The reproductive biology of female Père David's deer (<i>Elaphurus davidianus</i>)

Wemmer, Chris; Halverson, Tim; Rodden, Melissa D.; Portillo, Timothy

doi:10.1002/zoo.1430080107

Cited by 15 publications

(2 citation statements)

References 9 publications

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“…The calving rate of 37.1 per cent in this herd for the 7-year study period is low compared with the report of Wemmer and others (1989) who found that, between 1975 and 1987, a herd of 27 adult Père David's does under similar housing conditions in Virginia demonstrated a calving rate of 89.2 per cent. Interestingly, the coyote population has been estimated to have increased in Ohio fivefold between 1990 and 2011 ( http://wildlife.ohiodnr.gov/species-and-habitats/species-guide-index/mammals/coyote ), and the population of white-tailed deer has grown from an estimated 17,000 in 1970 to 700,000 in 2006 ( http://wildlife.ohiodnr.gov/portals/wildlife-/pdfs/publications/wildlife%20management/pub087.pdf ).…”

Section: Discussioncontrasting

confidence: 70%

Investigation of Neospora caninum seroprevalence and potential impact on reproductive success in semi‐free‐ranging Père David's deer (Elaphurus davidianus)

Bapodra¹,

Wolfe

2015

Veterinary Record Open

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This study aimed to determine the prevalence and reproductive impact of Neospora caninum in a herd of semi-free-ranging Père David's deer (Elaphurus davidianus) at a conservation facility, following a suspected abortion storm in 2008. Serum samples (n=103) collected from 60 individuals between 2002 and 2011 were evaluated using competitive ELISA for the detection of N. caninum-specific antibodies. Of the 103 samples, 73 (70.9 per cent) were positive for N. caninum antibodies, with a mean±sd competitive inhibition (CI) of 77.6±19.8 per cent. Thirty (29.1 per cent) samples were seronegative, with mean CI of 15.2±9.70 per cent. A significant negative linear relationship was noted between the proportion of seropositive animals and age (R2=0.228, P<0.001). Calving rates of adult females from 2005 to 2011 ranged from 15.4 per cent to 52 per cent (mean 35.5±11.3 per cent), and did not correlate with mean CI values (Spearman's rank correlation coefficient=0.072, P=0.878). While both horizontal and transplacental transmission are likely contributing to persistent herd seropositivity, the role of N. caninum in reproductive success in this and other populations of endangered ungulates remains to be explored.

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Section: Discussioncontrasting

confidence: 70%

Investigation of Neospora caninum seroprevalence and potential impact on reproductive success in semi‐free‐ranging Père David's deer (Elaphurus davidianus)

Bapodra¹,

Wolfe

2015

Veterinary Record Open

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“…In most of the temperate deer species, females are seasonally polyestrous and exhibit the estrous cycles ranged from 17 to 21 days in chital deer (Chapple et al ., 1993), 21 to 26 days in fallow deer (Asher, 1985;Asher et al ., 1986Asher et al ., , 1988, 18 to 21 days in red deer (Adam et al ., 1985;Guinness et al ., 1971;Kelly and Moore, 1977), 22 to 29 days in white-tailed deer (Plotka et al ., 1980;Verme, 1985) or blacktailed deer (Thomas and Cowan, 1975), and 18 to 20 days in the Pere David's deer (Curlewis et al ., 1988;Wemmer et al ., 1989). As observed in the present study, the duration of estrous cycles of the polyestrous FSD hinds, inhabiting in tropical southern Taiwan, based on the consecutive basal progesterone values during the major rutting season, were 19.3 ± 1.8 days.…”

Section: Discussionmentioning

confidence: 99%

Serum Progesterone Changes in Luteal Cyclicity and Duration of Estrous Cycle in Formosan Sika Deer (Cervus nippon taiouanus) Hinds

BingTsan¹,

Cheng²,

Huang³

et al. 2002

Zoological Science

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A study was conducted to investigate the serum progesterone (SP(4)) profiles and duration of estrous cycles in the farmed Formosan sika deer (FSD; Cervus nippon taiouanus) during the major breeding season. Five parous, open and non-milking hinds were allotted to collect peripheral blood samples twice weekly for P(4) measurement by radioimmunoassay beginning at the initiation of the rutting season indicated by rutting behaviors of the sexually mature stags. The hinds were polyestrous as proved by cyclic changes of SP4 levels. After the presumptive estrus shown by the lowest concentration of SP(4) (0.20+/-0.01 ng/ml), this ovarian hormone markedly elevated on day 7 of the cycle (1.67+/-0.11 ng/ml), reached plateau (3.15+/-0.16 ng/ml, P<0.01) during days 11 to 18, and then declined to the basal levels in the subsequent estrus. It is concluded that mean duration of the estrous cycle in FSD during the major rutting season is 19.3 days with a range of 17 to 21 days, and that the patterns of circulating progesterone profiles during the estrous cycles of the FSD are similar to those of other deer species so far investigated.

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Compensatory extension of gestation length with advance of conception in red deer (Cervus elaphus)

et al. 2005

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Calving date in many mammals is matched to the time of greatest food availability. Out of season calving results in heavy penalties in terms of own and offspring survival or body condition. This study examined whether gestation length is affected by advancing fertilisation. Thirty-six red deer hinds (of the Iberian and Scottish subspecies) were subjected to a synchronisation treatment of oestrus, ovulation, and artificial insemination on three dates, with remaining non-pregnant females mated with an intact male in a last group. Gestation was longer the more the fertilisation was advanced; gestation lasted 241.5+/-1.3 days (d) in the first group, 237.4+/-1.2 d in the second, 235.1+/-1.3 d in the third, and 231.2+/-1.6 d in the last. Mean gestation lasted 234.2+/-0.7 d. Hinds gained less weight during gestation the more the fertilisation was advanced. The difference was due at least in part to net body weight of the hind after calving compared to that at mating, and calves did not differ in birth weight. As early born calves suffer greater mortality in the field, this enlargening of gestation might be a compensatory response of the hinds to match calving with food availability. Under natural conditions, similar small modifications of gestation length may help hinds to overcome short-term adverse conditions for calving. Because calf mortality is correlated with birth weight, hinds may have kept calf birth weight constant at the expense of greater body weight loss.

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The reproductive biology of female Père David's deer (Elaphurus davidianus)

Cited by 15 publications

References 9 publications

Investigation of Neospora caninum seroprevalence and potential impact on reproductive success in semi‐free‐ranging Père David's deer (Elaphurus davidianus)

Investigation of Neospora caninum seroprevalence and potential impact on reproductive success in semi‐free‐ranging Père David's deer (Elaphurus davidianus)

Serum Progesterone Changes in Luteal Cyclicity and Duration of Estrous Cycle in Formosan Sika Deer (Cervus nippon taiouanus) Hinds

Compensatory extension of gestation length with advance of conception in red deer (Cervus elaphus)

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