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Oyanedel,Alejandra; Habit,Evelyn; Belk,Mark C.; Solis-Lufí,Katherin; Colin,Nicole; Gonzalez,Jorge; Jara,Alfonso; Muñoz-Ramírez,Carlos. P.. |
ABSTRACT We document movement patterns and home range of Diplomystes camposensis, an endemic and threatened freshwater catfish from Chile. We tracked the movements of seven individuals of different body size (13.5 to 19 cm SL) using portable radio telemetry equipment to investigate movement patterns in relation to day/night activity and habitat use in the San Pedro River (Valdivia Basin). Tracked movements and model-based analyses revealed that D. camposensis has a large home range and high mobility. The average home range was 0.068163 ± 0.033313 km2, and the average area of higher activity was 0.005646 ± 0.011386 km2. The mean linear home range was 387.4 m. The results also showed that movements were longer during the night, supporting nocturnal habits.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endangered species; Fragmentation; Habitat use; Kernel; Radio telemetry. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100222 |
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De Fries,Lucas; Hahn,Lisiane; Meneses,Bruna Arbo; Câmara,Luís Fernando da; Becker,Fernando Gertum; Hartz,Sandra Maria. |
ABSTRACT We investigated whether the movement and distribution of the migratory fish, Salminus brasiliensis, were affected by a small reservoir. We also examined how movement and distribution were related to water temperature, flow, and rainfall. In December 2011 and January 2012, 24 individuals were captured downstream from the dam, tagged with radio transmitters and released in the reservoir (5.46 km² total area). After being released in the reservoir, 18 of the 24 tagged fish travelled upstream, taking an average of 16.6 days to leave the reservoir, with daily movements varying from < 5 km/day to > 24 km/day. However, only seven tagged specimens (29.16%) returned to the lower reservoir section, while the rest remained in the intermediate and upper... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental impact; Fragmentation; Habitat use; Hydroelectric power; Radio telemetry. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000300202 |
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