145 million years ago, in the Cretaceous, the air was warm and the seas were high and rum flowed freely. On land, mammals were oppressed under dinosaur Republican rule. Massive reptiles and ammonites, long since extinct, dominated the oceans. Under the reign of these giants, the lizardfishes were mere fledglings. Today, the 256 known lizardfishes . . . → Read More: Of eyes and sex in lizardfishes
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By Dr. M, on  October 20th, 2010  5 comments  Adaptations, Biology, Evolution, Fish, Mating & Reproduction, Organisms, Paleobiology  adaptation, Cretaceous, deep sea, evolution, hermaphrodite, Jurassic, lizardfish By Dr. M, on September 6th, 2010 2 comments Adaptations, Cephalopods, Ecology, Evolution, Mating & Reproduction, Organisms acoustic, adaptation, Cephalopod, ear, echinoderms, evolution, Gastropod, Geerat Vermeij, Mollusc, Morphology, Predation, RB Editor's Selection, reprodcution, sensory, shell, Sound Why don’t animal’s use wheels in locomotion? Why aren’t blue whales bigger? Why are there no freshwater starfish? Why are there no tree dwelling cephalopods? Why can’t my dog make a decent cocktail? These are the kinds of questions that intrigue me. Apparently I am not alone. Geerat Vermeij’s new paper “Sound reasons for silence: . . . → Read More: If Molluscs Could Communicate What Would They Say?
By Kevin Zelnio, on June 7th, 2010 8 comments New Research, Organisms, Plankton Best of Zelnio, Cambrian, Chaetognath, Current Biology, Deuterostome, Ecdysozoa, evolution, fossil, molecular phylogeny, Phylogenetics, Platyhelminthes, Priapulida, Protostome, RB Editor's Selection Lynn Margulis classified the Chaetognaths, known as arrow worms, as deuterostomes. Deuterostomy is characterized by several developmental characteristics including radial, indeterminate cleavage, a posterior position of the blastopore (deuterostomy=”second mouth”), enterocoelous coelom formation and a tripartite adult body plan with a post-anal tail. At least this is what I was taught “growing up”. Three . . . → Read More: What in Darwin’s Name Are Chaetognaths?!
By Dr. M, on April 13th, 2010 One comment Carnivals & Link Love, Ecology, Education, Giant Isopod, New Research, Organisms, Reviews, Scientist!, Seamount American Scientist, bivalve, deep sea, Ecology, evolution, Gastropod, Giant Isopod, Hydrothermal Vent, island rule, isopocalypse, MBARI, Monterey Canyan, National Geographic, NESCent, New Species, Organisms, Seamount, Sigma Xi, Snail, Southern Fried Science, twitter A potential new species of nudibranch (white box) on a bubblegum coral You might have noticed that my posting frequency is down recently. Why? 1. Kevin Z convinced me to start Tweeting. There seems to be an inverse relationship to my writing for DSN and posting Tweets. Previous attempts to integrate our Twitter content into . . . → Read More: What’s New With the Dr. M and the Oceans?
By Kevin Zelnio, on March 19th, 2010 Leave a comment Adaptations, Fish, Mating & Reproduction, New Research, Pictures and Movies Brooding, evolution, Henry Gee, Nature, Parental Care, Pipefish, seahorse Nicely narrated by Henry Gee! See the paper here: Paczolt KA, Jones AG (2010) Post-copulatory sexual selection and sexual conflict in the evolution of male pregnancy. Nature 464:401-404. doi:10.1038/nature08861 By Kevin Zelnio, on February 16th, 2010 14 comments Mating & Reproduction, Organisms, Social Sciences Archetype, Barnacle, Best of Zelnio, Charles Darwin, Cirripedes, Cryptophialus, Darwin Day, Erasmus Darwin, evolution, Hermaphroditism, HMS Beagle, Homology, John Hooker, Lamarck, Mr. Arthrobalanus, On the Origin of Species, Richard Owen, Robert Chambers, taxonomy, Vestiges, Zoonomia This awesome design is a t-shirt you can buy from Zazzle!! (click on image) As part of Darwin Day on Friday, I gave a brief talk at Duke Marine Lab during happy hour about Darwin and his beloved barnacles. I was going to post the slides but didn’t think they did the 201 year legacy . . . → Read More: Ex Omnia Conchis: Darwin and His Beloved Barnacles
By Kevin Zelnio, on February 3rd, 2010 3 comments Fish, New Research, Organisms Anguilla, Best of Zelnio, Eel, evolution, Freshwater Eel, phylogenetic Larval eel jaw diversity from Michael Miller 2009 ASMB 2(4): 1-94. There are all sort of eels in this world. Big ones, small ones, gulper eels, morays. But the most tastiest are the Japanese freshwater eel. Nothing says Ohayo Gozaimasu like fresh eel sushi topped with a mountain of pickled ginger and lightly spackled . . . → Read More: Deep-Water Origin of Freshwater Eels
By Dr. M, on November 30th, 2009 8 comments Adaptations, Biology, Mating & Reproduction, New Research allometric, Blue Whale, body size, constraints, evolution, feeding, isometric, lunge feeding, mass, RB Editor's Selection, whales The largest, Blue Whale and smallest, Hector Dolphin, cetaceans. From wikimedia commons The question is not why are whales big but why are whales not bigger? The blue whales reached weights of 150 tons prewhaling. To appreciate how massive a blue whale is, consider it would take 15 school buses, around 10 tons in weight . . . → Read More: Why Are There No Super Whales?
By Dr. M, on November 9th, 2009 5 comments Carnivals & Link Love, Conferences Carnival, Contest, evolution, NESCent, ScienceOnline 2010, travel award It’s just a few short weeks until the final deadline for your submission! To recap, the National Evolutionary Synthesis Center is offering two $750 travel awards for bloggers with the best posts covering new and emerging evolutionary science. To apply for an award, writers should submit a blog post that highlights current or emerging evolutionary . . . → Read More: ScienceOnline 2010 Travel Awards: The Entries So Far
By Dr. M, on October 8th, 2009 Leave a comment Adaptations, Organisms, Pictures and Movies Adaptations, evolution, excrement, polar bears, poo …removal of waste represents over 550 million years of evolutionary adaptation to solve one of life’s most basic problems. |
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