Results 31 to 40 of about 26,009 (214)

Fishing characters of skate ray, Raja pulchra by the offshore longline fishery in Heuksan-do, Korea [PDF]

Bulletin of the Korean society of Fisheries Technology, 2011
Catches, CPUE, fishing season, disc width composition and fishing ground were studied to rebuild skate ray, Raja pulchra resource by the offshore longline fishery in Heuksan-do, Korea. Annual catches and CPUE of skate ray were increased from 2003 to 2010 (CPUE: from 2007 to 2010) continuously.
Hyun-Su Jo, Hak-Jin Hwang, Dae-Hyeon Kwon, Gyeong-Suk Jeong, Kang-Ho Choi, Byung-Yeul Cha, Yang-Jae Im   +6 more
openaire   +1 more source

Survey sequencing and comparative analysis of the elephant shark (Callorhinchus milii) genome.

PLoS Biology, 2007
Owing to their phylogenetic position, cartilaginous fishes (sharks, rays, skates, and chimaeras) provide a critical reference for our understanding of vertebrate genome evolution.
Byrappa Venkatesh, Ewen F Kirkness, Yong-Hwee Loh, Aaron L Halpern, Alison P Lee, Justin Johnson, Nidhi Dandona, Lakshmi D Viswanathan, Alice Tay, J Craig Venter, Robert L Strausberg, Sydney Brenner   +11 more
doaj   +1 more source

Comparative genomics of chondrichthyan Hoxa clusters

BMC Evolutionary Biology, 2009
Background The chondrichthyan or cartilaginous fish (chimeras, sharks, skates and rays) occupy an important phylogenetic position as the sister group to all other jawed vertebrates and as an early lineage to diverge from the vertebrate lineage following ...
Zhong Ying-Fu, Mulley John F, Holland Peter WH   +2 more
doaj   +1 more source

Early life sensory ability—ventilatory responses of thornback ray embryos (Raja clavata) to predator-type electric fields [PDF]

, 2015
Predator avoidance is fundamental for survival and it can be particularly challenging for prey animals if physical movement away from a predatory threat is restricted. Many sharks and rays begin life within an egg capsule that is attached to the sea bed.
Ballard, Bedore, Bigelow, Bodznick, Clark, Cousseau, Cox, Dulvy, Dulvy, Evans, Foulley, Freitas, Gannon, Giguère, Gill, Herskin, Hoff, Kempster, Kimber, Leonard, Long, Lucifora, Luer, Martin, Moore, Oulton, Peters, Post, Richards, Semeniuk, Semeniuk, Sih, Sisneros, Thomason, Tricas, Venables, Warkentin, Warkentin   +37 more
core   +1 more source

Our shifting perspectives on the oceans [PDF]

, 2003
In the last 15 years new research findings have radically reshaped our understanding of human effects on ocean ecosystems. Here I describe five major shifts in perspective that reveal our impacts to be more severe and persistent than previously ...
Roberts, C.M.
core   +1 more source

Molecular markers reveal spatially segregated cryptic species in a critically endangered fish, the common skate (Dipturus batis) [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2010
Many sharks and skates are particularly vulnerable to overfishing because of their large size, slow growth, late maturity and low fecundity. In Europe dramatic population declines have taken place in common skate (Dipturus batisL.), one of the largest demersal fish in regional shelf seas, leading to extirpations from substantial parts of its former ...
Griffiths, A.M, Sims, D.W, Cotterell, S.P, El Nagar, A.E, Ellis, J.R, Lynghammar, A, Mchugh, M, Neat, F.C, Pade, N.G, Queiroz, N, Serra-Pereira, B, Rapp, T, Wearmouth, V.J, Genner, M.J   +13 more
openaire   +3 more sources

Reproductive biology of the eyespot skate atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the southwestern atlantic ocean (34ºs - 42ºS) [PDF]

, 2018
Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a bycatch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle
Colonello, Jorge Horacio, Galíndez, Elena Juana, Macchi, Gustavo Javier, Wehitt, Anahi   +3 more
core   +3 more sources

Cartilaginous fish diversity in the Western Visayas, Philippines, including two putative unidentified species and the first record of Carcharhinus plumbeus (Elasmobranchii: Carcharhiniformes: Carcharhinidae) [PDF]

Acta Ichthyologica et Piscatoria
This annotated checklist documents the diversity of cartilaginous fishes, including sharks, batoids (rays and skates), and chimaeras, from Panay and Guimaras islands, Western Visayas, Philippines, through surveys at fish markets and ports.
Roxanne Cabebe-Barnuevo, Dianne Frances Penuela, Emmanuel S. Delloro Jr., Ricardo P. Babaran, Hiroyuki Motomura, Maria Celia D. Malay   +5 more
doaj   +3 more sources

Commercial catches, reproduction and feeding habits of Raja asterias (Chondrichthyes: Rajidae) in a coastal area of the Tyrrhenian Sea (Italy, northern Mediterranean) [PDF]

Acta Adriatica, 2007
A total of 52 “rapido” (towed toothed beam gears) trawls were monitored in late winter-summer of the 1999-2000 period to assess the R. asterias size structure at this time of higher yields as well as 36 fishing operations performed by “volantina” (trawl ...
Marino VACCHI, Maria Grazia FINOIA, Ivan CONSALVO, Umberto SCACCO, Alessandro COLASANTE, Michele ROMANELLI   +5 more
doaj  

Epigonal Conditioned Media from Bonnethead Shark, Sphyrna tiburo, Induces Apoptosis in a T-Cell Leukemia Cell Line, Jurkat E6-1

Marine Drugs, 2013
Representatives of Subclass Elasmobranchii are cartilaginous fish whose members include sharks, skates, and rays. Because of their unique phylogenetic position of being the most primitive group of vertebrates to possess all the components necessary for ...
Courtney Bennett, Ashby B. Bodine, Marissa Ciesla, Philip Adams, Brittany Leigh, Stephanie R. Leggett, Jodi Miedema, Theresa Cantu, Carl A. Luer, Jennifer E. Yordy, Catherine J. Walsh   +10 more
doaj   +1 more source