@article {58466,
	title = {In-air acoustic repertoire and associated behaviour of wild juvenile crabeater seals during rehabilitation},
	journal = {Bioacoustics},
	year = {2022},
	month = {Aug-18-2022},
	pages = {1-23},
	abstract = {<p>In-air sounds of pinnipeds are important for interactions with conspecifics and threat displays. However, little is known about the in-air acoustic repertoire and associated behaviour of crabeater seals Lobodon carcinophaga. We investigated the in-air acoustic repertoire and associated behaviour of two male and one female wild juvenile crabeater seals that beached separately, and were rehabilitated in Durban and Gqeberha, South Africa. In-air sounds were visually identified and categorised into five classes validated via random forest model classification: brief, intermediate, and long moan calls, croaks, and hisses. Hisses were common (n\&thinsp;=\&thinsp;25,105 sounds from 136 hrs of acoustic recordings) and detected during heightened arousal states and interactions with animal care staff and a conspecific. Furthermore, hisses were also recorded in low arousal states during exhalation. Moan calls (n\&thinsp;=\&thinsp;241) were only detected from two of the three seals. During rehabilitation, the female seal ceased producing moan calls and later produced a series of croaks (n\&thinsp;=\&thinsp;204). Acoustic characteristics of in-air moan calls differed from published underwater moan calls according to duration, minimum, and maximum frequencies, and pulse repetition rate. Our study shows that the in-air acoustic repertoire and associated behaviour of these Antarctic seals are dynamic, vary inter-individually and are context dependent.</p>
},
	issn = {0952-4622, 2165-0586},
	doi = {10.1080/09524622.2022.2108145},
	url = {http://dx.doi.org/10.1080/09524622.2022.2108145},
	author = {Shabangu, Fannie W. and Hofmeyr, G. J. Greg and Probert, Rachel and Connan, Ma{\"e}lle and Buhrmann, Corrine A. and Gridley, Tess}
}
