• Exposure of zebrafish larvae to sublethal levels of exogenous H(2)O(2) promoted growth of severed axons in the absence of keratinocyte injury, and inhibiting H(2)O(2) production blocked the axon growth-promoting effects of fin amputation and keratinocyte ablation. (nih.gov)
  • Uninjured larvae at 6 dpf were compared to amputated larvae at 3 dpa (6 dpf) in their ability to escape in response to touch stimuli at the caudal fin tip (11/12 uninjured fish escaped, 13/14 injured/regenerated fish escaped). (nih.gov)
  • Motile larvae help to disseminate sessile, or sedentary, animals such as sponges sponge, common name for members of the aquatic animal phylum Porifera, and for the dried, processed skeletons of certain species used to hold water. (thefreedictionary.com)
  • Vertebrate classes Fish may have evolved from an animal similar to a coral-like sea squirt (a tunicate), whose larvae resemble early fish in important ways. (wikipedia.org)
  • The larval development and formation of the skeleton that support the median fins in adults result in pterygiophores. (wikipedia.org)
  • Eels lack the hind pair of fins, adapting them for wriggling in the mud and through the crevices of reefs and rocky shores. (thefreedictionary.com)
  • Ten years ago, University of Chicago organismal biologist Neil Shubin discovered the fossils of the 375-million-year-old Tiktaalik roseae, a water-to-land transitional fish that had limb-like fins. (washingtonpost.com)
  • The list of animals forbidden by kashrut is more restrictive, as kashrut requires that, to be kosher, mammals must chew cud and must have cloven hooves. (wikipedia.org)
  • This property is expected to have fundamental effects on the hydrodynamic performance of the fins in generating propulsion force during cruising, bursting and maneuvering. (biologists.org)
  • But when you look at a modern fish, it's hard to imagine just how how fins like theirs evolved into the hands, wrists and fingers that you and any other four-limbed animal on earth has. (washingtonpost.com)
  • Researchers examined the switches controlling genes related to the development of fins in the gar fish and hands in mice. (washingtonpost.com)
  • Sensory reinnervation of regenerated fins was functional, since 6 dpf fish with regenerated fins responded to touch at the tip of the tail as often as uninjured control fish (Figure 2B). (nih.gov)
  • In some fish, e.g., the eel, a single fin extends from the back, around the tail, and along the ventral surface. (thefreedictionary.com)
  • While studying 380 million year old rocks in Ellesmere Island, at a latitude of 80 North, I was uncovering one of the key transitional stages in the shift from fish to land living animal. (edge.org)
  • Everybody knows that fish swim with fins and animals that walk on land have legs. (edge.org)
  • This architecture enables a fish to control the motion of each individual ray and thus achieve three-dimensional fin deformations. (biologists.org)
  • The basking shark has long been a commercially important fish, as a source of food, shark fin, animal feed, and shark liver oil. (wikipedia.org)
  • Gelatin is only permissible if it comes from a permissible animal (usually kosher gelatin comes from the bones of kosher fish,[citation needed] or is a vegan substitute, such as agar). (wikipedia.org)
  • In these types of fish, the fins are made of 2 main components. (wikipedia.org)
  • Examples of the animal types represented are turtles, fish, hippopotami, crocodiles, ducks, and elephants Many examples feature shell-inlays representing the eyes of the animal. (wikipedia.org)
  • Other details of an animal, such as the fins on a fish, were also commonly depicted with incisions. (wikipedia.org)
  • The first ancestors of fish, or animals that were probably closely related to fish, were Pikaia, Haikouichthys and Myllokunmingia. (wikipedia.org)
  • Tropical fish, nonhuman primates, and other animals are also part of the illicit pet trade. (wikipedia.org)
  • The animal swims by undulating the fin from side to side. (wikipedia.org)
  • 2015) The Disturbing Truth Behind Your Swim With The Dolphins The Dodo, For the Love of Animals Apr 17, 2015 Swimming with dolphins: a phenomenological exploration of tourist recollections, International Journal of Tourism Research The trouble with Dolphin swims: why swim-with-dolphin programs have some folks making waves, Animals Should You Swim With This Dolphin? (wikipedia.org)
  • We unlock our history as we understand more about our DNA, as we compare ourselves to animals living and dead, and as we discover new fossils from around the world. (edge.org)
  • Once thought to be closely related to the ancestor of all vertebrates, it has for that reason received particular attention among the multitude of animal fossils found in the famous Burgess Shale in the mountains of British Columbia, Canada. (wikipedia.org)
  • Currently, only whole body fossils of Archipelepis are known: these fossils show that archipelepids were tadpole-like animals with no fins aside from a forked caudal fin. (wikipedia.org)
  • Chaetognatha kētôgnăth´ə [ key ] , phylum of predominantly pelagic marine animals commonly known as arrowworms. (infoplease.com)
  • A) Quantification of the density of axons within regenerated fins as measured by pixel density in a 50 µm2 area (white box) at the distal fin tip. (nih.gov)
  • Some fossil agnathans, such as osteostracans and pituriaspids, did have paired fins, a trait inherited in their jawed descendants. (wikipedia.org)
  • Wildlife biologists often use the distinctive nicks and wear patterns which develop on the dorsal fins of large cetaceans to identify individuals in the field. (wikipedia.org)
  • Photography allows researchers to identify individual animals with distinctive fin shapes, color patterns or injuries. (japantimes.co.jp)
  • Even during my brief stay in Gerlache Strait, I was able to recognize the same three pod members out of more than 20 animals due to their distinctive dorsal fins: One was missing the tip of the fin, one had lost most of the fin and one had a nick out of the rear edge. (japantimes.co.jp)
  • During fin regeneration, the arteries and veins form a net-like vasculature called the vascular plexus, and this plexus undergoes remodeling to form a new artery and two flanking veins. (mpg.de)
  • Fin amputation strongly promoted the regeneration of nearby sensory axons, an effect that could be mimicked by ablating a few keratinocytes anywhere in the body. (nih.gov)
  • their large diameter (due to lack of myelination ) makes them relatively easy to study compared with other animals. (wikipedia.org)
  • In behaviour, the great white is an active predator of large animals and not a filter feeder. (wikipedia.org)
  • On the opposite side of the animal to the shell is a large rounded swimming fin with a sucker. (wikipedia.org)
  • Gambo" is the name given to a carcass of an unidentified large marine animal that was reportedly washed up on Bungalow Beach in The Gambia. (wikipedia.org)
  • Though criticism and more strict animal welfare laws have forced many dolphinariums to close their doors, hundreds still exist around the world attracting a large number of visitors. (wikipedia.org)
  • These exclusively marine animals are characterized by bilateral body symmetry , a prominent head, and a set of arms or tentacles ( muscular hydrostats ) modified from the primitive molluscan foot. (wikipedia.org)
  • Unfortunately, the following day one of the animals was found dead on a beach in Truro, we are still awaiting test results to try to figure out what may have caused this animal to re-strand. (ifaw.org)
  • Deimatic display occurs in widely separated groups of animals, including moths, butterflies, mantises and phasmids among the insects. (wikipedia.org)
  • It has a fin, but interestingly the fin has bones within it that are similar to mammalian tetrapods. (wikipedia.org)
  • Rather, it appears to be a result of the early evolution from a limb with a fin rather than digits. (wikipedia.org)
  • Utatsusaurus had small fins, with five digits. (wikipedia.org)
  • Elise Walters '16 (Hunsaker Student Science Researcher) focused her capstone project on identifying bottlenose dolphins by their dorsal fins to estimate their number locally. (redlands.edu)
  • These sightings will inevitably play an important role in improving our knowledge of these animals and significantly aiding in the rescue of stranded dolphins in the future! (ifaw.org)
  • Foster spoke to CNN by telephone from a sailboat in the Aegean Sea, where he and his team have been tracking the animals' progress with the help of transmitters attached to the dolphins' dorsal fins. (cnn.com)
  • These animals haven't been in captivity as long as Keiko. (cnn.com)
  • as long as the shochet does not have a lengthy pause, interrupt, or otherwise lose concentration, this blessing covers all the animals slaughtered in that period. (wikipedia.org)
  • as long as it was slaughtered and prepared according to the rules of halal, the entire animal, with the exception of blood (Qur'an 2:173), is fit for consumption by Muslims. (wikipedia.org)
  • The tail had a long low fin, suggesting that the animal swam by undulation, rather than using its paddles and tail. (wikipedia.org)
  • Interestingly, both times this animal has been sighted, there has been no sign of the other animals that originally stranded and were released on the same day, giving us insight in the group dynamics of these animals which still remains a mystery! (ifaw.org)
  • The animal counts with a single small humeral spot, which is sometimes obscured by the midlateral stripe mentioned before. (wikipedia.org)
  • The previously described stripe extends dorsally and ventrally close to the caudal fin base, forming a small caudal spot. (wikipedia.org)
  • In the heterocercal model, the fin also generates a small lifting force, which may be important in vertical maneuvers. (biologists.org)
  • Kardong, 1998 ), a fin ray contains a central bundle of collagen surrounded by small segmented bony elements called hemitrichs. (biologists.org)
  • Cut a slit in a wet t-shirt and ease the fin, fluke, or flipper through the slit so that the fabric rests on the animal's body, not the fin. (wikihow.com)
  • Thus some animals such as the camel are halal, but not kosher. (wikipedia.org)
  • In Judaism only one kind of Rabbi, known as the shochet, may slaughter Kosher animals. (wikipedia.org)
  • However, kashrut prohibits eating the chelev (certain types of fat) and gid hanosheh (the sciatic nerve), and thus the hindquarters of a kosher animal must undergo a process called nikkur (or, in Yiddish, traibering) in order to be fit for consumption by Jews. (wikipedia.org)
  • Members of terrorist organizations and criminal organizations illicitly traffic in hundreds of millions of plants and animals to fund buy weapons, finance civil conflicts, and launder money from illicit sources. (wikipedia.org)
  • Now a recent study has shown that the group of cells that form on the stump are actually composed of nine different cell types and, as the new fin develops, each cell-type gives rise to more cells of the same type. (understandinganimalresearch.org.uk)
  • Reports of released animals are incredibly valuable, it validates that we have made good decisions in the field and that we are doing the right thing. (ifaw.org)
  • The term zoomorphic, or animal style, refers to the palette being made in the shape of the animal portrayed. (wikipedia.org)
  • however, as a standard wildlife-management practice for "harvestable" animals, the Canadian government determined that a census should be done. (wikipedia.org)
  • Wildlife smuggling or trafficking involves the illegal gathering, transportation, and distribution of animals and their derivatives. (wikipedia.org)
  • With a notochord and paired muscle blocks, the lancelet and Pikaia belong to the chordate group of animals from which the vertebrates descended. (wikipedia.org)