Navigation Links
Releasing fish for the future

NSW Department of Primary Industries (DPI) fisheries scientists are investigating ways to boost the survival rates of fish caught and then released by anglers.

Some guidelines designed to improve fish survival were recently developed for released line-caught snapper, silver trevally, mulloway, sand whiting, yellowfin bream and dusky flathead.

The research, costing more than $1.5 million and funded by NSW DPI and the Recreational Fishing Trust (using money from licence fees), is developing protocols designed to maximise fish survival via subtle changes to management practices.

Owing to bag limits, legal sizes and non-consumptive angling, between 30 and 50% of the total recreational catch is released each year in Australia. This amounts to more than 47 million fish being caught and released annually.

New research is now seeking to maximise the post-release survival of other commonly-caught species including luderick, sand mullet, garfish, tailor, Australian bass, Murray cod and golden perch.

NSW DPI scientists Matt Broadhurst and Paul Butcher have shown that mortality rates can be significantly improved through changed practices.

Key recommendations from an initial two-year project are that fishers should

  • Cut the line on fish that swallow hooks

  • Remove hooks caught in the fish’s mouth
  • Minimise air exposure
  • Use landing nets without knotted mesh
  • Maintain water quality in on-boat holding tanks, and
  • Use the right rig for the fish species being targeting.
  • Dr Broadhurst said some of these actions were found to massively boost fish survival.

“Simply cutting the line rather than attempting to remove hooks swallowed by mulloway and yellowfin bream increased their survival from 12 percent to more than 85 percent.

“Up to 76 percent of the released line-cut, gut-hooked yellowfin bream then shed their hooks over an average of three weeks”, he said.


'"/>

Source:New South Wales Department of Primary Industries


Related biology news :

1. HIV vaccine trial breaks ground for future research
2. Prozac for future Plants on Mars
3. Purdues gold nanorods brighten future for medical imaging
4. Plants reveal a secret and bring researchers nearer a cleaner future
5. Report focuses on challenges to unlocking future promise of vaccines
6. Researchers make long DNA wires for future medical and electronic devices
7. New U. of Colorado at Boulder flu chip may help combat future epidemics, pandemics
8. Understanding the oceans microbes is key to the Earths future
9. Tastier tomatoes in the future?
10. Stable polymer nanotubes may have a biotech future
11. Food-crop yields in future greenhouse-gas conditions lower than expected

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/28/2016)... First quarter 2016:   , ... the first quarter of 2015 The gross margin was ... 18.8) and the operating margin was 40% (-13) Earnings ... flow from operations was SEK 249.9 M (21.2) , ... SEK 7,000-8,500 M. The operating margin for 2016 is ...
(Date:4/15/2016)... , April 15, 2016 ... "Global Gait Biometrics Market 2016-2020,"  report to their ... ) , ,The global gait biometrics market ... 13.98% during the period 2016-2020. Gait ... which can be used to compute factors that ...
(Date:3/29/2016)... LegacyXChange, Inc. (OTC: LEGX ... Protect are pleased to announce our successful effort to ... of writing instruments, ensuring athletes signatures against counterfeiting and ... athletes on LegacyXChange will be assured of ongoing proof ... Bill Bollander , CEO states, "By inserting ...
Breaking Biology News(10 mins):
(Date:5/3/2016)... , May 3, 2016  Dr. Thomas P. ... in The Woodlands, Texas , now ... percent of treated fat cells in just 25-minutes, leaving ... to 90 percent of Americans report feeling bothered by ... fat reduction procedures are a growing industry. This innovative ...
(Date:5/2/2016)... ... May 02, 2016 , ... ... clients in mind, the fresh look and added functionality give the agricultural world ... have seen a dynamic shift in agriculture – from precision farming via satellites ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... medicine, is excited to announce the launch of the Proove Health Foundation ... volunteerism, and education to promote the use of personalized medicine for tackling the ...
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... Summit for ... to support the development of a patient-specific stem cell therapy for the treatment of ... lab of Dr. Jeanne Loring at The Scripps Research Institute in San Diego, CA. ...
Breaking Biology Technology: