Go order Pond Boss Magazine – now !!!!!
This post has 1 goal – to get you to think about subscribing to Pond Boss, if you don't already.
It has 2 firsts!
One, a request that you support the Forum by subscribing to Pond Boss Magazine. Click here:
http://www.pondboss.com/subscribeSecond I am jumping the gun on a topic that is upcoming soon in PB Mag in May by giving you a peak at the topic. I guarantee it is a topic that will interest you about your fishery. I've reviewed the literature, and summarized some interesting information
Take a look and let’s see what you think. FYI it is equally about most fish species, not just LMB which were the test species. There is a lot here and a lot more to consider.
Can Largemouth Bass Transplanted from an Unexploited
Population Genetically Contribute to an Active Fishery? A Test
Case for Genetic Management of Exploited Fish Populations
North American Journal of Fisheries Management 37:271–283, 2017
© American Fisheries Society 2017 - Jan-Michael Hessenauer, Jason Vokoun, Amy Welsh, Justin Davis, Robert Jacobs & Eileen O’ Donnell
Recreational fishing is one of the most popular outdoor activities in the world, resulting in substantial effects on
recreational fish stocks. Recent studies have found that recreational angling may drive fisheries-induced evolution,
resulting in changes in the size, behavior, and physiology of exploited recreational stocks.
Recent studies have attributed differences in size, behavior, and physiology of fish species to the evolutionary impacts of recreational angling (Uusi-Heikkilä et al. 2008; Matsumura et al. 2011; Alós et al. 2014a, 2014b; Hessenauer et al. 2015). For example, a modeling study found that recreational fishing may deplete high-activity phenotypes because highly active fish are more likely to be encountered and captured by recreational anglers (Alós et al. 2012).
Philipp et al. (2009) demonstrated that vulnerability to recreational angling is a heritable trait (heritability h2 = 0.15) by conducting multigeneration artificial selection on Largemouth Bass based on the number of times individuals were captured by experimental angling. Further studies on the lines developed by Philipp et al. (2009) revealed that selection from recreational angling acts on a suite of behavioral (Cooke et al. 2007; Nannini et al. 2011; Sutter et al. 2012), physiological (Cooke et al. 2007; Redpath et al. 2010), and reproductive (Cooke et al. 2007; Sutter et al. 2012) traits. Individuals that were bred for high angling vulnerability had higher metabolic rates (Redpath et al. 2010) and higher reproductive success (Sutter et al. 2012).
We explored the potential to genetically manage exploited fisheries by introducing individuals from unexploited populations as a means to mitigate selection from recreational angling.
Decreases in population-wide vulnerability to angling represent a challenge faced by recreational fishery managers who seek to maintain high angler catch rates and attendant angler satisfaction, among other objectives. Because selection reduces angling vulnerability but does not necessarily reduce fish density, declines in traditional indices such as angling CPUE may not reliably predict changes in population abundance (Askey et al. 2006; Klefoth et al. 2013). Selection from
angling is also correlated with fish energetics (Redpath et al. 2010; Hessenauer et al. 2015); therefore, selection for reduced vulnerability may have ecosystem-level consequences.
Second study
Loss of Naivety to Angling at Different Rates in Fished and
Unfished Populations of Largemouth Bass
Transactions of the American Fisheries Society 145:1068–1076, 2016© American Fisheries Society 2016 , Jan-Michael Hessenauer*1 and Jason Vokoun Justin Davis, Robert Jacobs, and Eileen O’Donnell
Read about these studies in the May-June issue of Pond Boss.