Dissertation/Thesis Abstract

Predation on centrarchid nests in the St. Lawrence River following introduction of the round goby (Neogobius melanostomus)
by Killourhy, Christina, M.S., State University of New York College of Environmental Science and Forestry, 2013, 53; 1540942
Abstract (Summary)

The widespread introduction of round goby (Neogobius melanostomus ) throughout the Great Lakes basin has raised concerns regarding increased risk of egg predation on nesting fish species. Five-minute observation trials were conducted to determine the identity and number of nest predators on rock bass (Ambloplites rupestris), pumpkinseed (Lepomis gibbosus), and smallmouth bass (Micropterus dolomieu) nests following removal of the guarding male. Rock bass had a greater proportion of nests invaded (85.4 %) and average number of predators per nest (9.32, SE 1.7) than pumpkinseed (45.0%, 1.83, SE 0.64) in 2011. Similarly, rock bass had a greater proportion of nests invaded (52.5%) and average number of predators per nest (5.3, SE 1.7) than pumpkinseed (35.0%, 2.3, SE 1.1) and smallmouth bass (37.5%, 2.7, SE 0.94) in 2012. Principal components analysis and canonical correspondence analysis of habitat variables indicates some species are more vulnerable to nest predation due to preferred spawning habitat.

Indexing (document details)
Advisor: Farrell, John M.
Commitee: Daley, Douglas, Kapuscinski, Kevin L., Underwood, H. Brian
School: State University of New York College of Environmental Science and Forestry
Department: Environmental and Forest Biology
School Location: United States -- New York
Source: MAI 52/01M(E), Masters Abstracts International
Source Type: DISSERTATION
Subjects: Ecology, Zoology, Aquatic sciences
Keywords: Egg predation, Habitat, Neogobius melanostomus, Pumpkinseed, Rock bass, Round goby, Smallmouth bass
Publication Number: 1540942
ISBN: 9781303220630
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