Lake and Aquatic Sciences (CGLAS)
What is the best method for control of the invasive Round Goby?
|Earth systems, chemistry, geology, aquatic ecology and biology, environmental issues, problem solving and decision-making skills, research skills, non-indigenous species|
|This activity satisfies portions of the
following National Science Education Standards for Life Science in grades
9th through 12th. Additional information about the NSES can be found
at the following web address: http://www.nap.edu/html/nses/
The Interdependence of Organisms
Earth and Space Sciences:
Grade 11 Earth Systems
Grade 11 Diversity and
Interdependence of Life
Grade 12 Diversity and
Interdependence of Life
Grade 9 Abilities to
Do Technological Design
Grade 11 Understanding
Grade 10 Doing
Grade 11 doing
Ways of Knowing:
Grade 11 Science and
Grade 12 Science and
Earth Systems Understandings
|#2 -- Human activities, collective and
individual, conscious and inadvertent, affect planet Earth
#3 -- The development of scientific thinking and technology increases our ability to understand and utilize Earth and space
#4 -- The Earth system is composed of interacting subsystems of water, rock, ice, air and life
#7 -- There are many people with careers that involve study of Earth’s origin, processes and evolution.
Length of Activity
|2 weeks, including both in-class and out of class work time|
|Computer access, Internet connection, podium|
Prior Knowledge Needed
|Familiarity with the Internet; basic understanding of ecology and earth systems; ability to speak in front of the class|
|At the end of this activity
students should be able to
|The data set for this activity consists
of various websites with Internet links to resources focusing on the round
goby, its life history, and current methods of control. These
resources are listed near the end of this document under the heading “Web
One important point to mention to your students is that not as much is known about the round goby as there is about zebra mussels and other exotic species; therefore, they may have to develop their own ideas about how to control the goby. Encourage creativity in their ideas and arguments.
If your class will not have access to computers while completing the activity, print out student worksheets and supply students with background information (see references and resources section, Background page, Round Goby Fact Sheet, and other information from web pages about round gobies: Exotic Aquatics on the Move, Great Lakes Information Network, Invasivespecies.gov)
The Adobe Acrobat reader (for
opening .pdf files) can be downloaded (free) at http://www.adobe.com/products/acrobat/readstep2.html
|Round gobies are a relatively new invasive
species to the Great Lakes region. While other exotic species such
as the alewife and the lamprey have existed in the Great Lakes system for
decades, the round goby was first discovered in the St. Clair River in
1990. Because of its ability to adapt and reproduce quickly, effective
control methods for this species are scarce. Currently, only a few
control measures are in use. These include imposing restrictions
on ballast water dumping, limiting the gobies’ access to new waterways,
and the use of piscicides (fish toxins). However, most of these methods
are used to manage the spread of the goby in local waters, not to eradicate
the fish that are already there.
The purpose of this activity is to introduce
students to the exotic species, the round goby, and the threat that it
poses the ecosystem that it invades. Within this activity, students
will play the roles of groups of stakeholders deciding the best way of
controlling the round goby in their region. Students will gain valuable
skills in doing research while learning about the impact that various methods
of control of the round goby have on the ecosystem and region as well as
the impact of the gobies themselves. This activity includes class
discussion and requires a high level of student participation.
|Visit the Background
page in preparation for the activity. It may also be downloaded in pdf
format for students.
The Adobe Acrobat reader (for opening .pdf files) can be downloaded (free) at http://www.adobe.com/products/acrobat/readstep2.html
|This activity runs in a debate format.
* What is the difference between an exotic and an invasive species?
An exotic species is a species that lives in an area where it is not native. An invasive species is usually an exotic species that threatens the rapid and/or widespread displacement of a native species. A species can be exotic without being invasive.
* Can the students think
of any exotic species near their home?
* Why might an exotic
species be bad?
* Can an exotic species
|Discuss with students about what they
feel was the best control method out of all presented. Why do they
feel that way? How did they feel about your choice for control?
What do they think about the round goby’s impact on the systems within
the environment? The control method’s impact?
Ensure that students understand that the
systems within the environment are interlinked and dependent upon one another.
When humans change or influence one system (e.g. introducing a new species,
or applying a fish toxin to eradicate a species), the other systems are
also affected in some way. Sometimes there is a positive change;
sometimes there is a negative change. However, we need to be aware
of how human actions influence the other systems on earth and what consequences
we may reap from them.
|Each student creates a concept
map depicting the round goby's relationship to parts of the lake environment
and to humans. The map should contain at least one control method with
its consequences indicated.
Student participation should be counted
as a large part of the assessment. Here is suggested rubric
for grading this assignment.
|Based on what they know of the round goby's impact on the Great Lakes ecosystem until now, students can develop a television soap opera or a fishing report about the lakes in the year 2020. Encourage them to consider a best-case and worst-case scenario for goby distribution and impact.|
References and Resources
Web ResourcesInvasive Species: Round Goby Profile
A gateway to federal and state invasive species activities and programs
Round Goby on the Exotic Aquatics on the Move Page
Ohio Sea Grant Fact Sheets
Sea Grant Non-Indigenous Species Sites
Additional ResourcesCharlebois, P.M., L.D. Corkum, D.J. Jude, & C. Knight. (2001). The Round Goby (Neogobius melanostomus) Invasion: Current Research and Future Needs. Journal of Great Lakes Research, 27(3): 263-6.
Charlebois, P.M., J.E. Marsden, R.G. Goettel, R.K. Wolfe, D.J. Jude, & S. Rudnika. (1997). The round goby, Neogobius melanostomus (Pallas), a review of European and North American Literature. Illinois-Indiana Sea Grant Program and Illinois Natural History Survey. INHS Special Publication NO. 20. 76pp.
Denlinger, L. (2000). Can Smallmouth Bass Weather the Storm? Twine Line, 22(5): 1, 4.
Djuricich, P. & J. Janssen. (2001). Impact of Round Goby Predation on Zebra Mussel Size Distribution at Calumet Harbor, Lake Michigan. Journal of Great Lakes Research, 27(3): 312-8.
Dubs, D.O.L. & L.D. Corkum. (1996). Behavioral Interactions Between Round Gobies (Neogobius melanostomus) and Mottled Sculpins (Cottus bairdi). Journal of Great Lakes Research, 22(4): 838-44.
French III, J.R.P. & D.J. Jude. (2001). Diets and Diet Overlap of Nonindigenous Gobies and Small Benthic Native Fishes Co-inhabiting the St. Clair River, Michigan. Journal of Great Lakes Research, 27(3): 300-11.
Jude, D.J. (1997). Round Gobies: Cyberfish of the Third Millennium. Great Lakes Research Review, 3(1): 27-34.
Jude, D.J., J. Janssen & G. Crawford. (1995). Ecology, distribution, and impact of the newly introduced round tubenose gobies on the biota of the St. Clair and Detroit Rivers. In The Lake Huron Ecosystem: Ecology, Fisheries and Management, M. Munawar, T. Edsall & J. Leach, ed. Amsterdam, The Netherlands: SPB Academic Publishing bv. p. 447-60.
Kavanaugh, M. (2002, Jan. 20). Round goby suspected in Lake Erie botulism outbreak. The Plain Dealer. In Cleveland.com, [Online]. Available: http://www.seagrant.sunysb.edu/botulism/media/CPD-Botulism012002.htm (November 2002).
Kuhns, L.A. & M.B. Berg. (1999). Benthic Invertebrate Community Responses to Round Goby (Neogobius melanstomus) and Zebra Mussel (Dreissena polymorpha) Invasion in Southern Lake Michigan. Journal of Great Lakes Research, 25(4): 910-7.
Marsden, J.E. & D.J. Jude. (1995). Round gobies invade North America. Indiana-Illinois Sea Grant Publication No. IL-IN-SG-95-10.
Niimi, A.J. (2000). Role of Vessel Transit Patterns on Exotic Species Introductions to the Great Lakes. Dreissena!, 11(1): 1-10.
Ray, W.J. & L.D. Corkum. (2001). Habitat and Site Affinity of the
Round Goby. Journal of Great Lakes Research, 27(3): 329-34.
Simonovic, P., M. Paunovic, & S. Popovic. (2001). Morphology, Feeding, and Reproduction of the Round Goby, Neogobius melanostomus (Pallas), in the Danube River Basin, Yugoslavia. Journal of Great Lakes Research, 27(3): 281-9.
Skora, K.E. & J. Rzeznik. (2001). Observations on Diet Composition of Neogobius melanostomus Pallas 1811 (Gobiidae, Pisces) in the Gulf of Gdansk (Baltic Sea). Journal of Great Lakes Research, 27(3): 290-9.
Wickett, R.G. & L.D. Corkum. (1998). Nest defense by
the non-indigenous fish, the Round Goby, Neogobius melanostomus (Gobiidae),
on a shipwreck in western Lake Erie. Canadian Field-Naturalist, 112(4):
|Jennifer Dudley, MS, The Ohio
State University School of Natural Resources, 2003
Web assistance by Rosanne Fortner, Project Director
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Making Activities for the Great Lakes, Round Goby Control lesson
Developed by the Ohio Sea Grant Education Program, The Ohio State University. © 2003