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| Leroy, Emmanuelle; Royer, Jean-yves; Alling, Abigail; Maslen, Ben; Rogers, Tracey L.. |
| Blue whales were brought to the edge of extinction by commercial whaling in the twentieth century and their recovery rate in the Southern Hemisphere has been slow; they remain endangered. Blue whales, although the largest animals on Earth, are difficult to study in the Southern Hemisphere, thus their population structure, distribution and migration remain poorly known. Fortunately, blue whales produce powerful and stereotyped songs, which prove an effective clue for monitoring their different ‘acoustic populations.’ The DGD-Chagos song has been previously reported in the central Indian Ocean. A comparison of this song with the pygmy blue and Omura’s whale songs shows that the Chagos song are likely produced by a distinct previously unknown pygmy blue whale... |
| Tipo: Text |
Palavras-chave: Animal migration; Biogeography; Marine biology; Marine mammals. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00691/80280/83365.pdf |
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| Rondón Médicci, M.; Buitrago, J.; J. Guada, H.; Eckert, K. L.. |
| Mediante análisis de captura-marcaje-recaptura y morfometría de las hembras anidadoras de la tortuga cardón (Dermochelys coriacea) en las playas de Cipara y Querepare, península de Paria, Venezuela entre los años 2000 y 2006, se presentan resultados de migraciones, localidades con recapturas, morfometría y crecimiento de las hembras adultas y se estima el tamaño de la población. De 502 hembras marcadas 41 han sido observadas reemigrando. El intervalo entre reemigraciones fue de 2.5 años. En Querepare las reclutas y las reemigrantes aumentaron de manera significativa y en Cipara las hembras nuevas no han aumentado, pero sí las recapturas. 38 hembras fueron observadas en más de una playa en la misma temporada. 73.6 % entre Cipara y Querepare (30 km), 10.5 %... |
| Tipo: Journal Contribution |
Palavras-chave: Marine turtles; Population size (in number); Size; Animal migration. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4398 |
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