Leopard cheetah jagu的問題，透過圖書和論文來找解法和答案更準確安心。 我們找到下列包括價格和評價等資訊懶人包

Reproductive Physiology of Taiwanese Pangolin (Manis pentadactyla pentadactyla)

為了解決Leopard cheetah jagu的問題，作者Bharti Arora 這樣論述：

Taiwanese pangolin (Manis pentadactyla pentadactyla) knowledge of reproductive physiology is imperative to maintaining a healthy ex-situ and in-situ population. Pangolins have been exhibited in zoos since the mid-1800s, but these prolonged years of captivity are facing a dilemma to propagate succes

sful breeding in captivity. According to International Studbook and Formosan pangolin PHVA final report, this species' gestation length is confined in skepticism as well as has a low reproductive rate. Moreover, loss of neonates to stillbirths and incorrect maternal care during the critical period o

f pregnancies in captivity. As females do not exhibit clear signs of estrus or any specific sexual behavior and sometimes the signs of pregnancy have not been recognized to facilitate association between males and females to generate good breeding conditions. Pangolins have captivated the attention

to unravel ecological and behavioral parameters, but reports on reproductive endocrinology are sketchy. I studied various reproductive physiology parameters (mating, pregnancy, gestation, and parturition) using serum and fecal samples procured from longitudinal sampling.Fecal samples obtained enable

d me to devise various metabolic forms of adrenal and gonadal steroids with the establishment of a pivotal study using the technique of Electrospray Mass Spectrometry (ESI-MS) existing in these endangered species of pangolins. The study also helped me unveil that Taiwanese pangolin does not show any

significant differences among the functional categories of sub-adult (SA) and adult (A) in both males and females. However, the males showed significantly high differences in the level of fecal glucocorticoids compared with females.The long-term hormonal examination of serum samples of pangolins fr

om captivity illustrated significant differences in serum estradiol concentration between non-pregnant and pregnant females. However, both groups showed that estradiol's peak is synonymous with the annual mating season tied during the end of the year (November to January). The rising levels of proge

sterone in non-pregnant individuals during January suggest that estradiol and progesterone help in ovulation and estrus behavior in females. In pregnant females, the progesterone concentration sustained from January to September and drastically declined to mark the phase of parturition (October-Dece

mber) in this species. In contrast, the non-pregnant females illustrated baseline concentration of serological progesterone apart from the estrus phase as marked in other closely related carnivores. This long gestation period of ~275 days (January-September) witnessed in pregnant females that it is

highly probable that pangolins exhibit delayed implantation phenomena. The prolactin studies explained that pangolins exhibit a brief period of diapause because of the nursing behavior, which lasts from December to May.Interestingly, males showed a seasonal pattern of testosterone levels. The endocr

inological results suggest that the males engage in the mating behavior when the testosterone levels are the highest (October) in synchrony with females' parturition behavior. In summary, the hormonal evidence found both in male and female Taiwanese pangolin suggests that pangolins are seasonal bree

ders. This study also provided needed information on endocrinology and reproductive physiology for a hitherto unstudied species and provided a basis for a crucial contribution to future reproductive measures in conserving this enigmatic mammal.