8% of the discarded specimens, whereas commercial species such as billfishes
are considered epipelagic (Block et al.
Use of rostral characters for identifying adult billfishes
(Teleostei: Perciformes: Istiophoridae and Xiphiidae).
The istiophorid billfishes
are large, highly migratory predators, whose range and movements encompass vast geographical areas.
Some aspects of the sytematics and distribution of Billfishes
Outside of directed tournaments, Atlantic billfishes
are generally not the only targets in charter and recreational troll fishery of North Carolina.
Effort in the JLL is given as total number of longline hooks deployed and catch as numbers of boated and discarded tunas (several species), swordfish, and istiophorid billfishes
Abstract--We evaluated the conservation benefits of the use of circle hooks compared with standard J hooks in the recreational fishery for Atlantic istiophorid billfishes
, noting hooking location and the presence of trauma (bleeding) for 123 blue marlin (Makaira nigricans), 272 white marlin (Kajikia albida), and 132 sailfish (Istiophorus platypterus) caught on natural baits rigged with one of the two hook types.
The vertical distribution of tunas and billfishes
, and fishing efficiency between Korean regular and deep longlines in the Atlantic Ocean.
There were no significant differences in the arithmetic mean yearly CPUE's of total tunas and billfishes
across the three subareas examined (Fig.
Abstract--Procedures for sampling genomic DNA from live billfishes
involve manual restraint and tissue excision that can be difficult to carry (mr and may produce stresses that affect fish survival.
Overview of fisheries for the billfishes
Only recently have PSATs been attached to smaller (<40 kg) istiophorid billfishes
Abstract--The identification of larval istiophorid billfishes
from the western North Atlantic Ocean has long been problematic.
This is particularly relevant to highly mobile species, such as billfishes
, that can cover large distances in a short time (Prince and Brown, 1991).