Research library
🧬 The Felid Wiki — 3,000 research summaries
AI-curated summaries for the pride’s library — verify citations independently before citing.
150 summaries in Reproduction & Development
Adaptations of female lions to infanticide by incoming males
PaperThis influential analysis of long-term Serengeti and Ngorongoro data examined how female lions respond to the takeover of their pride by new males, an event that typically triggers infanticide of depe…
Packer C, Pusey AE · The American Naturalist · 1983
Analytical DNA fingerprinting in lions: parentage, genetic diversity, and kinship
PaperThis study applied multilocus DNA fingerprinting to wild Serengeti and Ngorongoro lions to resolve parentage and quantify relatedness within prides and male coalitions. By matching cubs to candidate s…
Gilbert DA, Packer C, Pusey AE, Stephens JC, O'Brien SJ · Journal of Heredity · 1991
Application of assisted reproductive technologies for felid population management
PaperThis review examined how artificial insemination, in vitro fertilization, embryo transfer, and gamete cryopreservation can support the genetic and demographic management of captive felid populations.…
Swanson WF · Theriogenology · 2006
Biology of ovarian cycles, pregnancy and pseudopregnancy in the domestic cat
PaperThis review summarized the reproductive physiology of the domestic cat, which serves as the principal model for understanding felid reproduction. The authors described the follicular phase and estrous…
Tsutsui T, Stabenfeldt GH · Journal of Reproduction and Fertility. Supplement · 1993
Birth of African Wildcat cloned kittens born from domestic cats
PaperThis study reported the successful cloning of an endangered small felid by somatic cell nuclear transfer using domestic cats as oocyte donors and surrogate mothers. Researchers transferred nuclei from…
Gomez MC, Pope CE, Giraldo A, Lyons LA, Harris RF, King AL, Cole A, Godke RA, Dresser BL · Cloning and Stem Cells · 2004
Cheetahs of the Serengeti Plains: Group Living in an Asocial Species
PaperThis book reports a long-term behavioral study of free-ranging cheetahs, with extensive coverage of reproduction and development. The author documented female ranging and mating, the formation of male…
Caro TM · University of Chicago Press · 1994
Comparative aspects of steroid hormone metabolism and ovarian activity in felids, measured noninvasively in feces
PaperThis study validated and applied fecal steroid hormone assays to track ovarian activity in multiple felid species without restraint or blood sampling. The authors characterized how estrogen and proges…
Brown JL, Wasser SK, Wildt DE, Graham LH · Biology of Reproduction · 1994
Comparative endocrinology of domestic and nondomestic felids
PaperThis review compiled what was known about reproductive hormone patterns across the cat family, drawing heavily on noninvasive fecal and urinary steroid monitoring developed for zoo animals. The author…
Brown JL · Theriogenology · 2006
Embryo technology in conservation efforts for endangered felids
PaperThis review synthesized progress in applying in vitro fertilization, embryo culture, embryo transfer, and cryopreservation to nondomestic cats, using the domestic cat as a research model. The author s…
Pope CE · Theriogenology · 2000
Genetic basis for species vulnerability in the cheetah
PaperBuilding on earlier allozyme work, this study combined skin-graft acceptance experiments, semen analysis, and assays of genetic markers to argue that the cheetah's extreme genetic uniformity underlies…
O'Brien SJ, Roelke ME, Marker L, Newman A, Winkler CA, Meltzer D, Colly L, Evermann JF, Bush M, Wildt DE · Science · 1985
High juvenile mortality in the cheetah and its consequences for maternal care
PaperThis study quantified cub survival in free-ranging Serengeti cheetahs and analyzed how the threat of predation shapes maternal behavior. By following known mothers and litters, the author found that t…
Laurenson MK · Journal of Zoology · 1994
Noninvasive assessment of adrenal activity associated with husbandry and behavioral factors in the captive clouded leopard
PaperThis study used fecal glucocorticoid monitoring to investigate why captive clouded leopards often breed poorly and show high rates of mate aggression. The authors related adrenal hormone output to hou…
Wielebnowski NC, Fletchall N, Carlstead K, Busso JM, Brown JL · Zoo Biology · 2002
Reproductive and genetic consequences of founding isolated lion populations
PaperThis study compared the outbred Serengeti lion population with the small, geographically isolated Ngorongoro Crater population, which descended from few founders and experienced inbreeding. The author…
Wildt DE, Bush M, Goodrowe KL, Packer C, Pusey AE, Brown JL, Joslin P, O'Brien SJ · Nature · 1987
Reproductive cessation in female mammals
PaperUsing decades of individual life-history records from wild lions and baboons, this study tested whether females experience a true post-reproductive lifespan analogous to human menopause. The authors f…
Packer C, Tatar M, Collins A · Nature · 1998
Research overview: GnRH agonist implants for reproductive suppression in felids
OverviewGonadotropin-releasing hormone agonist implants offer a reversible method of suppressing reproduction in cats by downregulating the reproductive axis after an initial stimulation. This overview survey…
Research overview: GnRH-based ovulation induction protocols in felids
OverviewGonadotropin-releasing hormone and its agonists are used to induce ovulation in cats by stimulating the pituitary to release luteinizing hormone, substituting for the natural mating stimulus. This ove…
Research overview: age at independence in tiger cubs
OverviewTiger cubs remain with their mother for an extended period, learning to hunt before dispersing to establish their own ranges. This overview surveys data on the age at which young tigers become indepen…
Research overview: age-related fertility decline across felids
OverviewAs cats age, their reproductive output typically declines through reduced fertility, smaller litters, and lower offspring survival. This overview surveys patterns of age-related fertility decline acro…
Research overview: artificial insemination programs in cheetahs
OverviewArtificial insemination offers a way to move cheetah genetics between institutions and to breed animals that will not pair naturally, but it remains technically challenging in this species. This overv…
Research overview: artificial insemination success rates in nondomestic felids
OverviewPregnancy rates from artificial insemination in wild cats remain modest and variable, reflecting the biological and technical challenges of the procedure. This overview surveys reported success rates…
Research overview: assisted reproduction in ocelots
OverviewThe ocelot has served as a focus for applying assisted-reproduction techniques to a small spotted cat of conservation concern. This overview surveys reproductive research on ocelots, including reprodu…
Research overview: assisted reproduction in the Iberian lynx
OverviewThe critically endangered Iberian lynx has been the focus of an intensive conservation breeding program supported by reproductive science. This overview surveys assisted-reproduction efforts for the s…
Research overview: asymmetric reproductive suppression in felid groups
OverviewWhen some individuals in a group reproduce while others are suppressed, the resulting asymmetry reflects social and physiological mechanisms regulating reproduction. This overview surveys asymmetric r…
Research overview: balancing genetic and demographic management in felids
OverviewManaging captive felid populations requires balancing genetic goals, such as retaining diversity, against demographic goals, such as maintaining stable numbers and age structure. This overview surveys…
Research overview: behavioral competence and reproductive success in captive breeding
OverviewSuccessful reproduction in captivity depends not only on physiology but on appropriate behavior, including mate recognition, courtship, and competent maternal care. This overview surveys how behaviora…
Research overview: captive breeding of the Amur leopard
OverviewThe critically endangered Amur leopard is supported by a coordinated captive breeding program intended to safeguard the subspecies and potentially supply animals for reinforcement. This overview surve…
Research overview: communal denning and creche formation in lions
OverviewLionesses that give birth around the same time pool their cubs into a communal creche, nursing and defending young cooperatively. This overview surveys how creches form following synchronized births,…
Research overview: contraception for population control in captive felids
OverviewManaging the size and genetics of captive felid populations sometimes requires preventing reproduction in animals that are genetically overrepresented or surplus to program needs. This overview survey…
Research overview: cooperative population management of captive tigers
OverviewCaptive tigers are managed cooperatively across institutions to maintain genetically healthy, self-sustaining populations as insurance against wild declines. This overview surveys how tiger breeding p…
Research overview: copulation frequency and the ovulation threshold in cats
OverviewIn induced-ovulating felids the chance that mating triggers ovulation rises with the number and spacing of copulations, suggesting a threshold of cumulative stimulation that the female's neuroendocrin…