2024 Shark phylogeny

Shark phylogeny

Author: rmux

August undefined, 2024

WebbSharks: relationships between genera (also within genera for Etmopteridae, Pristiophoridae, and Atelomycterus) primarily based on Naylor et al. (2012) Elasmobranch Phylogeny: A Mitochondrial Estimate Based on 595 Species (In: Carrier, Musick, & Heithaus (eds) Biology of Sharks and their Relatives, Edition 2. Webbcommon name(s) white shark Lineage ( full ) cellular organisms ; Eukaryota ; Opisthokonta ; Metazoa ; Eumetazoa ; Bilateria ; Deuterostomia ; Chordata ; Craniata ; Vertebrata ; …

Taxonomy browser (Carcharodon carcharias) - National Center for ...

Physiology Buoyancy. Unlike bony fish, sharks do not have gas-filled swim bladders for buoyancy. ... The liver's effectiveness is... Respiration. Like other fish, sharks extract oxygen from seawater as it passes over their gills. Unlike other fish,... Thermoregulation. Most sharks are ... Visa mer Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the Visa mer Fossil record The oldest total-group chondrichthyans, known as acanthodians or "spiny sharks", appeared during the Early Silurian, around 439 million years ago. The oldest confirmed members of Elasmobranchii sensu lato (the group … Visa mer Buoyancy Unlike bony fish, sharks do not have gas-filled swim bladders for buoyancy. Instead, sharks rely on a large liver filled with oil that contains squalene, and their cartilage, which is about half the normal density of bone. Their liver … Visa mer Shark lifespans vary by species. Most live 20 to 30 years. The spiny dogfish has one of the longest lifespans at more than 100 years. Visa mer Until the 16th century, sharks were known to mariners as "sea dogs". This is still evidential in several species termed "dogfish," … Visa mer Teeth Shark teeth are embedded in the gums rather than directly affixed to the jaw, and are constantly replaced throughout life. Multiple rows of replacement teeth grow in a groove on the inside of the jaw and steadily move … Visa mer Smell Sharks have keen olfactory senses, located in the short duct (which is not fused, unlike bony fish) between the anterior and posterior nasal openings, with some species able to detect as little as one part per million of … Visa mer Webb20 dec. 2024 · 1. Introduction. The Chondrichthyes (sharks, rays, and chimeras) are a diverse group of animals that occupy a key position in the phylogeny of the vertebrates, as one of their most ancient lineages [ 1, 2 ]. Estimates of the diversification of the group based on DNA sequences are of the order of 300–460 million years ago. mars theater lafayette ga

Hox cluster genomics in the horn shark, Heterodontus francisci

WebbMy name is Alosha. I am very interested in biology, especially marine biology, marine life and oceanography. I don't understand why time and … Webb8 sep. 2008 · Shark Phylogeny Tree Chondrichthyes split into Holocephali (which includes modern-day chimaeras) and Elasmobranchii (which … WebbThree‐dimensional visualization after the segmentation of hard as well as soft tissue reveals new details of tissue organization and allows us to draw conclusions on the significance of organs in their function. In this study, we apply a two‐step (untreated and soft tissue stained) diffusible iodine‐based contrast‐enhanced micro‐computed … mars the roman god symbol

Molecular phylogeny of Squaliformes and first occurrence of ...

red muscle morphology of the thresher sharks (family Alopiidae)

Webb24 feb. 2024 · The broad notion in shark phylogeny, namely the division of sharks into Galeomorphii and Squalomorphii and the monophyly of the eight shark orders, was also … WebbBullhead sharks were believed to be closely related to more primitive Mesozoic hybodont sharks (which also had dorsal finspines), and therefore considered to be living relics, but it is now well established that bullheads share a common ancestry with modern (galeomorph) sharks. However, the phylogenetic relationships among bullhead species … mars the planet suiteWebbThe bigeye thresher shark is an epipelagic (lives in the surface layer of the ocean) species utilising diel migration – descending to deep waters during daylight and returning to shallower depths during the night. However, they have been recorded at a depth of 723m. They can also travel huge distances, with one tagged individual travelling 2 ... mars the movie 2016

"Webb27 feb. 2014 · Molecular Phylogeny of the Bamboo Sharks ( Chiloscyllium spp.) Noor Haslina Masstor, 1Abdullah Samat, 1Shukor Md Nor, 1and Badrul Munir Md-Zain 1 Academic Editor: Barbara Mantovani Received 27 Feb 2014 Revised 01 May 2014 Accepted 16 May 2014 Published 11 Jun 2014 Abstract " - Shark phylogeny

Shark phylogeny

Animals: Vertebrates Organismal Biology - gatech.edu

Webb21 okt. 2024 · We constructed a phylogenetic tree representing all seven carpet shark families and 13 genera. We did not capture the full species diversity within two families, Hemiscylliidae and Parascylliidae, but we did not exclude any major groups or species with an atypical biogeographical range. Webb17 nov. 2024 · Interestingly this species segregates by age. Adolescents between 35-48 cm (1-1.6 ft.), are normally seen in 40-150 m (131-492 ft.) on sandy bottoms. As the sharks age, they move closer and closer to …

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WebbPhylogeny of Animals Animals with true tissues Most animal phyla Triploblastic Bilateral symmetry Animals are monophyletic Share common ancestor Sponges lack true tissues Basal animals Diploblastic Radial symmetry Deuterosto my present Deuterosto my Molting Lophophore or trochophore larva. ... Chondrichthyes Feeding Largest sharks and rays ... Webb4 feb. 2000 · Numbers above the lines are bootstrap values obtained in 1,000 replicates for maximum parsimony. (A) Phylogenetic analysis of amino acid sequences of exons 1 and 2 of Hox9 genes of human, mouse, zebrafish, and horn shark. (B) Phylogenetic analysis of nucleotide sequences of Evx-1 and Evx-2 of human, mouse, and zebrafish and EvxN of …

WebbA phylogenetic tree is a diagram that represents evolutionary relationships among organisms. Phylogenetic trees are hypotheses, not definitive facts. The pattern of branching in a phylogenetic tree reflects how species or other groups evolved from a series of common ancestors. In trees, two species are more related if they have a more recent ... Webb17 dec. 2024 · This review presents a synthesis of shark bioluminescence knowledge. Up to date, bioluminescent sharks are found only in Squaliformes, and specifically in Etmopteridae, Dalatiidae and Somniosidae families. The state-of-the-art knowledge about the evolution, ecological functions, histological structure, the associated squamation …

Webb6 jan. 2014 · (Simplified phylogeny of Figure 1 in Amemiya et al., “The African coelacanth genome provides insights into tetrapod evolution,” Nature, Vol. 496:311-316 (April 18, 2013).) Accordingly, you’d expect shark genomes to be equally distant from the proteins of both ray-finned fish and mammals. WebbHexanchiform Physiology (cow sharks, frilled shark, etc.) Lamniform Physiology (goblin shark, basking shark, megamouth shark, thresher sharks, shortfin and longfin mako …

WebbSharks are 450 million years old and have been on this planet longer than almost any other animal. They have lived through every major mass extinction event and have survived long past many of their competitors. With over 3,000 species spanning nearly half a billion years, sharks are one of the most evolutionarily successful species to ever live.

WebbDunkleosteous was an enormous placoderm from the Devonian period. It measured up to 10 meters in length and weighed up to 3.6 tons. (credit: Nobu Tamura) Chondrichthyes (cartilaginous fishes) The clade Chondrichthyes is diverse, consisting of sharks, rays, and skates, together with sawfishes and a few dozen species of fishes called chimaeras … mars the salon los angelesWebb27 maj 2014 · By bringing together published data on aspects of hammerhead shark phylogeny, morphology, biology, physiology, and ecology, we argue that the same novel adaptations that have historically contributed to evolutionary success have become maladaptive under current levels and modes of exploitation. mars theatre lafayette gaWebbWhale sharks have a broad distribution in tropical and warm temperate seas, usually between latitudes 30°N and 35°S. They are known to inhabit both deep and shallow coastal waters and the lagoons of coral atolls and reefs. Australia is one of the most reliable locations to find whale sharks. mars the salonWebb24 feb. 2024 · Chondrichthyes occupy a key position in the phylogeny of vertebrates. The complete sequence of the mitochondrial genome (mitogenome) of four species of sharks and five species of rays was obtained by whole genome sequencing (DNA-seq) in the Illumina HiSeq2500 platform. The arrangement and features of the genes in the … mars the secret scienceWebb15 nov. 2005 · Thresher shark phylogeny The phylogenetic relationship of the thresher sharks has been examined using both morphological and molecular techniques( Maisey, 1985 ; Compagno, 1990 ; Eitner, 1995 ; Martin and Naylor, 1997 ; Naylor et al., 1997 ). mars theater springfieldWebbElasmobranchii (sharks and rays) > Lamniformes (Mackerel sharks) > Lamnidae (Mackerel sharks or white shark) Etymology: Carcharodon: carchar-, presumably referring to Carcharias (Odontaspidae); odon (Gr.), tooth, “Teeth as in Carchari[a]s, serrated on both edges”.(See ETYFish); carcharias: From the Ancient Greek karkharías, shark, derived … mars the war lordWebb16 aug. 2015 · The presence of luminous organs was confirmed for the Sleeper shark genus Zameus. These results indicate that bioluminescence in sharks is not restricted … mars theatre edappal