Timothy Loher
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View article: A Test of Deriving Sex-Composition Data for the Directed Pacific Halibut Fishery via At-Sea Marking
A Test of Deriving Sex-Composition Data for the Directed Pacific Halibut Fishery via At-Sea Marking Open
Sensitivity analyses have identified uncertainty regarding sex ratios within commercial landings of Pacific Halibut Hippoglossus stenolepis as an influential source of variance within annual stock assessments for this species in U.S. and C…
View article: Dispersal and seasonal movements of Pacific halibut (Hippoglossus stenolepis) in the eastern Bering Sea and Aleutian Islands, as inferred from satellite-transmitting archival tags
Dispersal and seasonal movements of Pacific halibut (Hippoglossus stenolepis) in the eastern Bering Sea and Aleutian Islands, as inferred from satellite-transmitting archival tags Open
Background Understanding connectivity is critical to the management of exploited fish stocks, but migratory dynamics of Pacific halibut ( Hippoglossus stenolepis ) in the Bering Sea and Aleutian Islands region are not well-understood. In t…
View article: Length and sex effects on the spatial structure of catches of Pacific halibut (Hippoglossus stenolepis) on longline gear
Length and sex effects on the spatial structure of catches of Pacific halibut (Hippoglossus stenolepis) on longline gear Open
Field experiments were conducted to test the hypotheses thatPacific halibut (Hippoglossus stenolepis) display small-scale spatial structure within longline catches, relativeto other species and empty hooks, or within-species based on sex o…
View article: Red king crab larval advection in Bristol Bay: Implications for recruitment variability
Red king crab larval advection in Bristol Bay: Implications for recruitment variability Open
Recruitment variability is poorly understood for Bering Sea crab stocks. The nearshore area in southwest Bristol Bay (Alaska, USA) is hypothesized as having historically (i.e., prior to ~ 1980) been the most important spawning ground for B…
View article: Characterizing activity and assessing bycatch survival of Pacific halibut with accelerometer Pop-up Satellite Archival Tags
Characterizing activity and assessing bycatch survival of Pacific halibut with accelerometer Pop-up Satellite Archival Tags Open
Background Pacific halibut support high-value commercial and sport fisheries in the north Pacific Ocean, making survival of Pacific halibut bycatch in trawl fisheries an important management concern. We present a method for characterizing …
View article: A test of the detection range of acoustic transmitters and receivers deployed in deep waters of Southeast Alaska, USA
A test of the detection range of acoustic transmitters and receivers deployed in deep waters of Southeast Alaska, USA Open
Background Movement data represent important inputs to both numerical and conceptual models that contribute to the assessment and management of sablefish (Anoplopoma fimbria) and Pacific halibut (Hippoglossus stenolepis) in the eastern Nor…
View article: Identification of Genomic Regions Associated With Sex in Pacific Halibut
Identification of Genomic Regions Associated With Sex in Pacific Halibut Open
Understanding and identifying the genetic mechanisms responsible for sex-determination are important for species management, particularly in exploited fishes where sex biased harvest could have implications on population dynamics and long-…
View article: Pop-up satellite archival tag (PSAT) temporal data resolution affects interpretations of spawning behaviour of a commercially important teleost
Pop-up satellite archival tag (PSAT) temporal data resolution affects interpretations of spawning behaviour of a commercially important teleost Open
Background The effects of temporal data resolution on the interpretation of fish behaviours are questions fundamental to research programs using electronic tags with finite data storage and data transmission capacities. However, understand…
View article: Characterization of Depth Distributions, Temperature Associations, and Seasonal Migrations of Atlantic Halibut in the Gulf of St. Lawrence using Pop-Up Satellite Archival Tags
Characterization of Depth Distributions, Temperature Associations, and Seasonal Migrations of Atlantic Halibut in the Gulf of St. Lawrence using Pop-Up Satellite Archival Tags Open
The fishery for Atlantic Halibut Hippoglossus hippoglossus in the Gulf of St. Lawrence (Gulf) is currently experiencing its highest landings since the 1950s. However, the absence of information on adult habitat use has limited the developm…