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Mass animal die-offs may be increasing, new research shows

By Guest PostJanuary 20, 2015Naturebiocompatible gel, biopesticide, birds, cancer link, daniel munro, disease carrying mosquitoes, facebook status, fishes, frequency, kuenstliche fluesse, marine invertebrates, mona singh, negativity online, oleksandra shumilova, sea of mutations, stephen rains, wassertransfer megaprojekte

Mass die-offs of animals may be increasing in frequency and — for birds, fishes, and marine invertebrates — in severity as well, according to a study of 727 mass mortality events since 1940.

Despite the ecological importance of individual mass mortality events, in which a larger than normal number of individuals die within a population, little research has been conducted on patterns across mass mortality events. The new study will help researchers better assess trends in mass mortality events and their causes, according to the authors of the paper in the Jan. 12 issue of the Proceedings of the National Academy of Sciences. (more…)

Environmental Issues: How True the Climate Changes Affecting Biodiversity

By Guest PostDecember 12, 2012Environmentalgae, annual migratory cycle, biodiversity, biological behavior, biosphere, brianne, caribbean species, changes in climate, changing climate, changing temperatures, climate changes, colonization, corals, current scenario, eccentric rainfall, ecology, ecosystem, elkhorn, environmental conditions, erratic courses, evolution, fishes, fossilized remains, global warming, great barrier reef, mammals, melting, melting of permafrost, migration of animals, migratory birds, oceans, offsprings, penguins, permafrost, phytoplankton, polar bears, polar regions, pollen distribution, regal cigs, satellite pictures, species, staghorn corals, temperature, underwater life, warm air currents, zooplanktons

A changing climate has implications on biodiversity without any doubt. Species in the past have been sensitive to changes in the climate; that has been proved time and again by the fossilized remains and pollen distribution studies. It has been seen or can be concluded safely that climate changes have led to extinction of species in one area and colonization in another.

It is improbable that all species can or will be able to adapt to changing conditions specially the sudden changes. This leads to impact in ecosystem dynamics and also on community composition. (more…)

Yale Study Reveals New Family Tree for Ray-Finned Fish

By Guest PostAugust 7, 2012Natureage of fishes, alex dornburg, bass, bonefishes, bonytongue fish, devonian period, dinosaurs, eels, evolutionary birthday, family tree, fishes, fossil record, freshwater, genetic analysis, kristen l kuhn, lineages of fish, mammals, ray finned fish, ron i eytan, salmon, second age, teleost fish, teleost lineages, teleosts, thomas near, tropical, tuna, yale university

The most common lineages of fish found today in oceans, lakes, and rivers evolved about the same time as mammals and birds, a new Yale University-led study shows.

The comparative genetic analysis of more than 200 fish species, reported the week of Aug. 6 in the Proceedings of the National Academy of Sciences, gave an earlier than expected evolutionary birthday to well-known teleost — or ray-finned — fish such as salmon, bass, or tuna.

The analysis also shows that the very earliest lineages of living teleost fish were eels and bonefishes, not tropical freshwater bonytongue fish as some scientists had proposed. (more…)

Yale Research Reveals Ancient Moth’s True Colors

By Guest PostNovember 15, 2011Nature, Scienceanatomical details, birds, camouflage, chemical pigments, colors of ancient beetles, derek e g briggs, electron microscopy, feathered dinosaur, fishes, fossils from germany, Frankfurt, function and evolution, heeso noh, hui cao, insects, long extinct creatures, maria e mcnamara, messel oil shale pit, national science foundation, organisms, original colors of an ancient moth, peabody museum of natural history, structural colors, university college dublin, yale paleontologist, yale university

A research team led by Yale University scientists has for the first time determined the original colors of an ancient moth, based on nearly 50 million-year-old fossils from Germany.

The discovery could help scientists learn the colors of a wide variety of long-extinct creatures, including birds, fishes, and other insects, and shed light on color’s function and evolution. (more…)

Tag Archives: fishes

Mass animal die-offs may be increasing, new research shows

Environmental Issues: How True the Climate Changes Affecting Biodiversity

Yale Study Reveals New Family Tree for Ray-Finned Fish

Yale Research Reveals Ancient Moth’s True Colors