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Lisankis AP, Weigt AK, Barrett K, Youngclaus D, Bradenburger P, Bronson E. PREVALENCE OF OCULAR ABNORMALITIES AND NORMAL DIAGNOSTIC PARAMETERS IN TWO GROUPS OF PANAMANIAN GOLDEN FROGS ( ATELOPUS ZETEKI). J Zoo Wildl Med 2024; 55:322-329. [PMID: 38875189 DOI: 10.1638/2023-0072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2024] [Indexed: 06/16/2024] Open
Abstract
Panamanian golden frog (PGF) (Atelopus zeteki) is a critically endangered species. The Maryland Zoo in Baltimore houses two groups of PGF originating from distinct geographic locations as an assurance colony, with the goal of upholding genetics for future release of individuals back to their native environment. The purpose of this cross-sectional study was to characterize the prevalence of ocular abnormalities in these two zoo-housed populations of PGF as well as to establish normal parameters for selected diagnostic tests in these groups. Twenty-five females and 25 males were randomly selected from each group (100 PGF; 200 eyes in total) to undergo ocular examination using slit lamp biomicroscopy and direct ophthalmoscopy. Endodontic absorbent paper point test (EAPPT) and intraocular pressure (IOP) and Rose Bengal stain diagnostic tests were also performed. Reference ranges for tear production (EAPPT, 0.5-3 mm/min) and IOP (14-26 mmHg) were calculated in the nondiseased PGF eyes (n = 160 eyes). Rose Bengal stain uptake was negative on all eyes. In total, 40 eyes of 30 PGF were found to have some form of ocular abnormality (28% of PGF, 20% of eyes). The most frequently observed ocular abnormalities were cataract (9% of PGF, 6% of eyes) and keratitis (nonlipid keratopathy; 10% of PGF, 5.5% of eyes). There was no significant difference in overall ocular abnormality prevalence between the two groups studied (P = 0.37) or between the sexes (P = 0.76). The median age of an eye with cataract and keratitis (nonlipid keratopathy) was 10.35 and 7.7 yr, respectively. Ocular abnormalities are common in these two populations of PGF. Documentation of these ocular abnormalities and establishment of diagnostic reference ranges have not previously been published and may be important for maintaining the health of this endangered species.
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Affiliation(s)
| | - Anne K Weigt
- Dogs and Cats Emergency & Specialty, Bowie, MD 20715, USA
| | - Kevin Barrett
- The Maryland Zoo in Baltimore, Baltimore, MD 21217, USA
| | | | - Paul Bradenburger
- Smithsonian's National Zoo and Conservation Biology Institute, Washington, D.C. 20008, USA
| | - Ellen Bronson
- The Maryland Zoo in Baltimore, Baltimore, MD 21217, USA
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2
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Anderson NK, Preininger D, Fuxjager MJ. Comment on 'Parasite defensive limb movements enhance acoustic signal attraction in male little torrent frogs'. eLife 2023; 12:e89134. [PMID: 37812202 PMCID: PMC10561974 DOI: 10.7554/elife.89134] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/12/2023] [Indexed: 10/10/2023] Open
Abstract
Zhao et al. recently reported results which, they claim, suggest that sexual selection produces the multimodal displays seen in little torrent frogs (Amolops torrentis) by co-opting limb movements that originally evolved to support parasite defense (Zhao et al., 2022). Here, we explain why we believe this conclusion to be premature.
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Affiliation(s)
- Nigel K Anderson
- Department of Ecology, Evolution, and Organismal Biology, Brown UniversityProvidenceUnited States
| | - Doris Preininger
- Department of Evolutionary Biology, University of ViennaViennaAustria
- Vienna ZooViennaAustria
| | - Matthew J Fuxjager
- Department of Ecology, Evolution, and Organismal Biology, Brown UniversityProvidenceUnited States
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3
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Wan YC, Navarrete Méndez MJ, O'Connell LA, Uricchio LH, Roland AB, Maan ME, Ron SR, Betancourth-Cundar M, Pie MR, Howell KA, Richards-Zawacki CL, Cummings ME, Cannatella DC, Santos JC, Tarvin RD. Selection on Visual Opsin Genes in Diurnal Neotropical Frogs and Loss of the SWS2 Opsin in Poison Frogs. Mol Biol Evol 2023; 40:msad206. [PMID: 37791477 PMCID: PMC10548314 DOI: 10.1093/molbev/msad206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023] Open
Abstract
Amphibians are ideal for studying visual system evolution because their biphasic (aquatic and terrestrial) life history and ecological diversity expose them to a broad range of visual conditions. Here, we evaluate signatures of selection on visual opsin genes across Neotropical anurans and focus on three diurnal clades that are well-known for the concurrence of conspicuous colors and chemical defense (i.e., aposematism): poison frogs (Dendrobatidae), Harlequin toads (Bufonidae: Atelopus), and pumpkin toadlets (Brachycephalidae: Brachycephalus). We found evidence of positive selection on 44 amino acid sites in LWS, SWS1, SWS2, and RH1 opsin genes, of which one in LWS and two in RH1 have been previously identified as spectral tuning sites in other vertebrates. Given that anurans have mostly nocturnal habits, the patterns of selection revealed new sites that might be important in spectral tuning for frogs, potentially for adaptation to diurnal habits and for color-based intraspecific communication. Furthermore, we provide evidence that SWS2, normally expressed in rod cells in frogs and some salamanders, has likely been lost in the ancestor of Dendrobatidae, suggesting that under low-light levels, dendrobatids have inferior wavelength discrimination compared to other frogs. This loss might follow the origin of diurnal activity in dendrobatids and could have implications for their behavior. Our analyses show that assessments of opsin diversification in across taxa could expand our understanding of the role of sensory system evolution in ecological adaptation.
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Affiliation(s)
- Yin Chen Wan
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California Berkeley, Berkeley, CA, USA
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
- School of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin, Ireland
| | - María José Navarrete Méndez
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California Berkeley, Berkeley, CA, USA
- Museo de Zoología, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | | | - Lawrence H Uricchio
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California Berkeley, Berkeley, CA, USA
- Department of Biology, Tufts University, Medford, MA, USA
| | - Alexandre-Benoit Roland
- FAS Center for Systems Biology, Harvard University, Cambridge, MA, USA
- Research Centre on Animal Cognition (CRCA), Centre for Integrative Biology (CBI), UMR5169 CNRS, Toulouse University, Toulouse, France
| | - Martine E Maan
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Santiago R Ron
- Museo de Zoología, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | | | - Marcio R Pie
- Department of Zoology, Universidade Federal do Paraná, Curitiba, Brazil
- Biology Department, Edge Hill University, Ormskirk, United Kingdom
| | - Kimberly A Howell
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Molly E Cummings
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
| | - David C Cannatella
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
- Biodiversity Center, University of Texas at Austin, Austin, TX, USA
| | - Juan C Santos
- Department of Biological Sciences, St. John's University, New York City, NY, USA
| | - Rebecca D Tarvin
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California Berkeley, Berkeley, CA, USA
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4
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Zhao L, Wang J, Zhang H, Wang T, Yang Y, Tang Y, Halfwerk W, Cui J. Parasite defensive limb movements enhance acoustic signal attraction in male little torrent frogs. eLife 2022; 11:e76083. [PMID: 35522043 PMCID: PMC9122496 DOI: 10.7554/elife.76083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 05/03/2022] [Indexed: 11/13/2022] Open
Abstract
Many animals rely on complex signals that target multiple senses to attract mates and repel rivals. These multimodal displays can however also attract unintended receivers, which can be an important driver of signal complexity. Despite being taxonomically widespread, we often lack insight into how multimodal signals evolve from unimodal signals and in particular what roles unintended eavesdroppers play. Here, we assess whether the physical movements of parasite defense behavior increase the complexity and attractiveness of an acoustic sexual signal in the little torrent frog (Amolops torrentis). Calling males of this species often display limb movements in order to defend against blood-sucking parasites such as frog-biting midges that eavesdrop on their acoustic signal. Through mate choice tests we show that some of these midge-evoked movements influence female preference for acoustic signals. Our data suggest that midge-induced movements may be incorporated into a sexual display, targeting both hearing and vision in the intended receiver. Females may play an important role in incorporating these multiple components because they prefer signals which combine multiple modalities. Our results thus help to understand the relationship between natural and sexual selection pressure operating on signalers and how in turn this may influence multimodal signal evolution.
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Affiliation(s)
- Longhui Zhao
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of SciencesChengduChina
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal UniversityHaikouChina
| | - Jichao Wang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal UniversityHaikouChina
| | - Haodi Zhang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of SciencesChengduChina
| | - Tongliang Wang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal UniversityHaikouChina
| | - Yue Yang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of SciencesChengduChina
| | - Yezhong Tang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of SciencesChengduChina
| | - Wouter Halfwerk
- Department of Ecological Sciences, Vrije Universiteit Amsterdam, De BoelelaanAmsterdamNetherlands
| | - Jianguo Cui
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of SciencesChengduChina
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Stynoski JL, Womack MC, Trama FA, Coloma LA, Hoke KL. Whispers from vestigial nubbins: Arrested development provokes trait loss in toads. Evol Dev 2020; 23:5-18. [PMID: 33107688 DOI: 10.1111/ede.12356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 09/21/2020] [Accepted: 09/28/2020] [Indexed: 12/29/2022]
Abstract
Despite the use of acoustic communication, many species of toads (family Bufonidae) have lost parts of the tympanic middle ear, representing at least 12 independent evolutionary occurrences of trait loss. The comparative development of the tympanic middle ear in toads is poorly understood. Here, we compared middle ear development among two pairs of closely related toad species in the genera Atelopus and Rhinella that have (eared) or lack (earless) middle ear structures. We bred toads in Peru and Ecuador, preserved developmental series from tadpoles to juveniles, and examined ontogenetic timing and volume of the otic capsule, oval window, operculum, opercularis muscle, columella (stapes), and extracolumella in three-dimensional histological reconstructions. All species had similar ontogenesis of the otic capsule, oval window, operculum, and opercularis muscle. Moreover, cell clusters of primordial columella in the oval window appeared just before metamorphosis in both eared and earless lineages. However, in earless lineages, the cell clusters either remained as small nubbins or cell buds in the location of the columella footplate within the oval window or disappeared by juvenile and adult stages. Thus, columella growth began around metamorphosis in all species but was truncated and/or degenerated after metamorphosis in earless species, leaving earless adults with morphology typical of metamorphic anurans. Shifts in the timing or expression of biochemical pathways that regulate the extension or differentiation of the columella after metamorphosis may be the developmental mechanism underlying convergent trait loss among toad lineages.
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Affiliation(s)
- Jennifer L Stynoski
- Department of Biology, Colorado State University, Fort Collins, Colorado, USA.,Instituto Clodomiro Picado, Universidad de Costa Rica, Coronado, Costa Rica
| | - Molly C Womack
- Department of Biology, Colorado State University, Fort Collins, Colorado, USA.,Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Florencia A Trama
- Grupo de Investigación en Entomología y Medio Ambiente, Universidad San Ignacio de Loyola, Lima, Peru.,Centro de Capacitación en Conservación y Desarrollo Sostenible (CDS/CNEH-Perú), Oxapampa, Peru
| | - Luis A Coloma
- Centro Jambatu de Investigación y Conservación de Anfibios, Fundación Jambatu, Quito, Ecuador
| | - Kim L Hoke
- Department of Biology, Colorado State University, Fort Collins, Colorado, USA
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6
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Lötters S, Mebs D, Köhler G, Vargas J, La Marca E. The voice from the hereafter: vocalisations in three species of Atelopus from the Venezuelan Andes, likely to be extinct. HERPETOZOA 2019. [DOI: 10.3897/herpetozoa.32.e39192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Atelopus is a species-rich group of Neotropical bufonids. Present knowledge on bioacoustics in this genus is relatively poor, as vocalisations have been described in only about one fifth of the ca. 100 species known. All studied members of the genus produce vocalisations although, with a few exceptions, most species lack a middle ear. Nonetheless, hearing has been demonstrated even in earless Atelopus making bioacoustics in these toads an inspiring research field. So far, three structural call types have been identified in the genus. As sympatry is uncommon in Atelopus, calls of the same type often vary little between species. Based on recordings from the 1980s, we describe vocalisations of three Venezuelan species (A. carbonerensis, A. mucubajiensis, A. tamaense) from the Cordillera de Mérida, commonly known as the Andes of Venezuela and the Tamá Massif, a Venezuelan spur of the Colombian Cordillera Oriental. Vocalisations correspond, in part, to the previously identified call types in Atelopus. Evaluation of the vocalisations of the three species presented in this study leads us to recognise a fourth structural call type for the genus. With this new addition, the Atelopus acoustic repertoire now includes (1) pulsed calls, (2) pure tone calls, (3) pulsed short calls and (4) pure tone short calls. The call descriptions provided here are valuable contributions to the bioacoustics of these Venezuelan Atelopus species, since all of them have experienced dramatic population declines that limit possibilities of further studies.
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7
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Furtado R, Lermen LN, Márquez R, Hartz SM. Neotropical dancing frog: the rich repertoire of visual displays in a hylodine species. J ETHOL 2019. [DOI: 10.1007/s10164-019-00600-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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8
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Ceríaco LMP, Marques MP, Bandeira S, Agarwal I, Stanley EL, Bauer AM, Heinicke MP, Blackburn DC. A new earless species of Poyntonophrynus (Anura, Bufonidae) from the Serra da Neve Inselberg, Namibe Province, Angola. Zookeys 2018:109-136. [PMID: 30127660 PMCID: PMC6093966 DOI: 10.3897/zookeys.780.25859] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 07/05/2018] [Indexed: 11/16/2022] Open
Abstract
African pygmy toads of the genus Poyntonophrynus are some of the least known species of African toads. The genus comprises ten recognized species endemic to sub-Saharan Africa, five of which are restricted to southwestern Africa. Recent field research in Angola provided new material for three species of Poyntonophrynus, including a morphologically distinctive population from the Serra da Neve Inselberg. Based on a combination of external morphology, high-resolution computed tomography scanning, and molecular phylogenetic analysis, the Serra da Neve population is described as new species that is nested within the genus. The most striking character that differentiates the newly described species from its congeners is the lack of a tympanic middle ear, a condition common in the family Bufonidae, but so far not known for Poyntonophrynus. The description of this new species from southwestern Angola reinforces the biogeographic importance of the region and further suggests that southwestern Africa is the cradle of diversity for this genus.
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Affiliation(s)
- Luis M P Ceríaco
- Department of Natural Sciences, University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, Michigan 48128, USA University of Michigan-Dearborn Dearborn United States of America.,Department of Biology, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085-1699, USA Universidade de Lisboa Lisbon Portugal.,Museu Nacional de História Natural e da Ciência, Universidade de Lisboa, Rua da Escola Politécnica, 58, 1269-102 Lisboa, Portugal Villanova University Villanova United States of America
| | - Mariana P Marques
- Museu Nacional de História Natural e da Ciência, Universidade de Lisboa, Rua da Escola Politécnica, 58, 1269-102 Lisboa, Portugal Villanova University Villanova United States of America.,Research Center in Biodiversity and Genetic Resources (CIBIO), InBIO, University of Porto, Rua Padre Armando Quintas 7, Vairão, 4485-661 Porto, Portugal University of Porto Porto Portugal
| | - Suzana Bandeira
- Department of Biology, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085-1699, USA Universidade de Lisboa Lisbon Portugal.,Instituto Nacional da Biodiversidade e Áreas de Conservação (INBAC), Ministério do Ambiente de Angola, Centralidade do Kilamba, Rua 26 de Fevereiro, Quarteirão Nimi Ya Lukemi, edifício Q11, 3° andar, Angola Ministério do Ambiente de Angola Luanda Angola
| | - Ishan Agarwal
- Department of Biology, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085-1699, USA Universidade de Lisboa Lisbon Portugal
| | - Edward L Stanley
- Department of Natural History, Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611, USA University of Florida Gainsville United States of America
| | - Aaron M Bauer
- Department of Biology, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085-1699, USA Universidade de Lisboa Lisbon Portugal
| | - Matthew P Heinicke
- Department of Natural Sciences, University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, Michigan 48128, USA University of Michigan-Dearborn Dearborn United States of America
| | - David C Blackburn
- Department of Natural History, Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611, USA University of Florida Gainsville United States of America
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Mowles SL, Jennions M, Backwell PRY. Multimodal communication in courting fiddler crabs reveals male performance capacities. ROYAL SOCIETY OPEN SCIENCE 2017; 4:161093. [PMID: 28405396 PMCID: PMC5383853 DOI: 10.1098/rsos.161093] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 02/14/2017] [Indexed: 06/07/2023]
Abstract
Courting males often perform different behavioural displays that demonstrate aspects of their quality. Male fiddler crabs, Uca sp., are well known for their repetitive claw-waving display during courtship. However, in some species, males produce an additional signal by rapidly stridulating their claw, creating a 'drumming' vibrational signal through the substrate as a female approaches, and even continue to drum once inside their burrow. Here, we show that the switch from waving to drumming might provide additional information to the female about the quality of a male, and the properties of his burrow (multiple message hypothesis). Across males there was, however, a strong positive relationship between aspects of their waving and drumming displays, suggesting that drumming adheres to some predictions of the redundant signal hypothesis for multimodal signalling. In field experiments, we show that recent courtship is associated with a significant reduction in male sprint speed, which is commensurate with an oxygen debt. Even so, males that wave and drum more vigorously than their counterparts have a higher sprint speed. Drumming appears to be an energetically costly multimodal display of quality that females should attend to when making their mate choice decisions.
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Affiliation(s)
- Sophie L. Mowles
- Animal and Environment Research Group, Faculty of Science and Technology, Anglia Ruskin University, East Road, Cambridge CB1 1PT, UK
- Evolution, Ecology and Genetics, Research School of Biology, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Michael Jennions
- Evolution, Ecology and Genetics, Research School of Biology, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Patricia R. Y. Backwell
- Evolution, Ecology and Genetics, Research School of Biology, The Australian National University, Canberra, Australian Capital Territory, Australia
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10
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Furtado R, Márquez R, Hartz SM. In front of a mirror: visual displays may not be aggressive signals in nocturnal tree frogs. J NAT HIST 2016. [DOI: 10.1080/00222933.2016.1262078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Raíssa Furtado
- Programa de Pós-Graduação em Ecologia, Departamento de Ecologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Rafael Márquez
- Fonoteca Zoológica, Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, Madrid, Spain
| | - Sandra Maria Hartz
- Departamento de Ecologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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11
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de Sá FP, Zina J, Haddad CFB. Sophisticated Communication in the Brazilian Torrent Frog Hylodes japi. PLoS One 2016; 11:e0145444. [PMID: 26760304 PMCID: PMC4719245 DOI: 10.1371/journal.pone.0145444] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 12/03/2015] [Indexed: 11/18/2022] Open
Abstract
Intraspecific communication in frogs plays an important role in the recognition of conspecifics in general and of potential rivals or mates in particular and therefore with relevant consequences for pre-zygotic reproductive isolation. We investigate intraspecific communication in Hylodes japi, an endemic Brazilian torrent frog with territorial males and an elaborate courtship behavior. We describe its repertoire of acoustic signals as well as one of the most complex repertoires of visual displays known in anurans, including five new visual displays. Previously unknown in frogs, we also describe a bimodal inter-sexual communication system where the female stimulates the male to emit a courtship call. As another novelty for frogs, we show that in addition to choosing which limb to signal with, males choose which of their two vocal sacs will be used for visual signaling. We explain how and why this is accomplished. Control of inflation also provides additional evidence that vocal sac movement and color must be important for visual communication, even while producing sound. Through the current knowledge on visual signaling in Neotropical torrent frogs (i.e. hylodids), we discuss and highlight the behavioral diversity in the family Hylodidae. Our findings indicate that communication in species of Hylodes is undoubtedly more sophisticated than we expected and that visual communication in anurans is more widespread than previously thought. This is especially true in tropical regions, most likely due to the higher number of species and phylogenetic groups and/or to ecological factors, such as higher microhabitat diversity.
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Affiliation(s)
- Fábio P. de Sá
- Laboratório de Herpetologia, Departamento de Zoologia, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
- * E-mail:
| | - Juliana Zina
- Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Jequié, Bahia, Brazil
| | - Célio F. B. Haddad
- Laboratório de Herpetologia, Departamento de Zoologia, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
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12
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Mate Searching Animals as Model Systems for Understanding Perceptual Grouping. PSYCHOLOGICAL MECHANISMS IN ANIMAL COMMUNICATION 2016. [DOI: 10.1007/978-3-319-48690-1_4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Furtado R, Nomura F. Visual signals or displacement activities? The function of visual displays in agonistic interactions in nocturnal tree frogs. Acta Ethol 2013. [DOI: 10.1007/s10211-013-0160-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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15
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Zeyl JN, Laberge F. Multisensory signals trigger approach behaviour in the fire-bellied toad Bombina orientalis: sex differences and call specificity. ZOOLOGY 2011; 114:369-77. [DOI: 10.1016/j.zool.2011.08.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/08/2011] [Accepted: 08/11/2011] [Indexed: 10/16/2022]
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16
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Hirschmann W, Hödl W. VISUAL SIGNALING IN PHRYNOBATRACHUS KREFFTII BOULENGER, 1909 (ANURA: RANIDAE). HERPETOLOGICA 2006. [DOI: 10.1655/04-06.1] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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