1.0 The Pike Resource
1.1 THE PIKE
Pike or Northern Pike, scientific name Esox lucius is a
streamlined Predatory freshwater fish whose origin can be dated back
thirty million years from fossil evidence. Pike can be found in most
of Irelands rivers and lakes living in harmony with other species as
an important part of the freshwater ecosystem. The pikes physical
characteristics have changed little through the ages and their
efficient design has helped them survive the events that rendered
the dinosaurs and many other prehistoric species extinct. These
characteristics include green and yellow body markings to disguise
the Pike the weeds, streamlined body together with dorsal and anal
fins set back near the tail to give maximum power to shoot after its
prey, eyes set forward in the head to give a degree of binocular
vision helping to judge distance more accurately and powerful jaws
coupled with sharp teeth pointed back in the mouth to prevent prey
from escaping its grip.
The maximum life span of Pike is around 15 years and the official
Irish rod caught record is 42 lb. The largest Pike recorded in
Ireland was 90 ½ lb. in weight and 5'-6" long in 1862, however no
reliable authentication exists. The larger fish are females or 'Hen'
fish and the smaller males typically reach a maximum weight of 10
lb. Pike are a relatively fast growing species and a typical 20 lb.
fish could be as young as six years old. Pike are lone opportunistic
hunters and are not territorial they often share hunting grounds
with other similar size Pike. As a preference, Pike will feed on
excess in the young Pike population plus the weak and deceased of
other species to reduce the hunting effort thus helping to maintain
a perfect balance in the ecosystem. Mature Pike tend to lie in the
deeper holes in a fishery and normally only move to open water
engage in hunting. The clear alkaline waters of limestone lakes and
connecting rivers produce the larger fish while more acid colored or
boggy waters tend to produce smaller fish. Irish Pike normally spawn
between February and April depending on water temperature, and move
into shallow grassy or weedy bays to lay their eggs. Males accompany
the females to fertilise the eggs and many themselves become a meal
for the ravenous females when the spawning process is completed.
1.1
1.2 HISTORY OF PIKE IN IRELAND
The research by Frank Barbe and Shane Garrett titled "The Pike in
Ireland: A (Necessary) Review" casts indisputable doubt on the
introduction theory currently used as a reason for
culling/transferring pike on some Irish waters. This research, which
took over a year to compile is comprehensive and fully supports the
wish of Irish Pike Anglers that the pike species is now assigned the
status of "indigenous species". A copy of the research is
included in the appendix.
1.2
1.3 GEOGRAPHICAL SPREAD OF PIKE IN IRELAND
Pike are present in lakes and rivers in almost all counties in
Ireland where suitable waters are present. The only areas where
there are no pike are the extreme northwest, west and
southwest.
1.3
1.4 CURRENT STATUS OF PIKE STOCKS
We are
convinced that pike stocks have decreased dramatically over the last
30 years. We are particularly concerned over the sharp decline in
specimen-sized pike. In the few areas where there may be good stocks
pike are small and this may be as a result of the lack of larger
pike to prey on them.
1.4
1.5 BIOLOGY OF PIKE STOCKS
The extract below is taken from an article by Dr Bruno Broughton
on the scientific basis for pike culls. Further information is
available on www.pacgb.com.
General Comments On Management Principles: There are a
wide variety of physical, chemical and biological factors, which
influence fish populations in exploited fisheries.
Where
both predators and prey are present, factors which increase fish
numbers include:- · immigration · natural recruitment
(successful spawning) · stocking, be it planned, accidental or
illegal.
Factors which decrease fish numbers include:- ·
emigration · pollution · disease and parasitism ·
'natural' mortalities · predation - by the same species, other
fish or other animals · removals, either deliberate
(cropping/culling) or theft · angling, through deliberate or
accidental actions.
In assessing the reason(s) for changes in
the status or composition of fish populations it is important that
each of these factors is considered. All too often, those charged
with managing fisheries draw cause-and-effect conclusions based on
prejudice, hearsay or inadequate data. Historically, the persecution
of pike in British fisheries was a case in point, based on the
fallacious notion that if left to their own devices, the pike would
eat all of the other species to extinction. With improved
knowledge and its wider dissemination to anglers, attitudes have
changed rapidly in the last few decades. It is fair to state that
the far greater protection afforded to pike has not been accompanied
by a decline in the quality of fishing for non-pike species. Were
this not the case, there would undoubtedly be a substantial
groundswell of angling opinion in favour of rescinding pike
conservation measures and resuming widespread pike culls... which
there is not. Scientists and anglers in many other countries,
notably in some other western European nations and in North America,
share this more enlightened attitude to pike.
1.5
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