BioQuakes

AP Biology class blog for discussing current research in Biology

Tag: elephant

Elephant Trunks: The Most Convenient Way to Reach Food

New studies have indicated that elephants are using the air that they blast through their trunks to grasp for food in hard-to-reach areas. Way back when, Charles Darwin had even suggested that elephants might manipulate their breath to reach food. Scientists from Kyoto University and SOKENDAI decided to research this behavior in elephants. They predicted that the farther away the piece of food is, the more frequently the elephants would use their breath/air through their trunks to bring it near them. To test their hypothesis, they observed two captive, female elephants, Suzuko and Mineko at the Kamine Zoo. The researchers created this virtual grid in a ditch, enclosing the elephants. They placed food in different areas of the grid. The various types of food included: apples, bamboo, fallen leaves, potatoes, and hay. After spacing out these foods, they filmed the elephants trying to reach for them. 128 trials took place over 32 days; each trial started when it was audible that the elephants began blowing and ended when they finally got the food or gave up. Many other factors played a role in this experiment such as the position and shape of the elephant trunks, the frequency and duration of blowing, and the ability to track the movement of food across the area.

The scientist’s research concluded that on average, it took 3 blasts of air for an elephant to obtain inaccessible food and was less likely to use this technique if the food was nearby. Mineko was the dominant female who was much more skilled at altering the position of her trunk to aim more specifically at the food to push it in the correct direction. This particular behavior has brought up discussion of whether an elephant’s breath can be defined as a “tool” or not; similar to how chimpanzees use sticks to catch ants. It’s been concluded that this study creates a new possibility to rethink the term “tool” and to possibly redefine it. For this behavior to be defined as a “tool,” it shouldn’t solely be debated as whether it’s a physical object or not, but more of how it is a physiological process that promotes problem-solving. I thought this new finding was very interesting because I was unaware at how proficient an elephant can be with its breath. Furthermore, I love how this study promoted discussion on a different topic: what can be defined as a “tool” for animals nowadays. Do you think an elephant’s breath can be referred to as a “tool?” Please share your thoughts! In my opinion, I think it can definitely be referred to as a tool because it aids in carrying out a particular function. If only humans had this type of tool… we wouldn’t have to awkwardly reach across the dinner table ever again!

The original article can be found here.

For more information about the study, check out this article and video: Elephants Use Their Trunks as Leaf-Blowers to Reach for Food.

Wanna socialize………with an Elephant?

Us humans aren’t the only creatures of “socializing.” There is a young elephant at the Everland zoo in South Korea that can speak Korean!

USA today published a recent article about a young elephant that can imitate human words like a parrot. The Asian elephant can speak five Korean words: “annyong” (“hello”), “anja” (“sit down”), “aniya” (“no”), “nuo” (“lie down”) and “choah” (“good”). According to Koshik’s trainers, he learned to imitate  human words in 2004.

Angel Stoeger, leader of this study, says that “Koshik is capable of matching both pitch and timber patterns.” So in actuality, the elephant is just imitating the noises, not really “speaking” words. But who cares? That is still awesome!

In the study, Stoeger and her colleagues had 16 native Korean speakers listen to 47 recordings of the elephant’s “mimics” without informing them of who Koshik was and his abilities. The speakers confirmed the mimics as proper language – this “largely confirmed” the claims of his trainers, says the study.

Koshik was born in captivity in 1990 and moved to Everland in 1993, living with two female Asian elephants until he was 5 years old. Koshik was the only elephant in Everland from 1995 to 2002. He was trained to obey commands in Korean. People were his only social contacts in those years, and the researchers suspect this led to his remarkable imitative powers.

So how does Koshik do it? As you can see in the video, he sticks his trunk in his mouth ,thus allowing him to create different sounds and tones. According to researcher Liz Rowland of Cornell, “[it] is a first for elephants using their trunk[s] to modify the sound.”

The researchers believe the reason for animals such as Koshik to exercise imitative vocalization “might be to cement social bonds and, in unusual cases, social bonds across species.”

 

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