PMID: 9163924May 1, 1997Paper

Sexual dimorphism and species differences in the neurophysiology and morphology of the acoustic communication system of two neotropical hylids

Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology
B E McClellandA S Rand

Abstract

We examined auditory tuning and the morphology of the anatomical structures underlying acoustic communication in female Hyla microcephala and H. ebraccata and compared our findings to data from a previous study (Wilczynski et al. 1993) in which we showed species differences in the traits that in males relate to differences in the species-typical calls. Female species differences in the best excitatory frequency (BEF) of the basilar papilla (BP) were similar to the differences seen in males, and females had a significantly lower BEF in H. ebraccata, but not H. microcephala. In both species, females had lower BP thresholds. Snout-vent length, head width, and tympanic membrane diameters were sexually dimorphic in both species and larger in females, whereas laryngeal components were sexually dimorphic and larger in males. Middle and inner ear volumes were not sexually dimorphic. Despite the significant species differences in laryngeal morphology seen in males, female larynges are not significantly different. Furthermore, the interaction of species and sex differences resulted in significantly different degrees of sex dimorphism in the species, particularly for the larynx, which is more sexually dimorphic in H. microcephala, and mea...Continue Reading

Citations

Jun 16, 2011·Nature Communications·Jun-Xian ShenShang-Chun Fan
Feb 11, 2014·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Wei-Rong LiuMao-Qiang Xue
Jul 19, 2005·Hormones and Behavior·Walter WilczynskiErin L O'Bryant
Jul 5, 2005·Hormones and Behavior·Frank L MooreDarcy B Kelley
May 15, 2015·Proceedings. Biological Sciences·Megan D Gall, Walter Wilczynski
Jan 12, 1999·General and Comparative Endocrinology·S K BoydG S Prins
Nov 1, 2018·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Ping YangGuangzhan Fang
Oct 11, 2017·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Lisa A Mangiamele, Matthew J Fuxjager
Jul 3, 2019·Current Zoology·Blinda E McClellandWalter Wilczynski
Jul 3, 2019·Current Zoology·Ryan C TaylorMichael J Ryan
Jan 8, 2021·The Journal of Experimental Biology·Kelly E SouthElizabeth C Leininger
Aug 24, 2021·The Journal of Experimental Biology·Kelly E SouthElizabeth C Leininger

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