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- W1980734158 abstract "The goal of this study was to develop a passive acoustic survey protocol to identify spawning habitats of sciaenid fishes. Based on comparisons of recordings of captive-fish and field recordings of species-specific courtship sounds, spawning areas of red drum, weakfish, spotted sea trout, and silver perch (Family Sciaenidae) have been identified in Pamlico Sound, NC. Sciaenid sounds were recorded using either a portable hydrophone deployed from a boat or timer-operated sonobuoys. Loudness of mating choruses of weakfish and silver perch was strongly correlated with the abundance of pelagic sciaenid-type eggs, suggesting that these areas were used for spawning. Sonobuoy recordings showed that weakfish spawned only in the high-salinity habitats near the inlets, spotted sea trout spawned predominantly in the low-salinity areas near the river mouths, silver perch spawned in both high- and low-salinity areas, and red drum spawned most commonly in low-salinity areas, but only in September. The loudness of mating choruses of silver perch was diminished when vocalizing bottlenose dolphins were present in the area around sonobuoys or when recordings of signature whistles were played back. Such ‘‘acoustical avoidance’’ behavior causes variation in sound pressure levels and could lead to lower estimates of abundance of spawning adults when conducting passive acoustic surveys." @default.
- W1980734158 created "2016-06-24" @default.
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- W1980734158 date "2001-11-01" @default.
- W1980734158 modified "2023-09-29" @default.
- W1980734158 title "Using passive acoustics to monitor spawning of fishes in the drum family (Sciaenidae)" @default.
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- W1980734158 doi "https://doi.org/10.1121/1.4776939" @default.
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