期刊
ETHOLOGY ECOLOGY & EVOLUTION
卷 26, 期 4, 页码 392-404出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/03949370.2013.851122
关键词
short-beaked common dolphin; intra-specific differences; geographic variation; Mediterranean; Atlantic; whistles
资金
- FCT (Fundacao para a Ciencia e a Tecnologia)
- DRCTC/SRCTE (Secretaria Regional de Ciencia, Tecnologia e Equipamentos)
- FEDER funds
- Competitiveness Factors Operational (COMPETE)
- QREN European Social Fund
- Proconvergencia Acores Program
- FCT
- DRCTC - Government of the Azores
- FCT [SFRH/BPD/29841/2006, SFRH/BD/41192/2007, SFRH/BD/32520/2006]
- Azores Regional Fund for Science and Technology [M3.1.5/F/115/2012]
- U.E. LIFE programme - project LIFE INDEMARES [LIFE 07/NAT/E/000732]
- Fundacion Biodiversidad, under the Spanish Ministry of Environment, Rural and Marine Affairs (project ZEC-TURSIOPS)
- [POCTI/BSE/38991/01]
- [PTDC/MAR/74071/2006]
- [M2.1.2/F/012/2011]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/41192/2007, SFRH/BD/32520/2006] Funding Source: FCT
Genetic studies have shown that there are small but significant differences between the short-beaked common dolphin populations in the Atlantic Ocean and those in the Mediterranean Sea. The short-beaked common dolphin is a highly vocal species with a wide sound production repertoire including whistles. Whistles are continuous, narrowband, frequency-modulated signals that can show geographic variation in dolphin species. This study tests whether the differences, highlighted by genetic studies, are recognisable in the acoustic features of short-beaked common dolphin's whistles in the two adjacent areas of the Atlantic Ocean and the Mediterranean Sea. From a selected sample of good quality whistles (514 recorded in the Atlantic and 193 in the Mediterranean) 10 parameters of duration, frequency and frequency modulation were measured. Comparing data among basins, differences were found for duration and all frequency parameters except for minimum frequency. Modulation parameters showed the highest coefficient of variation. Through discriminant analysis we correctly assigned 75.7% of sounds to their basins. Furthermore, micro-geographic analysis revealed similarity between the sounds recorded around the Azores and the Canary archipelagos and between the Bay of Biscay and the Mediterranean Sea. Results are in agreement with the hypothesis proposed by previous genetic studies that two distinct populations are present, still supposing a gene flow between the basins. This study is the first to compare short-beaked common dolphin's whistles of the Atlantic Ocean and the Mediterranean areas.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据