Data/hora: 11/06/2024 18:02:15

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 11/01/1999
Data da última atualização: | 30/03/2017
Autoria: | CAMPOS, Z.; COUTINHO, M.; GRIGG, G.; McCALLUM, H.
Afiliação: | EMBRAPA. Centro de Pesquisa Agropecuaria do Pantanal (Corumba, MS). University of Queensland (Brisbane, Australia).
Título: | Body temperature of free range caiman (Caiman crocodilus yacare) in the southern Pantanal, Brazil.
Ano de publicação: | 1998
Fonte/Imprenta: | In: CROCODILIAN BIOLOGY AND EVOLUTION CONFERENCE, 1998, Queensland. Programme and abstracts. Queensland: Univesity of Queensland, 1998. p.21.
Idioma: | Inglês
Conteúdo: | Body temperature was measured with a thermoprobe inserted 15 cm into the cloaca of 448 caimans of all sizes, at night, between August 1996 and October 1997. The resultsshow that caiman temperature follows mean water/air temperature, varying significantly with season. From July to September Tb varied from 24.6 +- 0.3 to 27.2 +- 0.4 C and from October to April it varied from 28.9 +- 0.4 to 31.1 +- 0.3 C. Basking behavour of a clutch of 28 hatchlings was observed between 0800-1700 hrs in August 1996. Individuals typically exposed themselves to the sun early and during the day but retreated to the water at night. This suggested a diurnal pattern of Tb, which has been the subject of a pilot study by radiotelemetry. A single adult female (73.5 cm SVL, 9.8 kg BW) was implanted with a temperature-sensitive trnasmitter (Sirtrack) and monitored during July-October 1997. Values of Tb varied between 19.8 and 34.3 C, with air ranging from 15.1-35.3 C and water from 19.7-30.8 C. Two distinct daily patterns were seen. On warm days, Tb increased in the morning, peaked at midday and declined during the afternoon. Lowest were recorded in the early hours of the norming. On cold days, Tb remained almost uniform throughout the day and night. We called this pattern "thermolazy"; on warm days it emerges to back. On cool days, it remains in the water. The study is continuing.
Palavras-Chave: | Caiman crodilus yacare.
Thesagro: | Jacaré.
Thesaurus Nal: | Brazil; Pantanal.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (36418-1) - UPC - SP - PP - SP15764 -  - 15764 - DIS