Cyanobacteria Identified as Cause of Elephant Mass Mortality Event

The largest contiguous population of elephants in Africa lives in the Kavango-Zambezi Trans Frontier Conservation Area (KAZA TFCA) which encompasses parts of Botswana Zimbabwe, Zambia, Angola and Namibia. Within KAZA, nearly 90% of the elephant population is concentrated in Botswana (58%) and Zimbabwe (29%). In June of 2020, over 300 elephants were found dead in Botswana under mysterious circumstances. Less than two months later—in a span of only 27 days—34 more elephant deaths were reported in neighboring Zimbabwe. The news of these mass mortality events was both notable and concerning given the importance of the KAZA elephant metapopulation to species conservation.

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Fighting Extinction: Komodo Dragons At Risk

Komodo Dragons are not only the largest lizard on Earth but also one of the most ferocious species with a fearsome reputation. The carnivorous beast can grow up to 10 feet long and can detect flesh from miles away. However, the Komodo Dragon’s serrated teeth, armored scales, and venom-laced saliva are still being outmatched by its biggest competitor: extinction.

The Komodo Dragon was previously named a “vulnerable” species by the conservation organization before being reclassified as “endangered.” There is hope that this change in status will encourage policymakers and conservation groups to strengthen and expand protections.

25 years ago, there were somewhere between 5,000 and 8,000 Komodo Dragons. Today, there are an estimated 1,380 adults and 2,000 juveniles in the wild. The Komodo Dragon is moving towards extinction.

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Shifting Conservation Status: Endangered Species Get a Second Chance

On May 21st, 2021 we celebrate National Endangered Species Day. This day helps raise awareness and increase knowledge of endangered species and wildlife, in hopes to save them. We have been lucky enough to collaborate with organizations and partners to help save species that were on the brink of extinction. Take a look at some species that are hoping for a second chance to survive and thrive.

Kit Elizabeth Ann the Black-Footed Ferret

Picture of black footed ferret Elizabeth Anne, one of the endangered species that Revive & Restore is working on.

In February 2018, resurrection efforts began for the then endangered black-footed ferret. With the help of the U.S. Fish and Wildlife Service, Revive and Restore, partners ViaGen Pets & Equine, San Diego Zoo Global, and the Association of Zoos and Aquariums, the successful cloning of a black-footed ferret was announced in February 2021. “Elizabeth Ann” was cloned from Willa, a female ferret that died in 1988, using somatic cell nuclear transfer (SCNT). Elizabeth Ann’s genetic variants reveal a lot of much-needed hope for the genetic diversity of wild ferrets. Check out the full story on Elizabeth Ann’s journey here!

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When Five Hundred Tigers Are Not Enough—Ten Years Later

Ten years ago, I wrote about the distressing news of lack of genetic diversity in the wild Amur tiger population. International Tiger Day seemed like a good time to check in on what progress has been made to both sustain and establish wild tiger populations worldwide. In 2010, 13 tiger range countries (TRC) committed to a goal of doubling the world’s tiger population by 2022.

Amur Tiger.

That timeline was an ambitious goal, as highlighted by a report published in PLOS One in November of 2018 (1). The authors assessed the recovery potential of 18 sites identified under the World Wide Fund for Nature’s (WWF) Tigers alive initiative. The recovery system has several parts: A source site with higher density of tigers that the area around it and has a legal framework that does (or will) protect the tiger population; a recovery site that has a lower density of tigers than the surrounding regions, has the ability to support more tigers but is not as supported as a source site; and a support region that connects a source and recovery site. These different site types all require different levels of management, available resources and legal protections, but they need to be managed in a coordinated way.

Aside from what is needed to manage these recovery sites, there are also other things that need to exist to support recovery of tiger populations. Some of these include support from local populations and governments, as well as environmental requirements such as breeding habitats and prey populations. For 15 of the 18 sites it is the prey population that is the sticking point. Recovery of prey populations is a slow process. The authors concluded that there need to be a commitment to achieving a realistic recovery of tiger populations, even if we miss the 2022 goal.

The fate of the wild tiger is still tenuous. Only time will tell if the interventions that are being implemented can be realized in time.

Reference

  1. Abishek, H. et al. (2018) Recovery planning towards doubling wild tigers Panthera tigris numbers: Detailing 18 recovery sites from across the range. PLOS One 13. e0207114. published online

Fished to the Edge: How DNA Identification Can Help Fight the Illegal Trade of Threatened Shark Species

Whether your first encounter was peering through the thick glass of an aquarium tank or peeking through your fingers in a darkened theater, there is something about sharks that captures our imagination. These fierce, and sometimes fearsome, creatures have existed in our oceans for over 400 million years, and  survived multiple mass extinction events, including the one that killed the dinosaurs. They are not, however, the vicious, vengeful villain that some movies would have us believe. Sharks are apex predators, who play an important role in the world’s ocean ecosystem by regulating the population of prey species below them.  Unfortunately, they are also part of one of the most threatened group of marine fish in the world. Of the more than 400 species of sharks that exist in our oceans today, approximately 15% are considered vulnerable, endangered or critically endangered. Continue reading “Fished to the Edge: How DNA Identification Can Help Fight the Illegal Trade of Threatened Shark Species”

From Dating Apps to In Vitro Fertilization, the Challenges to Saving the Endangered Northern White Rhino

In April of 2017 a profile appeared on the dating app Tinder. Describing himself as “One of a kind”, the poster was 43 years old, not in great physical shape, and yet so sought after he required around the clock body guards. His name was Sudan, and he was the last living male northern white rhino. His keepers at the Ol Pejeta Conservancy in Kenya weren’t expecting Sudan to find love. They were hoping to raise awareness of the species’ dire situation and money for the research and development of an in vitro fertilization (IVF) method for rhinos.

Northern white rhino
With only two remaining, can we save the northern white rhino? © Matt Caldwell / 123RF Stock Photo.

Northern white rhinos used to range over all or parts of Uganda, Sudan, Chad, the Democratic Republic of the Congo and the Central African Republic. In the 1960s there were an estimated 2,360 northern white rhinos left in the wild (1). Civil unrest in the region made conservation difficult, and by 2003 poaching and other pressures had reduced the number of northern white rhinos living in the wild to four individuals living in the Garamba National Park in the Democratic Republic of the Congo. There has been no sign of that wild population since 2007 (2), and they are considered extinct in the wild as of 2008. Continue reading “From Dating Apps to In Vitro Fertilization, the Challenges to Saving the Endangered Northern White Rhino”

A Big Protective Step Forward for A Rare Bee

A rusty-patched bumblebee on Culver’s root in the UW–Madison Arboretum. Photo Copyright: SUSAN DAY/UW-MADISON ARBORETUM
A rusty-patched bumblebee on Culver’s root in the UW–Madison Arboretum. Photo Copyright: SUSAN DAY/UW-MADISON ARBORETUM

Bees have been in the news many times over the past several years. Much of the concern has been focused on the collapse of honey bee colonies because these bees collect nectar to create honey and can be transported for use as pollinators for farmers. Alongside the plight of the honey bee are the declines in the population of native bees in the United States. These bees include insects like the big, fuzzy bumble bees, tiny, iridescent green sweat bees and dark blue mason bees. The native bees live in different conditions. They may be solitary, have a small colony or even nest close together in a communal arrangement, but never in the numbers likely to be seen for a honey bee colony. These lower-density populations can make seeing a change in native bee numbers more difficult. While honey bees have gained the majority of bee decline attention, native bees have suffered dramatic population loss with long-term consequences for the plants they pollinate and the animals that depend upon those plants.

On January 11, 2017, in a landmark decision by the United States Fish and Wildlife Service, the one of the rarest native bees called the rusty-patched bumble bee (Bombus affinis) has been listed as threatened, and this designation will go into effect February 10, 2017. This is the first bee in the U.S. that has been placed on the Endangered Species list. The rusty-patched bumble bee derived its name from the rust-colored patch found on its back.

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Of Elephant Research and Wildlife Crime – Molecular Tools that Matter

Here at Promega we receive some interesting requests…

Take the case of Virginia Riddle Pearson, elephant scientist. Three years ago we received an email from Pearson requesting a donation of GoTaq G2 Taq polymerase to take with her to Africa for her field work on elephant herpesvirus. Working out of her portable field lab (a tent) in South Africa and Botswana, she needed a polymerase she could count on to perform reliably after being transported for several days (on her lap) at room temperature. Through the joint effort of her regional sales representative in New Jersey/Pennsylvania (Pearson’s lab was based out of Princeton University at the time) and our Genomics product marketing team, she received the G2 Taq she needed to take to Africa. There she was able to conduct her experiments, leading to productive results and the opportunity to continue pursuing her work.

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Cold-War Bunkers Enlisted in the Fight Against Cold-Loving Fungus: More on the White-Nose Syndrome Story

Bunkers at Aroostook National Wildlife Refuge. photo credit: USFWS/Steve Agius
Bunkers at Aroostook National Wildlife Refuge. photo credit: USFWS/Steve Agius

A lot has happened since I first wrote about White-Nose Syndrome, the fungal disease that has devastated bat populations in North America. The disease, caused by the cold-loving fungus Geomyces destructans (now renamed Psuedogymnoascus destructans), has been identified in many more places, including most recently confirmed cases in Georgia, South Carolina, Illinois and Missouri in the United States and Prince Edward Island, Canada.

Controlling the spread of this disease is a tremendous problem, because as I indicated in a previous blog post, keeping a hardy fungus from spreading among a population of densely packed small animals in tiny, cold damp areas is not a simple task.

This problem is going to require creative solutions, and scientists at the U.S. Fish and Wildlife Service may have come up with a great idea that answers two questions: How do you control the spread of White-Nose Syndrome and what do you do with 43 unused Air Force bunkers? Continue reading “Cold-War Bunkers Enlisted in the Fight Against Cold-Loving Fungus: More on the White-Nose Syndrome Story”

From White Rhinos to Snow Leopards: Induced Pluripotent Stem Cells Offer Hope for Endangered Species

As an animal lover who has been passionate about genetic conservation approaches since I first heard about the “Cheetah papers” over twenty years ago, I am excited at the work highlighted in two papers published in the last year that have begun the process of applying induced pluripotent stem cell (iPSC) technologies to endangered animals (1,2).

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