The former include a dorsal fin in the midline of the back, an anal fin along the underside and a caudal fin at the rear end of the fish. (jrank.org)
caudal fin spotted or clear, other fins clear (Ref. 42110 ). (mnhn.fr)
They have a paired caudal fin, typically short and held stiffly. (aquariumnexus.com)
Both anal and dorsal fins are slim and lengthy and that they stop close to caudal fin. (eel2.com)
The caudal fin is combined and looks like magnificently linked silk threads. (fishkeepingfolks.com)
Recent studies have illustrated that similar to adult zebrafish, early life stage larvae also possess the ability to regenerate the caudal fin. (oregonstate.edu)
A comparative microarray analysis was used to determine the degree of conservation in gene expression among the regenerating adult caudal fin, adult heart, and larval fin. (oregonstate.edu)
Anal5
In fast-swimming species such as tuna or mackerel , the dorsal and anal fins form sharp thin keels that offer little resistance to water flow. (jrank.org)
Anal fin base equidistant from origin of pelvic and root of caudal (Ref. 42110 ), or a little nearer caudal (Ref. 11970 , 42110 ). (mnhn.fr)
Dark spots at bases of pectoral, ventral and anal fins (Ref. 13721 ), but no dark spot at base of pelvic fins of type specimens (Ref. 7248 , 52193 ). (mnhn.fr)
As a rule anal, dorsal and pectoral fins have pink edges. (eel2.com)
Blastema cells are not derived from stem cells but behave as such, because they are slow-cycling and are thought to provide rapidly proliferating daughter cells that drive regenerative outgrowth. (elsevierpure.com)
Pelvic2
Dorsal fin origin equidistant from tip of snout and base of caudal (Ref. 11970 , 13721 , 42110 ) or nearer mid-base of caudal than tip of snout (Ref. 7248 , 52193 ), above (Ref. 42110 ) or immediately behind base of pelvic (Ref. 11970 , 13721 , 42110 ). (mnhn.fr)
Pelvic fin as long as or a little shorter than pectoral (Ref. 42110 ). (mnhn.fr)
Dorsal fins1
Southern right whales do not have any dorsal fins, nor do they have the grooved throat that is typical of the balaenopterids. (australiaforeveryone.com.au)
Fleshy1
When seeking out meals hearthplace eel feels the lowest with a touchy fleshy outgrowth on its snout. (eel2.com)
They found many fossils, but one that changed his thinking was a fin of sauripterus, with fin rays and a core of tetrapod-like limbs. (freethoughtblogs.com)
In 1878, influential German anatomist Karl Gegenbaur presented the theory that paired fins and eventually limbs evolved from a structure resembling the gill arch of cartilaginous fishes. (alaska-native-news.com)
The fact that the Sonic hedgehog gene performs the same two functions in the development of gill arches and branchial rays in skate embryos as it does in the development of limbs in mammal embryos may help explain how Gegenbaur arrived at his controversial theory on the origin of fins and limbs. (alaska-native-news.com)
Taken to the extreme, these experiments could be interpreted as evidence that limbs share a genetic programme with gill arches because fins and limbs evolved by transformation of a gill arch in an ancestral vertebrate, as proposed by Gegenbaur," says Gillis. (alaska-native-news.com)
Ventral2
Consequently the morphologically ventral side of the fin faces laterally. (biologists.com)
II, fig. 12 ) give the impression that the fin-plate is attached at right angles to the plane of the girdle or "plaque vasale," and therefore that the portion of the girdle dorsal to the line of attachment is the scapula, and that which is ventral is the coracoid. (biologists.com)
Zebrafish4
In addition to wings in chicks and forelimbs in mice, pectoral fins in zebrafish serve as a model to study vertebrate limb formation. (wikipedia.org)
Zebrafish fin regeneration requires the formation and maintenance of blastema cells. (elsevierpure.com)
We used a chemical mutagenesis screen to identify no blastema (nbl), a zebrafish mutant with an early fin regeneration defect. (elsevierpure.com)
Zebrafish have the remarkable ability to regenerate body parts including the heart and fins by a process referred to as epimorphic regeneration. (oregonstate.edu)
Blastema1
Fin regeneration failed in nbl due to defective blastema formation. (elsevierpure.com)
Limb4
Despite fin and limb developmental processes share many similarities, they exhibit significant differences, one of which is the AER maintenance. (wikipedia.org)
While in birds and mammals the limb AER persists until the end of digit-patterning stage and eventually regresses, the fin AER transforms into an extended structure, named the apical ectodermal fold (AEF). (wikipedia.org)
Gegenbaur looked at the way that these branchial rays connect to the gill arches and noticed that it looks very similar to the way that the fin and limb skeleton articulates with the shoulder," says Gillis. (alaska-native-news.com)
In the later stages of development, Sonic hedgehog maintains outgrowth so that the limb grows to its full size. (alaska-native-news.com)
Species4
In the majority of species, there is no neck, and all external appendages, with the exception of the fins, have been reduced. (jrank.org)
Yet other species such as eels have lost almost all traces of external fins and swim instead by rhythmic movements of their muscular bodies. (jrank.org)
The Pompom Goldfish surely is a unique species, known for its distinct nasal outgrowths, which look like little pom-poms. (aquariumnexus.com)
Without fossil evidence this remains a bit of a mystery - there is a gap in the fossil record between species with no fins and then suddenly species with paired fins - so we can't really be sure yet how paired appendages evolved. (alaska-native-news.com)
Organ1
Another important adaptation which has meant that fish have been able to thrive in the rich waters of the seas and rivers has been the development of the swim bladder- a special organ which has arisen from an outgrowth of the alimentary canal . (jrank.org)
Mature males with cupped outgrowth on operculum and a series of oblique laminae behind gill-opening (Ref. 11970 , 42110 ), and without spines on head (Ref. 42110 ). (mnhn.fr)
Spots1
Of the general features, one can distinguish the metallic sheen of numerous spots scattered over the body and fins, forming even rows. (pettime.net)
Lateral3
At these positions, the induction of cell outgrowth is thought to be mediated by a positive feedback loop of fibroblast growth factors (FGFs) between the intermediate mesoderm, the lateral plate mesoderm and the surface ectoderm. (wikipedia.org)
The fins of Pteropods are now interpreted as the expanded lateral margins of the foot, termed parapodia , not homologous with the siphonof Cephalopods which is formed from epipodia. (yourdictionary.com)
and, as in some Pectinibranchia, broad lateral outgrowths of the foot ( parapodia ) are often developed which may be thrown over the shell or naked dorsal surface of the body. (yourdictionary.com)
Edges1
The edges of the foot form parapodia , often transformed into fins. (yourdictionary.com)
Tail2
The fins are well developed, the dorsal extending from the head and widening near the tail. (pettime.net)
The fish has properly advanced air-bladder in addition to tail and pectoral fins. (eel2.com)
Membranous1
Wings are membranous outgrowths of the body wall and contain no muscles. (proyectosmetalicos.es)
Spines1
However, younger fishermen and aquarists don`t proportion this mind-set due to problems hearthplace eel gave them with its spines at the dorsal fin. (eel2.com)
Rays1
Fins and legs look very different, with fins having rays and many bones, while legs have few bones in a fixed pattern. (freethoughtblogs.com)
Characteristic1
Lack of a dorsal fin and the characteristic pom-poms around the nostrils make them easily distinguishable. (aquariumnexus.com)
Form2
The form, size, and number of fins varies considerably according to the individual's habitat and requirements. (jrank.org)
The most distinctive external features of humpbacks are the flipper size and form, fluke coloration and shape, and dorsal fin shape. (australiaforeveryone.com.au)
Recent2
The agreement is an outgrowth of a recent visit to China by Uzbekistan's chief military prosecutor, Botir Kudratkhojayev. (eurasianet.org)
We asked Rodini if the Atomic Age Jazz Party was an outgrowth of the Young Defenders' recent WWII-themed event? (baltimorepostexaminer.com)
Head3
Pectoral fin length 5/6 of head length (Ref. 42110 ) or nearly as long as head (Ref. 11970 , 42110 ). (mnhn.fr)
Outgrowths cover its whole head, except its eyes and the mouth. (fishkeepingfolks.com)
Like other right whales, the Southern Right Whale is readily distinguished from other whales by the callosities on its head, a broad back without a dorsal fin, and a long arching mouth that begins above the eye. (australiaforeveryone.com.au)
Development2
Tested in two different configurations, it provided the proof of concept that a fin-stabilised ballistic missile was technologically feasible, and led to the development of the Corporal ballistic missile. (wn.com)
The company is an outgrowth of the development of Moore & McCormack. (cruiselinehistory.com)
Back3
As a libertarian with a knowledge of history, Molyneaux finds the root cause of the Israeli-Palestinian conflict as the natural outgrowth of trends within Judaism going back hundreds of years-a view that is quite compatible with a biological perspective. (theoccidentalobserver.net)
In the words of Jewish racial Zionist Elias Auerbach, Zionism would return Jews "back into the position they enjoyed before the nineteenth century-politically autonomous, culturally whole, and racially pure" (John Efron, Defenders of the Race: Jewish Doctors and Race Science in Fin-de-Siècle Europe , 1994, 136). (theoccidentalobserver.net)
Male has nuptial outgrowths consisting of thin spinules that cover the back of the pollex and the second toe's base (Acosta-Galvis et al. (amphibiaweb.org)
Provide1
The majority of these are streamlined to reduce water resistance, with specialized fins that provide propulsion. (jrank.org)
Formation1
The AEF potentially functions as an inhibitor to fin outgrowth since removing the AEF results in the formation of a new AER and subsequently a new AEF. (wikipedia.org)
Result1
This report is the result of a study to develop heat-resistant fin materials possessing a high thermal conductivity for air radiators. (unt.edu)
Vertical1
Fins are basically of two types: vertical, or unpaired fins, and paired fins. (jrank.org)
Special1
The eyes can be located both directly on the surface of the prostomium, and on special outgrowths - ommatophores. (allfishes.org)
Short1
Puffer or porcupine fish, for example, have short, round bodies with greatly reduced fins that are more effective in brief, sculling movements than rapid movement. (jrank.org)
Body wall1
When they are 13·4 mm. long the skeleton has become cartilaginous, and consists of a lamina lying in the fin, and of a basal plate in the body wall. (biologists.com)
Blood1
After the AER-AEF transition at 36 hours post fertilization, the AEF is located distal to the circumferential blood vessels of the fin bud. (wikipedia.org)
Skin1
The whiskery batfish is covered with outgrowths of skin that resemble bits of seaweed. (wordscoach.com)
Side1
Scales on the eyed side with fine spiny outgrowths, which are like rough fur to the touch (Ref. 35388). (europa.eu)
German1
Complementing German and Vienna Secessionist material purchased earlier, the Paul acquisitions give Berman's collection of fin-de-siècle Austrian and German posters unparalleled scope and richness. (gseart.com)
Stage1
At this stage the fin is a halfmoon-shaped fold which, on account of the relative smallness of the embryo as compared with the yolk-sac, points dorsally. (biologists.com)
Line1
The boundary between these two regions can therefore be ascertained only by following the line of attachment of the fin-fold to the body. (biologists.com)