Crocodylus niloticus (Crocodilia) is highly sensitive to water surface waves.
Crocodylus niloticus (Crocodilia) is highly sensitive to water surface waves.
复制标题
尼罗鳄(Crocodilia)对水面波浪高度敏感
DOI:
10.1016/j.zool.2015.03.004
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发表时间:
2015
期刊:
影响因子:
2
通讯作者:
Bleckmann H
中科院分区:
文献类型:
--
作者:
Grap NJ;Monzel A;Kohl T;Bleckmann H
Crocodiles show oriented responses to water surface wave stimuli but up to now behavioral thresholds are missing. This study determines the behavioral thresholds of crocodilians to water surface waves. Nile crocodiles (Crocodylus niloticus) were conditioned to respond to single-frequency water surface wave stimuli (duration 1150 ms, frequency 15, 30, 40, 60 and 80 Hz), produced by blowing air onto the water surface. Our study shows thatC. niloticusis highly sensitive to capillary water surface waves. Threshold values decreased with increasing frequency and ranged between 10.3 μm (15 Hz) and 0.5 μm (80 Hz) peak-to-peak wave amplitude. For the frequencies 15 Hz and 30 Hz the sensitivity of one spectacled caiman (Caiman crocodilus) to water surface waves was also tested. Threshold values were 12.8 μm (15 Hz) down to 1.76 μm (30 Hz), i.e. close to the threshold values ofC. niloticus. The surface wave sensitivity of crocodiles is similar to the surface wave sensitivity of semi-aquatic insects and fishing spiders but does not match the sensitivity of surface-feeding fishes which is higher by one to two orders of magnitude.
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DOI:
--
发表时间:
1972
期刊:
Journal of Comparative Physiology
影响因子:
--
作者:
K. Wiese
通讯作者:
K. Wiese
DOI:
--
发表时间:
1993
期刊:
--
影响因子:
--
作者:
G. Grigg;C. Gans
通讯作者:
G. Grigg;C. Gans
DOI:
--
发表时间:
1982
期刊:
Journal of Comparative Physiology
影响因子:
--
作者:
H. Bleckmann;E. Schwartz
通讯作者:
E. Schwartz
DOI:
--
发表时间:
1970
期刊:
Zeitschrift für Morphologie der Tiere
影响因子:
--
作者:
E. Schwartz
通讯作者:
E. Schwartz
DOI:
--
发表时间:
1980
期刊:
Die Naturwissenschaften
影响因子:
--
作者:
Horst H. Lang
通讯作者:
Horst H. Lang