{"refrec":{"BRefID":217634,"RR":"<b>Parmentier, E.; Fabri, G.; Kaatz, I.; Decloux, N.; Planes, S.; Vandewalle, P.</b> (2010). Functional study of the pectoral spine stridulation mechanism in different mochokid catfishes. <i>J. Exp. Biol. 213(7)</i>: 1107-1114. <a href=\"http://dx.doi.org/10.1242/jeb.039461\" target=\"_blank\">dx.doi.org/10.1242/jeb.039461</a>","BEntID":209379,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Exp. Biol. 213(7)</i>: 1107-1114. <a href=\"https://dx.doi.org/10.1242/jeb.039461\" target=\"_blank\">https://dx.doi.org/10.1242/jeb.039461</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Parmentier, E.; Fabri, G.; Kaatz, I.; Decloux, N.; Planes, S.; Vandewalle, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Parmentier, E. <i>et al.</i>","Englishabstract":"Mochokidae are able to produce pectoral spine stridulation sounds. During sound production, high speed videos were used to study the pectoral fin movements to identify the mechanisms involved. A call consisted of a series of pulses and occurred during a spine sweep, which was in fact made up of a series of jerky movements. The morphology of the pectoral spines and associated muscles was also observed in different species. The contractions of adductor profundus and superficial adductor allows adduction and abduction movements (sweep) of the spine, respectively. Simultaneously, the contraction of the arrector ventralis or the arrector 3 of the pectoral spine allows the pulling and pressing the ridges of the dorsal process, against the rough lateral face of the spinal fossa. This results in the rubbing of the ridges of the dorsal process, producing sounds. 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