Scientific Papers

Parthenogenesis in a whitetip reef shark involves a reduction in ploidy

Parthenogenesis in a whitetip reef shark involves a reduction in ploidy

Published online on 06. June 2014 Parthenogenesis in a whitetip reef shark Triaenodon obesus involves a reduction in ploidy D. S. Portnoy, C. M. Hollenbeck, J. S. Johnston, H. M. Casman, J. R. Gold ABSTRACT: Genetic analysis of a female whitetip reef shark Triaenodon obesus and her stillborn pup, assumed to be of parthenogenetic origin,

Age and Growth of the Bull Shark in the Western North Atlantic Ocean

Age and Growth of the Bull Shark in the Western North Atlantic Ocean

Published online on 13. May 2014 Age and Growth of the Bull Shark in the Western North Atlantic Ocean Lisa J. Natanson, Douglas H. Adams, Megan V. Winton, Jasmine R. Maurer ABSTRACT: Age and growth estimates for the Bull Shark Carcharhinus leucas were derived from 121 vertebral centra collected from Bull Sharks (59.1–223.5 cm FL) between

The effect of magnetically-treated baits and barriers on teleost and elasmobranch behavior

The effect of magnetically-treated baits and barriers on teleost and elasmobranch behavior

Published online on 07. June 2014 A large scale field analysis examining the effect of magnetically-treated baits and barriers on teleost and elasmobranch behavior C.P. O’Connell, P. He ABSTRACT: Recent studies have demonstrated that elasmobranchs (i.e. sharks, skates and rays) are sensitive and often deterred by electrosensory stimuli (e.g. permanent magnets and electropositive metals). These

First confirmed record of the white shark from Indonesia

First confirmed record of the white shark from Indonesia

Published online on 20. May 2014 First confirmed record of the white shark Carcharodon carcharias (Lamniformes: Lamnidae) from Indonesia Fahmi and Dharmadi ABSTRACT: A six metre adult male of the white shark Carcharodon carcharias was caught by demersal longliners operating off Dompu, Indonesia. The specimen was landed and sold at Tanjung Luar landing site in

Increasing rate of species discovery in sharks coincides with sharp population declines

Increasing rate of species discovery in sharks coincides with sharp population declines

Published on 09. June 2014 Increasing rate of species discovery in sharks coincides with sharp population declines: implications for biodiversit Haseeb S. Randhawa, Robert Poulin, Martin Krkoše ABSTRACT: The global biodiversity of some taxonomic groups is poorly described, but thought to be decreasing rapidly. Surprisingly, this holds for a group of the world’s most iconic

Feeding and migration habits of white shark from Isla Guadalupe inferred by analysis of stable isotopes

Feeding and migration habits of white shark from Isla Guadalupe inferred by analysis of stable isotopes

Epub on 01. June 2014 Feeding and migration habits of white shark Carcharodon carcharias (Lamniformes: Lamnidae) from Isla Guadalupe inferred by analysis of stable isotopes δ15N and δ13C Mario Jaime-Rivera, Javier Caraveo-Patiño, Mauricio Hoyos-Padilla, Felipe Galván-Magaña ABSTRACT: Stable isotope composition of marine top predator’s tissues provides insight information of its trophic ecology and migratory behavior.

Endohelminth parasites of the leafscale gulper shark off Madeira Archipelago

Endohelminth parasites of the leafscale gulper shark off Madeira Archipelago

Published in June 2014 Endohelminth parasites of the leafscale gulper shark, Centrophorus squamosus (Bonnaterre, 1788) (Squaliformes:Centrophoridae) off Madeira Archipelago Graça Costa, Tomás Chada, Egberto Melo-Moreira, Serena Cavallero, Stefano D’Amelio ABSTRACT: The endohelminth parasite fauna of a deep water shark, the leafscale gulper shark, Centrophorus squamosus, examined from Madeiran waters, from September 2009 to January 2010,

How robust are estimates of coral reef shark depletion?

How robust are estimates of coral reef shark depletion?

Publishe online on 29. May 2014 How robust are estimates of coral reef shark depletion? Justin R. Rizzari, Ashley J. Frisch, Sean R. Connolly ABSTRACT: On coral reefs, diver-surveys of shark abundance indicate that populations are severely depleted, even in no-take zones with low-levels of illegal fishing, but are protected by strictly enforced no-entry zones.

Feeding Habits, Daily Ration, and Potential Predatory Impact of Spiny Dogfish in North Carolina

Feeding Habits, Daily Ration, and Potential Predatory Impact of Spiny Dogfish in North Carolina

Published online on 27. May 2014 Feeding Habits, Daily Ration, and Potential Predatory Impact of Mature Female Spiny Dogfish in North Carolina Coastal Waters Charles W. Bangley, Roger A. Rulifson ABSTRACT: Though the feeding habits of Spiny Dogfish Squalus acanthias in the northwestern Atlantic Ocean have received much attention due to their potential interactions with

Occurrence of the narrowmouth catshark in southern Brazil

Occurrence of the narrowmouth catshark in southern Brazil

Published online on 19. May 2014 Occurrence of the narrowmouth catshark Schroederichthys bivius (Chondrichthyes: Scyliorhinidae) in southern Brazil Hugo Bornatowski, Lilyane Santos, Maurício De Castro Robert, Pedro Amadeus Weiser ABSTRACT: This paper reports the first record of the narrowmouth catshark Schroederichthys bivius from the coast of Paraná State, southern Brazil, increasing its distribution along the

Illegal trade of aquatic species in the Philippines detected by DNA barcoding

Illegal trade of aquatic species in the Philippines detected by DNA barcoding

Published in May 2014 Illegal trade of regulated and protected aquatic species in the Philippines detected by DNA barcoding. Asis AM, Lacsamana JK, Santos MD ABSTRACT: Illegal trade has greatly affected marine fish stocks, decreasing fish populations worldwide. Despite having a number of aquatic species being regulated, illegal trade still persists through the transport of

Distribution and Dynamic Habitat Use of Young Bull Sharks in a Highly Stratified Northern Gulf of Mexico Estuary

Distribution and Dynamic Habitat Use of Young Bull Sharks in a Highly Stratified Northern Gulf of Mexico Estuary

Published on 19. May 2014 Distribution and Dynamic Habitat Use of Young Bull Sharks Carcharhinus leucas in a Highly Stratified Northern Gulf of Mexico Estuary J. Marcus Drymon, Matthew J. Ajemian, Sean P. Powers ABSTRACT: Understanding how animals alter habitat use in response to changing abiotic conditions is important for effective conservation management. For bull

The dentition of the narrownose smooth-hound shark

The dentition of the narrownose smooth-hound shark

Published online on 19. May 2014 The dentition of the narrownose smooth-hound shark, Mustelus schmitti Mauro Belleggia, Daniel E. Figueroa and Claudia Bremec ABSTRACT: The present study provides a quantitative and qualitative analysis on the dentition of Mustelus schmitti, and estimates the tooth-replacement rate. In total, 47 males and 56 females of M. schmitti were

Genetic structure of populations of whale sharks among ocean basins

Genetic structure of populations of whale sharks among ocean basins

Published online on 14. May 2014 Genetic structure of populations of whale sharks among ocean basins and evidence for their historic rise and recent decline Vignaud, T. M., Maynard, J. A., Leblois, R., Meekan, M. G., Vázquez-Juárez, R., Ramírez-Macías, D., Pierce, S. J., Rowat, D., Berumen, M. L., Beeravolu, C., Baksay, S. and Planes, S.

Big catch, little sharks: Insight into Peruvian small-scale longline fisheries

Big catch, little sharks: Insight into Peruvian small-scale longline fisheries

Published online on 14. May 2014 Big catch, little sharks: Insight into Peruvian small-scale longline fisheries Doherty, P. D., Alfaro-Shigueto, J., Hodgson, D. J., Mangel, J. C., Witt, M. J. & Godley, B. J. ABSTRACT: Shark take, driven by vast demand for meat and fins, is increasing. We set out to gain insights into the