[MARMAM] Pinnipeds and reactions to light

lchilvers at doc.govt.nz lchilvers at doc.govt.nz
Thu Apr 27 15:00:30 PDT 2006


	Hi

	New Zealand sea lions are currently caught in high numbers (150
animals in the 2005/06 fishing season) in squid trawl nets in the NZ
sub-Antarctic.  SLEDs (sea lion exclusion devices) are used within this
fishery - however there is currently no effective underwater monitoring
mechanisms in place to determine strike or escape rate.  A video capable of
filming at low light is currently being investigated - as are light sources
- white, red and infra-red light.

	None of these light sources have been tested on NZ sea lions to
determine their degree of attraction / avoidance or neutrality.  This email
is to ask for information / ideas on wild seal/sea lion behavioural
experiments that have tested reactions of animals to light sources both on
land and in water and how to measure "reactions".  Preferably not captive /
feeding trials as there are no captive NZ sea lions in the world, however if
you think it will help to design a study please send them through.

	Thank you

	Louise  


Dr. B. Louise Chilvers
Marine Mammal Scientist
Marine Conservation Unit
Department of Conservation
P.O. Box 10-420
Wellington
Ph 04 4713073
Fax 04 4713041
Email lchilvers at doc.govt.nz


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