Category — Cats
Learn about cheetahs, red pandas and tigers from our 6th – 8th grade Working with Wildlife Summer Campers!
June 18, 2014 No Comments
Zoo guests may have noticed that John the lion has not been in his yard for the past couple of days. He’s been absent for a very good reason! On Wednesday, we opened the doors that separated John and Imani and introduced the male and female lions to each other for the first time!
This introduction has been a long time coming; several months of close monitoring and careful preparation have led up to this big moment for our young lions. For the last year, John and Imani have been living in separate enclosure areas. Typically John was housed in 2 indoor enclosures and had access to our exhibit yard. Imani was being housed in 3 indoor enclosures (across the hall from John), and had access to her own private play yard as well. Though the lions could see, hear and smell each other on a daily basis, they’d never met in the same space until now.
In order to ensure a successful first meeting, keepers wanted to be sure that both lions were fully grown, sexually mature, and confident and comfortable in their new homes at the Cincinnati Zoo before the lions began to share a territory. Additionally, keepers had to plan an introduction timeline that would be conducive to the potential birth of cubs (since John and Imani are a recommended breeding pair within the African lion SSP). An SSP, or Species Survival Plan, allows different zoological facilities to cooperatively manage specific, and typically threatened or endangered, species populations. In order to receive a breeding recommendation for two animals, SSP coordinators assess the representation of each animal’s genes within the captive population. If the genes of both individuals are not overly represented among the captive population, and if there is a zoo with the space to house the offspring, then you get the “okay” to breed the pair. Utilizing SSPs allows zoos to ensure that we are maintaining as much genetic variation as possible among captive populations, and also avoiding inbreeding and unwanted pregnancies.
With warmer weather on the horizon and both lions showing positive indicators that they were ready to meet, the keepers determined that the time was right to introduce John and Imani. Initially, both cats were a little shy and hesitant to say hello, but after a few minutes of awkward, sideways glances, John came through the door for a sniff. Some grumbles, barks and swats ensued (perfectly normal and expected behaviors), and then both lions quickly settled down and even made some attempts at breeding!
The two have been spending time together behind the scenes ever since, and the keepers are absolutely thrilled with their progress. John and Imani will slowly be introduced to the exhibit yard together according to their comfort level. While John is perfectly at home in the exhibit yard, Imani has not been out there yet, so we will respect her need to move forward slowly. Her comfort level will likely dictate when our lions will be publicly on exhibit together, and we appreciate everyone’s patience and understanding during this transition period.
On behalf of our lions, and all the keepers and staff involved, thank you all for your support and well-wishes! Our zoo guests have been so great about accepting John into the Zoo family, and we can’t wait for you all to meet Imani and see our newly bonded pair out on exhibit together soon!
May 2, 2014 7 Comments
CREW continues to make progress in improving the success of artificial insemination (AI) for propagating endangered
cats. In recent research, we incorporated treatment with oral progesterone (Regumate) into our AI protocol for domestic cats to down-regulate ovarian function prior to ovarian stimulation. This approach allows us to control ovarian activity more precisely and conduct AI procedures on a fixed time schedule.
Our first attempt using this method in exotic felids involved our fishing cat named Ratana,who was incapable of breeding naturally after losing a front leg due to injury. Ratana was fed a small amount of oral progesterone daily for one month to suppress her ovarian activity and then treated with gonadotropins to induce follicular growth and ovulation. Laparoscopic AI of both oviducts with freshly collected sperm from our resident male, named Gorton, resulted in conception and the birth of a male fishing cat kitten after a 69 day gestation.
This kitten was the first non-domestic cat born following the use of oral progesterone for fixed time AI, and represents the fifth cat species (fishing cat, ocelot, Pallas’ cat, tiger, domestic cat) that we have produced with oviductal AI. This new approach could greatly advance our capacity to use AI for the genetic management of endangered felid species.
April 11, 2014 1 Comment