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All News tagged "biology"

wasp colony

Do Insect Societies Share Brain Power?

A new Drexel study suggests that social behavior evolved very differently in the brains of social insects than in vertebrate animals such as mammals, birds and fish.

swarm of army ants

Underground Ants Can't Take the Heat

A new Drexel study shows underground species of army ants are much less tolerant of high temperatures than their aboveground relatives—and that could mean  climate change models lack a key element of how animal physiology could affect responses to changing environments.
Teacher naturalist Caitlin Halligan at Academy of Natural Sciences' making a face as she presents on a skunk's scent to a group of children.

Learning from the 'Grossness' of Animals

Let’s face it: Animals can be gross. But what can we learn from some of the things that we find disgusting or weird? A new exhibit at the Academy of Natural Sciences shows us.
African Pygmy Kingfisher (Ispidina picta) photographed in Vwaza Wildlife Reserve, Malawi. Credit: Jason D. Weckstein

Study of African Birds Reveals Hotbed of Malaria Parasite Diversity

A new study published this week in the journal PLOS ONE explores the scope of malaria parasite diversity in southeast African birds, and provides insight into how lifestyle characteristics of birds can influence their association with different parasite genera.
A Nigeria-Cameroon chimp rescued from illegal animal trafficking who now lives at the Limbe Wildlife Center in Cameroon. Credit Paul Sesink Clee

Studies of Africa's Most Endangered Chimpanzees Show Complex Evolutionary Past, Perilous Future

A Drexel-led team's complementary analyses of population genetics, geographical distribution and habitat use paint a new picture of the evolutionary past and potentially bleak future of the Nigeria-Cameroon Chimpanzee, already the most endangered chimp subspecies.

Drexel Team Unveils Supermassive Dinosaur Dreadnoughtus

A Drexel-led team has described a new dinosaur species with the most complete skeleton ever found of one of the largest animals to ever walk the Earth. At 85 feet (26 m) long and weighing about 65 tons (59,300 kg) in life, Dreadnoughtus schrani is the largest land animal for which a body mass can be accurately calculated.

In the Drexel team's experiments, flies died after an average of 5.8 days when consuming a diet of the sweetener erythritol.

You Catch (and Kill) More Flies with This Sweetener

In a study that began as a sixth-grade science fair project, researchers at Drexel University have found that a popular non-nutritive sweetener, erythritol, may be an effective and human-safe insecticide. Erythritol, the main component of the sweetener Truvia®, was toxic to fruit flies in the Drexel team’s study.

A high-resolution digital image of the face of Kryptoglanis shajii

A Tiny, Toothy Catfish with Bulldog Snout Defies Classification

Kryptoglanis shajii is a strange fish — and the closer scientists look, the stranger it gets. This small subterranean catfish sees the light of day and human observers only rarely, when it turns up in springs, wells and flooded rice paddies in the Western Ghats mountain region of Kerala, India. Scientists at the Academy of Natural Sciences of Drexel University have recently provided a detailed description of this fish's bizarre bone structures.

Paperwasps in Different Castes Develop Different-Sized Sensory Brain Structures

A queen in a paperwasp colony largely stays in the dark. The worker wasps, who fly outside to seek food and building materials, see much more of the world around them. A new study led by Drexel professor Sean O'Donnell, PhD, indicates that the brain regions involved in sensory perception also develop differently in these castes, according to the different behavioral reliance on the senses.
germ vision

'Don’t Wash Your Chicken!' Video Vignettes Make Cooking Safer

Drexel food safety researchers have helped develop a new educational campaign to raise awareness that washing raw poultry prior to cooking risks spreading bacteria, without any benefit of removing or killing them.

Mitchell D'Rozario

Grad Student Helps Peers Strengthen Teaching Skills

When grad student Mitchell D'Rozario noticed his fellow teaching assistants struggling to be prepared to teach classes, he created workshops to help them strengthen their skills.

Victor Fiore

Biology Major Sinks Teeth Into Co-op Experience

Some students are lucky if they can work part time or full time at their co-op once it is finished, but biology major Victor Fiore is planning on spending all three co-ops, as well as the time in between, as a dental intern.