Geographic variation in the laryngeal morphology of a widely distributed South-American anuran: behavioural and evolutionary implications

Author:

López Carlos1,Quispe Maricel2,Villalón Aldo3,Concha Miguel L456,Penna Mario2,Velásquez Nelson A1ORCID

Affiliation:

1. Laboratorio de Comunicación Animal, Facultad de Ciencias Básicas, Universidad Católica del Maule, Talca, Chile

2. Laboratorio de Neuroetología, ICBM, Universidad de Chile, Santiago, Chile

3. Health Sciences Department, Universidad de Aysén. Coyhaique, Chile

4. Laboratory of Experimental Ontogeny, Institute of Biomedical Sciences, Facultad de Medicina, Universidad de Chile, Santiago, Chile

5. Biomedical Neuroscience Institute, Santiago, Chile

6. Center for Geroscience, Brain Health and Metabolism, Santiago, Chile

Abstract

AbstractSound-producing organs generate acoustic signals that have a fundamental role in communication systems. In species exhibiting different biogeographic patterns, variations of these structures can explain a large part of interpopulation differences of their signals. Pleurodema thaul is an anuran with an extensive geographic distribution in Chile and presents an evident divergence in its acoustic signals among three genetic/bioacoustic groups (i.e. northern, central and southern). By means of classic histology and 3D-reconstructions, we study the geographic variation in the larynx of P. thaul males from these three groups. In addition, volumes of six laryngeal structures are used as predictors of acoustic characteristics of advertisement calls recorded in previous studies for the same subjects used in the current study. After removing the effect of body size, the arytenoid cartilage, dilator muscle and vocal cords show significant differences between the three bioacoustic groups. Furthermore, arytenoid cartilage and dilator muscle volumes predict some temporal parameters and also the dominant frequency of advertisement calls. Our results show important geographic variation in laryngeal morphology, which is in correspondence with acoustic, behavioural and genetic variation in this species.

Funder

FONDECYT

Chilean Millennium Science Initiative

Chilean National Commission for Scientific and Technological Research

Publisher

Oxford University Press (OUP)

Subject

Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics

Reference73 articles.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3