A Review of Trout Management in Southeast Minnesota Streams

Thorn, William C.; Anderson, Charles S.; Lorenzen, William E.; Hendrickson, Deserae L.; Wagner, James W.

doi:10.1577/1548-8675(1997)017<0860:arotmi>2.3.co;2

Cited by 58 publications

(60 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most streams are second-and third-order coldwater streams managed for recreational trout fishing (primarily brown trout, Salmo trutta, and brook charr, Salvelinus fontinalis). Streams within this region were subjected to severe habitat degradation during a period of intensive agricultural development beginning in the late-1800s, but many have subsequently begun recovery (via natural processes and habitat improvement projects; Waters 1977, Thorn et al 1997). In addition to American brook lamprey and trout, streams also frequently contained sculpins (slimy, Cottus cognatus, mottled, Cottus bairdi), white sucker, Catostomus commersoni, dace (blacknose, Rhinichthys atratulus, longnose, Rhinichthys cataractae), darters (fantail, Etheostoma flabellare, johnny, Etheostoma nigrum), brook stickleback, Culaea inconstans, and creek chub, Semotilus atromaculatus.…”

Section: Methodsmentioning

confidence: 99%

Diet, feeding rate, and assimilation efficiency of American brook lamprey

et al. 2005

View full text Add to dashboard Cite

SynopsisWe examined foods ingested by American brook lamprey larvae from Minnesota streams during spring and summer seasons. The diet was dominated numerically by diatoms, but organic detritus comprised the bulk (>85%) of ingested materials. The organic contents of ingested foods did not differ among streams or between seasons, averaging approximately 70%. Feeding rates based on gut fullness were highest, but most variable, during spring. Assimilation efficiency of the organic fraction of the diet averaged >65% across streams and seasons. Larval American brook lamprey depend on organic detritus to meet most of their nutritional needs and are very efficient at digesting and assimilating these detrital foods. Survival of American brook lamprey populations may be affected by human activities that alter the production and availability of detritus within streams.

show abstract

Section: Methodsmentioning

confidence: 99%

Diet, feeding rate, and assimilation efficiency of American brook lamprey

et al. 2005

View full text Add to dashboard Cite

show abstract

“…In southeastern Minnesota, American brook lampreys inhabit streams and small rivers that often originate on cultivated glacial plains before descending through steep, wooded valleys leading to the Mississippi River (Eddy & Underhill 1974, Waters 1977, Phillips et al 1982 ) Historically, intensive agricultural development within the region, in combination with steep topography, rapid snowmelt, and torrential rains, led to greatly increased soil erosion, severe flooding, and widespread stream sedimentation (Waters 1977, Thorn et al 1997. Expanding land conservation practices during the past several decades have led to improved stream habitats (Waters 1977, Thorn et al 1997, and today more than 130 of these streams (1145 stream km) are managed for brown, Salmo trutta, brook, Salvelinus fontinalis, and rainbow trout, Oncorhynchus mykiss (Thorn et al 1997, Minnesota Department of Natural Resources (MDNR).…”

Section: Study Areamentioning

confidence: 99%

“…Expanding land conservation practices during the past several decades have led to improved stream habitats (Waters 1977, Thorn et al 1997, and today more than 130 of these streams (1145 stream km) are managed for brown, Salmo trutta, brook, Salvelinus fontinalis, and rainbow trout, Oncorhynchus mykiss (Thorn et al 1997, Minnesota Department of Natural Resources (MDNR). 2 ) Historical and recent collection records indicate that American brook lamprey have been found in 48 streams in nine drainage basins within this region (MDNR 3 ,N.…”

Section: Study Areamentioning

confidence: 99%

Spawning ecology of the American brook lamprey, Lampetra appendix

Mundahl

Sagan

2005

Environ Biol Fish

View full text Add to dashboard Cite

“…Kwak (1993) suggested that trout growth was likely to be more limited in streams with cooler water temperatures in southeast Minnesota. Thorn et al (1997) suggested that conservation practices of the 1930s-1950s increased infiltration and flow in many streams, resulting in increased area of coldwater habitat. The presence of more cold water in some stream reaches may have decreased temperatures below the optimum for brown trout growth, reported as 12.6-15.4 o C by Bachman (1991).…”

Section: Introductionmentioning

confidence: 99%

Macroinvertebrate prey availability and food web dynamics of nonnative trout in a Colorado River tributary, Grand Canyon

et al. 2014

View full text Add to dashboard Cite

Abstract.-We examined the influence of water temperature, diet, and feeding sites on growth differences of brown trout Salmo trutta in southeast Minnesota streams. Streams were classified as having either fast or slow growth based on back-calculated lengths at age and incremental growth measurements from scales collected in 2002 and 2003. Mean back-calculated lengths at age in fast-growth streams exceeded 141 mm at age 1, 229 mm at age 2, and 289 mm at age 3. In slowgrowth streams, mean back-calculated lengths did not exceed 127 mm at age 1, 208 mm at age 2, and 268 mm at age 3. The frequency of feeding sites was low in both stream groups, although possibly higher in the fast-growth streams. Water temperatures were significantly warmer in the fast-growth streams in summer and somewhat cooler in winter. We used a Wisconsin-style bioenergetics model for brown trout to independently test the effects of water temperature and diet, holding other parameters constant. Differences in temperature regime alone were not sufficient to explain differences in growth, and, in fact, predicted slower growth in the fast-growth streams in summer. Different diets resulted in differing predicted weight gains when temperature was held constant; diets with the highest energy densities always resulted in the greatest predicted weight gains. For younger cohorts, diet items with high energy densities included amphipods and mayflies (Ephemeroptera). Estimated consumption rates increased with summer temperatures. Our data suggested that growth differences among streams were likely due to differences in diet and prey availability, with more energy-rich diets available in fast-growth streams. We hypothesize that differences in diet and prey availability are mediated by water temperatures.

show abstract

A Review of Trout Management in Southeast Minnesota Streams

Cited by 58 publications

References 0 publications

Diet, feeding rate, and assimilation efficiency of American brook lamprey

Diet, feeding rate, and assimilation efficiency of American brook lamprey

Spawning ecology of the American brook lamprey, Lampetra appendix

Macroinvertebrate prey availability and food web dynamics of nonnative trout in a Colorado River tributary, Grand Canyon

Contact Info

Product

Resources

About