Coastal migratory connections of humpback whales, Megaptera Novaeangliae Borowski, 1871, southern Chile
There is not published information on a comparative analysis about interchange of individual humpback whales between coastal areas of aggregation of the species along southern Chilean coast. Here we present a comparison of individually photo-identified humpback whales obtained off northwestern Chiloé Island, in Patagonian and Fuegian fjords and in the Strait of Magellan near Carlos III Island , to discover movements and interchange of individuals. Comparison of photographs resulted in conclusive matches of four individuals within the four study locations: two whales from Canal Wide (49°55’S, 74°30’W), one whale from Canal Cockburn (54°18’S, 72°15’W) and a mother-calf pair off northwestern Chiloé Island matched whales found near Carlos III. The minimum linear distance between these summering locations are approximately 80 km from Canal Cockburn to Carlos III, 540 km from Carlos III to Canal Wide, and 1300 km from Carlos III to northwestern Chiloé Island. The trip from Chiloé Island to Strait of Magellan during 38 days in the same summer season represented a minimum mean speed of transit of 34 km/day. This study provides the first evidence of direct connection of individual humpback whales along the coast of southern Chile.
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Format: | Journal Contribution biblioteca |
Language: | English |
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UMAG, Punta Arenas (Chile)
2008
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Subjects: | Cetacea, Megaptera novaeangliae, Marine mammals, Migratory species, Aggregation, |
Online Access: | http://hdl.handle.net/1834/4165 |
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dig-aquadocs-1834-41652021-05-19T06:31:09Z Coastal migratory connections of humpback whales, Megaptera Novaeangliae Borowski, 1871, southern Chile Conecciones costeras migratorias de ballenas jorobadas megaptera Novaeangliae Borowski, 1781, en el sur de Chile Galleti, Bárbara Capella, Juan Gibbons, Jorge Cabrera, Elsa Cetacea Megaptera novaeangliae Marine mammals Migratory species Aggregation There is not published information on a comparative analysis about interchange of individual humpback whales between coastal areas of aggregation of the species along southern Chilean coast. Here we present a comparison of individually photo-identified humpback whales obtained off northwestern Chiloé Island, in Patagonian and Fuegian fjords and in the Strait of Magellan near Carlos III Island , to discover movements and interchange of individuals. Comparison of photographs resulted in conclusive matches of four individuals within the four study locations: two whales from Canal Wide (49°55’S, 74°30’W), one whale from Canal Cockburn (54°18’S, 72°15’W) and a mother-calf pair off northwestern Chiloé Island matched whales found near Carlos III. The minimum linear distance between these summering locations are approximately 80 km from Canal Cockburn to Carlos III, 540 km from Carlos III to Canal Wide, and 1300 km from Carlos III to northwestern Chiloé Island. The trip from Chiloé Island to Strait of Magellan during 38 days in the same summer season represented a minimum mean speed of transit of 34 km/day. This study provides the first evidence of direct connection of individual humpback whales along the coast of southern Chile. A lo largo de la costa del sur de Chile existen varias áreas de agregación de ballenas jorobadas durante el verano austral, pero no hay información publicada que analice el intercambio de ballenas entre ellas. En este trabajo se presenta una comparación de ballenas jorobadas identificadas individualmente por fotografías obtenidas en el noroeste de la isla de Chiloé, en los fiordos Patagónicos y Fueguinos y cerca de la isla Carlos III en el estrecho de Magallanes, con el fin de descubrir el movimiento e intercambio entre estas áreas. La comparación resultó en el hallazgo de cuatro ballenas comunes entre el estrecho de Magallanes y los demás sectores: dos ballenas del canal Wide (49°55’S, 74°30’W), una del canal Cockburn (54°18’S, 72°15’W) y una madre con su cría del noroeste de la isla de Chiloé también se encontraron en los alrededores de la isla Carlos III. La distancia lineal mínima entre estas localidades de verano es aproximadamente 80 km desde el canal Cockburn a Carlos III, 540 km desde Carlos III al canal Wide, y 1300 km desde Carlos III al noroeste de la isla de Chiloé. El viaje desde el noroeste de la isla de Chiloé hacia el estrecho de Magallanes en 38 días durante el mismo verano representa una velocidad mínima promedio de tránsito de 34 km/día. Este estudio proporciona la primera evidencia de una conexión directa de individuos de ballena jorobada a lo largo de la costa del sur de Chile. Published Humpback Whales 2012-02-13T11:30:29Z 2012-02-13T11:30:29Z 2008 Journal Contribution Refereed Article Anales del Instituto de la Patagonia, 36 (2), p. 13--18. 0718-686X http://hdl.handle.net/1834/4165 en http://www.scielo.cl/pdf/ainpat/v36n2/art02.pdf 10.4067/S0718-686X2008000200002 Chile UMAG, Punta Arenas (Chile) |
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Cetacea Megaptera novaeangliae Marine mammals Migratory species Aggregation Cetacea Megaptera novaeangliae Marine mammals Migratory species Aggregation |
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Cetacea Megaptera novaeangliae Marine mammals Migratory species Aggregation Cetacea Megaptera novaeangliae Marine mammals Migratory species Aggregation Galleti, Bárbara Capella, Juan Gibbons, Jorge Cabrera, Elsa Coastal migratory connections of humpback whales, Megaptera Novaeangliae Borowski, 1871, southern Chile |
description |
There is not published information on a comparative analysis about interchange of individual humpback whales between coastal areas of aggregation of the species along southern Chilean coast. Here we
present a comparison of individually photo-identified humpback whales obtained off northwestern Chiloé Island, in Patagonian and Fuegian fjords and in the Strait of Magellan near Carlos III Island , to discover movements and interchange of individuals. Comparison of photographs resulted in conclusive matches of four individuals within the four study locations: two whales from Canal Wide (49°55’S, 74°30’W), one whale from Canal Cockburn (54°18’S, 72°15’W) and a mother-calf pair off northwestern Chiloé Island matched whales found near Carlos III. The minimum linear distance between these summering locations are approximately 80 km from Canal Cockburn to Carlos III, 540 km from Carlos III to Canal Wide, and 1300 km from Carlos III to northwestern Chiloé Island. The trip from Chiloé Island to Strait of Magellan during 38 days in the same summer season represented a minimum mean speed of transit of 34 km/day. This study provides the first evidence of direct connection of individual humpback whales along the coast of southern Chile. |
format |
Journal Contribution |
topic_facet |
Cetacea Megaptera novaeangliae Marine mammals Migratory species Aggregation |
author |
Galleti, Bárbara Capella, Juan Gibbons, Jorge Cabrera, Elsa |
author_facet |
Galleti, Bárbara Capella, Juan Gibbons, Jorge Cabrera, Elsa |
author_sort |
Galleti, Bárbara |
title |
Coastal migratory connections of humpback whales, Megaptera Novaeangliae Borowski, 1871, southern Chile |
title_short |
Coastal migratory connections of humpback whales, Megaptera Novaeangliae Borowski, 1871, southern Chile |
title_full |
Coastal migratory connections of humpback whales, Megaptera Novaeangliae Borowski, 1871, southern Chile |
title_fullStr |
Coastal migratory connections of humpback whales, Megaptera Novaeangliae Borowski, 1871, southern Chile |
title_full_unstemmed |
Coastal migratory connections of humpback whales, Megaptera Novaeangliae Borowski, 1871, southern Chile |
title_sort |
coastal migratory connections of humpback whales, megaptera novaeangliae borowski, 1871, southern chile |
publisher |
UMAG, Punta Arenas (Chile) |
publishDate |
2008 |
url |
http://hdl.handle.net/1834/4165 |
work_keys_str_mv |
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