Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search


Hake Fishery Prospects Improve?

Tuesday June 22

Hake Fishery Prospects Improve?

Fisheries researchers have detected record numbers of young hake in their annual multi-species fish abundance survey on the Chatham Rise.

Scientists from the National Institute of Water & Atmospheric Research (NIWA) have just completed work establishing the age of hake from the most recent summer’s survey. The survey was commissioned by the Ministry of Fisheries, through levies paid by the fishing industry.

“We have picked up many more two year olds than we have ever seen before, which is an exciting development,” says NIWA project leader, Dr. Mary Livingston.

“We haven’t seen such young hake at all since 1994, and the numbers suggest there may be more juvenile hake on the Chatham Rise now than in any year since the surveys began in 1992.”

“It appears to be good news for the hake fishery, which has been in decline on the Chatham Rise. To be sure of this, however, we will need to see strong numbers of three year olds next year and of four year olds the year after.”

“A single good year may not lead to dramatic increases in the amount of hake available to the commercial fishery. The positive thing is that we can use the ongoing surveys to monitor how much difference this apparent increase in young hake makes to the fishery.”

“I am cautiously optimistic about the hake. I really hope we see more of the young fish, and that hake recruitment does improve. But if it doesn’t, we definitely need to know about it, so that the best possible advice can be used to help set catch levels.”

“The numbers of young fish are likely to be affected by a complex interaction of factors. These include the population of breeding adults, the type and availability of food, the presence of predators, ocean currents, sea temperatures, and commercial fishing. It's important to collect fisheries data consistently and regularly, as we do in this Chatham Rise survey, in order to understand these factors and to assess the state of our fish stocks accurately." For more information, contact:

Dr Mary Livingston Michele Hollis NIWA Scientist, middle depth fisheries NIWA Science Communications 04 386 0873 04 386 0483 025 618 7533 027 255 2500 BACKGROUND

About the Chatham Rise Survey

Ongoing support for the Chatham Rise fish abundance surveys by the fishing industry, the Ministry of Fisheries, and researchers alike has resulted in New Zealand’s best offshore time series.

Fish stocks are surveyed each year at about 100 different locations on the Chatham Rise, chosen by stratified random selection.

Data are collected on all QMS (Quota Management System) species sampled by the survey, especially hoki, hake and ling, as well as other species such as rattails and javelin fish which are not part of the QMS system, but still form a significant part of the fish community. There are now 13 consecutive years of data from this Chatham Rise survey which means NIWA can evaluate trends not only in fish abundance and recruitment, but changes to fish communities that can occur as a result of changes in fishing activity and environmental trends.

The surveys also provide invaluable data on broader aspects of the marine ecosystem.

The surveys are funded by the Ministry of Fisheries, through levies paid by the fishing industry.

About Hake (Merluccius australis)

A moist, white-fleshed fish. Believed to be rather slow-growing: hake on the Chatham Rise start spawning at age 7-8 years. Average size: 70-100 cm, reaching about 130 cm. Colour: silvery grey above paling to white below. Voracious predators: feed on medium sized fishes and squid.


© Scoop Media

Business Headlines | Sci-Tech Headlines


I Sing The Highway Electric: Charge Net NZ To Connect New Zealand

BMW is turning Middle Earth electric after today announcing a substantial contribution to the charging network Charge Net NZ. This landmark partnership will enable Kiwis to drive their electric vehicles (EVs) right across New Zealand through the installation of a fast charging highway stretching from Kaitaia to Invercargill. More>>


Watch This Space: Mahia Rocket Lab Launch Site Officially Opened

Economic Development Minster Steven Joyce today opened New Zealand’s first orbital launch site, Rocket Lab Launch Complex 1, on the Mahia Peninsula on the North Island’s east coast. More>>


Marketing Rocks!
Ig Nobel Award Winners Assess The Personality Of Rocks

A Massey University marketing lecturer has received the 2016 Ig Nobel Prize for economics for a research project that asked university students to describe the “brand personalities” of three rocks. More>>


Nurofen Promotion: Reckitt Benckiser To Plead Guilty To Misleading Ads

Reckitt Benckiser (New Zealand) intends to plead guilty to charges of misleading consumers over the way it promoted a range of Nurofen products, the Commerce Commission says. More>>


Half A Billion Accounts, Including Xtra: Yahoo Confirms Huge Data Breach

The account information may have included names, email addresses, telephone numbers, dates of birth, hashed passwords (the vast majority with bcrypt) and, in some cases, encrypted or unencrypted security questions and answers. More>>


Rural Branches: Westpac To Close 19 Branches, ANZ Looks At 7

Westpac confirms it will close nineteen branches across the country; ANZ closes its Ngaruawahia branch and is consulting on plans to close six more branches; The bank workers union says many of its members are nervous about their futures and asking ... More>>

Interest Rates: RBNZ's Wheeler Keeps OCR At 2%

Reserve Bank governor Graeme Wheeler kept the official cash rate at 2 percent and said more easing will be needed to get inflation back within the target band. More>>


Get More From Scoop

Search Scoop  
Powered by Vodafone
NZ independent news