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Bibliography Record

  Kikuchi, Mumi; Silva, Vera Maria Ferreira da; Rosas, Fernando César Weber; Souza, Diogo; Miyazaki, Nobuyuki
  2012
The implications of turning behaviour performed by Amazonian manatees after release into the wild.
Journal of Ethology 30(1): 187-190. 1 tab. 2 figs. DOI:10.1007/s10164-011-0290-0. Jan. 2012.
–ABSTRACT: Sirenians have dichromatic colour vision and tactile hairs but have not developed underwater echolocation. Amazonian manatees (Trichechus inunguis) live in turbid water and it has been unclear how they understand their surroundings. In this study, we recorded the 3D movements of two captive-raised Amazonian manatees. The results revealed that the manatees always swam in a circular pattern. Both animals used slower, narrower turning motions as they approached the flooded forests, which are abundant in aquatic vegetation. Therefore, we suggest that these two manatees swam in a circular pattern to detect all directions of their surroundings especially using sensitive facial bristles.

Related Index Records

6 related index terms

Bacteriology
(SEE ALSO Virology)
   2012Mathews, Da Silva et al. (TI; Brazil; Leptospira spp. antibodies)
Behavior, Investigative, and Sense Perception
(SEE ALSO: Sense Organs; Sound Production)
   2012Kikuchi et al. (TI; turning behavior; vision and tactile hairs)
Brazil
   2012Mathews, Da Silva et al. (TI; Toxoplasma gondii & Leptospira spp. antibodies)
Parasites: Toxoplasma gondii
   2012Mathews, Da Silva et al. (TI; Brazil; antibodies)
Sense Organs
(SEE ALSO: Behavior, Investigative, and Sense Perception; Brain and Nervous System; Digestive System; Skeleton; Sound Production)
   2012Kikuchi et al. (TI; turning behavior; vision and tactile hairs)
Trichechus inunguis (Natterer in von Pelzeln, 1883) Thomas and Lydekker, 1897
   2012Kikuchi et al. (turning behavior; vision and tactile hairs)
   2012Mathews, Da Silva et al. (Brazil; Toxoplasma gondii & Leptospira spp. antibodies)