Sablefish ( Anoplopoma fimbria ) parentage analyses in aquaculture

2021 ◽  
Author(s):  
Tricia L. Rubi ◽  
Alana G. McPherson ◽  
Niloufar Mokariasl ◽  
Ben F. Koop ◽  
Briony Campbell ◽  
...  
Keyword(s):  
Anoplopoma Fimbria

Transitioning from algae to clay as turbidity agents: Timing, duration, and transition rates for larval sablefish (Anoplopoma fimbria)

Aquaculture ◽  
2021 ◽  
Vol 541 ◽  
pp. 736825
Author(s):  
Jonathan S.F. Lee ◽  
Melissa L. Pierce ◽  
Rachel S. Poretsky ◽  
Matthew A. Cook ◽  
Barry A. Berejikian ◽  
...  
Keyword(s):  
Transition Rates ◽  
Anoplopoma Fimbria

scholarly journals Status of sablefish, Anoplopoma fimbria , aquaculture

2021 ◽  
Author(s):  
Frederick William Goetz ◽  
Bernadita F. Anulacion ◽  
Mary R. Arkoosh ◽  
Matthew A. Cook ◽  
Walton W. Dickhoff ◽  
...  
Keyword(s):  
Anoplopoma Fimbria

Temperature and hunger mediate sablefish (Anoplopoma fimbria) feeding motivation: implications for stock assessment

2004 ◽  
Vol 61 (2) ◽  
pp. 238-246 ◽  
Author(s):  
Allan W Stoner ◽  
Erick A Sturm
Keyword(s):  
Water Temperature ◽  
Food Deprivation ◽  
Stock Assessment ◽  
Effective Area ◽  
Activity Level ◽  
Anoplopoma Fimbria ◽  
Feeding Motivation ◽  
Population Sizes ◽  
Increasing Temperature ◽  
Olfactory Cue

Laboratory experiments were conducted to test the hypothesis that temperature (2–8 °C) and recent feeding history (1–6 days of food deprivation) influence feeding motivation and attacks on baits by adult sablefish (Anoplo poma fimbria). Activity level after introduction of a bait-related olfactory cue increased with increasing water temperature and food deprivation. Fish at the lowest temperature (2 °C) attacked and consumed fewer squid baits (33–71%) than those at higher temperatures (100% at 8 °C). Baits were frequently inspected or handled multiple times before consumption in low temperatures, and time to attack (seconds to >40 min), time to consume, and time to handle baits (2–20 s) all decreased significantly with increasing temperature, with some temperature × feeding history interactions. The total ration consumed increased (<1–8% of body weight) with increasing water temperature. The observed variability in activity and feeding motivation in sablefish may have a large impact on the effective area of baited gear but is rarely considered in stock assessment models. In particular, population sizes based upon baited gear surveys may be underestimated in conditions where temperature is low, natural prey density is high, or where other environmental variables reduce feeding motivation.

Influence of composition of Brachionus plicatilis and Artemia on growth of larval sablefish (Anoplopoma fimbria Pallas)

Aquaculture ◽  
1994 ◽  
Vol 119 (1) ◽  
pp. 47-61 ◽  
Author(s):  
J.N.C. Whyte ◽  
W.C. Clarke ◽  
N.G. Ginther ◽  
J.O.T. Jensen ◽  
L.D. Townsend
Keyword(s):  
Brachionus Plicatilis ◽  
Anoplopoma Fimbria

Statistical distribution of age readings of known-age sablefish (Anoplopoma fimbria)

2012 ◽  
Vol 131-133 ◽  
pp. 1-8 ◽  
Author(s):  
Dana H. Hanselman ◽  
William G. Clark ◽  
Jonathan Heifetz ◽  
Delsa M. Anderl
Keyword(s):  
Statistical Distribution ◽  
Anoplopoma Fimbria

Differential effects of turbidity on prey consumption of piscivorous and planktivorous fish

2003 ◽  
Vol 60 (12) ◽  
pp. 1517-1526 ◽  
Author(s):  
Alex De Robertis ◽  
Clifford H Ryer ◽  
Adriana Veloza ◽  
Richard D Brodeur
Keyword(s):  
Light Intensity ◽  
Prey Capture ◽  
High Light Intensity ◽  
Prey Consumption ◽  
Planktivorous Fish ◽  
Oncorhynchus Keta ◽  
Feeding Rates ◽  
Anoplopoma Fimbria ◽  
Piscivorous Fish ◽  
Feeding Experiments

Contrast degradation theory predicts that increased turbidity decreases the visibility of objects that are visible at longer distances more than that of objects that are visible at short distances. Consequently, turbidity should disproportionately decrease feeding rates by piscivorous fish, which feed on larger and more visible prey than particle-feeding planktivorous fish. We tested this prediction in a series of laboratory feeding experiments, the results of which indicated that prey consumption by two species of planktivorous fish (juvenile chum salmon (Oncorhynchus keta) and walleye pollock (Theragra chalcogramma)) is much less sensitive to elevated turbidity than piscivorous feeding by sablefish (Anoplopoma fimbria). Planktivorous feeding in the turbidity range tested (0–40 nephelometric turbidity units (NTU)) was reduced at high light intensity, but not at low light intensity. Comparatively low (5–10 NTU) turbidity decreased both the rate at which sablefish pursued prey and the probability of successful prey capture. These results suggest that turbid environments may be advantageous for planktivorous fish because they will be less vulnerable to predation by piscivores, but will not experience a substantial decrease in their ability to capture zooplankton prey.

scholarly journals Testing a passive deterrent on longlines to reduce sperm whale depredation in the Gulf of Alaska

2015 ◽  
Vol 72 (5) ◽  
pp. 1667-1672 ◽  
Author(s):  
Victoria O'Connell ◽  
Janice Straley ◽  
Joe Liddle ◽  
Lauren Wild ◽  
Linda Behnken ◽  
...  
Keyword(s):  
Sperm Whale ◽  
Gulf Of Alaska ◽  
Primary Objective ◽  
Collaborative Effort ◽  
Physeter Macrocephalus ◽  
Anoplopoma Fimbria ◽  
Acoustic Data ◽  
The Individual ◽  
And Control ◽  
Individual Fishing Quota

Abstract In Alaska, sperm whale (Physeter macrocephalus) depredation on longline sets has increased since implementation of the Individual Fishing Quota programme in 1995. A collaborative effort (SEASWAP) between longliners, scientists, and managers has undertaken research to evaluate this depredation with a primary objective to develop and test a passive deterrent that would reduce depredation without reducing catch rate of sablefish (Anoplopoma fimbria). Commercial longliners, fishing for their own sablefish quotas during the regular season, deployed beaded gear (25 mm lucite beads attached to gangions) with control gear and set recorders to collect acoustic data. Beaded and control gear were randomly assigned by skate quad (672 hooks) with 5 quads in each longline set. Acoustic recorders were used to document sperm whale creak–pause events, representative of depredation of the longline gear. Although there were more sablefish per skate quad on the beaded gear and there was a decrease in depredation events on the beaded gear compared with the control, neither effect was significant (p = 0.205 and 0.364, respectively). The SEASWAP project is testing other deterrent strategies including gear modifications and the establishment of a sighting network to improve avoidance.

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