8 research outputs found
Common Raven (Corvus corax)
No full textRecordings were made by Dr. Andrius Pašukonis with the support of Prof. Dr. Thomas Brugnyar and the staff of the Haidlhof Research Station (University of Vienna and University of Veterinary Medicine, Vienna, Austria).
Arousal was assessed based on the type of physical confrontation with a dominant individual.
Cf: Szipl, G., Ringler, E., Spreafico, M., & Bugnyar, T. (2017). Calls during agonistic interactions vary with arousal and raise audience attention in ravens. Frontiers in zoology, 14(1), 57
Relying on known or exploring for new? Movement patterns and reproductive resource use in a tadpole-transporting frog
No full textAnimals relying on uncertain, ephemeral and patchy resources have to regularly update their information about profitable sites. For many tropical amphibians, widespread, scattered breeding pools constitute such fluctuating resources. Among tropical amphibians, poison frogs (Dendrobatidae) exhibit some of the most complex spatial and parental behaviors—including territoriality and tadpole transport from terrestrial clutches to ephemeral aquatic deposition sites. Recent studies have revealed that poison frogs rely on spatial memory to successfully navigate through their environment. This raises the question of when and how these frogs gain information about the area and suitable reproductive resources. To investigate the spatial patterns of pool use and to reveal potential explorative behavior, we used telemetry to follow males of the territorial dendrobatid frog Allobates femoralis during tadpole transport and subsequent homing. To elicit exploration, we reduced resource availability experimentally by simulating desiccated deposition sites. We found that tadpole transport is strongly directed towards known deposition sites and that frogs take similar direct paths when returning to their home territory. Frogs move faster during tadpole transport than when homing after the deposition, which probably reflects different risks and costs during these two movement phases. We found no evidence for exploration, neither during transport nor homing, and independent of the availability of deposition sites. We suggest that prospecting during tadpole transport is too risky for the transported offspring as well as for the transporting male. Relying on spatial memory of multiple previously discovered pools appears to be the predominant and successful strategy for the exploitation of reproductive resources in A. femoralis. Our study provides for the first time a detailed description of poison frog movement patterns during tadpole transport and corroborates recent findings on the significance of spatial memory in poison frogs. When these frogs explore and discover new reproductive resources remains unknown
(Dendrobatidae)
No full textDendrobatidae (dart-poison frogs) exhibit some of the most complex spatial behaviors among amphibians, such as territoriality and tadpole transport from terrestrial clutches to widely distributed deposition sites. In species that exhibit long-term territoriality, high homing performance after tadpole transport can be assumed, but experimental evidence is lacking, and the underlying orientation mechanisms are unknown. We conducted a field translocation experiment to test whether male Allobates femoralis, a dendrobatid frog with paternal extra-territorial tadpole transport, are capable of homing after experimental removal, as well as to quantify homing success and speed. Translocated individuals showed a very high homing success for distances up to 200m and successfully returned from up to 400m. We discuss the potential orientation mechanisms involved and selective forces that could have shaped this strong homing ability
Data from: Humans recognize emotional arousal in vocalizations across all classes of terrestrial vertebrates: evidence for acoustic universals
No full textWriting over a century ago, Darwin hypothesized that vocal expression of emotion dates back to our earliest terrestrial ancestors. If this hypothesis is true, we should expect to find cross-species acoustic universals in emotional vocalizations. Studies suggest that acoustic attributes of aroused vocalizations are shared across many mammalian species, and that humans can use these attributes to infer emotional content. But do these acoustic attributes extend to non-mammalian vertebrates? In this study, we asked human participants to judge the emotional content of vocalizations of nine vertebrate species representing three different biological classes—Amphibia, Reptilia (non-aves and aves) and Mammalia. We found that humans are able to identify higher levels of arousal in vocalizations across all species. This result was consistent across different language groups (English, German and Mandarin native speakers), suggesting that this ability is biologically rooted in humans. Our findings indicate that humans use multiple acoustic parameters to infer relative arousal in vocalizations for each species, but mainly rely on fundamental frequency and spectral centre of gravity to identify higher arousal vocalizations across species. These results suggest that fundamental mechanisms of vocal emotional expression are shared among vertebrates and could represent a homologous signalling system
Multimodal Aposematic Signals and Their Emerging Role in Mate Attraction
No full textChemically defended animals often display conspicuous color patterns that predators
learn to associate with their unprofitability and subsequently avoid. Such animals (i.e.,
aposematic), deter predators by stimulating their visual and chemical sensory channels.
Hence, aposematism is considered to be “multimodal.” The evolution of warning signals
(and to a lesser degree their accompanying chemical defenses) is fundamentally linked
to natural selection by predators. Lately, however, increasing evidence also points to a
role of sexual selection shaping warning signal evolution. One of the species in which this
has been shown is the wood tiger moth, Arctia plantaginis, which we here put forward
as a promising model to investigate multimodality in aposematic and sexual signaling.
A. plantaginis is an aposematic diurnal moth which exhibits sexually dimorphic coloration
as well as sex-limited polymorphism in part of its range. The anti-predator function
of its coloration and, more recently, its chemical defenses (even when experimentally
decoupled from the visual signals), has been well-demonstrated. Interestingly, recent
studies have revealed differences between the two male morphs in mating success,
suggesting a role of coloration in mate choice or attraction, and providing a possible
explanation for its sexual dimorphism in coloration. Here, we: (1) review the lines of
evidence showing the role of predation pressure and sexual selection in the evolution
of multimodal aposematic signals in general, and in the wood tiger moth in particular;
(2) establish gaps in current research linking sexual selection and predation as selective
pressures on aposematic signals by reviewing a sample of the literature published in
the last 30 years; (3) highlight the need of identifying suitable systems to address
simultaneously the effect of natural and sexual selection on multimodal aposematic
signals; and (4) propose directions for future research to test how aposematic signals
can evolve under natural and sexual selection.peerReviewe
Empowering Latina scientists
No full textPurdue Univ, Dept Life Sci, W Lafayette, IN 47906 USASmithsonian Trop Res Inst, Apartado 0843-03092, Balboa, Ancon, PanamaUniv Jyvaskyla, Ctr Excellence Biol Interact, Dept Biol & Environm Sci, Jyvaskyla, FinlandUniv Nacl Colombia, Inst Ciencias Nat, Bogota, ColombiaUniv Nacl Autonoma Mexico, Dept Ciencias Biol, Mexico City, DF, MexicoUniv Puerto Rico, San Juan, PR USACorp Gest Ambiental Biodiversa, Santiago De Cali, ColombiaPurdue Univ, Dept Biol Sci, W Lafayette, IN 47907 USASmithsonian Trop Res Inst, Balboa, Ancon, PanamaUniv Jyvaskyla, Jyvaskyla, FinlandUniv Puerto Rico, X Vittatus Project, San Juan, PR 00936 USAUniv Puerto Rico, San Juan, PR 00936 USACorp Gest Ambiental Biodiversa, Bogota, ColombiaCorp Colombiana Invest Agropecua Agrosavia, Bogota, ColombiaCUNY, Biol Program, New York, NY 10021 USAUniv Colorado, Boulder, CO 80309 USAUniv Rosario, Fac Ciencias Nat & Matemat, Programa Biol, Cra 24 63C-69, Bogota 111221, ColombiaUniv La Laguna, Grp Invest Etol & Ecol Comportamiento, Tenerife, SpainUCL, Phys, London WC1E 6BT, EnglandPontificia Univ Javeriana, Fac Rural & Environm Studies, Dept Ecol & Terr, Bogota, ColombiaUSFQ, Colegio Ciencias Biol & Ambientales, Inst Biosfera, Lab Biol Evolut, Quito, EcuadorCornell Univ, Dept Neurobiol & Behav, Ithaca, NY 14853 USAUniv Sao Paulo, Inst Biociencias, Dept Fisiol, Lab Comportamiento & Fisiol Evolut, Sao Paulo, BrazilUniv Udine, Dept Agr Food Environm & Animal Sci, Udine, ItalyVirginia Polytech Univ, Dept Biol Sci, Blacksburg, VA 24061 USAOregon State Univ, Dept Fisheries & Wildlife, Corvallis, OR 97331 USAUniv Los Andes, Dept Biol Sci, Bogota, ColombiaUniv Calif Berkeley, Miller Inst Basic Res Sci, Berkeley, CA USAUniv Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USAUniv New South Wales, Sch BEES, PANGEA Res Ctr, Sydney, NSW 2052, AustraliaPontificia Univ Catolica Ecuador, Escuela Biol, Museo Zool, Quito, EcuadorUniv Calif Davis, Davis, CA 95616 USAUniv Tecnol Indoamer, Ctr Invest Biodiversidad & Cambio Climat, BioCamp, Quito, EcuadorUniv Hong Kong, Sch Biol Sci, Pok Fu Lam Rd, Hong Kong, Peoples R ChinaPontificia Univ Javeriana, Dept Biol, Bogota, ColombiaUniv Connecticut, Dept Ecol & Evolutionary Biol, Storrs, CT USAUniv Illinois, Dept Biol Sci, Chicago, IL 60680 USAUniv Massachusetts, Mol & Cellular Biol Program, Amherst, MA 01003 USAGettysburg Coll, Dept Biol, Gettysburg, PA 17325 USAUniv Barcelona, Barcelona, SpainLeibniz Inst Evolut & Biodiversitaetsforsch, Museum Nat Kunde, Berlin, GermanyConsejo Nacl Invest Cient & Tecn, San Miguel De Tucuman, ArgentinaCUNY, Dept Biol, New York, NY 10021 USAUniv Michigan, Dept Ecol & Evolut Biol, Ann Arbor, MI 48109 USAInst Alexander Humboldt, Bogota, ColombiaUniv Los Andes, Bogota, ColombiaUniv Autonoma Chihuahua, Acad Catedras Conacyt, Chihuahua, MexicoUniv Maryland, Dept Biol, College Pk, MD 20742 USAUniv Estado Rio de Janeiro, UFRJ, Rio De Janeiro, BrazilChalmers Univ Technol, Depat Phys, Gothenburg, SwedenUniv Los Andes, Lab Neurociencia & Comportamiento, Bogota, ColombiaSmithsonian Inst, Nat Museum Nat Hist, Washington, DC 20560 USAInst Invest Recursos Biol Alexander von Humboldt, Bogota, ColombiaMuseo Nacl Hist Nat, Montevideo, UruguayUniv Fed Alagoas, Maceio, BrazilGettysburg Coll, Dept Biol, Gothenburg, SwedenIVIC, Caracas, VenezuelaUniv Distrital Francisco Jose de Caldas, Bogota, ColombiaUniv Costa Rica, Golfito, Costa RicaUniv Diego Portales, Psychol, Santiago, ChileSwansea Univ, Biosci Dept, Marie Curie COFUND, Swansea, W Glam, WalesIndiana Univ, Dept Comp Sci, Bloomington, IN 47405 USAIndiana Univ, Dept Biol, Bloomington, IN USABoston Univ, Biol, Boston, MA 02215 USAEMCALI EICE ESP, Dept Prod Agua Potable, Cali, ColombiaWildlife Conservat Soci, Cali, ColombiaUniv Sao Paulo, Inst Biociencias, Dept Zool, Sao Paulo, BrazilUniv Norte, Dept Quim & Biol, Barranquilla, ColombiaSan Diego State Univ, Dept Quim & Biol, Riverside, CA USAUniv Calif Riverside, Riverside, CA 92521 USAUniv Puerto Rico, Biol, Rio Piedras, PR USAFlorida Int Univ, Dept Biol Sci, Miami, FL 33199 USAUniv Fed Rio De Janeiro, Museu Nacl, Dept Vertebrados, Rio De Janeiro, BrazilSan Francisco State Univ, Dept Biol, San Francisco, CA 94132 USAUniv Calif Santa Cruz, Dept Ecol & Evolut, Santa Cruz, CA USAUniv Calif Los Angeles, Dept Ecol & Evolut Biol, Los Angeles, CA USAUniv Reg Blumenau, Dept Anim Biol, Blumenau, Santa Catarina, BrazilUniv Fed Mato Grosso do Sul, Dept Zool, Campo Grande, BrazilUniv Fuerzas Armadas ESPE, Dept Life Sci & Agr, Sangolqui, EcuadorCorp Biodiversa, Cali, ColombiaUSFQ, Inst Biosfera, Colegio Ciencias & Ingn, Quito, EcuadorUniv Melbourne, Sch BioSci, Melbourne, Vic, AustraliaUniv Calif Los Angeles, Dept Integrat Biol & Physiol, Los Angeles, CA USAUniv Fed Santa Maria, Dept Ecol & Evolucao, Santa Maria, RS, BrazilUniv Fed ABC, Ctr Ciencias Nat & Humanas, Sao Bernardo Do Campo, BrazilUniv Nacl Autonoma Mexico, Ctr Ciencias Atmosfera, Mexico City, DF, MexicoColorado State Univ, Dept Biol, Ft Collins, CO 80523 USAUniv Estado Rio De Janeiro, Dept Ecol, Rio De Janeiro, BrazilConsejo Nacl Invest Cient & Tecn, Buenos Aires, DF, ArgentinaConsejo Nacl Invest Cient & Tecn, Museo Argentino Ciencias Nat Bernardino Rivadavia, Buenos Aires, DF, ArgentinaUniv Fed Mato Grosso do Sul, Dept Ecol & Conservacao, Campo Grande, BrazilUniv Gothenburg, Gothenburg, SwedenGothenburg Global Biodivers Ctr, Gothenburg, SwedenUniv Los Andes, Dept Ciencias Biol, Bogota, ColombiaUniv Fed Goias, Inst Ciencias Biol, Goiania, Go, BrazilCUNY, New York, NY 10021 USAUniv Calif Irvine, Dept Ecol & Evolut Biol, Irvine, CA 92717 USAUniv Puerto Rico Rio Piedras, Dept Biol, San Juan, PR 00931 USAUniv Sao Paulo, Dept Zool, Sao Paulo, SP, BrazilUniv Estadual Minas Gerais, Passos, BrazilUniv Estadual Paulista, UNESP, Sao Jose Do Rio Preto, SP, BrazilMuseu Paraense Emilio Goeldi, Belem, Para, BrazilUniv Estad Rio De Janeiro, Rio De Janeiro, BrazilOrg Trop Studies, Montes De Oca, Costa RicaUniv Guayaquil, Escuela Biol, Guayaquil, EcuadorUniv Estadual Sudoeste Bahia, Jequie, BrazilUniv Fed Rio Grande do Sul, Porto Alegre, RS, BrazilMax Planck Inst Ornithol, Constance, GermanyInvest Conservac Neotropi, Bogota, ColombiaAustralian Natl Univ, Div Ecol & Evolut, Canberra, ACT, AustraliaUniv Sao Paulo, Sao Paulo, BrazilUniv Estadual Paulista Julio Mesquita, Araraquara, BrazilUniv Kansas, Biodivers Inst, Lawrence, KS 66045 USAUniv Estado Mato Grosso, Caceres, BrazilUniv Chicago, Dept Ecol & Evolut, 940 E 57Th St, Chicago, IL 60637 USAUniv Estadual Paulista, Lab Ecol & Evolucao, Sao Paulo, SP, BrazilUniv Estadual Paulista, Sao Paulo, BrazilUniv Brasilia, Brasilia, DF, BrazilUniv Estadual Campinas, Sao Paulo, BrazilAsociac Calidris, Cali, ColombiaInst Invest Recursos Biol Alexander von Humboldt, Villa De Leyva, ColombiaCORPAVET, Bogota, ColombiaUniv Nacl Jujuy, Fac Ciencias Agr, Ctr Estudios Terr Ambientales & Sociales, San Salvador De Jujuy, ArgentinaMacquarie Univ, Dept Biol Sci, Sydney, AustraliaUniv Los Andes, Dept Ciencias Biol, Biol, Bogota, ColombiaUniv Nacl Colombia, Dept Biol, Bogota, ColombiaUniv Nacl Colombia, Dept Matemat, Bogota, ColombiaPontificia Univ Catolica Minas Gerais, Dept Ciencias Biol & Saude, Belo Horizonte, MG, BrazilUniv Antioquia, Fac Ciencias Exactas & Nat, Inst Biol, Medellin, ColombiaZRC SAZU, Biol Inst Jovan Hadiz, Ljubljana, SloveniaUniv Fed Rio Grande do Sul, Programa Pos Grad Biol Anim, Porto Alegre, RS, BrazilUniv Nacl Cordoba, CONICET, Buenos Aires, DF, ArgentinaCornell Lab of Ornithol, Ithaca, NY USAInvest Conservac Neotrop, Bogota, ColombiaUniv Nacl Costa Rica, Escuela Ciencias Biol, Heredia, Costa RicaUniv Los Andes, Dept Ingn Biomed, Bogota, ColombiaUniv Costa Rica, Inst Clodomiro Picado, San Jose, Costa RicaUniv Costa Rica, Escuela Biol, San Jose, Costa RicaNIH, Bldg 10, Bethesda, MD 20892 USAUniv Nacl Colombia, Lab Ecol Paisaje & Modelacion Ecosistemas, ECOLMOD, Bogota, ColombiaUniv Nacl Colombia, Bogota, ColombiaSalisbury Univ, Salisbury, MD USAUniv Calif Irvine, Irvine, CA USAUniv Queensland, Sch Biol Sci, St Lucia, Qld, AustraliaStanford Univ, Stanford, CA 94305 USAUniv Buenos Aires, Buenos Aires, DF, ArgentinaVet Univ Hannover, Hannover, GermanyUniv La Plata, La Plata, Buenos Aires, ArgentinaUniv Nacl Cordoba, Misiones, ArgentinaConsejo Nacl Invest Cient & Tecn, Misiones, ArgentinaSouthern Illinois Univ, Carbondale, IL 62901 USAUniv Las Amer, Quito, EcuadorUniv Arizona, Tucson, AZ USAUniv Vienna, Vienna, AustriaJames Cook Univ, Cairns, AustraliaGoethe Univ Frankfurt, Frankfurt, GermanyConsejo Nacl Invest Cient & Tecn, UNJu, Inst Ecorreg Andinas, San Salvador De Jujuy, ArgentinaUniv Lincoln, Sch Life Sci, Lincoln LN6 7TS, EnglandWCS Chile, Santiago, ChileUniv Lincoln, Lincoln, EnglandSUNY Buffalo, Biol Sci, Buffalo, NY USAUniv Sao Paulo, LEFE, Sao Paulo, BrazilUniv Amsterdam, Inst Biodivers & Ecosyst Dynam, Amsterdam, NetherlandsUniv Vet Med Vienna, Vienna, AustriaUniv Puerto Rico, Dept Environm Sci, Rio Piedras, PR USAWashington Univ, Dept Biol, Campus Box 1137, St Louis, MO 63130 USAMarquette Univ, Milwaukee, WI 53233 USASmithsonian Trop Rese Inst, Panama City, PanamaUniv Oviedo, Zool Unit, Oviedo, SpainUniv Oviedo, Res Unit, UMIB, Oviedo, SpainUniv Minnesota, Dept Ecol Evolut & Behav, Minneapolis, MN 55455 USASalisbury Univ, Dept Biol Sci, Salisbury, MD USAUniv Magdalena, Grp Invest Biodiversidad & Ecol Aplicada, Santa Marta, ColombiaUniv Tecn Particular Loja, Dept Ciencias Biol, Loja, EcuadorInst Invest Biol Clemente Estable, Dept Ecol & Biol Evolut, Montevideo, UruguayUniv Autonoma Nayarit, Programa Acad Biol, Tepic, MexicoUNT, CONICET, Inst Ecol Reg, San Miguel De Tucuman, ArgentinaWestern Sydney Univ, Hawkesbury Inst Environm, Sydney, NSW, AustraliaFlorida Int Univ, Coll Arts Sci & Educ, Grad Studies, Miami, FL 33199 USAUniv Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USAUniv Cambridge, Dept Zool, Downing St, Cambridge CB2 3EJ, EnglandTrier Univ, Dept Biogeog, Trier, GermanyUniv Amsterdam, IBED, Amsterdam, NetherlandsCtr Ecol Fonct & Evolut, Montpellier, FranceInst Curicaca, Rio Grande Do Sul, BrazilUniv Fed Rio Grande do Sul, Dept Ecol, Porto Alegre, RS, BrazilCUNY, Dept Biol, Newark, NY USAInst Alexander von Humboldt, Villa De Leyva 257, ColombiaMNHN, Inst Systemat, Evolut, Biodiversite, Paris, FranceUniv Los Andes, Chem Dept, Lab Adv Analyt Techn Nat Prod, Bogota, ColombiaUniv Rosario, Bogota, ColombiaFlorey Inst Neurosci & Mental Hlth, Parkville, Vic, AustraliaUniv Antioquia, Medellin, ColombiaUniv Magallanes, Punta Arenas, ChileUniv Fed Rio Grande do Sul, Ecol Dept, Porto Alegre, RS, BrazilUniv Estadual Paulista, Campus Rio Claro, Rio Claro, SP, BrazilHarvard Univ, Organism & Evolutionary Biol, Cambridge, MA 02138 USAUniv Distrital Francisco Jose Caldas, Bogota, ColombiaUniv Icesi, Dept Biol, Cali, ColombiaUniv Wien, Dept Integrat Zool, Vienna, AustriaConsejo Nacl Invest Cient & Tecn, Fdn Miguel Lillo, Unidad Ejecutora Lillo, San Miguel De Tucuman, Tucuman, ArgentinaUniv EAFIT, Medellin, ColombiaUniv Estadual Paulista, UNESP, Sao Jose Do Rio Preto, SP, BrazilUniv Estadual Paulista Julio Mesquita, Araraquara, BrazilUniv Estadual Paulista, Lab Ecol & Evolucao, Sao Paulo, SP, BrazilUniv Estadual Paulista, Sao Paulo, BrazilUniv Estadual Paulista, Campus Rio Claro, Rio Claro, SP, Brazi
