Results 11 to 20 of about 5,220 (212)

Adaptive Steered Frequency–Wavenumber Analysis for High-Frequency Source Localization in Shallow Water [PDF]

open access: yesSensors
In shallow-water environments, source localization often suffers from reduced performance in conventional array signal processing techniques for frequency bands above 1 kHz due to environmental mismatch.
Y. H. Choi   +3 more
doaj   +2 more sources

The complete mitochondrial genome of Alpheus digitalis De Haan, 1844 (Decapoda: Alpheidae) [PDF]

open access: yesMitochondrial DNA. Part B. Resources
The snapping shrimp Alpheus digitalis De Haan, 1844 represents a commercially valuable fishery resource within the family Alpheidae. In this study, we sequenced and characterized the complete mitochondrial genome of A. digitalis, followed by phylogenetic
Shuyi Zhang, Youling Ye, Heshan Lin
doaj   +2 more sources

Bioimaging marine crustacean brain: quantitative comparison of micro-CT preparations in an Alpheid snapping shrimp [PDF]

open access: yesFrontiers in Neuroscience
Non-invasive bioimaging techniques like X-ray micro-computed tomography (μCT), combined with contrast-enhancing techniques, allow the 3D visualization of the central nervous system in situ, without the destruction of the sample.
Lucille Chapuis   +3 more
doaj   +2 more sources

Marine reef soundscape monitoring with fiber-optic distributed acoustic sensing [PDF]

open access: yesScientific Reports
Coral reefs are essential marine ecosystems that support a vast array of biodiversity and provide numerous benefits, including fisheries, tourism, and coastal protection. However, these ecosystems are increasingly threatened by various factors, including
Talha Ariff   +8 more
doaj   +2 more sources

Embryo production in the sponge-dwelling snapping shrimp Synalpheus apioceros (Decapoda, Alpheidae) from Bocas del Toro, Panama [PDF]

open access: yesZooKeys, 2014
Caridean shrimps of the genus Synalpheus are abundant and widely distributed in tropical and subtropical regions, but knowledge of their reproductive biology remains scarce.
Adriana Rebolledo   +3 more
doaj   +2 more sources

Snapping behaviour in intraspecific agonistic encounters in the snapping shrimp (Alpheus heterochaelis)

open access: yesJournal of Biosciences, 1998
During intraspecific agonistic encounters in snapping shrimp (Alpheus heterochaelis) the behaviour of the snapper, emitting a fast water jet by very rapid closure of the large modified snapper claw, and the receiver was analysed by single frame video analysis before, during, and after the snap.
Jens Herberholz
exaly   +2 more sources

Circadian and Tidal Changes in Snapping Shrimp (Alpheus brevicristatus) Sound Observed by a Moored Hydrophone in the Coastal Sea of Western Jeju

open access: yesApplied Sciences, 2022
Numerous studies have evaluated the acoustic characteristics of soniferous snapping shrimp, but a few are based on long-term mooring measurements. In this study, underwater ambient noise signals were collected from a hydrophone moored 10 m from the sea ...
Inyong Jeong, Dong-Guk Paeng
doaj   +1 more source

Semantic segmentation-based whistle extraction of Indo-Pacific Bottlenose Dolphin residing at the coast of Jeju island

open access: yesEcological Indicators, 2022
Passive acoustic monitoring (PAM) is commonly utilized to monitor cetacean species’ distribution, abundance, and behavior. The demand for automated methods to detect and extract cetacean vocalizations from acoustic data has increased in the last few ...
Changzhu Jin   +3 more
doaj   +1 more source

Sounds of a changing sea: Temperature drives acoustic output by dominant biological sound-producers in shallow water habitats

open access: yesFrontiers in Marine Science, 2022
The ocean’s soundscape is fundamental to marine ecosystems, not only as a source of sensory information critical to many ecological processes but also as an indicator of biodiversity and habitat health. Yet, little is known about how ecoacoustic activity
Ashlee Lillis   +2 more
doaj   +1 more source

Snapping Shrimp and Their Crustaceous Cacophony

open access: yesFrontiers for Young Minds, 2022
We humans are a noisy bunch. Our sounds fill the land and air around us, and even the oceans and seas. But we are not the only ones filling the sea with sound. Tiny snapping shrimp, also known as pistol shrimp, are some of the loudest animals in the ocean! They capture their prey by blasting it with a powerful shockwave from an enlarged claw. While the
Cian Jones   +2 more
openaire   +1 more source

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