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Feeding Behaviour in Loggerhead Sea Turtles (Caretta caretta): Collection of Movement Data Representative of Feeding Events
Linköping University, Department of Physics, Chemistry and Biology.
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 40 credits / 60 HE creditsStudent thesis
Abstract [en]

With the different threats sea turtles are currently facing, such as habitat reduction and pollution, increase of fishing and harvesting of aquatic resources by Humans, or invasive species, it is important to learn as much as possible about their biology and behaviour in order to ensure the success of conservation programs. In this study, loggerhead sea turtles (Caretta caretta) feeding behaviour duration as well as energy expenditure approximation during a feeding event were tested and compared using two different types of food: green shore crabs (Carcinus maenas) or Japanese clam (Ruditapes phillipinarum) or Venus clams (Chamelea gallina). The data show that the turtles took longer to approach the crabs but took more time to eat the clams. However, comparison of energy expenditure values for the feeding phase showed no significant differences. The turtles were observed to eat the clams’ shell as well as their meat. These shells are rich in calcium, which is one possible explanation for this behaviour. This study shows that data loggers represent a viable tool for studying the behaviours of marine animals.

Place, publisher, year, edition, pages
2019. , p. 21
Keywords [en]
Clams, Crabs, Data logger, Calcium, Loggerhead, VeDBA, feeding behaviour
National Category
Behavioral Sciences Biology
Identifiers
URN: urn:nbn:se:liu:diva-158002ISRN: LITH-IFM-A-EX--19/3621--SEOAI: oai:DiVA.org:liu-158002DiVA, id: diva2:1328752
External cooperation
Oceanografic Valencia
Subject / course
Biology, Other
Presentation
2019-05-23, Schrödinger, linköping universitet 581 83, Linköping, 14:00 (English)
Supervisors
Examiners
Available from: 2019-06-25 Created: 2019-06-23 Last updated: 2019-06-25Bibliographically approved

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Feeding Behaviour in Loggerhead Sea Turtles (Caretta caretta)(639 kB)45 downloads
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Type fulltextMimetype application/pdf

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Ulrich, Marie
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CiteExportLink to record
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