Simon J. B. Gulak

Global stock structure of the Silky shark (Carcharhinus falciformis, Carcharhinidae) assessed with high-throughput DNA sequencing

Derek W. Kraft, Emily Conklin, Evan B. Freel, Melanie Hutchinson et autres

Silky shark (Carcharhinus falciformis, Carcharhinidae) numbers have declined steeply in recent decades due to the fin fishery and bycatch in pelagic fisheries. Due to a lack of data on stock delineations, this species is currently managed in ocean-spanning jurisdictions defined by regional …

us, gb, sa, au, Afrique du Sud (code pays fourni par la source)

Validation and otolith-mass prediction of age and growth for cardinal snapper Pristipomoides macrophthalmus of the Caribbean Sea

Ivy E. Baremore, Allen H. Andrews, Simon J. B. Gulak, Rachel T. Graham et autres

Abstract Cardinal snapper Pristipomoides macrophthalmus is a commercially important, but commonly misidentified, deepwater species in artisanal and semi-industrial fisheries throughout the Caribbean Sea. As with many tropical deepwater fishes, little is known about the biology or ecology of the species. Bomb radiocarbon …

gb, hn, nc, pa, us (code pays fourni par la source)

Global stock structure of the Silky shark (Carcharhinus falciformis, Carcharhinidae) assessed with highthroughput DNA sequencing

Derek W. Kraft, Emily Conklin, Evan B. Freel, Melanie Hutchinson et autres

Silky shark (Carcharhinus falciformis, Carcharhinidae) numbers have declined steeply in recent decades due to the fin fishery and bycatch in pelagic fisheries. Due to a lack of data on stock delineations, this species is currently managed in ocean-spanning jurisdictions defined by regional …

us, gb, sa, au, Afrique du Sud (code pays fourni par la source)

Blue shark (Prionace glauca) movements, habitat use, and vertical overlap with longline fishing gears in the southwestern Atlantic Ocean

Federico Mas, Enric Cortés, Rui Coelho, Omar Defeo et autres

us, pt, uy (code pays fourni par la source)

Morphometric Conversions for 33 Shark Species from the Western North Atlantic Ocean

Lisa J. Natanson, Camilla T. McCandless, Michelle S. Passerotti, Carolyn Belcher et autres

such as size-at-age and size-at-maturity, as essential inputs (Maunder and Punt, 2013), while multiple data-limited assessment approaches estimate fshing mortality from changes in the length distribution (Chong et al., 2020).Further, assessing progress relative to management regulations often requires the ability to accurately …

us, ca (code pays fourni par la source)

Horizontal and vertical movements of immature dusky sharks Carcharhinus obscurus in relation to commercial longline fisheries in the western North Atlantic Ocean

Andrea M. Kroetz, Simon J. B. Gulak, John K. Carlson

Abstract Background Many species of sharks, including the dusky shark Carcharhinus obscurus, are often incidentally captured in commercial pelagic and bottom longline fisheries. Incidental capture can lead to at-vessel or post-release mortality and can be detrimental to populations of threatened, endangered, or …

us (code pays fourni par la source)

Less Soak Time Saves Those upon the Line: Capture Times and Hooking Mortality of Sharks Caught on Bottom Longlines

Simon J. B. Gulak, John K. Carlson

Abstract The National Marine Fisheries Service is mandated by the Magnuson–Stevens Fishery Conservation and Management Act to implement effective annual catch limits and accountability measures to prevent overfishing. These requirements compel further research into alternative fishing practices that could reduce mortality of …

us (code pays fourni par la source)

Resurrection of the sixgill shark Hexanchus vitulus Springer & Waller, 1969 (Hexanchiformes, Hexanchidae), with comments on its distribution in the northwest Atlantic Ocean

Toby S. Daly‐Engel, Ivy E. Baremore, R. Dean Grubbs, Simon J. B. Gulak et autres

us (code pays fourni par la source)

A guide to landing shark species with fins naturally attached

Simon J. B. Gulak, Heather E. Moncrief-Cox, Thomas J. Morrell, Alyssa N. Mathers et autres

The practice of finning, defined as the removal of the fin or fins from a shark and discarding the remainder of the shark at sea, was first addressed in the United States of America (U.S.) in 1993. The 1993 Fishery Management Plan …

Allometric relationships for species captured in longline fisheries from the western north Atlantic

Simon J. B. Gulak, Michael P. Enzenauer, Bethany M. Deacy, John K. Carlson

Commercial landings data provide the platform upon which most research, assessments, and management plans are based. Data collection authorities obtain information from commercial records; however, commercial records are often in native units that are of limited use for data analysis. Conversion factors …

Characterizing loggerhead sea turtle, Caretta caretta, bycatch in the US shark bottom longline fishery

John K. Carlson, Simon J. B. Gulak, Michael P. Enzenauer, Lesley Stokes et autres

Sea turtle bycatch in longline fishing gear is an ongoing threat to the recovery of sea turtle populations. While considerable research has focused on pelagic longline fisheries, very little attention has been paid to captures of sea turtles in bottom longlines. Estimates …

Occurrence and habitat use of the critically endangered smalltooth sawfish Pristis pectinata in the Bahamas

Tristan L. Guttridge, Simon J. B. Gulak, Bryan R. Franks, John K. Carlson et autres

This study documents and discusses recent (2002-2015) sightings and captures of smalltooth sawfish Pristis pectinata in the Bahamas. Movement patterns and habitat preferences of five P. pectinata are examined: two tracked with acoustic telemetry in Bimini and three tagged with pop-up archival …

bs, us, Afrique du Sud (code pays fourni par la source)