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DOI | 10.1674/0003-0031-181.1.123 |
Characteristics of a Naturalized Kokanee Salmon Oncorhynchus nerka Population in Atypical Habitat | |
Lyons, John1,4; Seibel, David A.2; Walchak, Daniel L.1; Haglund, Justin M.3; Nolan, Aaron F.1; Kanehl, Paul D.1 | |
发表日期 | 2019 |
ISSN | 0003-0031 |
EISSN | 1938-4238 |
卷号 | 181期号:1页码:123-132 |
英文摘要 | Kokanee salmon arc a dwarf freshwater form of the anadromous sockeye salmon (Oncorhynchus nerka) native to the Pacific coast of North America and Asia and widely introduced in western North America as a sport and prey fish. Few kokanee salmon introductions have succeeded in eastern North America. A naturalized population of kokanee salmon has persisted for over 50 yr in Florence Lake, Wisconsin, an unlikely location given its relatively small size (21.4 ha), shallow maximum depth (7.6 m), low elevation (381 m), and southerly latitude (45.12 degrees N). Kokanee salmon completed their entire life cycle within the lake and rarely entered an accessible coldwater inlet stream. Spawning occurred during late October and early November along the lake shoreline. Spawning redds with defending males were observed in 1-2 m of water on sand/gravel/cobble substrate. Kokanee salmon growth in the lake was relatively rapid, and fish had a mean total length of 117 mm after their first growing season (age 0+), 212 mm after their second (age 1+), begin to mature and spawn after their third (age 2+) at 317 nun for females and 324 mm for males, and were at 344 mm for females and 354 mm for males after their fourth (age 3+). Few fish reproduced at age 4+. Despite limited oxy-thermal habitat during summer, kokanee salmon appear to thrive in Florence Lake, perhaps because of cold inflows from the inlet and springs within the lake. |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
来源期刊 | AMERICAN MIDLAND NATURALIST |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/91386 |
作者单位 | 1.Wisconsin Dept Nat Resources, 2801 Progress Rd, Madison, WI 53718 USA; 2.Wisconsin Dept Nat Resources, 223 East Steinfest Rd, Antigo, WI 54409 USA; 3.Wisconsin Dept Nat Resources, 1500 North Johns St, Dodgeville, WI 53533 USA; 4.Univ Wisconsin, Zool Museum, 250 North Mills St, Madison, WI 53706 USA |
推荐引用方式 GB/T 7714 | Lyons, John,Seibel, David A.,Walchak, Daniel L.,et al. Characteristics of a Naturalized Kokanee Salmon Oncorhynchus nerka Population in Atypical Habitat[J],2019,181(1):123-132. |
APA | Lyons, John,Seibel, David A.,Walchak, Daniel L.,Haglund, Justin M.,Nolan, Aaron F.,&Kanehl, Paul D..(2019).Characteristics of a Naturalized Kokanee Salmon Oncorhynchus nerka Population in Atypical Habitat.AMERICAN MIDLAND NATURALIST,181(1),123-132. |
MLA | Lyons, John,et al."Characteristics of a Naturalized Kokanee Salmon Oncorhynchus nerka Population in Atypical Habitat".AMERICAN MIDLAND NATURALIST 181.1(2019):123-132. |
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