>
 
> FishingBoating-World.com
 
 
News Home Newsletters Powerboat-World Australian Cruising World Cruising MarineBusiness-World Animated Knots Video Gallery
MarineBusiness-World Photo Gallery
Sail-World.com : ARC: Sanctuary-grown fishes more vulnerable to haunting
ARC: Sanctuary-grown fishes more vulnerable to haunting

'Sanctuary-grown fishes like this school of Parrotfish tend to be more ’catchable’ than ordinary ones according to a latest study by Australian marine scientists'    © J.P. Krajewski / ARC Centre of Excellence    Click Here to view large photo

Fishes grown up in a sanctuary tend to be ‘pretty naïve’ and more 'catchable' than ordinary fishes based on a study conducted by Australian scientists from the ARC Centre of Excellence for Coral Reef Studies.

Big fish that have grown up in marine reserves don’t seem to know enough to avoid fishers armed with spear guns waiting outside the reserve.

The latest research by an Australian team working in the Philippines into the effects of marine reserves has found there is an unexpected windfall awaiting fishers who obey the rules and respect reserve boundaries – in the form of big, innocent fish wandering out of the reserve.

Sanctuary-grown fishes -  ARC Centre of Excellence Coral Reef Studies ©  
'There are plenty of reports of fish, both adults and juveniles, moving out of reserves and into the surrounding sea. Having grown up in an area where they were protected from hunting, we wondered how naïve they would be with regard to avoiding danger from humans,' says Fraser Januchowski-Hartley of the ARC Centre of Excellence for Coral Reef Studies.

The answer is: pretty naïve. 'Educated fish normally turn tail and flee when a diver armed with a spear gun approaches within firing range of them. The typical flight distance is usually just over four metres,' he explains.

'However in our studies of marine reserves in the Philippines, Vanuatu and Papua New Guinea, where spearfishing remains a major way of harvesting table fish, we discovered that reserve-reared fish were much less wary and allowed people to get much closer.

'The fish are literally more catchable.'

The team studied fish across the boundaries of marine reserves from 200m inside the protected areas to 200m into the fished areas. They used underwater markers and measuring tapes to measure the ‘flight initiation distance’ of fish targeted locally by spearfishers. This indicates how close a skin diver can approach to a large fish before it decides to turn and flee.

They found that target fish living in fished areas were typically much warier of divers, and took flight at distances a metre or two further away, than ones living within the reserve.

They also established that the ‘naivete radius’, whereby more catchable fishes spill out of the marine reserves extended for at least 150 metres from the boundary.

The team’s findings suggest that fishers are more likely to catch fish that stray out of the reserve, and so improve the local fish harvest. This may help fishers become more supportive of marine reserves.

Spearfisher catches a reserve-reared fish -  ARC Centre of Excellence Coral Reef Studies ©  
'In these parts of the oceans, spear fishing is still very much about survival for humans and putting food on the family table – so it is important that local fishers feel they are deriving some benefit from having a local area that is closed to fishing, or they may not respect it,' says Dr Nick Graham, a co-author on the study.

'This information is also useful in traditional reserves where fishing is taboo most of the time, but then they are opened for fishing by village elders just a few days a year.

'On the face of it, this work suggests that marine reserves can play an important role in putting more fish on the table of local communities in these tropical locations – as well as conserving overall fish stocks and replenishing those outside the reserve,' Januchowski-Hartley says.

The team’s paper ‘Spillover of fish naïveté from marine reserves’ by Fraser A. Januchowski-Hartley, Nicholas A. J. Graham, Joshua E. Cinner and Garry R. Russ appears in the latest issue of the scientific journal Ecology Letters.

ARC Centre of Excellence for Coral Reef Studies website


by ARC Center of Excellence for Coral Reef Studies

  

Click on the FB Like link to post this story to your FB wall

http://www.fishingboating-world.com/index.cfm?nid=104016

6:59 AM Thu 22 Nov 2012GMT


Click here for printer friendly version
Click here to send us feedback or comments about this story.







FishingBoating-World

Pontoon Boats are a hit with families and entertainers by Sanctuary Cove International Boat Show,
















Glacier Bay returns to Australia, re-launching at SCIBS by Sanctuary Cove International Boat Show,
















Power to the people at Sanctuary Cove International Boat Show by Sanctuary Cove International Boat Show,


































Changed boating conditions for ski race on Clarence River
VRFish calls for action on Anglesea River
Submit your entry to the BoatUS Angler 'Catch of the Month' contest
Channel 7 stage returns to Sanctuary Cove International Boat Show
Brisbane Tinnie & Tackle Show - this weekend!
Coastal infrastructure and species loss - Climate Change consequences *Feature
rescueME PLB1 – safety assured in one compact, light package *Feature
Japan's Antarctic whaling program harpooned
All Marine Spares hits the boat show trail in a trailer *Feature
Macquarie perch stocked into three northern Victorian waters
Local council celebrates commitment to protect the Great Barrier Reef
Go crazy about whales in a special family fun day at the museum
New generation trawler boats - tradition with a twist
Arvor releases new Sportsfish range
AIMEX focuses on commercial show in Asia
Further Australian growth for Stabicraft
Southport Yacht Club will host a free 'Discover Sailing Day'
Melbourne Boat Show earlier this year - 12 to 16 June
FinScan digital switching fitted to new rescue vessels
Kids' Zone a drawcard at Brisbane Tinnie & Tackle Show
Brisbane Tinnie & Tackle welcomes Engel as stage sponsor   
BIAV appoints new GM   
Jet stream gets fish in hot water   
Trash to Treasure - A seafood story   
Big waves shown to be energetically costly for fish   
Fisherman nabbed for illegal fishing at Point Lonsdale   
Maritime Alert - Dangerous conditions forecast for NSW boaters   
World Recreational Fishing Conference - First call for papers open   
12 weeks til Melbourne Boat Show   
First deadline for SCIBS exhibitors looms March 24   
Fishing for Culture - A celebration of fishing in culture   
Improving fish habitat by building a fishing line recycling bin +Video   
Greater numbers of catchable King George whiting in the years to come   
Paul Burt, boating guru, is the face of Sanctuary Cove Boat Show   
Marine Industry loses a loyal servant: Vale Gunter Bruckner   
Positive pass mark for new venue   
Couran Cove signs lease deal with Hope Island Marina   
Phones outpace PCs and TV as preferred device   
Researcher examines 'current leaks' that may change the way you sail   
Marine Auctions Runaway Bay - something for everybody!   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW FBW