BIOACOUSTICS OF SOUTHERN ELEPHANT SEALS. I. ACOUSTIC STRUCTURE OF MALE AGGRESSIVE VOCALISATIONS

摘要: ABSTRACT Southern elephant seal Mirounga leonina males have a complex and stereotyped system of access to breeding females. The single most important component male behaviour is vocal signalling, which used settle agonistic encounters in cases. Most aspects the biology species been studied depth, but detailed information about structure vocalisations not readily available. Here, we present data acoustic aggressive collected Falkland Islands compare these published on northern seals. Our main goal describe sounds as preliminary indispensable step towards analysis their functional significance. Male are low-pitched sounds, made up pulse trains, with little frequency modulation. Low high sound pressure level typical Pinnipedia, they were particularly evident southern seal...