Scientific Papers

The trade in sharks and their products in the United Arab Emirates

The trade in sharks and their products in the United Arab Emirates

Published online on 05. December 2014 The trade in sharks and their products in the United Arab Emirates Rima W. Jabado, Saif M. Al Ghais, Waleed Hamza, Aaron C. Henderson, Julia L.Y. Spaet, Mahmood S. Shivji, Robert H. Hanner ABSTRACT: The rapid growth in the demand for shark products, particularly fins, has led to the

A new metaheuristic algorithm based on shark smell optimization

A new metaheuristic algorithm based on shark smell optimization

Published online on 02. December 2014 A new metaheuristic algorithm based on shark smell optimization Oveis Abedinia, Nima Amjady, Ali Ghasemi ABSTRACT: In this article, a new metaheuristic optimization algorithm is introduced. This algorithm is based on the ability of shark, as a superior hunter in the nature, for finding prey, which is taken from

A C-type lectin isolated from the skin of Japanese bullhead shark binds a remarkably broad range of sugars and induces blood coagulation

A C-type lectin isolated from the skin of Japanese bullhead shark binds a remarkably broad range of sugars and induces blood coagulation

Published online on 29. November 2014 A C-type lectin isolated from the skin of Japanese bullhead shark (Heterodontus japonicus) binds a remarkably broad range of sugars and induces blood coagulation Shigeyuki Tsutsui, Yuma Dotsuta, Ayaka Ono, Masanari Suzuki, Hiroaki Tateno, Jun Hirabayashi, Osamu Nakamura ABSTRACT: The aim of the present study was to determine the

Does ammonia trigger hyperventilation in the spiny dogfish ?

Does ammonia trigger hyperventilation in the spiny dogfish ?

Published online on 20. November 2014 Does ammonia trigger hyperventilation in the elasmobranch, Squalus acanthias suckleyi ? Gudrun De Boeck, Chris M. Wood ABSTRACT: We examined the ventilatory response of the spiny dogfish, to elevated internal or environmental ammonia. Sharks were injected via arterial catheters with ammonia solutions or their Na salt equivalents sufficient to

First record of mako shark off the coast of La Media Guajira, Colombian Caribbean

First record of mako shark off the coast of La Media Guajira, Colombian Caribbean

Published in November 2014 SHORT COMMUNICATION First record of mako shark Isurus oxyrinchus (Lamniformes: Lamnidae) off the coast of La Media Guajira, Colombian Caribbean Paola Palacios-Barreto, Andrea Ramírez-Hernández, Oscar Uriel Mendoza-Vargas & Andrés F. Navia ABSTRACT: The occurrence of the shortfin mako Isurus oxyrinchus, caught by artisanal fishermen using a longline shark fishing, was recorded

Oceanographic influences on a global whale shark hotspot in southern Mozambique

Oceanographic influences on a global whale shark hotspot in southern Mozambique

Published on 04. December 2014 Oceanographic influences on a global whale shark hotspot in southern Mozambique Christoph A Rohner​, Scarla J Weeks, Anthony J Richardson, Simon J Pierce, Marites M Magno-Canto, Gene Carl Feldman, Geremy Cliff, Michael J Roberts ABSTRACT: Coastal aggregations of whale sharks Rhincodon typus around the world are generally seasonal and driven

New Molecular Tools for the Identification of 2 Endangered Smooth-Hound Sharks

New Molecular Tools for the Identification of 2 Endangered Smooth-Hound Sharks

Published on 25. November 2014 New Molecular Tools for the Identification of 2 Endangered Smooth-Hound Sharks, Mustelus mustelus and Mustelus punctulatus Ilaria A. M. Marino, Emilio Riginella, Alessia Cariani, Fausto Tinti, Edward D. Farrell, Carlotta Mazzoldi, Lorenzo Zane ABSTRACT: The smooth-hounds represent a significant proportion of the elasmobranch catch in the Adriatic basin of the

Long-term body pigmentation changes on a manta ray

Long-term body pigmentation changes on a manta ray

Published on 24. November 2014 Long-term body pigmentation changes on a manta ray (Mobulidae) Csilla Ari ABSTRACT: Manta rays (genus Manta) are listed as vulnerable on the IUCN Red List based partly on population studies that use body coloration and ventral spot patterns to identify and count individuals, as a result of such patterns being

Arctic skate preys on remarkably large glacial eelpouts

Arctic skate preys on remarkably large glacial eelpouts

Published on 21. November 2014 Arctic skate Amblyraja hyperborea preys on remarkably large glacial eelpouts Lycodes frigidus I. Byrkjedal, J. S. Christiansen, O. V. Karamushko, G. Langhelle, A. Lynghammar ABSTRACT: During scientific surveys on the continental slopes north-west of Spitsbergen and off north-east Greenland (c. 600 and 1000 m depths), two female Arctic skates Amblyraja hyperborea

Residency patterns and movements of grey reef sharks in semi-isolated coral reef habitats

Residency patterns and movements of grey reef sharks in semi-isolated coral reef habitats

Published on 16. November 2014 Residency patterns and movements of grey reef sharks (Carcharhinus amblyrhynchos) in semi-isolated coral reef habitats Mario Espinoza, Michelle. R. Heupel, Andrew J. Tobin, Colin A. Simpfendorfer ABSTRACT: The degree of reef isolation may limit the frequency of long-range dispersals in reef-associated sharks. Therefore, understanding how the behaviour and spatial ecology

Ontogenetic migration of a female scalloped hammerhead shark in the Gulf of California

Ontogenetic migration of a female scalloped hammerhead shark in the Gulf of California

Published on 26. November 2014 Ontogenetic migration of a female scalloped hammerhead shark Sphyrna lewini in the Gulf of California E Mauricio Hoyos-Padilla, James T Ketchum, A Peter Klimley, Felipe Galván-Magaña ABSTRACT: Background Little information exists on the vertical and horizontal movements of juvenile scalloped hammerhead sharks (Sphyrna lewini). Measurements of the sizes of juveniles

Assessing the potential biases of ignoring sexual dimorphism and mating mechanism in using a single-sex demographic model: the mako shark

Assessing the potential biases of ignoring sexual dimorphism and mating mechanism in using a single-sex demographic model: the mako shark

Published on 21. November 2014 Assessing the potential biases of ignoring sexual dimorphism and mating mechanism in using a single-sex demographic model: the shortfin mako shark as a case study Wen-Pei Tsai, Kwang-Ming Liu, André E. Punt, Chi-Lu Sun ABSTRACT: Most demographic models explicitly track the dynamics of a single sex. However, single-sex models may

Mitogenomics of the Speartooth Shark challenges ten years of control region sequencing

Mitogenomics of the Speartooth Shark challenges ten years of control region sequencing

Published on 19. November 2014 Mitogenomics of the Speartooth Shark challenges ten years of control region sequencing Pierre Feutry, Peter M Kyne, Richard D Pillans, Xiao Chen, Gavin JP Naylor, Peter M Grewe ABSTRACT (provisional) : BackgroundMitochondrial DNA markers have long been used to identify population boundaries and are now a standard tool in conservation

First photographic records of the giant manta ray off eastern Australia

First photographic records of the giant manta ray off eastern Australia

Published on 31. October 2014 First photographic records of the giant manta ray Manta birostris off eastern Australia Lydie I. E. Couturier​, Fabrice R. A. Jaine, Tom Kashiwagi ABSTRACT: We present the first photographic evidence of the presence of the giant manta ray Manta birostris in east Australian waters. Two individuals were photographed off Montague

Stock assessment of sharks in the northern part (Iranian waters) of the Persian Gulf

Stock assessment of sharks in the northern part (Iranian waters) of the Persian Gulf

Published online on 30. October 2014 Stock assessment of sharks in the northern part (Iranian waters) of the Persian Gulf Nassir Niamaimandi, Toraj Valinassab, Gholam-Abbas Zarshenas ABSTRACT: This study was analyzed the annual catch and trawl survey data of sharks in the northern part of the Persian Gulf (26˚30΄ to 30˚00΄N and 49˚00΄ to 56˚00΄E)