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Showing 1 to 5 of 5 for “"pectoral spines"”.
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A Comparison of the Pectoral Spines in Virginia Catfishes
Catfish pectoral spines are an anti-predator defense mechanism. They can be bound or locked, making the fish harder to swallow, or used to produce distress calls by rubbing ridges on the dorsal process against a channel in the wall of the pectoral girdle. Growth of the pectoral spine and girdle …
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EFFECTS OF ALTERNATIVE PREY AS A BUFFER TO PREDATION OF CHANNEL CATFISH (ICTALURUS PUNCTATUS) BY LARGEMOUTH BASS (MICROPTERUS SALMOIDES)
Channel catfish have pectoral spines that lock to defend against gape-limited predators such as largemouth bass. Previous work indicated that spines increase survival of channel catfish exposed to bass but did not determine whether bass avoid catfish if less dangerous species are available. We …
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Sound Production in Two Loricariid Catfishes
<p>Many families of catfish produce sounds via pectoral spine stridulation and/or swim bladder compression using sonic muscles attached to the swim bladder. The sound production capabilities and characteristics in Loricariidae, the largest catfish family, have not been well examined. Sounds …
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Population Characteristics and Habitat Selection of Channel Catfish (Ictalurus punctatus) in the Lower James River, South Dakota
… James River, South Dakota. Length, weight, and pectoral spines were collected from 327 channel catfish captured with hoop nets and trotlines. The mean hoop net catch rate (l.35 ± 0.25) was lower than mean catch rates for other rivers in the Midwest, indicating that a low density population …
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The Aging of Two Madtom Catfish Species From a Southwest Missouri Stream
… Ozark madtom (Noturus albater), were aged using pectoral spines and otoliths. Validation was provided using marginal increment analysis, a technique which monitors the seasonal progression of otolith annulus formation in the population throughout the year. Spine age estimates were compared to …