| Abstract: | We examined the hypothesis that competition for food between rainbow smelt (Osmerus mordax) and larval lake herring (Coregonus artedi) was a cause for the declines of lake herring stocks in Lake Superior. We studied the diet of larval lake herring and of larval, juvenile, and adult rainbow smelt during 1974 in Black Bay, Ontario, where both species were abundant, and in the Apostle Islands Region, Wisconsin, where rainbow smelt was abundant but lake herring was scarce. No evidence of competition for food was found between larval lake herring and rainbow smelt. Spawning and hatching times of the two species were separate enough that most larvae of the two species did not occupy the study areas simultaneously. Juvenile and adult rainbow smelt were found with lake herring larvae, but their diets differed. Therefore, we concluded that rainbow smelt did not compete with lake herring larvae for food and that competition for food between rainbow smelt and lake herring larvae was not the factor that caused lake herring population declines in Lake Superior. |
| Genre: | Federal Government Series |
| ProdID: | 2000062 |
| Citation Author: | Selgeby, James H.; MacCallum, Wayne R.; Hoff, Michael H. |
| Citation Contributing Office: | Great Lakes Science Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 9 |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 9 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | 9 p. |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Fish and Wildlife Service |
| Citation Series: | Biological Report |
| Citation Series Code: | BR |
| Citation Series Number: | 25 |
| Citation Search Results Text: | Rainbow smelt - larval lake herring interactions: competitors or casual acquaintances?; 1994; Federal Government Series; BR; 25; Selgeby, James H.; MacCallum, Wayne R.; Hoff, Michael H. |
| Citation Start Page: | 0 |
| Citation Volume: | |
| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | Rainbow smelt - larval lake herring interactions: competitors or casual acquaintances?; 1994; Federal Government Series; BR; 25; Selgeby, James H.; MacCallum, Wayne R.; Hoff, Michael H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=ADA322971 |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Fish and Wildlife Service |
