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Spike dives of juvenile southern bluefin tuna (Thunnus maccoyii): a navigational role?

Willis, Jay; Phillips, John; Muheim, Rachel LU ; Javier Diego-Rasilla, Francisco and Hobday, Alistair J. (2009) In Behavioral Ecology and Sociobiology 64(1). p.57-68
Abstract
Tunas make sharp descents and ascents around dawn and dusk called spike dives. We examine spike dives of 21 southern bluefin tuna (Thunnus maccoyii) implanted with archival tags in the Great Australian Bight. Using a new way to categorize this behavior, we show that spike dives are similar among all the fish in the study. The dive profiles are mirror images at dawn and dusk and are precisely timed with respect to sunrise and sunset. We analyze the possible reasons for spike dives, considering the timing of spike dives, the characteristic dive profile, and the tuna's magnetic habitat. In addition, we present anatomical evidence for elaboration of the pineal organ, which is light mediated and has been implicated in navigation in other... (More)
Tunas make sharp descents and ascents around dawn and dusk called spike dives. We examine spike dives of 21 southern bluefin tuna (Thunnus maccoyii) implanted with archival tags in the Great Australian Bight. Using a new way to categorize this behavior, we show that spike dives are similar among all the fish in the study. The dive profiles are mirror images at dawn and dusk and are precisely timed with respect to sunrise and sunset. We analyze the possible reasons for spike dives, considering the timing of spike dives, the characteristic dive profile, and the tuna's magnetic habitat. In addition, we present anatomical evidence for elaboration of the pineal organ, which is light mediated and has been implicated in navigation in other vertebrates. The new evidence presented here leads us to suspect that spike dives represent a survey related to navigation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Polarized light, Magnetic navigation, Compass, Migration, Pineal gland, Archival tags
in
Behavioral Ecology and Sociobiology
volume
64
issue
1
pages
57 - 68
publisher
Springer
external identifiers
  • wos:000270979500007
  • scopus:77952669206
ISSN
1432-0762
DOI
10.1007/s00265-009-0818-2
language
English
LU publication?
yes
id
f2b9789c-fb9e-4d6b-b248-9ecb7478e81f (old id 1507129)
date added to LUP
2009-11-23 09:43:00
date last changed
2017-12-10 03:59:40
@article{f2b9789c-fb9e-4d6b-b248-9ecb7478e81f,
  abstract     = {Tunas make sharp descents and ascents around dawn and dusk called spike dives. We examine spike dives of 21 southern bluefin tuna (Thunnus maccoyii) implanted with archival tags in the Great Australian Bight. Using a new way to categorize this behavior, we show that spike dives are similar among all the fish in the study. The dive profiles are mirror images at dawn and dusk and are precisely timed with respect to sunrise and sunset. We analyze the possible reasons for spike dives, considering the timing of spike dives, the characteristic dive profile, and the tuna's magnetic habitat. In addition, we present anatomical evidence for elaboration of the pineal organ, which is light mediated and has been implicated in navigation in other vertebrates. The new evidence presented here leads us to suspect that spike dives represent a survey related to navigation.},
  author       = {Willis, Jay and Phillips, John and Muheim, Rachel and Javier Diego-Rasilla, Francisco and Hobday, Alistair J.},
  issn         = {1432-0762},
  keyword      = {Polarized light,Magnetic navigation,Compass,Migration,Pineal gland,Archival tags},
  language     = {eng},
  number       = {1},
  pages        = {57--68},
  publisher    = {Springer},
  series       = {Behavioral Ecology and Sociobiology},
  title        = {Spike dives of juvenile southern bluefin tuna (Thunnus maccoyii): a navigational role?},
  url          = {http://dx.doi.org/10.1007/s00265-009-0818-2},
  volume       = {64},
  year         = {2009},
}