of the 3 species were found to be located close to 500 nm. All 3 species increased in sensitivity during growth, with A. compressus becoming the most sensitive prior to settlement. Ontogenetic shifts in spectral sensitivity towards longer wavelengths occurred in P. amboinensis and P, biaculeatus, but not in A. compressus. Spectral efficiency (wavelength-dependent efficiency of photon capture) was modelled for eutrophic and oligotrophic coral reef waters (Jerlov types Oceanic IA, Oceanic III and Coastal 1) at 2 different optical depths. Spectral efficiency was highest in the intermediate coral reef water type (JOIII) in all 3 larval fish taxa throughout early ontogeny, regardless of water depth. The results imply that the larvae would be able to feed across a broad spectrum of coral reef water types and depths.