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Showing 1 to 14 of 14 for “"swimbladder"”.
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MORPHOLOGY, MATERIAL AND VIBRATORY PROPERTIES OF THE SWIMBLADDER IN THE CARP, CYPRINUS CARPIO
The carp Cyprinus carpio has a two-chambered swimbladder and excellent hearing. I explored the hypothesis that the anterior chamber, which connects to Weberian ossicles, is adapted for hearing by testing both chambers for material properties. I also determined displacement and auditory responses to …
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Material and Acoustic Properties of Swimbladders of Tilapia and Channel Catfish
Acoustically, teleost swimbladders have been considered resonant underwater bubbles. Contrary results indicating that bladders are tuned less sharply than such a bubble have been explained by damping of surrounding fish tissue. Recent findings in toadfish and weakfish, however, suggest that the …
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Instantaneous continental-shelf scale sensing of cod with Ocean Acoustic Waveguide Remote Sensing (OAWRS)
… were also measured from which we estimated the swimbladder resonance frequencies of local cod via a harmonic oscillator model that includes the effects of damping, the cod's swim bladder air volume at a given neutral buoyancy depth as well as changes to this volume for deviations from neutral …
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Evaluation of the biological feasibility of white stumpnose, Rhabdosargus globiceps, as a potential aquaculture candidate in South Africa
… bream larvae, suggesting that first feeding and swimbladder inflation was relatively successful. At 30 DPH the larvae reached a mean total length of 11.14 ± 0.44 mm. To determine the optimal rearing temperature and the effect of temperature on embryonic development eggs were placed at three …
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Global Conservation Status of Croaker and Drum (Family: Sciaenidae) and Role of the Maw Trade
… for consumption and the international maw (dried swimbladder) trade. Sciaenids exhibit a diverse array of life history characteristics, such as high fecundity, large body size, formation of spawning aggregations, and longevity. Some characteristics increase their susceptibility to anthropogenic …
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Helminth, protozoan and viral infections of the European eel, Anguilla anguilla
… England and Wales. Following dissection, the swimbladder nematode Anguillicoloidescrassus was found present in 245 specimens sampled from 20 locations (48.1%). Significantcorrelation was found between eel length and intensity of infection. However, no significantcorrelation between eel …
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The effect of attenuation from fish on long-range active and passive acoustic sensing in the ocean
… fish, where scattering losses from the fish swimbladders and damping from fish flesh is most significant. Negligible attenuation was observed in previous OAWRS and POAWRS surveys because the frequency of the acoustic signals was sufficiently far from the swimbladder resonance peak of the …
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The Effect of Attenuation from Fish on Long-Range Active and Passive Acoustic Sensing in the Ocean
… fish, where scattering losses from the fish swimbladders and damping from fish flesh is most significant. Negligible attenuation was observed in previous OAWRS and POAWRS surveys because the frequency of the acoustic signals was sufficiently far from the swimbladder resonance peak of the …
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Investigating group behavioral quantization of oceanic fish with Continental-shelf scale ocean-acoustic sensing
… OAWRS measurements, we capture a shift in swimbladder resonance peak correlated with the herring groups' up-slope spawning migration, enabling 3D spatial behavioral dynamics to be instantaneously inferred over thousands of square kilometers. We show that herring groups maintain near-bottom …
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Controlled cultivation techniques for the recovery of threatened fishes in Virginia
… obtained a mean hatch rate of 55 %, but lack of swimbladder inflation resulted in very poor survival of several batches of eggs. Larvae began feeding within 2 d of hatching, and survival rates of 50 to 90 % after 16 d were obtained when larvae were fed twice daily on a diet of brine shrimp …
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Ecological consequences of non-native parasites for native UK fishes.
… the structure and functioning of the host swimbladder. Whilst infections of E. briani and A. crassus had minimal effects on the body size, growth and condition of their hosts, chronic infections of B. acheilognathi did impact the growth and condition of C. carpio when measured over a 12 …
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High-resolution spatio-temporal quantification of fish predator-prey interactions over ecosystem scales with multispectral underwater sensing and optimality of human visual perception with natural daylight
… employs sensing frequencies at or near fish swimbladder resonance where the large differences across fish species are discernible. Such synoptic imaging at areal rates roughly 10^4 to 10^6 times greater than conventional methods may lead to more stable prediction of key ecosystem processes …
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The anaerobic resistance of Carassius auratus (L.)
… to anoxia (0.01 mg o2 1-1). 3. The oxygen in the swimbladder of c. auratus at 18°C and 5°C does not contribute significantly to its anaerobic resistance. 4. The effect of anoxia on the total metabolic rate of c. auratus was assessed by determining its heat production before, during and after …
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The anaerobic resistance of Carassius auratus (L.)
… to anoxia (0.01 mg o2 1-1). 3. The oxygen in the swimbladder of c. auratus at 18°C and 5°C does not contribute significantly to its anaerobic resistance. 4. The effect of anoxia on the total metabolic rate of c. auratus was assessed by determining its heat production before, during and after …