Results 61 to 70 of about 839 (149)

Ameloblastic secretion and calcification of the enamel layer in shark teeth [PDF]

, 1985
Tooth primordia at early stages of mineralization in the sharks Negaprion brevirostris and Triaenodon obesus were examined electron microscopically for evidence of ameloblastic secretion and its relation to calcification of the enamel (enameloid ...
Kemp, Norman E.
core   +1 more source

Can denticle morphology help identify southeastern Australian elasmobranchs?

Journal of Fish Biology, Volume 104, Issue 6, Page 1848-1859, June 2024.
Abstract Elasmobranchs are covered in scale‐like structures called dermal denticles, comprising dentine and enameloid. These structures vary across the body of an individual and between species, and are frequently shed and preserved in marine sediments.
Mariah Appleby, Vincent Raoult, Matt K. Broadhurst, Troy Gaston   +3 more
wiley   +1 more source

Fishery of elasmobranchs with some observations on the biology and stock assessment of Carcharhinus limbatus (P. Muller & Henle, 1839) exploited along Malabar coast [PDF]

, 2012
Elasmobranchs are caught in trawls, gillnets and longlines along the Malabar region of Kerala and they are landed almost round the year, accounting less than 1% of the total catch.
Manojkumar, P P, Pavithran, P P, Zacharia, P U   +2 more
core  

Comparative assessment of eDNA metabarcoding and longline deployments for elasmobranch surveying across a large tropical marine park network

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 34, Issue 4, April 2024.
Abstract Medium‐ to large‐scale marine protected areas (MPAs) are playing an increasingly important role in global marine biodiversity conservation. A key question is “how do we collect relevant data on biodiversity and population trends to inform their design and measure success?” This question is particularly relevant for marine taxa that are ...
Katrina M. West, Alastair V. Harry, Sam Payet, Euan Harvey, Dambimangari Rangers, Bardi‐Jawi Rangers, Karajarri Rangers, Yawuru Country Managers, Michael J. Travers   +8 more
wiley   +1 more source

La campagne CORAIL 1 du "N.O. CORIOLIS" aux îles Chesterfield (du 15 août au 4 septembre 1988) : données préliminaires sur les peuplements ichtyologiques [PDF]

, 1990
La campagne CORAIL 1 a permis l'étude des peuplements ichtyologiques coralliens sur trois stations aux îles Chesterfield. Chaque station est divisée en trois strates de profondeur : 0-5 m, 5-10 m et 10-15 m.
Barbigant, Georges, Doherty, P., Kulbicki, Michel, Menou, Jean-Louis, Mou-Tham, Gérard, Randall, J.E., Tirard, Philippe   +6 more
core  

Biodiversity and Ecosystem Health of the Aldabra Group, Southern Seychelles: Scientific Report to the Government of Seychelles. [PDF]

, 2015
National Geographic's Pristine Seas project, in collaboration with the government of the Seychelles, the Island Conservation Society (ICS), the Seychelles Islands Foundation (SIF), and the Waitt Foundation, conducted an expedition to explore the poorly ...
Alan M. Friedlander, B. Henning, E.K. Brown, Enric Ballesteros, Enric Sala, J. Beets, J.M. Fay, P. Haupt, P. Rose   +8 more
core  

Ultrastructure of calcified cartilage in the endoskeletal tesserae of sharks [PDF]

, 1979
The tesserate pattern of endoskeletal calcification has been investigated in jaws, gill arches, vertebral arches and fins of the sharks Carcharhinus menisorrah, Triaenodon obesus and Negaprion brevirostris by techniques of light and electron microscopy.
Alcock, Ali, Anderson, Anderson, Applegate, Bachra, Bargmann, Bassett, Benzer, Berrill, Bonucci, Bonucci, Bonucci, Bormuth, Boyde, Boyde, Boyde, Boyde, Brown, Campo, Daniel, Denison, Denison, Dingle, Dziewiatkowski, Fleisch, Fleisch, Gebhardt, Glimcher, Goodrich, Hall, Hall, Hall, Halstead, Halstead, Halstead, Hartman, Hasse, Holmgren, Howell, Howell, Höhling, Höhling, Jarvik, Jarvik, Jones, Kemp, Kemp, Kemp, Kemp, Kogayashi, Kuettner, Kyle, Lohmander, MacConaill, Majeska, Mathews, Mathews, Mathews, Mathews, Matukas, Meikle, Moss, Moss, Moss, Moss, Moss, Moy-Thomas, Patterson, Peresz, Pita, Ridewood, Romer, Romer, Roth, Röse, Sayegh, Schaeffer, Schmidt, Schmidt, Shepard, Silbermann, Simon, Stahl, Tarlo, Thyberg, Travis, Tretjakoff, Urist, Urist, Urist, Weidenreich, Weidenreich, Weidenreich, Westoll, Woodward, Wurmbach, Wurthier, Yanagisawa, Ørvig., Ørvig., Ørvig.   +101 more
core   +1 more source

Sumberdaya Ikan Cucut (Hiij) Yang Tertangkap Nelayan Di Perairan L Aut Jawa [the Shark Resource Caught by Fishermen in Java Sea] [PDF]

, 2007
Many of fishermen including in Java Sea made shark as fishing target species. Shark is sub group Elasmobranchii and group Cartilaginous. Comparing to the other fish species, information on shark in Indonesia is very lack.
Mahiswara, N. (nFN), Widodo, A. A. (Agustinus)   +1 more
core  

Testicular histology of Mustelus schmitti springer, 1939 (Elasmobranchii, triakidae) [PDF]

, 2013
Mustelus schmitti presenta unos testiculos de desarrollo diametrico en la que espermatocistos forma redonda muestran una disposición zonal. Cada zona tiene espermatocistos que contienen células germinales en una sola fase de desarrollo.
Rojas, Fernando Oscar
core   +1 more source

Switch from sexual to parthenogenetic reproduction in a zebra shark [PDF]

, 2017
Parthenogenesis is a natural form of asexual reproduction in which embryos develop in the absence of fertilisation. Most commonly found in plants and invertebrate organisms, an increasing number of vertebrate species have recently been reported employing
Bone, R., Coulton, L., Dudgeon, C.L., Ovenden, J.R., Thomas, S.   +4 more
core   +2 more sources