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Alternative Reproductive Tactics In Lake Michigan Populations Of Invasive Round Goby (Neogobius Melanostomus): How Fish Increase Fitness By Doing Less, Alex Florian, Steve Smit
Alternative Reproductive Tactics In Lake Michigan Populations Of Invasive Round Goby (Neogobius Melanostomus): How Fish Increase Fitness By Doing Less, Alex Florian, Steve Smit
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Understanding the reproductive biology of invasive species is an important step in managing populations. Yet, little is known about the reproductive strategies of invasive round goby (Neogobius melanostomus) in Lake Michigan. For round goby, fertilization occurs externally in nests guarded by large “paternal” males. However, some males pursue alternative reproductive tactics (ARTs), where males sneak into a larger male’s nest and fertilize a portion of the eggs, these males are called “sneakers”. We investigated if the proportion of ARTs varies between sites and how that affects population dynamics of round goby. We caught 264 fish from 4 lakes along Eastern …