Tag Archives: invasion

Florida Lizards Evolve Rapidly, Within 15 Years and 20 Generations

AUSTIN, Texas — Scientists working on islands in Florida have documented the rapid evolution of a native lizard species — in as little as 15 years — as a result of pressure from an invading lizard species, introduced from Cuba.

After contact with the invasive species, the native lizards began perching higher in trees, and, generation after generation, their feet evolved to become better at gripping the thinner, smoother branches found higher up. (more…)

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Useful pesticides

We all know about the harm that can be caused by pesticides. While being misused, pesticides can have a negative impact on the plants, animals and human health. Animals that eat the treated with pesticides plants, have a small amount of pesticides left in their organisms. Being a food to a human, such animals represent a certain risk to human health. Not only the meat can be intoxicated with pesticides but also eggs, milk and the further products of milk production.

While working with pesticides, people accumulate them in the organism, what, in turn, may lead to the chronic diseases. Human needs have increased immensely, and people nowadays can’t eliminate the use of pesticides. (more…)

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Invasion in the Desert: Why Some Plant Species are Survivors

Max Li’s research could inform policies to promote sustainable native environments and curb the invasion of alien plant species.

Max Li, a University of Arizona doctoral student in the Department of Ecology and Evolutionary Biology, is studying mechanisms that determine how competing desert plants can coexist with each other and what factors can cause the destruction of this stable coexistence.

His research could help inform policies to curb the spread of invasive species. (more…)

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Invasive crabs help Cape Cod marshes

Ecologists are wary of non-native species, but along the shores of Cape Cod where grass-eating crabs have been running amok and destroying the marsh, an invasion of a predatory green crabs has helped turn back the tide in favor of the grass. The counter-intuitive conclusions appear in a new paper in the journal Ecology.

PROVIDENCE, R.I. [Brown University] — Long vilified, invasive species can sometimes become an ecosystem asset. New Brown University research published online in the journal Ecology reports exactly such a situation in the distressed salt marshes of Cape Cod. There, the invasive green crab Carcinus maenas is helping to restore the marsh by driving away the Sesarma reticulatum crabs that have been depleting the marsh grasses. (more…)

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Researchers Find Potential Cancer Roadblock

EAST LANSING, Mich. — By identifying a key protein that tells certain breast cancer cells when and how to move, researchers at Michigan State University hope to better understand the process by which breast cancer spreads, or metastasizes.

When breast cancer metastasizes, cancer cells break away from a primary tumor and move to other organs in the body, including the lungs, liver and brain. In work published recently in the journal Cancer Research, MSU researchers Kathy Gallo and Jian Chen show a protein called MLK3 (mixed lineage kinase 3) is a critical driver of breast cancer cell migration and invasion. (more…)

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