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Previous issue date: 2017-08-31 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Sinais ac?sticos e vibrat?rios s?o utilizados por v?rias esp?cies de formigas em intera??es intra e interespec?ficas, apesar de serem pouco estudados. Entre as modalidades de produ??o de sinais vibroac?sticos est?o a estridula??o e a percuss?o. Estes sinais podem transmitir mensagens de alarme, distresse, recrutamento, ataque, ativa??o da col?nia, pistas para o provisionamento de larvas, avalia??o de recursos alimentares e n?o receptividade das f?meas. Tendo isso em vista, este estudo teve como objetivo investigar a utiliza??o de sinais ac?sticos na esp?cie Neoponera villosa (Hymenoptera, Formicidae, Ponerinae), caracterizando a estridula??o de oper?rias, gynes e machos, analisando a resposta de col?nias de N. villosa diante da estridula??o de coespec?ficos e avaliando a resposta ac?stica das col?nias ? perturba??o do ninho. Os resultados mostraram que os sinais estridulat?rios de oper?rias de N. villosa s?o compostos majoritariamente por sequ?ncias monossib?licas de chilros, sendo um chilro composto por uma ?nica sequ?ncia de pulsos. Entretanto, a maior parte dos chilros das castas reprodutivas apresentaram uma sequ?ncia de pulsos de baixa amplitude antecedendo a sequ?ncia de pulsos principal, sendo, dessa forma, constitu?dos por duas sub-unidades e caracterizando-se como chilros dissil?bicos. Os sinais estridulat?rios apresentaram ainda diferen?as significativas entre as castas quanto ao intervalo entre chilros, n?mero de pulsos por chilro, intervalo entre pulsos e taxa de emiss?o de pulsos. Diferen?as entre col?nias foram encontradas na estridula??o de gynes e machos. As col?nias de N. villosa n?o responderam aos sinais estridulat?rios de oper?rias, com mudan?a do padr?o comportamental em resposta apenas ? presen?a de companheiras de ninho e de n?o companheiras, mas sem diferen?a de resposta entre os testes com presen?a e aus?ncia de estridula??o. No contexto de perturba??o do ninho, as col?nias de N. villosa n?o responderam com emiss?o de sinais estridulat?rios, mas sim com emiss?o de sinais ac?sticos produzidos atrav?s de percuss?o. / Acoustic and vibratory signals are used by several ant species in intraspecific and interspecific interactions, although studies concerning these signal modalities are scarce. Stridulation and drumming are among the main ways of producing vibroacoustic signals. These signals can transmit messages relative to alarm, distress, recruitment, attack, colony activation, clues for provisioning of larvae, evaluation of food resources and non-receptivity of females. The aim of this study was to investigate the use of acoustic signals in Neoponera villosa (Hymenoptera, Formicidae, Ponerinae). In order to achieve our aim, we characterized workers, gynes and males stridulation; we analyzed N. villosa colonies? response to workers? stridulation and evaluated the acoustic response of N. villosa colonies to nest disturbance. The results showed that stridulatory signals of N. villosa workers are composed mainly of monosyllabic chirp trains, with chirps composed of a single sequence of pulses. Nevertheless, the majority of the chirps produced by the reproductive castes presented a low amplitude pulse sequence preceding the main high amplitude sequence of pulses. These chirps were composed of two subunits and, thus, were identified as disyllabic chirps. The stridulatory signals presented significant differences among the N. villosa castes regarding the inter-chirp interval, the number of pulses per chirp, the inter-pulse interval and the pulse repetition rate. In addition, gynes? and males? stridulation presented significant differences according to their colonies. N. villosa colonies did not respond to the emission of workers? stridulatory signals. Behavioral pattern changes occured only in response to nestmate or non nestmate presence, without any response difference between tests with stridulanting workers and mute workers. In nest disturbance context, N. villosa colonies did not respond with stridulatory signal emission, but with the emission of acoustic signals produced by drumming.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24667 |
| Date | 31 August 2017 |
| Creators | Medeiros, Jeniffer da C?mara |
| Contributors | 31568769415, Garda, Adrian Antonio, 80729568172, Hrncir, Michael, 23191361855, Ch?line, Nicolas G?rard, 23582007863, Ch?line, Ronara de Souza Ferreira, 04659204626, Mobley, Renata Santoro de Sousa Lima, Souza, Arrilton Ara?jo de |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM PSICOBIOLOGIA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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