Recently,several rockfish species(genus Sebastes)have been reported to be soniferous.To determine whether an additional rockfish species produces sounds,passive acoustic recordings were analyzed from captive marbled r...Recently,several rockfish species(genus Sebastes)have been reported to be soniferous.To determine whether an additional rockfish species produces sounds,passive acoustic recordings were analyzed from captive marbled rockfish(Sebastiscus marmoratus)during the non-spawning season.Three distinct sounds were identified based on frequency features.The common characteristics among all sounds were low frequency(below 300 Hz)and rapidly dampened pulses consisting of 3–5 acoustic energy cycles.During free-swimming conditions in the canvas tank,the fish produced voluntary sounds with lower frequencies than the disturbance sounds produced by individuals during prodding.Two types of sounds were identified in the disturbance context:one type consists of single or double pulses with two peak frequencies,and another type consists of a series of pulses with a single peak frequency.These results suggest that specific-species and behavior-associated sounds are potentially useful in passive acoustical surveys to monitor rockfish populations and distributions remotely.展开更多
Cephalopods(octopus,squid and cuttlefish)are some of the most intriguing molluscs,and they represent economically important commercial marine species for fisheries.Previous studies have shown that cephalopods are sens...Cephalopods(octopus,squid and cuttlefish)are some of the most intriguing molluscs,and they represent economically important commercial marine species for fisheries.Previous studies have shown that cephalopods are sensitive to underwater particle motion,especially at low frequencies in the order of 10 Hz.The present paper deals with quantitative modeling of the statocyst system in three cephalopod species:Octopus vulgaris,Sepia officinalis and Loligo vulgaris.The octopus’s macula/statolith organ was modeled as a 2nd-order dynamic oscillator using parameter values estimated from scanning electron micrograph images.The modeling results agree reasonably well with experimental data(acceleration threshold)in the three cephalopod species.Insights made from quantitative modeling and simulating the particle motion sensing mechanism of cephalopods elucidated their underwater particle motion detection capabilities.Sensitivity to emerging environmental issues,such as low frequency noise caused by near-shore wind farms and increasing levels of carbon dioxide in the ocean,and sensitivity to sounds produced by impending landslides were investigated in octopus using the model.展开更多
ulogy,Chinese Academy of Sciences,Beijing 100080,People’s Republic of Chin The papers presented in this special issue arose from a symposium that took place from 28 November to 1 December 2007 at the Shanghai Ocean U...ulogy,Chinese Academy of Sciences,Beijing 100080,People’s Republic of Chin The papers presented in this special issue arose from a symposium that took place from 28 November to 1 December 2007 at the Shanghai Ocean University to celebrate the inauguration of the Institute for Marine Biosystem and Neurosciences.The symposium was attended by 158 people,the majority of whom were from leading universities and institutes across China.展开更多
基金s supported by the 973 Program(2011CB111608)the National Natural Science Foundation of China(41406150)+1 种基金the Innovation Program of the Shanghai Municipal Education Commission(12YZ133)the Startup Foundation for Doctors of Shanghai Ocean University。
文摘Recently,several rockfish species(genus Sebastes)have been reported to be soniferous.To determine whether an additional rockfish species produces sounds,passive acoustic recordings were analyzed from captive marbled rockfish(Sebastiscus marmoratus)during the non-spawning season.Three distinct sounds were identified based on frequency features.The common characteristics among all sounds were low frequency(below 300 Hz)and rapidly dampened pulses consisting of 3–5 acoustic energy cycles.During free-swimming conditions in the canvas tank,the fish produced voluntary sounds with lower frequencies than the disturbance sounds produced by individuals during prodding.Two types of sounds were identified in the disturbance context:one type consists of single or double pulses with two peak frequencies,and another type consists of a series of pulses with a single peak frequency.These results suggest that specific-species and behavior-associated sounds are potentially useful in passive acoustical surveys to monitor rockfish populations and distributions remotely.
基金supported by the National Science Foundation under Grant No.CMMI-1031414.
文摘Cephalopods(octopus,squid and cuttlefish)are some of the most intriguing molluscs,and they represent economically important commercial marine species for fisheries.Previous studies have shown that cephalopods are sensitive to underwater particle motion,especially at low frequencies in the order of 10 Hz.The present paper deals with quantitative modeling of the statocyst system in three cephalopod species:Octopus vulgaris,Sepia officinalis and Loligo vulgaris.The octopus’s macula/statolith organ was modeled as a 2nd-order dynamic oscillator using parameter values estimated from scanning electron micrograph images.The modeling results agree reasonably well with experimental data(acceleration threshold)in the three cephalopod species.Insights made from quantitative modeling and simulating the particle motion sensing mechanism of cephalopods elucidated their underwater particle motion detection capabilities.Sensitivity to emerging environmental issues,such as low frequency noise caused by near-shore wind farms and increasing levels of carbon dioxide in the ocean,and sensitivity to sounds produced by impending landslides were investigated in octopus using the model.
文摘ulogy,Chinese Academy of Sciences,Beijing 100080,People’s Republic of Chin The papers presented in this special issue arose from a symposium that took place from 28 November to 1 December 2007 at the Shanghai Ocean University to celebrate the inauguration of the Institute for Marine Biosystem and Neurosciences.The symposium was attended by 158 people,the majority of whom were from leading universities and institutes across China.
