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First documented record of the silky shark in Italian waters
Published in June 2012 Record of Carcharhinus falciformis (Bibron in Müller & Henle, 1839), in Italian waters (Ligurian Sea, Northwestern Mediterranean) Garibaldi F. & Orsi Relini L. ABSTRACT: A specimen of the silky shark, Carcharhinus falciformis (Bibron in Müller & Henle, 1839), male, 209 cm TL, was caught off Sanremo, in the Ligurian Sea (Northwestern
An aberrant extra fin in the yellownose skate
Published in June 2012 An aberrant extra fin in Zearaja chilensis (Chondrichthyes: Rajidae) Deli Antoni M.Y., Delpiani G.E., Delpiani S.M., Mabragaña E. & Díaz de Astarloa J.M. ABSTRACT: The first case of an aberrant extra fin in a specimen of Zearaja chilensis (Guichenot, 1848), caught off Patagonian waters, Argentine Sea, is reported here. Cybium 2012,
Four new deep water skates from the southwest Pacific
Published in June 2012 New deep water skates of the genus Notoraja Ishiyama, 1958 (Rajoidei, Arhynchobatidae) from the southwest Pacific Bernard Séret and Peter R. Last ABSTRACT: Four new skates of the genus Notoraja Ishiyama, 1958 are described from the rarely accessed, deep waters off New Caledonia, Vanuatu and Fiji islands, and the Norfolk Ridge.
Estimating the Potential Impacts of Large Mesopredators on Benthic Resources
Published online on 3rd July 2012 Estimating the Potential Impacts of Large Mesopredators on Benthic Resources: Integrative Assessment of Spotted Eagle Ray Foraging Ecology in Bermuda Ajemian MJ, Powers SP, Murdoch TJT ABSTRACT: Declines of large sharks and subsequent release of elasmobranch mesopredators (smaller sharks and rays) may pose problems for marine fisheries management as
Morphological Characters of the Thickbody Skate
Published online on 29. June 2012 Morphological Characters of the Thickbody Skate Amblyraja frerichsi (Krefft 1968) (Rajiformes: Rajidae), with Notes on Its Biology Bustamante C, Lamilla J, Concha F, Ebert DA, Bennett MB ABSTRACT: Detailed descriptions of morphological features, morphometrics, neurocranium anatomy, clasper structure and egg case descriptions are provided for the thickbody skate Amblyraja
Feeding and trophic relationships of mako and blue sharks in the Pacific Ocean
Published online in June 2012 Feeding and trophic relationships of two highly migratory sharks in the eastern south Pacific Ocean Lopez K., S., Barría M., P. & Meléndez C., R. ABSTRACT: A total of 433 stomachs of Prionace glauca and Isurus oxyrinchus. The results showed a high dietary overlapping (PSI = 0.69) in both sharks,
Record of a pregnant Bentfin Devil Ray and occurrence of Giant Manta Ray in Equatorial Atlantic
Published online in June 2012 Record of a pregnant Mobula thurstoni and occurrence of Manta birostris (Myliobatiformes: Mobulidae) in the vicinity of Saint Peter and Saint Paul Archipelago (Equatorial Atlantic) Mendonça, S. A., Macena, B. C. L., Creio, E., Viana, D. L. & Hazin, F. H. ABSTRACT: In this study, the occurrence of a pregnant
Diet of the lesser electric ray in southern Brazil
Published online in June 2012 Diet of the lesser electric ray Narcine brasiliensis (Olfers, 1831) (Elasmobranchii, Narcinidae) in southern Brazil Ferreira, L. C. & Vooren, C. M ABSTRACT: The objective of this study was to describe the diet of the lesser electric ray (Narcine brasiliensis) in the waters along the coast of Rio Grande do
Live-bearing manta ray
Published online on 06. June 2012 Live-bearing manta ray: how the embryo acquires oxygen without placenta and umbilical cord Taketeru Tomita, Minoru Toda, Keiichi Ueda, Senzo Uchida and Kazuhiro Nakaya ABSTRACT: We conducted an ultrasonographic experiment on a pregnant manta ray, Manta alfredi (Chondrichthyes, Batoidea). This study showed how the embryo of the live-bearing elasmobranchs
Swim speed and tail-beat frequency of Greenland sharks
Published online on 08. June 2012 The slowest fish: Swim speed and tail-beat frequency of Greenland sharks Yuuki Y. Watanabe, Christian Lydersen, Aaron T. Fisk, Kit M. Kovacs ABSTRACT: Locomotory muscle function of ectothermic fishes is generally depressed in cold waters, making them vulnerable to avian and mammalian predators whose body temperature remains high. Paradoxically,
Is the Megamouth Shark susceptible to mega-distortion?
Published in 2012 Is the Megamouth Shark susceptible to mega-distortion? Investigating the effects of twenty-two years of fixation and preservation on a large specimen of Megachasma pelagios (Chondrichthyes: Megachasmidae) Brett A. Human, Susan M. Morrison and Ian D. MacLeod ABSTRACT: On 18 August 1988, the third reported Megamouth Shark (Megachasma pelagios Taylor, Compagno and Struhsaker,
Pectoral fin scooping of a sharksucker from the flank of a blacktip shark
Published online on 14. June 2012 A Rare Use of a Shark’s Fin? Pectoral Fin Scooping of a Sharksucker from The Flank Area of a Female Blacktip Shark Erich K. Ritter ABSTRACT: Sharks react in a variety of ways when sharksuckers attach to their bodies. Here, an unobserved behavior is described in which a blacktip
First record of spinetail devilray from the south-eastern Pacific Ocean
Published online on 25. May 2012 First record of Mobula japanica (Rajiformes: Myliobatidae) from the south-eastern Pacific Ocean Carlos Bustamante, Lydie I. E. Couturier and Michael B. Bennett ABSTRACT: The spinetail devilray Mobula japanica was recorded for the first time in the south-eastern Pacific Ocean, from a single beach-washed specimen examined at Bahía Inglesa, Chile.
Records of Mobula rays from the waters between Gabon and Angola
Published online on 03. April 2012 Records of rays of the genus Mobula (Chondrichthyes: Myliobatiformes: Myliobatidae) from the waters between Gabon and Angola (eastern tropical Atlantic) Caroline R. Weir, Bruno C.L. Macena and Giuseppe Notarbartolo di Sciara ABSTRACT: The occurrence of the rays belonging to the genera Mobula (known collectively as the ‘devil rays’) and
First record of long nose chimaera from Bay of Bengal
Published online on 04. April 2012 First record of long nose chimaera Neoharriotta pinnata (Chondrichthys: Chimaeriformes: Rhinochimaeridae), from Bay of Bengal, India (north-eastern Indian Ocean) T.V. Suresh and S.M. Raffi ABSTRACT: Our paper describes the first record of Neoharriotta pinnata from the Bay of Bengal region of the Indian Ocean. A single specimen of a