Saturday, 16 August 2014

Sound Communication and Social Behavior in an Amazonian River Turtle (Podocnemis expansa) - via Herp Digest

Herpetologica
Vol. 70, Issue 2 (Jun 2014)No Access
Camila Rudge Ferrara 1,2,3, Richard C. Vogt 1,2,4,7, Renata S. Sousa-Lima 5, Bruno M.R. Tardio 6, and Virginia Campos Diniz Bernardes 1,3,4
1 Centro de Estudos de Quelônios da Amazônia, Instituto Nacional de Pesquisas da Amazônia, Amazon, Brazil, 69083-220
2 Associação de Ictiólogos e Herpetólogos da Amazônia—AIHA, Amazonas, Brazil, 69083-220
3 Wildlife Conservation Society—Brazil, Manaus, Amazonas, Brazil
4  Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia—INPA, Rua André Araújo, Manaus, Amazonas, Brazil, 69067-375
5  Laboratório de Bioacústica, Departamento de Fisiologia, Centro de Biociências/Universidade Federal do Rio Grande do Norte, Natal, RN—Brasil and Bioacoustics Research Program, Cornell Lab of Ornithology, Ithaca, NY, USA
6 Instituto Chico Mendes- ICMBio, Brazil

7Correspondence: e-mail, vogt@inpa.gov.br or richard@pq.cnpq.br
Associate Editor: Ryan Taylor

Abstract:

The social behavior of turtles during the nesting season can be attributed to a series of functions such as reducing predation, increasing hatchling survivorship, and information exchange between nesting females. However, the mechanism(s) used to remain in a group during the different phases of nesting behavior has yet to be explained. The objective of this study is to document the sounds produced by Giant South American River Turtle, Podocnemis expansa, during the nesting period, and identify how acoustic mechanisms might facilitate social behavior and group aggregation during this period. >From September 2009 to October 2011, the sound repertoire of P. expansa was identified during the nesting period, which begins with the migration of the turtles from the flooded forests to the nesting beaches and terminates when the hatchlings emerge and the females migrate with the hatchlings to the flooded forests. Sounds were recorded when the turtles were active in different behavioral patterns (1) migrating; (2) aggregating in front of the nesting beaches before basking; (3) nesting at night; (4) waiting in the water without nesting or after they have nested; and (5) waiting for the arrival of the hatchlings. We observed six types of sound in the recordings of turtles made during the nesting period. These data indicate that this species is social, and that sound plays an important role in the synchronization of the activities of groups during the nesting season.
Accepted: January 7, 2014

Literature Cited

Alho, C.J.R., and F.M. Pádua. 1982. Reproductive parameters and nesting behavior of the Amazon turtle Podocnemis expansa (Testudinata: Pelomedusidae) in Brazil. Canadian Journal of Zoology 60:97103. CrossRef
Bernardo, J. 1996. The particular maternal effect of propagule size, especially egg size: Patterns, models, quality of evidence and interpretation. American Zoology 36:216236.
Bernardo, J., and P.T. Plotkin. 2006. An evolutionary perspective on the arribada phenomenon and reproductive behavioral polymorphism of olive ridley sea turtles (Lepidochelys olivacea). Pp. 5987 In P.T. Plotkin (Ed.), Biology and Conservation of Ridley Sea Turtles. Johns Hopkins University Press, USA.
Bradbury, J.W., and S. Vehrencamp. 1998. Principles of Animal Communication. Sinauer Associates, Netherlands.
Britton, A.R.C. 2001. Review and classification of call types of juvenile crocodilians and factors affecting distress calls. Pp. 364377 In G.C. Grigg, F. Seebacher, and C.E. Franklin (Eds.), Crocodilian Biology and Evolution. Surrey Beatty & Sons, Australia.
Carr, A.F. 1967. So Excellent a Fishe: The Natural History of Sea Turtles. Natural History Press, USA.
Doody, J.E., M.A. Young, M.D. Welsh, A.L. Pauza, R.L. Pepper, and M.A. Alderman. 2001. Embryonic aestivation and emergence behavior in the Pig-Nosed Turtle, Carettochelys insculpta. Canadian Journal of Zoology 79:10621072. CrossRef
Doody, J.S., J.E. Young, and A. Georges. 2002. Sex differences in activity and movements in the Pig-nosed Turtle, Carettochelys insculpta, in the wet-dry tropics of Australia. Copeia 2002:93103. BioOne
Doody, J.S., R.A. Sims, and A. Georges. 2003. Gregarious behavior of nesting turtles (Carettochelys insculpta) does not reduce nest predation risk. Copeia 2003:894898. BioOne
Ferrara, C.R., L. Schneider, R.C. Vogt, and J. Burger. 2009. The role of receptivity in the courtship behavior of Podocnemis erythrocephala in captivity. Acta Ethologica 12:121125. CrossRef
Ferrara, C.R., L. Schneider, and R.C. Vogt. 2010. Natural history notes: Podocnemis expansa (pre-nesting basking behavior). Herpetological Review 41:72.
Ferrara, C.R., R.C. Vogt, and R.S. Sousa-Lima. 2012. Turtle vocalizations as the first evidence of post-hatching parental care in chelonians. Journal of Experimental Psychology 2012:19.
Ferreira Junior, P.D., and P.T.A. Castro. 2003. Geological control of Podocnemis expansa and Podocnemis unifilis nesting areas in Rio Javaés, Bananal Island, Brazil. Acta Amazônica 33:445468. CrossRef
Forrest, T.G. 1994. From sender to receiver: Propagation and environmental effects on acoustic signals. American Zoologist 34:644654.
Forrest, T.G., G.L. Miller, and J.R. Zagar. 1993. Sound propagation in shallow water: Implications for acoustic communication by aquatic animals. Bioacoustics: The International Journal of Animal Sound and its Recording 4:259270.
Galeotti, P., R. Sacchi, M. Fasola, and D. Ballasina. 2005. Do mounting vocalisations in tortoises have a communication function? A comparative analysis. Herpetological Journal 15:6171.
Gelfand, D.L., and G.F. McCracken. 1986. Individual variation in the isolation calls of Mexican free-tailed bat pups (Tadarida brasiliensis mexicana). Animal Behaviour 34:10781086. CrossRef
Giles, J. 2005. The Underwater Acoustic Repertoire of the Long-necked, Freshwater Turtle, Chelodina oblonga. Ph.D. Dissertation, Murdoch University, Australia.
Herzog, H.A., and G.M. Burghardt. 1977. Vocalization in juvenile crocodilians. Zeitschrift für Tierpsychologie 44:294304. PubMed
Hughes, D.A., and J.D. Richard. 1974. Nesting of sea turtles in Costa Rica. Marine Biology 24:97107. CrossRef
IBAMA. 2005. Reserva Biológica do Rio Trombetas, Floresta Nacional Saracá-Taquera. Conservando a Biodiversidade Promovendo a Sustentabilidade. Brazil
Krebs, J.R., and N.B. Davies. 1993. An Introduction to Behavioral Ecology. Blackwell Science Press, UK.
Marler, P. 1977. The structure of animal communication sounds. Pp. 1735 In T.H. Bullock (Ed.), Recognition of Complex Acoustic Signals. Dahlem Konferenzen, Germany.
Marler, P., and H. Slabbekoorn. 2004. Nature's Music: The Science of Birdsong. Elsevier Academic Press, the Netherlands.
Maxwell, F.D. 1911. Reports on inland and sea fisheries in the Thongwa, Myaungmya, and Bassein Districts and the turtle banks of the Irrawaddy Division. Government Printing Office, Burma.
Moll, D., and E.O. Moll. 2004. The Ecology, Exploitation, and Conservation of River Turtles. Oxford University Press, USA.
Morton, E.S. 1977. On the occurrence and significance of motivation–structural rules in some birds and mammal sounds. American Naturalist 111:855869. CrossRef
Pádua, L.F.M. 1981. Biologia da Reprodução, Conservação e Manejo da Tartaruga-da-Amazônia—Podocnemis expansa (Testudines, Pelomedusidae) na Reserva Biológica do Rio Trombetas, Pará. M.S. Thesis, Universidade de Brasília, Brazil.
Roosenburg, W.M. 1996. Maternal condition and nest site choice: An alternative for the maintenance of environmental sex determination? American Zoology 36:157168.
Spencer, R. 2002. Experimentally testing nest site selection: Fitness trade-offs and predation risk in turtles. Ecology 83:21362144. CrossRef
Urick, R.J. 1983. Principles of Underwater Sound. McGraw-Hill, USA.
Vanzolini, P.E. 1967. Notes on the nesting behavior of Podocnemis expansa in the Amazon Valley (Testudines: Pelomedusidae). Papeis Avulsos de Zoologia 20:191215.
Vince, M.A. 1968. Retardation as a factor in the synchronization of hatching. Animal Behaviour 16:332335. CrossRef, PubMed
Vogt, R.C. 1980. Natural history of Graptemys pseudogeographica and Graptemys ouachitensis in Wisconsin. Tulane Studies in Zoology 22:1748.
Vogt, R.C. 2008. Amazon Turtles. Bíblios, Peru.

Wiley, R.H., and D.G. Richards. 1982. Adaptations for acoustic communication in birds: Sound propagation and signal detection. Pp. 131181 In D.E. Kroodsma and E.H. Miller (Eds.), Acoustic Communication in Birds, Volume 1. Academic Press, USA

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