Category — CREW
Our Zoo Volunteer Observers (ZVO) are a great asset to the Zoo & our Carl H. Lindner Jr. Family Center for Conservation and Research of Endangered Wildlife (CREW) – being our eyes (and ears sometimes) when keepers go home at night. They have been busy lately monitoring polar bear breeding activity and watching our pregnant giraffe via web cam 24-hrs-day for signs of labor.
The ZVOs have been monitoring the polar bears daily to look for signs of impending estrus/breeding behavior. Their diligent observations are helping CREW researchers learn more about polar bear reproduction and reproductive behavior.
Thank you ZVOs!
March 21, 2014 2 Comments
Guest blogger: Sophie Williams, Advanced Inquiry Program (AIP) student and consultant on the Passenger Pigeon Memorial renovation
The reason we study the story of the passenger pigeon is not to be sad about its loss, but to be aware. Humans have a great capacity to do good, but we also have the ability to exhaust seemingly endless riches. It is important to recognize the impact we as humans can have on our environment, and take steps to conserve natural resources, both species and habitats, while we can.
The Cincinnati Zoo & Botanical Garden is at the cutting-edge of conservation research and action. From genetic research conducted at the Zoo’s Center for Conservation and Research of Endangered Wildlife (CREW) to the Zoo’s Go Green initiatives you can participate in both at the Zoo and at home, the Cincinnati Zoo is committed to saving endangered plants and animals from extinction in North America and around the world. Here are just a few examples.
Sumatran Rhino Conservation
The Sumatran rhinoceros is one of the most endangered animals on the planet, with only about 100 individuals left. CREW’s Signature Sumatran Rhino Project has been a leader in captive breeding efforts for this critically endangered animal since 1997. In 2001, the first Sumatran rhino calf to be born in captivity in 112 years was born at the Cincinnati Zoo, thanks to CREW’s breakthrough research. Since then, two other calves have been born at the Zoo, and in 2007, the Zoo’s first-born rhino calf, Andalas, was relocated to the Sumatran Rhino Sanctuary (SRS) on the island of Sumatra to serve as the catalyst for a breeding program in the species’ native land. A few years later, Andalas’s mate, Ratu, gave birth to a healthy male calf, a huge success for the species!
In addition to its leadership role in the Sumatran rhino captive breeding program, CREW scientists partner with conservation organization Rhino Global Partnerships to protect Sumatran rhinos in the wild by helping to support Rhino Protection Units. These units are trained to protect the rhinos from poachers, the greatest threat to the species. Furthermore, financial support and CREW staff expertise are provided to facilitate the captive breeding program on Sumatra. CREW’s Signature Sumatran Rhino Project, with its international collaboration, is conservation work at its finest.
Western lowland gorillas are critically endangered in the wild, with less than 175,000 individuals. Due primarily to habitat destruction caused by logging, mineral mining, and agricultural expansion, wild gorilla numbers continue to shrink. The bushmeat trade—the killing of wild animals to be used as human food—is also a major threat to the western lowland gorilla population throughout the Central African rainforests. Over 1,000 gorillas are illegally poached for the bushmeat trade each year.
The Cincinnati Zoo supports wild gorilla conservation efforts such as the Mbeli Bai Study. The Mbeli Bai Study is the longest running research being done with wild western lowland gorillas. Through research, local education programs, publications, and documentaries, the Mbeli Bai Study is raising international awareness for gorillas and their struggle for survival.
African Lion Conservation
Another way the Zoo contributes to species conservation worldwide is through support of global initiatives to protect wildlife and minimize human-wildlife conflict. The Zoo provides funding to support Rebuilding the Pride, a community-based conservation program that combines tradition and modern technology to restore a healthy lion population while reducing the loss of livestock to lions in Kenya’s South Rift Valley.
Local Maasai research assistants track the movement of both livestock and lions in an effort to understand seasonal movements and identify conflict hotspots. Some of the lions have been fitted with Global Positioning System (GPS) collars for better tracking. The collars transmit four locations a day to a central server, giving detailed information on the exact movement of the lions. Knowing where the prides are lets herders know where to avoid grazing their livestock.
The program also deploys a Conflict Response Team to mitigate any conflicts that arise between people and lions. When herders must move through areas with lions, they call on community game scouts to accompany them for extra protection. The team also helps find and rescue lost livestock that would have otherwise fallen victim to predation.
Thanks to these efforts, lion populations in the region are growing. Once down to a low of about 10 known lions in the area, the population is now estimated to be nearly 70. The prides have been producing cubs and new lions are moving in from surrounding areas. The Rebuilding the Pride program has greatly contributed to the robustness of the lion population, minimized human-wildlife conflict, and become a strong community-based conservation program.
To read the other posts in this series, click here. Join us in April as we celebrate Earth Day and community activism!
March 17, 2014 No Comments
Elvis has spent the past three weeks sniffing fecal samples from polar bears around the country, making his predictions on which bears might be pregnant. Elvis is trained to pause and sit immediately when he detects a pregnancy—and does not show interest at samples from non-pregnant bears. Last week, Elvis was presented multiple times with two separate samples (collected on 10/12/13 and 10/20/13), from the Cincinnati Zoo’s female polar bear, Berit. Unfortunately, Elvis did not show interest in either sample, indicating she may not be expecting cubs this fall.
The sniffer dog project is part of a larger effort to study reproduction in polar bears. Scientists at CREW have been monitoring polar bears since 2008 and have analyzed over 14,000 fecal samples from 55 polar bears living in North American zoos. In addition to the Elvis test, we’ve been measuring Berit’s fecal hormone levels and performing ultrasound examinations in attempts to gain more information about her pregnancy status. Taken together, it seems that Berit is probably experiencing a pseudo-pregnancy, also known as a false pregnancy. Pseudo-pregnancy occurs when a female’s hormones, namely progesterone, increase to levels similar to those of a true pregnancy. However, in a pseudo-pregnancy, no fetus is present. Like pregnant bears, pseudo-pregnant females often gain weight (Berit gained almost 200 pounds this season!) and may behave like they’re pregnant, building nests and spending more time in their dens.
We’re not sure why pseudo-pregnancy occurs in polar bears but it seems to be a common phenomenon in many females we’ve monitored. A goal of CREW’s polar bear research is to develop a test to differentiate pseudo-pregnancy from true pregnancy. If Elvis proves successful, the next step is to identify the specific compound in the fecal samples that Elvis is signaling on and then develop a laboratory-based method to measure it. A test that distinguishes pregnancy from pseudo-pregnancy could potentially be applicable to other species that experience pseudo-pregnancy, such as endangered cat species, otters, and red pandas.
Since the sniffer dog project is still in the testing phase, we are not making any major management changes based on Elvis’s predictions. Berit’s keepers continue to keep a close eye on her and she still has access to a den and extra bedding if she wants it. Berit has never produced offspring, so while Elvis’s predictions are disappointing, they are not a total surprise. Berit is of prime reproductive age for a polar bear (14 years) and we have not lost hope that she may have cubs next year!
November 19, 2013 No Comments