Daily Fishing and Outdoor Report
Monday, January 13, 2014: lookin’ good today but weather rollercoaster to continue tomorrow, rain-wise.
Temps will stay balmy compared to last week and should barely reach freezing at night for next 10 days. Again, wait until you see the warm batches arriving later in winter.
It remains a good time to carve ducks and fly ties, make that tie flies.
Here’s one Youtube look for starters: https://www.youtube.com/watch?v=IgGpTxo-Dds
By the by, tying flies isn’t just for fly fisherpeople. Regular anglers use the same techniques for teaser-tying or even spicing up treble hook on certain plugs, especially the likes of saltwater Zara spooks, which take very well to bucktails and such. For years I did well selling fly earnings for gals – without hooks, that is.
I’m not sure what this Facebook message is all about: Via Gibbs Lures:
Are you a fisherman looking to save or make a buck doing what you love??Have some good footage of a Gibbs Lure in action??? Contact me @ email@example.com for $$ or product!! Easy as that..
The following is an editorial, obviously stated from a commercial fishing point of view, but it touches on many points gerund to fishery management and even angling in general.
ISSF says sound fishery management should not be limited to reducing juvenile catches
SEAFOODNEWS.COM [SCOM] by Victor Restrepo, Christopher Zimmerman and Kristina Barz - January 13, 2013
Victor Restrepo serves as Chair of the ISSF Scientific Advisory Committee. Christopher Zimmermann and Kristina Barz are with Thünen Institute of Baltic Sea Fisheries
There is a widespread perception that catching juvenile, also known as immature, fish is a very bad thing. Several consumer and retailer guides assign a negative score to those fisheries that catch a non-trivial amount of juveniles – five percent, for example. The expectation that protecting juveniles will automatically result in increased sustainability is well entrenched in fisheries science and management as well. But this perception may not always be well founded.
Protecting juveniles is one of the many tools available in fisheries management. Like closed areas, vessel limits, and TACs (total allowable catch), size limits are one of many tools in the fishery management toolbox. The concept is anthropocentrically appealing and very easy to communicate, i.e. would you eat babies? Let every fish spawn at least once, the thinking goes, and the population’s continuity will be guaranteed forever, no matter what. But in fisheries management, like so many things in life, there is not one silver bullet solution to all issues.
We agree that, under some circumstances, protecting juveniles can make a lot of sense as a primary management tool. For example, if all we knew about the biology of a species was the age (size) at maturity, then letting the fish reproduce before becoming available to the fishery would guard against all the other things we didn’t know. But this is not the case for fish stocks that are regularly assessed and managed. We know a lot more about them, not only in terms of biological characteristics, but also whether the overall rate of exploitation is too high.
The fact is that a fish stock can become overfished by taking too many juveniles, by taking too many adults, or by taking too many of both. To put it another way, it is bad to catch too many of tomorrow’s spawners, but it is also bad to take too many of today’s spawners. In addition, bigger, older fish usually produce much more offspring than first-time spawners. A big cod of, for example, 1 m length produces about 600 times more eggs than a 40 cm female – although both are considered mature, just because of the much bigger body and thus bigger gonads. The same goes for tunas. There is also evidence that the survival rate of eggs spawned from older fish is higher than that from younger ones – fish might learn how to optimize the chances of their offspring. This would increase the contribution of big fish to the overall number of recruits even more. A good fishery management has to ensure the catch of the stock by allowing enough recruits to enter the spawning component of the population, including by ensuring that enough big spawners escape. The stock assessment models take into account all of the catches – juveniles and adults – and are used to define how much is enough. If the abundance of spawners is at a level that can produce Maximum Sustainable Yield, then the stock will safely avoid reaching a level that could endanger its continuity. In other words, it might be totally all right to “eat babies” if at the same time we can ensure a few big fish survive.
Importantly, targeting only the biggest fish can also have adverse effects on the stock. Such selective fishing favors smaller, earlier maturing fish within a population. After a number of generations, this can lead to a younger age at first maturity, as demonstrated e.g. in Barents Sea cod. The concept is known as “fisheries induced evolution” (Law & Grey 1989, Diekmann & Heino 2007, Jørgensen et al 2007). Because the number of spawners can remain constant while their contribution of recruits is reduced, earlier maturation masks the effect of overfishing on those stocks. At the same time, earlier maturation makes the stocks more vulnerable to environmental fluctuations because there is no buffer of experienced, highly productive females. This effect might not be reversible in the short term, even if the fishing pressure is reduced.
We would also like to explore another issue of concern to fisheries management that is often confused with that of juveniles. Specifically, the catch of individuals of a species when they are very small compared to the sizes that they could attain. For every fish population, there is a particular size where the difference between growth in biomass and losses from natural predation reaches a maximum point. Theoretically, the highest yields would occur when all the fish are caught at this optimum size. If they are caught when they are smaller, yields will be sub-optimal – this is known in fisheries science as growth overfishing. Unfortunately, the terms growth overfishing and abundance overfishing share one big word in common – overfishing – which may be one of the causes for the confusion. But they are not the same thing. Growth overfishing does not automatically result in overfishing of the stock’s spawning biomass; it relates more to economics and allocation than it does to biological sustainability.
Growth overfishing occurs with many yellowfin and bigeye tuna fisheries, especially with purse seining on floating objects and in pole-and-line fisheries. Reducing the catches of small yellowfin and bigeye in these fisheries, while increasing the catches in other fisheries that are more selective towards larger individuals (e.g. longlining), would result in higher long-term yields. When discussing this as part of a management strategy, it would be much more appropriate to use a term such as undesirably small tunas instead of juvenile tunas so as to not confuse the two issues.
In short, for managed stocks, it is not very useful to focus on avoiding the catch of juvenile individuals as the only thing that matters. It is much more useful to clearly articulate management objectives, including allocation between fisheries; to define limit and target reference points, and to use robust harvest control rules to drive sustainability.
Check this out. Quite artistically cool with a fishing flair: https://www.facebook.com/michael.morton.969/media_set?set=a.1304796...
The survivors gathered at the United Nations in New York on Monday to tell the world that their attackers, like the great white, desperately need protecting. Paul, whose right hand and lower right leg were torn off last year in Sydney Harbour, says he wants to "speak out for an animal that can't speak for itself."
Rampant overfishing is driving some species to the brink of extinction, with 73 million sharks killed annually just to feed Asia's demand for shark fin soup. "We're decimating the population of sharks just for a bowl of soup," Paul says.
The Pew Environment Group, a Washington-based NGO that brought the survivors to the UN, says 30 per cent of shark species are threatened or near-threatened with extinction, while the status of 47 per cent is not properly known.
Scientists say that wiping out sharks, which are at the top of the ocean food chain, is creating a destructive ripple effect throughout marine ecosystems.
For example, sharks eat seabirds, so that a reduction in shark numbers leads to more seabirds, who then eat up the bait fish needed by tuna, another endangered big fish. Another example is the gradual collapse of life on coral reefs once the primary predator is removed from the balance. "The ramifications on the ocean ecosystem are vast," says Matt Rand, director of shark conservation at Pew.
Read our feature "Ten myths about sharks"
|Australia starts surveillance overflights of Sea Shepherd's antics as whaling battle resumes|
SEAFOODNEWS.COM [Canberra Times] By Andrew Darby - January 13, 2014 -
The federal government has begun whaling patrol flights, circling conservation group Sea Shepherd's ship in the Southern Ocean as skirmishing begins with Japanese whalers.
The flights by a long-range Airbus A319 are intended to monitor movements of the whaling fleet if it is hunting off Antarctica in Australia's search and rescue zone.
Sea Shepherd captain Peter Hammarstedt said the aircraft circled his ship, the Bob Barker, for about eight minutes on Sunday morning and came close enough to be clearly identified. No contact was made. "When any whaling monitoring mission has been completed, we will provide a public report," a spokesman for Environment Minister Greg Hunt said.
The flight came after the first clash of this year, which resulted in a diplomatic protest to the Netherlands, flag state of the Sea Shepherd ship, the Steve Irwin. Its skipper, Siddarth Chakravarty, said he deployed two small boats whose crew used lines in a bid to slow down the whalers' security ship, Shonan Maru No.2, which is tailing the Steve Irwin. "When this was met with aggression from the crew of the Shonan Maru No.2, in terms of throwing grappling hooks at the small boats and hitting two of the crew members, as well as attempts to jab the crew with long poles, I retrieved the small boats," Mr Chakravarty said.
Images on the Fisheries Agency of Japan website showed a Sea Shepherd fast boat passing close across the bow of a Japanese ship.
Japan's consul-general in Melbourne, Hidenobu Sobashima, said the obstructive actions of Sea Shepherd endangered life and property of the whaling fleet. "Japan protested to the government of the Netherlands as the flag state of the Steve Irwin, through the embassy in Tokyo," Mr Sobashima said. "It requested that the government of the Netherlands take appropriate action to prevent these activities.