Use of Fecal Steroid Metabolites to Estimate the Pregnancy Rate of a Free-Ranging Herd of Tule Elk

1999 ◽  
Vol 63 (2) ◽  
pp. 561 ◽  
Author(s):  
Monica A. Stoops ◽  
Gary B. Anderson ◽  
Bill L. Lasley ◽  
Susan E. Shideler
Keyword(s):  
Pregnancy Rate ◽  
Fecal Steroid ◽  
Tule Elk ◽  
Free Ranging

Reassertion of the Park Ideal

2016 ◽  
Author(s):  
Laura Alice Watt ◽  
David Lowenthal
Keyword(s):  
Natural Resource ◽  
National Park ◽  
Cultural Resources ◽  
Wild Animals ◽  
Natural Landscape ◽  
Point Reyes ◽  
Tule Elk ◽  
Free Ranging

This chapter chronicles how the PRNS has continued to steer management toward the national park ideal of scenic wild-yet-managed nature, despite giving more attention to cultural resources, as well as making official statements about the value of the area's ranching history. This can particularly be seen playing out in the Seashore's natural resource projects and plans since 1995. Moreover, these efforts to create a more wild and natural landscape have often come at the expense of the working ranches. This trend is most clearly reflected in the reintroduction of tule elk to Point Reyes, which have spread onto the pastoral zone and are now threatening the long-term viability of several historic ranches. The NPS's lack of action to counter the effects of free-ranging elk on ranch operations seems based in idealizations of both wilderness and wild animals as requiring hands-off management.

Measurement of immunoreactive progestins excreted in faeces as a potential indicator of pregnancy

1993 ◽  
Vol 20 (6) ◽  
pp. 739 ◽  
Author(s):  
NC Larter ◽  
P Arcese ◽  
R Rajamahendran ◽  
CC Gates
Keyword(s):  
Pregnancy Rate ◽  
Bison Bison ◽  
Non Invasive ◽  
Faecal Samples ◽  
Potential Indicator ◽  
Invasive Method ◽  
Wood Bison ◽  
Free Ranging

We measured the concentration of immunoreactive progestins extracted from 41 faecal samples of female wood bison (Bison bison athabascae) as a potential indicator of pregnancy. The concentration of faecal progestins fell into two distinct groups, with an approximate 4-fold difference in mean progestin level (1391.9ng g-1 and 58269ng g-1). We suggest that measuring progestin concentration in the faeces of free-ranging animals is a non-invasive method that could be used to assess pregnancy rate.

scholarly journals TESTING FOR MYCOBACTERIUM AVIUM SUBSP. PARATUBERCULOSIS INFECTION IN ASYMPTOMATIC FREE-RANGING TULE ELK FROM AN INFECTED HERD

2003 ◽  
Vol 39 (2) ◽  
pp. 323-328 ◽  
Author(s):  
Elizabeth J. B. Manning ◽  
Thomas E. Kucera ◽  
Natalie B. Gates ◽  
Leslie M. Woods ◽  
Maura Fallon-McKnight
Keyword(s):  
Mycobacterium Avium ◽  
Mycobacterium Avium Subsp ◽  
Infected Herd ◽  
Tule Elk ◽  
Mycobacterium Avium Subsp Paratuberculosis ◽  
Free Ranging

A comparison of fecal steroid metabolite concentrations between harem and bachelor stallions in a free-Ranging population of przewalski's horses (Equus ferus przewalskii)

Zoo Biology ◽  
2017 ◽  
Vol 36 (2) ◽  
pp. 127-131
Author(s):  
Maureen D'Souza-Anjo ◽  
Bruce W. Christensen ◽  
Kristin Brabender ◽  
Waltraut Zimmermann ◽  
Philip H. Kass ◽  
...  
Keyword(s):  
Fecal Steroid ◽  
Metabolite Concentrations ◽  
Free Ranging ◽  
Steroid Metabolite

Fecal steroid analysis of ovarian cycles in free-ranging baboons

1995 ◽  
Vol 36 (4) ◽  
pp. 285-297 ◽  
Author(s):  
Ronda Stavisky ◽  
Elizabeth Russell ◽  
Joy Stallings ◽  
E. O. Smith ◽  
Carol Worthman ◽  
...  
Keyword(s):  
Fecal Steroid ◽  
Steroid Analysis ◽  
Free Ranging ◽  
Ovarian Cycles

An assessment of the reproductive biology of Yellowstone bison (Bison bison) subpopulations using noncapture methods

1996 ◽  
Vol 74 (1) ◽  
pp. 8-14 ◽  
Author(s):  
J. F. Kirkpatrick ◽  
J. C. McCarthy ◽  
D. F. Gudermuth ◽  
S. E. Shideler ◽  
B. L. Lasley
Keyword(s):  
Reproductive Biology ◽  
National Park ◽  
Demographic Data ◽  
Fetal Loss ◽  
Bison Bison ◽  
Age Group ◽  
Fecal Steroid ◽  
Lactating Cows ◽  
Steroid Analysis ◽  
Free Ranging

Five parameters of reproductive biology (number of live calves, rates of tending lactating and nonlactating cows, and age-specific calving and pregnancy rates) were measured for the Mary Mountain (≈2500) and Northern Range (≈600) herds of bison (Bison bison) in Yellowstone National Park between 1990 and 1993. Three physiological events (ovulation, pregnancy, fetal loss) affecting reproductive success were measured using urinary or fecal steroid analysis. Adult Mary Mountain cows had significantly fewer pregnancies and calves than the Northern Range cows. Approximately 85% of cows tended by bulls, 76% of detected ovulations, and 78% of detected fall pregnancies were among nonlactating cows. Greater than 80% of all pregnancies occurred in cows ≥4 years old in both herds. However, 100% of all pregnancies among lactating cows occurred in cows ≥5 years old in both herds. In the Mary Mountain subpopulation, only 5% of all pregnancies were among cows <4 years old, while 14.2% of all pregnancies in the Northern Range herd occurred in cows in the same age group. These data indicate that (i) the number of live calves and the pregnancy rate are significantly reduced among lactating cows, (ii) reproductive failure among lactating cows is primarily caused by ovulation failure, (iii) lactating cows that successfully reproduce are exclusively animals ≥5 years old, and (iv) the results of urinary or fecal steroid analysis are consistent with behavioral and demographic data and can be used to evaluate specific aspects of reproductive physiology among free-ranging ungulates.

DIAGNOSING PREGNANCY IN FREE-RANGING ELK USING FECAL STEROID METABOLITES

1995 ◽  
Vol 31 (4) ◽  
pp. 514-522 ◽  
Author(s):  
P. J. White ◽  
Robert A. Garrott ◽  
Jay F. Kirkpatrick ◽  
Elizabeth V. Berkeley
Keyword(s):  
Fecal Steroid ◽  
Free Ranging
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