scholarly journals Comparative sound detection abilities of four decapod crustaceans

2021 ◽  
Author(s):  
C.A. Radford ◽  
K. Tay ◽  
M.L. Goeritz
Keyword(s):  
Particle Acceleration ◽  
Auditory Evoked Potentials ◽  
Critical Role ◽  
Antennal Segment ◽  
Life History Strategies ◽  
Underwater Sound ◽  
Decapod Crustaceans ◽  
Sound Perception ◽  
Animal Group ◽  
Sound Detection

Sound perception and detection in decapod crustaceans is surprisingly poorly understood, even though there is mounting evidence for sound playing a critical role in many life history strategies. The suspected primary organ of sound perception are the paired statocysts at the base of the first antennal segment. To better understand the comparative sound detection of decapods, auditory evoked potentials were recorded from the statocyst nerve region of four species (Leptograpsus variegate, Plagusia chabrus, Ovalipes catharus, Austrohelice crassa) in response to two different auditory stimuli presentation methods, shaker table (particle acceleration) and underwater speaker (particle acceleration and pressure). The results showed that there was significant variation in the sound detection abilities between all four species. However, exposure to the speaker stimuli increased all four species sound detection abilities, both in terms of frequency bandwidth and sensitivity, compared to shaker table derived sound detection abilities. This indicates that there is another sensory mechanism in play as well as the statocyst system. Overall, the present research provides comparative evidence of sound detection in decapods and indicates underwater sound detection in this animal group was even more complex than previously thought.

Sagnac interferometer for underwater sound detection: noise properties

1989 ◽  
Vol 14 (20) ◽  
pp. 1152 ◽  
Author(s):  
Kjell Kråkenes ◽  
Kjell Bløtekjaer
Keyword(s):  
Underwater Sound ◽  
Sagnac Interferometer ◽  
Sound Detection

scholarly journals Sound detection by the longfin squid (Loligo pealeii) studied with auditory evoked potentials: sensitivity to low-frequency particle motion and not pressure

2010 ◽  
Vol 213 (21) ◽  
pp. 3748-3759 ◽  
Author(s):  
T. A. Mooney ◽  
R. T. Hanlon ◽  
J. Christensen-Dalsgaard ◽  
P. T. Madsen ◽  
D. R. Ketten ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Particle Motion ◽  
Auditory Evoked Potentials ◽  
Low Frequency ◽  
Sound Detection ◽  
Loligo Pealeii

Research of a Novel MEMS Vector Hydrophone Based on a New Package Process

2009 ◽  
Vol 610-613 ◽  
pp. 567-572
Author(s):  
Kai Rui Zhang ◽  
Qiu Zhu Li ◽  
Guo Wen Liu ◽  
Xiao Jun Shi
Keyword(s):  
Lateral Line ◽  
Amplification Factor ◽  
Directional Pattern ◽  
New Method ◽  
Maximum Pressure ◽  
Acoustic Sensors ◽  
Test Results ◽  
Underwater Sound ◽  
Vector Hydrophone ◽  
Sound Detection

A new method for the MEMS die package process was reported. Using the method of bionic package, a novel MEMS vector hydrophone was fabricated from a typical mass-beam accelerometer structure. According to the auditory principle of fish’s lateral line and its nature’s fundamental acoustic sensors-stereocilia, a rigidity cylinder was fixed on the center of the mass as a stereocilia, and the sensitivity structure of the hydrophone was obtained. By means of a specific package process, the sensor was fabricated properly for the underwater sound detection application. From the test results of the sensor, we can see that, this vector hydrophone has a receiving sensitivity of -165dB (0dB=1V/µPa, the amplification factor of the preamplifier is 100.) and a good directional pattern in form of “8”-shape. The hydrophone can work well under the maximum pressure of 2MPa.

scholarly journals Hearing capabilities and behavioural response of sea lamprey (Petromyzon marinus) to low-frequency sounds

2019 ◽  
Vol 76 (9) ◽  
pp. 1541-1548 ◽  
Author(s):  
Megan F. Mickle ◽  
Scott M. Miehls ◽  
Nicholas S. Johnson ◽  
Dennis M. Higgs
Keyword(s):  
Auditory Evoked Potentials ◽  
Petromyzon Marinus ◽  
Low Frequency ◽  
Sea Lamprey ◽  
Teleost Fishes ◽  
Management Scenarios ◽  
General Increase ◽  
Hearing Ability ◽  
Sound Detection ◽  
Lamprey Species

Hearing ability is well studied across teleost fishes in general, and vertebrates more broadly, but little is known about sound detection abilities of lampreys (Petromyzontiformes), a basal extant vertebrate group. The sea lamprey (Petromyzon marinus) is a destructive invader of the Laurentian Great Lakes, while numerous lamprey species (including the sea lamprey) are imperiled in their native ranges. In both management scenarios, behavioral manipulation tactics to control movement and distribution are desired. Therefore, we describe the hearing ability and behavioral responses of adult and juvenile sea lamprey to sound to reveal how hearing may have evolved in vertebrates and determine possible management applications. Based on auditory evoked potentials, sea lamprey detected tones of 50–300 Hz with equal sensitivity, but did not detect sounds above 300 Hz. In a laboratory bioassay, sea lamprey behaviorally responded to sound range of 50–200 Hz, with a general increase in swimming and a decrease in resting behaviours at both juvenile and adult stages relative to no-sound controls. To our knowledge, this is the first test of lamprey hearing, and the results support that sound may be a means to modify lamprey behaviour for management purposes.

Sonar Data Classification Using a New Algorithm Inspired from Black Holes Phenomenon

2018 ◽  
Vol 8 (2) ◽  
pp. 25-39
Author(s):  
Mohamed Elhadi Rahmani ◽  
Abdelmalek Amine ◽  
Reda Mohamed Hamou
Keyword(s):  
Black Holes ◽  
Computer Science ◽  
Sound Propagation ◽  
Main Idea ◽  
Sound Waves ◽  
Underwater Sound ◽  
Light Waves ◽  
Sound Detection ◽  
Water Based ◽  
Original Works

Sound Navigation and Ranging (Sonar) is underwater sound detection used in boats or submarines to navigate, communicate with or detect objects under the surface of water based on sound propagation. It is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves. Based on signal data obtained from sonar, this article presents a new heuristic approach inspired from black holes' phenomenon proposed by Schwarzschild, it has been applied to the classification sonar returns from two undersea targets, a metal cylinder and a similarly-shaped rock. Results are very satisfied (almost 83% of accuracy) compared to original works. in manner that encourage to keep working on paper, the main idea of this article is to benefit from the power of nature to solve complex problems in computer science

Effect of spawning day and temperature on salmon emergence: interpretations of a growth model for Methow River chinook

2001 ◽  
Vol 58 (5) ◽  
pp. 943-949 ◽  
Author(s):  
W Nicholas Beer ◽  
James J Anderson
Keyword(s):  
Oncorhynchus Tshawytscha ◽  
Critical Role ◽  
Early Life History ◽  
Early Spring ◽  
Life History Strategies ◽  
Spatial And Temporal Patterns ◽  
River Temperature ◽  
Trade Offs ◽  
Wide Range ◽  
Temperature Dependent Model

A mechanistic temperature-dependent model for preemergent growth coupled with spawning and river temperature data is used to evaluate early life history strategies for chinook salmon (Oncorhynchus tshawytscha) in the Methow River, Washington, U.S.A. Since the model provides a predictable coupling between time of spawning and fry emergence, it helps explain the spatial and temporal patterns observed for the sympatric stocks. The model suggests that progeny of August-spawning chinook in upper river habitats emerge at button-up (no visible yolk sac) over a wide range of days in the early spring. The eggs grow efficiently, which maximizes fry mass. The progeny of October-spawning downstream chinook can exploit a wide range of habitats in the river because their emergence mass is not sensitive to location in the river, but the adults must spawn later in the season to avoid summer high temperatures. Late spawning forces fry to emerge prior to button-up to avoid scouring flows but synchronizes their emergence times. The trade-offs between the spawning strategies of these two salmon runs are complex and the seasonal and spatial distribution of temperatures plays a critical role in these trade-offs.

Dispersal-limited detritivores in fire-prone environments: persistence and population structure of terrestrial amphipods (Talitridae)

2016 ◽  
Vol 25 (7) ◽  
pp. 753 ◽  
Author(s):  
L. Menz ◽  
H. Gibb ◽  
N. P. Murphy
Keyword(s):  
Population Structure ◽  
Fire Severity ◽  
Critical Role ◽  
Life History Strategies ◽  
Taxonomic Resolution ◽  
Genetic Analyses ◽  
Limited Dispersal ◽  
In Fire ◽  
The Impact

Invertebrate detritivores play a critical role in the decomposition of litter, an important component of wildfire fuel. Knowledge of invertebrate response to fire is often hampered by taxonomic resolution; however, genetic species identification can enable analysis of fine-scale assemblages and the interaction between dispersal and population recovery. In this study, we ask: do terrestrial amphipod assemblages differ following increasing fire severities and does population structure indicate in situ survival or recolonisation following severe fires? Using seven replicate sites over three fire severities, we measured amphipod abundance at the site of the catastrophic 2009 ‘Black Saturday’ fires in south-east Australia. Genetic analyses to distinguish species and population structure revealed 16 species. Populations of Arcitalitrus sylvaticus were highly structured, suggesting limited dispersal. Amphipod abundance and species richness were not affected by fire severity 3 years after fire. Localised population structure within A. sylvaticus suggests that in situ survival enabled amphipods to repopulate severely burnt sites. The genetic analyses used in this study enabled the detection of unrecognised diversity and population structure in these detritivores. With many detritivores showing similar life history strategies, studies that combine a genetic and ecological approach are essential for understanding the impact of fire on litter decomposition.

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