Category: Patent Dorothy Hinshaw

Saving the Tasmanian Devil

4/11/2022

Dorothy gently holds a baby Tasmanian devil at Trowunna Wildlife Preserve on Tasmania

Dorothy Hinshaw Patent
Nature’s Animal Ambassador

Have you ever heard of the Tasmanian devil? It’s actually nothing like the cartoon version—the real devil is a black animal with white markings that’s smaller than a cocker spaniel, and it’s in trouble.

The Tasmanian devil once lived on the continent of Australia but now survives in the wild only on the island state of Tasmania, just off Australia’s south coast. It’s the largest surviving marsupial carnivore in the world. A marsupial’s young develop in a pouch on their mother’s belly rather than in a uterus inside their mother’s body. Other than females with young, the devils are solitary, living in a burrow in the ground during the day and coming out at dusk to feed. Devils can hunt for prey but much of their diet consists of dead animals—carrion--such as road-killed wallabies and wombats.

A disease spreading across the island since 1996 has decimated the devil population. Scientists and wildlife managers are working hard in an effort to study and protect this unique species. The killer, called Devil Facial Tumor Disease (DFTD), is unusual. It’s not caused by a virus or by bacteria. It’s a form of cancer that began with a single devil, and it can spread from one animal to another. Devils will bite each other as they fight over carrion, and the cancer cells on the face of one devil can infect another as they fight. Normally, an animal’s body can recognize cells that aren’t its own and destroy them. But DFTD cells protect themselves from being “discovered,” as if wearing an invisibility cloak. They invade their victims’ bodies and eventually kill them.

DFTD spread so fast and killed so many devils that the government and scientists feared that the Tasmanian devil would become extinct in the wild. They established disease-free colonies in captivity on the Australian mainland and on Tasmania and studied the cancer in laboratories. Now, the devil is making a comeback—there’s a vaccine that provides some protection to captive devils that have been released in the wild, and ecologists have found that some wild devils are able to fight the disease on their own. Meanwhile, another kind of facial tumor disease has appeared. It’s spreading more slowly, but biologists and the devils still have a lot to deal with. You can learn more from the Save the Tasmanian Devil Program .

Phis devil suffers from Devil Facial Tumor Disease (DFTD). photo credit: Menna Jones

Scientist Greg Woods studies a culture of DFTD cells through a microscope. photo credit: D. Patent

Graduate student Alex Fraik traps wild devils to check on the occurrence of DFTD in the wild. Here she’s releasing a devil after having taken measurements and taking notes on its health. photo credit: D. Patent

Tierney and Sassafrass act as “ambassadors” for the devil at the Healesville Sanctuary near Melbourne. photo credit: D. Patent

Traps like this are used to catch wild devils so they can be examined by researchers. A closed trap means there’s

Young devils at Trowunna Wildlife Preserve are raised together to help them become well socialized. photo credit: D. Patent

This is Dorothy's book, Saving the Tasmanian Devil, as part of the Scientists in the Field Series. Read Vicki Cobb's review of this wonderful book.

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How Horses Revolutionized the Lives of the Plains Indians

4/6/2022

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Dorothy Hinshaw Patent
Nature’s Animal Ambassador

Do you know that the Plains Indians lived in North America for centuries before they got horses? These people were nomads, moving from place to place through the seasons as they sought protection from winter weather and hunted for buffalo, their main source of food. Can you imagine how difficult it was, walking many miles in soft moccasins across the rough prairie ground with only dogs to help carry their possessions? The dogs dragged goods on a travois, a set of wooden poles strapped together. A big, strong dog could manage a load of just seventy-five pounds or less. It took an Indian band a long time to get from one place to another, and the people couldn’t bring very many things along.

Then, in the 1500s, Spanish explorers and settlers brought horses with them to North America. Indian slaves in the Southwest took care of the horses on Spanish ranches but were forbidden to ride them. Of course they figured out how useful horses were, and soon the Apache tribe had horses. In 1680, the Indians rebelled against the Spanish, driving them out of New Mexico and forcing them to leave many horses behind. From then on, horses spread northward and by 1750, tribes all the way into Canada had horses.

These powerful animals revolutionized Indian culture. With horses, the Indians could ride instead of walk. They could bring along more goods, as a horse could drag a travois load of three hundred pounds. Just five horses could transport everything needed by a family, including enough buffalo hides to make a big, comfortable tepee. Old or sick family members could be carried along on a travois as well.

Just as the Indians were embracing the horse, European Americans were moving into Indian lands, forcing some tribes to move westward onto the prairie and adopt the horse culture. Within a generation, Indians became supreme horsemen and used horses to hunt buffalo and to wage warfare. They fought against one another as well as against the U.S. Army, which was trying to clear the way for white settlers to make their homes on the prairie. By the late 1800s, the Plains tribes had been beaten and forced to live on reservations.

The Indians still value their horses, competing with them in rodeos and races as well as for recreation and transportation.

Horses made life much easier for the Plains Indians. People could ride the horses at the same time the horses pulled the travois that carried their goods. Moving camp, Edward Curtis, courtesy Library of Congress

The annual Crow Fair draws twenty to thirty thousand Indians from Canada and the U.S. to eastern Montana to celebrate and compete. Every morning, a parade of Indians showing off their beautiful costumes and horse gear passes through the camp. Wm. Munoz

These Crow chiefs proudly show off their costumes and beadwork for photographer Edward Curtis, who documented many Indian cultures during the late nineteenth and early twentieth centuries. Edward Curtis. Courtesy Library of Congress.

Every winter, a group of young Indians show their pride in their cultural traditions by challenging themselves to repeat the frigid 287-mile ride of Lakota Chief Big Foot and his band to Wounded Knee, South Dakota, where they were massacred by the U.S. Army in December, 1890. Indian Teens, Wm. Munoz

Dorothy Hinshaw Patent says about her book, The Horse and the Plains Indians: "This book was truly a labor of love and respect. Within a few years of acquiring horses after the Spanish brought them to America, Indians became among the greatest horsemen in the world and created vibrant new horse-related aspects to their cultures. I wanted to communicate these achievements to young people and to show them that despite all they have suffered at the hands of European American culture, the Indians heart and soul attachment to horses endures." For more information, click here.

Dorothy Hinshaw Patent is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more.

MLA 8 Citation
Patent, Dorothy Hinshaw. "How Horses Revolutionized the Lives of the Plains
     Indians." Nonfiction Minute, iNK Think Tank, 5 Mar. 2018,
     www.nonfictionminute.org/the-nonfiction-minute/
     How-Horses-Revolutionized-the-Lives-of-the-Plains-Indians.

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The Flaw in the Seedless Banana

1/18/2022

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Dorothy Hinshaw Patent
Nature’s Animal Ambassador

You can see how little fruit is inside a wild banana.

You probably eat bananas at least once a week—they are the most popular of all fruits, even surpassing the apple. But have you ever noticed that bananas have no seeds? Probably not. You just peel them and enjoy their soft, seedless flesh without even thinking about seeds.

If you’d been strolling through a tropical forest in New Guinea thousands of years ago and reached up to pluck a wild banana snack, you wouldn’t have wanted to eat it. The banana ancestors had big hard seeds surrounded by a small amount of sweet flesh, not worth peeling. Sometimes, however, plants appeared with fruit that had no seeds. Over time, people cherished these seedless fruits and grew the plants for their own use.

The banana plant sends up a central stalk surrounded by very large leaves, then flowers at the tip. The flowers produce a heavy load of bananas without being pollinated. Then the stalk dies. Meanwhile, the stalk sends out side shoots that become new plants. That’s a form of cloning, meaning that all of a banana plant’s progeny are genetically identical, both to their parent and to one another.

The ancestors of the modern banana could reproduce in the usual way, so their seeds contained mixtures of DNA from the mother plant and DNA from another plant’s pollen. This “sexual reproduction” allows for the genes of the plants to be combined in new ways. If a disease came along, it might kill most of the plants, but some others could have natural resistance and survive.

Because it lacks seeds, the banana has gotten into trouble. Back in the 1950s, an especially sweet and tasty variety called the Gros Michel was the commercial banana. But a devastating fungus came along and killed the plants and contaminated the soil. Growers then chose another variety, Cavendish, which resisted the disease. But now a wilt called Panama disease has shown up that kills the Cavendish plants. And because bananas lack genetic diversity and because they don’t develop seeds that mix up their genes, the Cavendish has no way of defending itself.

Banana growers are doing what they can to stop the spread of the disease, however, and up to now they have been successful. But don’t be surprised if in a few years the bananas you buy look and taste different. Luckily, there are other varieties out there, like small “finger” bananas and larger red-skinned fruits, that you can already buy in places like Hawaii.

These bananas are ready for harvest.

The banana flower cluster is huge. You can see the bananas beginning to form in the upper right of the photo.

Here are just a few kinds of bananas, from left to right—plantains, which are starchy rather than sweet; red bananas; finger bananas; and Cavendish bananas

Dorothy Hinshaw Patent's new nonfiction picture book about horses has a fresh focus: how people over the ages have decorated horses in special ways. Organized into three categories—warfare and hunting, performance and competition, performance, and ceremony—the book introduces horses such as the chariot-pulling war horse of the Persians to the rose-decorated winner of the Kentucky Derby. For more information, click here.

Dorothy Hinshaw Patent is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more.

MLA 8 Citation
Patent, Dorothy Hinshaw. "The Flaw in the Seedless Banana." Nonfiction Minute, iNK Think Tank, 21 Dec. 2017, www.nonfictionminute.org/ the-nonfiction-minute/The-Flaw-in-the-Seedless-Banana. Accessed 21 Dec. 2017.

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Lonesome George: The Face of Extinction

1/4/2022

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Dorothy Hinshaw Patent
Nature’s Animal Ambassador

“Whatever happens to this single animal, let him always remind us that
the fate of all living things on Earth is in human hands.”

These words, inscribed on a panel by the enclosure where the last of his race, the Pinta Island tortoise called Lonesome George, are no longer needed. George died on June 24, 2012, at an undetermined age, but likely more than 100 years. Even so, his actual death is merely a symbol of extinction, since he was the only one of his kind left. Without a mate for George, this species was doomed.

Perhaps George’s death, however, will impress people with the power of our own species to doom or to save others. The thoughtless short-term thinking so common among humans ignores the long-term effects of our actions. During the 1800s, whalers, fur sealers, and other seafaring folks raided the Galapagos Islands for food. The giant land tortoises that populated the islands were perfect for long-term storage, as they could survive for a year or more on a ship without eating or drinking. Their diluted urine provided drinking water as well. The Pinta tortoise population was hit the hardest by this exploitation because Pinta is the farthest north of the islands and thus the last one visited when the sailors left for the open sea.

By 1959 the tortoises had just about disappeared from Pinta. Some fishermen released three goats there, knowing they would reproduce to make island meat once more available to ships. The goat population exploded, devastating the island vegetation and dooming any animals that depended on it for survival.

In 1979, a scientist studying snails came across George, who was soon brought to the Tortoise Center on nearby Santa Cruz Island for protection. But hopes of finding a mate for George and thus saving his species faded with the years, and Lonesome George became what he remains after his death, a symbol of careless exploitation by humans.

Now, after careful restoration of his remains, Lonesome George was on exhibit at the American Museum of Natural History in 2015, after which he was returned to Ecuador. The plaque overlooking his old corral now reads, “We promise to tell your story and to share your conservation message.”

In the early stages of the taxidermy process, multiple casts of Lonesome George’s extremities were taken for future reference. © AMNH/R. Mickens

This map shows the distribution of the various races of the Galapagos tortoise. The islands, collectively known as the Galapagos, are located along the Equator and are part of the nation of Ecuador. Image by Fallschirmjäger from Wikimedia

It is said that George’s head was used as an inspiration for the design of the movie character ET. Photo by Dorothy Patent

Lonesome George was recently on view in New York City's Museum’ of Natural History's 4th floor Astor Turret. © AMNH/R. Mickens

Some good news! Unlike the Pinta subspecies, conservationists have managed to help bring back the tortoises on the Galapagos island of Espanola from a low of only 16 to a population of more than 1,000 now living on their home island. Here, scientists are recording information about the tortoises in their native environment. Photo : Flickr: Sebastian Keynes via Christian Zeigler

Read how one endangered species got returned to its natural home and thrived in Dorothy's book, When the Wolves Returned: Restoring Nature's Balance in Yellowstone. She says " I loved writing this book, which describes the positive changes in the ecology of the park that are happening since the wolves came back--healthier willows, more beavers and small predators, more song birds, and more. Wolves have also returned to several western states around Yellowstone, including Montana, and their presence there is also helping restore the natural environment."
Dorothy Patent is a member of Authors on Call. You can bring her to your school via our Zoom Room. Here's a link to her program on wolves.

MLA 8 Citation
Patent, Dorothy Hinshaw. "Lonesome George: The Face of Extinction." Nonfiction Minute, iNK Think Tank, 27 Nov. 2017, www.nonfictionminute.org/ Lonesome-George-the-face-of-extinction.

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Saving the Tasmanian Devil

How Horses Revolutionized the Lives of the Plains Indians

The Flaw in the Seedless Banana

Lonesome George: The Face of Extinction

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