Metamorphosis is a biologically regulated developmental process in which an organism undergoes a marked, genetically programmed reorganization of morphology, physiology, and often ecology between early and adult life stages. It is classically characterized in holometabolous insects, amphibians, and some marine invertebrates, where endocrine signaling (e.g., ecdysteroids, juvenile hormone, thyroid hormones) orchestrates cell proliferation, apoptosis, tissue remodeling, and organ differentiation. Metamorphosis often separates larval and adult niches, optimizing resource use and dispersal. At the research level, it serves as a model for studying hormone-driven gene regulatory networks, developmental timing, phenotypic plasticity, and evolutionary transitions between life-history strategies.
In the animal kingdom, only those that adapt to their environment survive. This adaptation takes a wide range of forms, from invisible internal shifts in gene expression to dramatic anatomical changes, such as tadpoles growing ...
Plants & Animals
Aug 7, 2026
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Minor cuts and scrapes usually heal in time, but losing a finger or a whole limb? For most vertebrates, that's a done deal. Unless, of course, you've got the self-healing machinery of an axolotl.
Molecular & Computational biology
Jul 28, 2026
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The mystery of why some amphibian populations recover following outbreaks of a deadly fungus has been solved in a new study led by University College London (UCL), ZSL and Imperial College London.
Plants & Animals
Jul 14, 2026
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Honey bee larvae lack the sophisticated olfactory capabilities of adult honey bees, a new study finds. Scientists point to this temporary loss of function as a side effect of the nurse bees' heroic level of brood care, calling ...
Plants & Animals
Jul 14, 2026
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Scientists have long posited that the earliest water animals to transition to land had amphibious tadpole features, going through a metamorphosis akin to that of today's frogs.
Paleontology & Fossils
Jul 5, 2026
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Superworms, a mealworm-like form of beetle larva commonly used as pet food, are efficient cleaners of skeletons, according to a study published in PLOS One by Fatemeh Rastekar of Ferdowsi University of Mashhad, Iran, and ...
Plants & Animals
Jul 1, 2026
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Researchers have identified "DNA switches" that become active as honeybee larvae grow into worker bees, offering new insight into the development of these important pollinators and the ecosystems they support.
Ecology
Jun 23, 2026
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Life on our planet began in the water. Eventually, one branch of the fish family tree developed legs and came up on land. These early four-legged animals, the tetrapods, were the forebears of today's mammals, birds, reptiles ...
Evolution
Jun 18, 2026
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Behind the scenes at Brookfield Zoo Chicago, a record-breaking conservation milestone is helping secure the future of one of the world's most imperiled amphibians. Months of meticulous care and coordination enabled Brookfield ...
Plants & Animals
May 20, 2026
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Metamorphosis, that profound transformation enabling certain animals to shift between habitats such as from an aquatic to a terrestrial environment, is generally viewed in terms of its benefits. A team of researchers from ...
Plants & Animals
May 8, 2026
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