A model of loggerhead sea turtle (Caretta caretta) habitat and movement in the oceanic North Pacific.
Habitat preferences for juvenile loggerhead turtles in the North Pacific were investigated with data from two several-year long tagging programs, using 224 satellite transmitters deployed on wild and captive-reared turtles. Animals ranged between 23 and 81 cm in straight carapace length. Tracks were...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3764129?pdf=render |
| _version_ | 1811279039389761536 |
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| author | Melanie Abecassis Inna Senina Patrick Lehodey Philippe Gaspar Denise Parker George Balazs Jeffrey Polovina |
| author_facet | Melanie Abecassis Inna Senina Patrick Lehodey Philippe Gaspar Denise Parker George Balazs Jeffrey Polovina |
| author_sort | Melanie Abecassis |
| collection | DOAJ |
| description | Habitat preferences for juvenile loggerhead turtles in the North Pacific were investigated with data from two several-year long tagging programs, using 224 satellite transmitters deployed on wild and captive-reared turtles. Animals ranged between 23 and 81 cm in straight carapace length. Tracks were used to investigate changes in temperature preferences and speed of the animals with size. Average sea surface temperatures along the tracks ranged from 18 to 23 °C. Bigger turtles generally experienced larger temperature ranges and were encountered in warmer surface waters. Seasonal differences between small and big turtles suggest that the larger ones dive deeper than the mixed layer and subsequently target warmer surface waters to rewarm. Average swimming speeds were under 1 km/h and increased with size for turtles bigger than 30 cm. However, when expressed in body lengths per second (bl s(-1)), smaller turtles showed much higher swimming speeds (>1 bl s (-1) ) than bigger ones (0.5 bl s(-1)). Temperature and speed values at size estimated from the tracks were used to parameterize a habitat-based Eulerian model to predict areas of highest probability of presence in the North Pacific. The model-generated habitat index generally matched the tracks closely, capturing the north-south movements of tracked animals, but the model failed to replicate observed east-west movements, suggesting temperature and foraging preferences are not the only factors driving large-scale loggerhead movements. Model outputs could inform potential bycatch reduction strategies. |
| first_indexed | 2024-04-13T00:47:41Z |
| format | Article |
| id | doaj.art-555471bbff484d25be9cb95f83cf0611 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T00:47:41Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-555471bbff484d25be9cb95f83cf06112022-12-22T03:09:58ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0189e7327410.1371/journal.pone.0073274A model of loggerhead sea turtle (Caretta caretta) habitat and movement in the oceanic North Pacific.Melanie AbecassisInna SeninaPatrick LehodeyPhilippe GasparDenise ParkerGeorge BalazsJeffrey PolovinaHabitat preferences for juvenile loggerhead turtles in the North Pacific were investigated with data from two several-year long tagging programs, using 224 satellite transmitters deployed on wild and captive-reared turtles. Animals ranged between 23 and 81 cm in straight carapace length. Tracks were used to investigate changes in temperature preferences and speed of the animals with size. Average sea surface temperatures along the tracks ranged from 18 to 23 °C. Bigger turtles generally experienced larger temperature ranges and were encountered in warmer surface waters. Seasonal differences between small and big turtles suggest that the larger ones dive deeper than the mixed layer and subsequently target warmer surface waters to rewarm. Average swimming speeds were under 1 km/h and increased with size for turtles bigger than 30 cm. However, when expressed in body lengths per second (bl s(-1)), smaller turtles showed much higher swimming speeds (>1 bl s (-1) ) than bigger ones (0.5 bl s(-1)). Temperature and speed values at size estimated from the tracks were used to parameterize a habitat-based Eulerian model to predict areas of highest probability of presence in the North Pacific. The model-generated habitat index generally matched the tracks closely, capturing the north-south movements of tracked animals, but the model failed to replicate observed east-west movements, suggesting temperature and foraging preferences are not the only factors driving large-scale loggerhead movements. Model outputs could inform potential bycatch reduction strategies.http://europepmc.org/articles/PMC3764129?pdf=render |
| spellingShingle | Melanie Abecassis Inna Senina Patrick Lehodey Philippe Gaspar Denise Parker George Balazs Jeffrey Polovina A model of loggerhead sea turtle (Caretta caretta) habitat and movement in the oceanic North Pacific. PLoS ONE |
| title | A model of loggerhead sea turtle (Caretta caretta) habitat and movement in the oceanic North Pacific. |
| title_full | A model of loggerhead sea turtle (Caretta caretta) habitat and movement in the oceanic North Pacific. |
| title_fullStr | A model of loggerhead sea turtle (Caretta caretta) habitat and movement in the oceanic North Pacific. |
| title_full_unstemmed | A model of loggerhead sea turtle (Caretta caretta) habitat and movement in the oceanic North Pacific. |
| title_short | A model of loggerhead sea turtle (Caretta caretta) habitat and movement in the oceanic North Pacific. |
| title_sort | model of loggerhead sea turtle caretta caretta habitat and movement in the oceanic north pacific |
| url | http://europepmc.org/articles/PMC3764129?pdf=render |
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