Movement patterns and activity of the Brazilian snake-necked turtle Hydromedusa maximiliani (Testudines: Chelidae) in southeastern Brazil

Autor(es)

Famelli, Shirley ^{[1, 2]} ; Souza, Franco L. ^[3] ; Georges, Arthur ^[2] ; Bertoluci, Jaime ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Ciencias Biol, Escola Super Agr Luiz Queiroz, Ave Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[2] Univ Canberra, Inst Appl Ecol, Canberra, ACT 2601 - Australia

^[3] Univ Fed Mato Grosso do Sul, Ctr Ciencias Biol & Saude, BR-79070900 Campo Grande, MS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Amphibia-Reptilia; v. 37, n. 2, p. 215-228, 2016.
• Citações Web of Science: 1

Resumo

To investigate the movement patterns and activity of Hydromedusa maximiliani in southeastern Brazil, sixteen adult freshwater turtles (eight males and eight females) were monitored with radio-transmitters from October 2009 to November 2010. An additional 22 turtles (11 males and 11 females) were monitored with thread-bobbins over a 3-day period. Hydromedusa maximiliani showed strong tendency to remain close to the river course. The distance moved each day varied from 0 to 179 m/day (radio-tracking) and 1.5 to 201 m/day (thread-bobbins). Males moved greater distances than females during the mating season (August to November), while females exhibited pronounced movements associated with egg-laying (December to February). Male and female movements did not differ significantly. Straight line distancemeasurements, usually obtained by radio-tracking, underestimate actual movement distances, since the nonlinearity of movements is not captured by radio-tracking as opposed to spool tracking, even when long distances are travelled. Results from this study are important for establishing conservation strategies for this vulnerable species. (AU)

• Processo FAPESP: 09/00748-0 - Área de vida, uso e seleção de hábitat de Hydromedusa maximiliani (Testudines, Chelidae) no Parque Estadual Carlos Botelho, SP
• Beneficiário: Shirley Famelli da Costa
• Modalidade de apoio: Bolsas no Brasil - Doutorado