David Mech, PhD (Former Employee)
Science and Products
Filter Total Items: 405
Snow as a driving force in a wolf-deer system Snow as a driving force in a wolf-deer system
No abstract available.
Authors
L.D. Mech
Relationship between age and mass among female white-tailed deer during winter and spring Relationship between age and mass among female white-tailed deer during winter and spring
No abstract available.
Authors
L.D. Mech, R.E. McRoberts
Physiological monitoring of gray wolves (Canis lupus) by radiotelemetry Physiological monitoring of gray wolves (Canis lupus) by radiotelemetry
No abstract available.
Authors
T.J. Kreeger, V.B. Kuechle, L.D. Mech, J.R. Tester, U.S. Seal
Evidence of prey-caused mortality in three wolves Evidence of prey-caused mortality in three wolves
Two alpha male wolves and a pup in separate incidents were killed by large prey, further indicating the degree of risk wolves face while hunting.
Authors
L. David Mech, Michael E. Nelson
Weights, productivity, and mortality of old white-tailed deer Weights, productivity, and mortality of old white-tailed deer
No abstract available.
Authors
M.E. Nelson, L.D. Mech
Survival of white-tailed deer fawns in relation to maternal age Survival of white-tailed deer fawns in relation to maternal age
No abstract available.
Authors
L.D. Mech, R.E. McRoberts
Possible use of wolf, Canis lupus, den over several centuries Possible use of wolf, Canis lupus, den over several centuries
Radiocarbon dating of bones found at a wolf den on Ellesmere Island suggest it probably was used by wolves over 700 years ago.
Authors
L.D. Mech, J.M. Packard
The influence of social and endocrine factors on urine-marking by captive wolves (Canis lupus) The influence of social and endocrine factors on urine-marking by captive wolves (Canis lupus)
Although serum hormones varied seasonally in all adult animals, only dominant male and female wolves urine-marked. Serum testosterone and urine-marking rates, which increased during the fall/winter breeding season, were positively correlated in both male and female dominant wolves. Estradiol, which increased in conjunction with proestrus and estrus, was not correlated with female urine...
Authors
C. S. Asa, L.D. Mech, U.S. Seal, E.D. Plotka
Physiological assessment of deer populations by analysis of urine in snow Physiological assessment of deer populations by analysis of urine in snow
We compared the nutritional status of free-ranging white-tailed deer (Odocoileus virginianus) in 3 natural yards and 1 yard where deer were supplementally fed from 1 January to 31 March 1985 in northeastern Minnesota. We monitored deer nutritonal status by sequential collection and chemical analysis of urine in snow (snow-urine) for urea nitrogen (U), sodium (Na), potassium (K), calcium...
Authors
Glenn D. DelGiudice, L. David Mech, Ulysses S. Seal
Wolf population survival in an area of high road density Wolf population survival in an area of high road density
Wolf mortality in a high-road-density area of Minnesota exceeds that in an adjacent wilderness, and is primarily human-caused. The wolf population there is maintained primarily by ingress from the adjacent wilderness areas. A road density of 0.58 km/km2 can be exceeded and the area still support wolves if it is adjacent to extensive roadless areas.
Authors
L. David Mech
Field-testing of commercially-manufactured capture collars on white-tailed deer (Odocoileus virginianus) Field-testing of commercially-manufactured capture collars on white-tailed deer (Odocoileus virginianus)
No abstract available.
Authors
L.D. Mech, K. Kunkel, R. Chapman, T.J. Kreeger
Polygyny in a wild wolf pack Polygyny in a wild wolf pack
This is the first recorded case of a single free-ranging male wolf breeding two females. The male settled with one at a den. Both females produced pups, and there is some evidence that the pups survived their first winter despite the male's being killed in summer.
Authors
L.D. Mech, M.E. Nelson
Science and Products
Filter Total Items: 405
Snow as a driving force in a wolf-deer system Snow as a driving force in a wolf-deer system
No abstract available.
Authors
L.D. Mech
Relationship between age and mass among female white-tailed deer during winter and spring Relationship between age and mass among female white-tailed deer during winter and spring
No abstract available.
Authors
L.D. Mech, R.E. McRoberts
Physiological monitoring of gray wolves (Canis lupus) by radiotelemetry Physiological monitoring of gray wolves (Canis lupus) by radiotelemetry
No abstract available.
Authors
T.J. Kreeger, V.B. Kuechle, L.D. Mech, J.R. Tester, U.S. Seal
Evidence of prey-caused mortality in three wolves Evidence of prey-caused mortality in three wolves
Two alpha male wolves and a pup in separate incidents were killed by large prey, further indicating the degree of risk wolves face while hunting.
Authors
L. David Mech, Michael E. Nelson
Weights, productivity, and mortality of old white-tailed deer Weights, productivity, and mortality of old white-tailed deer
No abstract available.
Authors
M.E. Nelson, L.D. Mech
Survival of white-tailed deer fawns in relation to maternal age Survival of white-tailed deer fawns in relation to maternal age
No abstract available.
Authors
L.D. Mech, R.E. McRoberts
Possible use of wolf, Canis lupus, den over several centuries Possible use of wolf, Canis lupus, den over several centuries
Radiocarbon dating of bones found at a wolf den on Ellesmere Island suggest it probably was used by wolves over 700 years ago.
Authors
L.D. Mech, J.M. Packard
The influence of social and endocrine factors on urine-marking by captive wolves (Canis lupus) The influence of social and endocrine factors on urine-marking by captive wolves (Canis lupus)
Although serum hormones varied seasonally in all adult animals, only dominant male and female wolves urine-marked. Serum testosterone and urine-marking rates, which increased during the fall/winter breeding season, were positively correlated in both male and female dominant wolves. Estradiol, which increased in conjunction with proestrus and estrus, was not correlated with female urine...
Authors
C. S. Asa, L.D. Mech, U.S. Seal, E.D. Plotka
Physiological assessment of deer populations by analysis of urine in snow Physiological assessment of deer populations by analysis of urine in snow
We compared the nutritional status of free-ranging white-tailed deer (Odocoileus virginianus) in 3 natural yards and 1 yard where deer were supplementally fed from 1 January to 31 March 1985 in northeastern Minnesota. We monitored deer nutritonal status by sequential collection and chemical analysis of urine in snow (snow-urine) for urea nitrogen (U), sodium (Na), potassium (K), calcium...
Authors
Glenn D. DelGiudice, L. David Mech, Ulysses S. Seal
Wolf population survival in an area of high road density Wolf population survival in an area of high road density
Wolf mortality in a high-road-density area of Minnesota exceeds that in an adjacent wilderness, and is primarily human-caused. The wolf population there is maintained primarily by ingress from the adjacent wilderness areas. A road density of 0.58 km/km2 can be exceeded and the area still support wolves if it is adjacent to extensive roadless areas.
Authors
L. David Mech
Field-testing of commercially-manufactured capture collars on white-tailed deer (Odocoileus virginianus) Field-testing of commercially-manufactured capture collars on white-tailed deer (Odocoileus virginianus)
No abstract available.
Authors
L.D. Mech, K. Kunkel, R. Chapman, T.J. Kreeger
Polygyny in a wild wolf pack Polygyny in a wild wolf pack
This is the first recorded case of a single free-ranging male wolf breeding two females. The male settled with one at a den. Both females produced pups, and there is some evidence that the pups survived their first winter despite the male's being killed in summer.
Authors
L.D. Mech, M.E. Nelson