Vocal traits of hybrid fur seals: intermediate to their parental species

Citation
B. Page et al., Vocal traits of hybrid fur seals: intermediate to their parental species, ANIM BEHAV, 61, 2001, pp. 959-967
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Animal Sciences","Neurosciences & Behavoir
Journal title
ANIMAL BEHAVIOUR
ISSN journal
0003-3472 → ACNP
Volume
61
Year of publication
2001
Part
5
Pages
959 - 967
Database
ISI
SICI code
0003-3472(200105)61:<959:VTOHFS>2.0.ZU;2-L
Abstract
Vocal communication is important for species recognition in colonial breedi ng species such as fur seals, especially where closely related species that can hybridize breed sympatrically. This is the first study to describe the calls of hybrid fur seals. We investigated whether these vocalizations are intermediate to those of their parental species (Antarctic, Arctocephalus gazella, subantarctic, A. tropicalis, and New Zealand, A. forsteri) and dis cuss the evolutionary implications of hybrids having intermediate vocal tra its. Hybrid males' bark calls were intermediate between two distinct groups formed by A. tropicalis and A. gazella/A. forsteri. Patterns of intermedia te call characteristics were also discernible for pup attraction calls (giv en by females) but not for full threat calls (given by males), nor female a ttraction calls (given by pups); however, for all call types hybrid calls w ere distinct from those of their parental species. The pattern of hybrid ca lls being intermediate is consistent with the expectation that call traits are genetically inherited. (C) 2001 The Association for the Study Animal Be haviour.