Essays about: "sharks"

Showing result 1 - 5 of 14 essays containing the word sharks.

  1. 1. Cleaning interactions by bluestreak cleaner wrasse (Labroides dimidiatus) and moon wrasse (Thalassoma lunare) on pelagic thesher sharks (Alopias pelagicus)

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Katarina Grepp; [2019]
    Keywords : cleaning; interactions; sharks; thresher; bluestreak; wrasse;

    Abstract : Cleaning symbioses are a well-studied mutualism among marine species. However, the interactions occurring between cleaner fish and sharks are lacking in research, which makes it a target for further investigation. READ MORE

  3. 2. Oxygen isotope composition (δ18O) in Sandbar Shark teeth as a proxy to environment : developmental and morphofunctional variability

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Junyu Chen; [2019]
    Keywords : Oxygen isotopes; Sandbar Shark; enameloid; shark teeth;

    Abstract : Oxygen isotope composition is a well-known environmental proxy, studied in both fossil and living organisms. In this research project, the ratio of δ18O was studied in the biomineral of enameloid tissue of Sandbar Shark teeth. All the sharks were kept in the tropical ocean tank of the Blackpool Sea Life Center (UK). READ MORE

  4. 3. Dynamics of Selachian (Shark) Dental Morphology During the Early Mesozoic

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Alexander Paxinos; [2017]
    Keywords : Early Mesozoic; Selachii; morphological disparity; geometric morphometrics; early radiation; Tidig Mesozoisk; Selachimorpha; morfologisk disparitet; geometrisk morfometri; tidig strålning;

    Abstract : The ancestors of all modern day sharks and rays (Neoselachii) may have appeared during the Late Palaeozoic, but their major diversification happened sometime during the Early Mesozoic. Taxonomic evidence places the first neoselachian diversification in the Early Jurassic. READ MORE

  5. 4. De antropogena hoten mot valhajen (Rhincodon typus)

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Josefin Damm; [2017]
    Keywords : Rhincodon typus; valhaj; mortalitet; fiske; fartygskollisioner; ekoturism; plast;

    Abstract : Valhajen (Rhincodon typus) är vår tids största fisk och når ofta en längd av 12 meter. Arten återfinns nära kusten så väl som ute på öppet hav i temperaturer, i varmt till tropiskt vatten. Över 80 % av dess tid spenderas på djup grundare än 20 meter vilket gör den utsatt för bland annat ekoturism, fiske och fartygskollisioner. READ MORE

  6. 5. Turbulent flow control via nature inspired surface modifications

    University essay from KTH/Mekanik

    Author : Miguel Beneitez; Johan Sundin; [2017]
    Keywords : flow control; DNS; lattice-Boltzmann; surface coating; friction drag; surface structures; superhydrophobic; porous; fibers; micropillars;

    Abstract : Many of the flows in nature are turbulent. To modify turbulent flows, nature serves itself with different types of coatings. Sharks have riblets-like structures on their skin, fishes have slime with polymers and the surface of the lotus flower has superhydrophobic properties. READ MORE