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2014

  • September

  • August

    • A northern pine snake near the edge of an asphalt road in New Jersey. Credit: Dane Ward

      Roadside Research from the New Jersey Pinelands and Coast to Coast

      August 12, 2014

      Three doctoral students from Drexel's Laboratory of Pinelands Research are presenting their work with northern pine snakes and the Pine Barrens gentian at the Ecological Society of America meeting, after doing some new roadside research during their cross-country drive to Sacramento.

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  • June

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

      Drexel Scientists Find Common Sweetener is a Safe Insecticide

      June 04, 2014

      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 Drosophila melanogaster fruit flies in a dose-dependent manner in the Drexel team’s study, published in PLOS ONE. The flies consumed erythritol when sugar was available and even seemed to prefer it. No other sweeteners tested had these toxic effects.

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  • May

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

      A Tiny, Toothy Catfish with Bulldog Snout Defies Classification

      May 13, 2014

      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.

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  • January

    • GPS Traffic Maps for Leatherback Turtles Show Hotspots to Prevent Accidental Fishing Deaths

      January 08, 2014

      The leatherback turtle in the Pacific Ocean is one of the most endangered animals in the world. Its population has declined by more than 90 percent since 1980. One of the greatest sources of mortality is industrial longlines that set thousands of hooks in the ocean to catch fish, but sometimes catch sea turtles as well. Using modern GPS technology, researchers are now able to predict where fisheries and turtles will interact and to reduce the unwanted capture of turtles by fishermen.

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    • Paperwasps in Different Castes Develop Different-Sized Sensory Brain Structures

      January 06, 2014

      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.

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