Study finds that insect shows promise as a sustainable protein source

With global food demands rising at an alarming rate, a study led by scientists at Indiana University—Purdue University Indianapolis has found new evidence that a previously overlooked insect, the yellow mealworm, shows promise as an alternative protein source.

The yellow mealworm Tenebrio molitor. Scientists found the insect could serve as a protein source. Photo: Ti Eriksson, Beta Hatch

The research is based on a new analysis of the genome of the mealworm species Tenebrio molitor, led by Christine Picard of IUPUI. "Human populations are continuing to increase, and the stress on protein production is increasing at an unsustainable rate," said Picard.

Picard and her team sequenced the yellow mealworm's genome. The results will help those hoping to use the yellow mealworm for mass production and consumption.

The research found that the yellow mealworm -- historically a pest -- can benefit a range of agricultural applications. Not only can it be used as an alternative source of protein for animals, but its waste is ideal as an organic fertilizer, the scientists say.

New technology used in the study integrates the best of two sequencing methods to produce a reliable genome sequence. "Insect genomes are challenging, and the longer the sequence of DNA you can generate, the better genome you can assemble," said Picard.

Picard added that the mealworms have a variety of uses.

"Mealworms, being insects, are part of the diets of many organisms," she said. "Fish enjoy mealworms, for example. They could also be useful in the pet food industry as an alternative protein source, and chickens like insects -- and maybe one day humans, too, because mealworms are an alternative source of protein."

To harness information for the potential commercialization of these insects, the researchers' next step is to look at what governs the biological processes of yellow mealworms. (National Science Foundation)

YOU MAY ALSO LIKE

Solving a Dust Bowl mystery

Grasses common in the cooler north began taking over the hot, dry southern plains.

Why Is Asteroid Bennu Ejecting Particles Into Space?

The asteroid shows some surprising activity on its surface, and scientists are beginning to understand what might be causing it.

Research links ancient Southeast Asia megadrought to drying in Africa

Evidence found in caves in Laos helps tell a story about a connection between the end of the Green Sahara, when heavily vegetated Northern Africa became a hyper-arid landscape, and a previously unknown megadrought that crippled Southeast Asia 4,000 to 5,000 years ago.

Hints of life discovered on Venus

A UK-led team of astronomers has discovered a rare molecule – phosphine – in the clouds of Venus, pointing to the possibility of extra-terrestrial ‘aerial’ life.

New tool for identifying endangered corals could help conservation efforts

Chip allows researchers to identify corals and symbiotic algae that live inside coral.

Human/mechanical powered plasma: Researchers help create the future

Low-temperature plasma device may lead to more efficient engines, use in field medicine and beyond.