| Title | Use of Tethered Prey for Estimating the Impact of the Invasive European Green Crab |
| Publication Type | Thesis |
| Year of Publication | 2000 |
| Authors | Hauck, Laura L. |
| Academic Department | Dept. of Biology |
| Degree | B.S. |
| Pagination | 49 p. |
| University | Oregon State University |
| City | Corvallis, Or. |
| Type of Work | Bachelors Thesis |
| Call Number | OSU Libraries: Internet Resources QL444.M33 H383 2000 , Guin QL444.M33 H383 2000 , Digital Open Access |
| Keywords | Charleston Bridge, Coos Bay, Coquille Point, Dungeness crab = Metacarcinus magister (Cancer magister), European green crab = Carcinus maenas, feeding behavior, Fossil Point, Hatfield Marine Science Center, Idaho Point, invasive species, Jordan Cove, McLean Point, Oregon shore crab = Hemigrapsus oregonensis, Pigeon Point, Pony Point, population count, predation, Purple shore crab = Hemigrapsus nudus, Red rock crab = Cancer productus, Sawyer’s Landing, Sitka periwinkle = Littorina sitkana, Striped shore crab = Pachygrapsus crassipes, Yaquina Bay |
| Notes | Feeding methods can be hallmarks of different species. Crabs, for example, eat snails, but different crabs take different approaches for getting snail meat. The Dungeness crab uses its powerful claws to crush its prey, while the invasive European green crab was most likely to pull its prey from the shell. In this study, snails were epoxied to monofilament lines that were placed in various sampling sites around Coos and Yaquina bays. When the lines were pulled up, the fate of the snails was determined and scored according to the method of predation. The study showed a high (65-68%) rate of predation on gastropods at Yaquina Bay sites by the European green crab, which the author calls, “a red flag that should alert us to the potential impact of this voracious predator on native mollusks.” (p.46) Senior thesis for the Bachelor of Science in the Department of Biology, Oregon State University, Corvallis, Oregon. |
| URL | https://ir.library.oregonstate.edu/concern/defaults/12579t005 |
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