31 KB1705 KB29 KB197820252004Duffels, HansGogala, MatijaKozina, UrošTrilar, Tomištevilka:54ISSN:0351-0077COBISSID_HOST:407541URN:URN:NBN:SI:doc-8RNSNFYRenPrirodoslovni muzej SlovenijeScopoliaacousticsakustikacicadafrekvenčna modulacijafrequency modulationMaua albiguttapetjesongškržadFrequency modulated song of the cicada Maua albigutta (Walker 1856) (Auchenorrhyncha: Cicadoidea) from South East Asia|The song and calling behaviour of the cicada Maua albigutta (Walker, 1856) from S.E. Asia is described. The majority of the investigations have been carried out in Endau Rompin National Park, Malaysia. The calling song comprises three main parts (A-C)with characteristic amplitude and, especially in the third part, with intense frequency modulation. The duration of the whole song is 38.2 +- 5.1 s and is often repeated without interruption many times in succession. Amplitude and frequency modulation is accompanied with movements of the abdomen and during frequency modulated calls also with changes of its shape. Songs from other localities (Kuala Lompat - Malaysia, Krui - Sumatra) are slightly different but clearly follow the same general pattern, and can be attributed with certainty to the same speciesV članku sta opisana napev in akustično vedenje škržada Maua albigutta (Walker, 1856) iz jugovzhodne Azije. Večino zvočnih in video posnetkov smo naredili v narodnem parku Endau Rompin v Maleziji. Pozivni napev sestoji iz zaporedja treh segmentov (A-C) z značilno amplitudno in predvsem v tretjem segmentu izrazito frekvenčno modulacijo. Trajanje celotnega napeva, ki ga škržadi ponavljajo večkrat zaporedoma brez prekinitve, je 38,2 +- 5,1 s. Modulacijo jakosti in zvočnega spektra spremljajo gibi zadka in v frekvenčno moduliranem delu tudi spremembe oblike zadka. Napevi osebkov z drugih lokacij (Kuala Lompat - Malaysia, Krui - Sumatra) se nekoliko razlikujejo od napevov iz Endau Rompina, vendar nedvomno kažejo isti osnovni vzorec, ki ga lahko pripisujemo isti vrstiTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaPrirodoslovni muzej Slovenije