Sex-biased dispersal and growth in sablefish (Anoplopoma fimbria) in the northeastern Pacific Ocean

Morita, Shinkichi; Morita, Kentaro; Nishimura, Akira

doi:10.1007/s10641-010-9613-1

Cited by 19 publications

(14 citation statements)

References 33 publications

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“…Differences in movement traits between sexes are documented in some species. For example, a mark-recapture study in round goby (Neogobius melanostomus) reports longer swimming distance in males (Marentette et al, 2011), whereas a study in sablefish (Anoplopoma fimbria) reports the opposite trend (Morita, Morita, & Nishimura, 2012). Although there is no study in perch with regard to sex differences in movement, a higher growth rate in female perch (Le Cren, 1958) suggests the possibility, considering the positive correlation between growth rate and activity found in some animals (Biro & Stamps, 2008).…”

Section: Activity In the Wildmentioning

confidence: 99%

Fine‐scale movement ecology of a freshwater top predator, Eurasian perch (Perca fluviatilis), in response to the abiotic environment over the course of a year

Nakayama

Doering-Arjes

Linzmaier

et al. 2018

Ecology of Freshwater Fish

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Fine‐scale underwater telemetry affords an unprecedented opportunity to understand how aquatic animals respond to environmental changes. We investigated the movement patterns of an aquatic top predator, Eurasian perch (Perca fluviatilis), using a three‐dimensional acoustic telemetry system installed in Kleiner Döllnsee (25 ha), a small, shallow, mesotrophic natural lake. Adult piscivorous perch (N = 16) were tagged and tracked in the whole lake at a minimum of 9‐s intervals over the course of one year. Perch increased swimming activity with higher water temperature and light intensity. Air pressure, wind speed and lunar phase also explained perch movements, but the effects were substantially smaller compared to temperature and light. Perch showed a strong diel pattern in activity, with farther swimming distances and larger activity spaces during the daytime, compared to the night‐time. To investigate the influence of prey distribution, we sampled the prey fish in both littoral and pelagic zones in both day and night monthly using gill nets. We found that the prey fish underwent diel horizontal migration, using the littoral zone during the day and the pelagic zone during the night. However, perch showed the opposite patterns, suggesting either that the prey fish avoided predation risk or that the horizontal diel migration of perch was driven by other mechanisms. Our results collectively suggest that the movement ecology of piscivorous perch is mainly governed by a foraging motivation as a function of abiotic variables, especially temperature and light.

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Section: Activity In the Wildmentioning

confidence: 99%

Fine‐scale movement ecology of a freshwater top predator, Eurasian perch (Perca fluviatilis), in response to the abiotic environment over the course of a year

Nakayama

Doering-Arjes

Linzmaier

et al. 2018

Ecology of Freshwater Fish

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“…Maloney and Sigler (2008) used juvenile tagged sablefish to estimate the shape of the fishery selectivity curve and concluded it was more likely domeshaped than asymptotic, which would mean that older fish are less vulnerable to fishing mortality. Analysis of Japanese sablefish tag returns showed that there was a relationship between mean growth increments and distance moved (Morita et al 2012). They suggested that the further distances moved by females is a proximate cause for the larger lengths reached by females.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have shown rapid mixing of sablefish across broad geographic areas (Heifetz and Fujioka 1991;Maloney and Sigler 2008;Morita et al 2012). The sablefish movement rates estimated in Heifetz and Fujioka (1991) were used to evaluate management strategies for geographic apportionment of federal sablefish harvest and examine theoretical properties of migratory fish populations (Heifetz et al 1997;Heifetz and Quinn 1998).…”

Section: Introductionmentioning

confidence: 99%

Move it or lose it: movement and mortality of sablefish tagged in Alaska

HanselmanDana

HeifetzJonathan

EchaveKaty

et al. 2015

Can. J. Fish. Aquat. Sci.

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A basic step in understanding the dynamics of a fish population is to quantify movement and mortality rates. Conventional mark-recapture experiments have provided the foundation for studies on animal movement, particularly for fish. Previous studies have shown rapid mixing of sablefish (Anoplopoma fimbria) among fishery regulatory areas, with the pattern of movement related to fish size. Over 300 000 tag releases in Alaska and over 27 000 tag recoveries from 1979 to 2009 were analyzed. We used a Markov model to quantify annual movement probabilities among areas for three size groups of sablefish. The negative-binomial likelihood was used to model the tag-recovery data because of significant overdispersion. Annual movement probabilities were high, ranging from 10% to 88% depending on area of occupancy at each time step and size group. Overall, movement probabilities were very different between areas of occupancy and moderately different between size groups. Estimated annual movement of small sablefish from the central Gulf of Alaska had the reverse pattern of a previous study, with 29% moving westward and 39% moving eastward. Movement probabilities also varied annually, with decreasing movement until the late 1990s and increasing movement until 2009. Year-specific magnitude in movement probability of large fish was highly negatively correlated with female spawning biomass estimates from the federal stock assessment. Mean mortality estimates from time at liberty were similar to the federal stock assessment. Incorporating these tag-recovery and movement data into a fully age-structured spatial stock assessment model will inform harvest apportionment strategies to conserve spawning biomass and maximize future yields.

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“…Males grow more slowly than females (McFarlane and Beamish, 1983;Sasaki, 1985;Kimura et al, 1993;Saunders et al, 1997;Echave et al, 2012;Morita et al, 2012), and northern fish appear to have faster growth rates and attain larger sizes than southern fish (Kimura et al, 1993;Kimura, 2008). Depth-related differences in growth rates are suggested by the pattern of smaller size-at-age with depth Head et al, 2014).…”

Section: Growthmentioning

confidence: 99%

“…The underlying reason for why some fish make extensive migrations, whereas others remain in the same general location for many years, is elusive. Morita et al (2012) concluded that fish dispersing away from Bering Sea and Gulf of Alaska locations were mostly females that gained a growth advantage by migrating. We did not find a difference in growth between dispersing and resident females, but we did find a growth advantage for dispersing males.…”

Section: Implications Of Spatial Movement Patternsmentioning

confidence: 99%

Patterns of movement, growth, and survival of adult sablefish (Anoplopoma fimbria) at contrasting depths in slope waters off Oregon

Sogard¹,

Berkeley²

2017

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Abstract-Demersal fish inhabiting continental slopes experience colder temperatures, increasing hydrostatic pressure, decreasing oxygen saturation, and decreasing productivity with increased depth. We examined depth-related patterns in smalland large-scale movement, growth, and relative survival of sablefish (Anoplopoma fimbria) tagged during 1996-2004 in Oregon waters at depths of 141-1225 m; 2614 of 17,400 fish were recaptured as of December 2016. Recapture rates indicated significant size-dependent mortality. Discard mortality was affected by surface temperature for small fish (<55 cm in fork length [FL]) from upper slope depths (<400 m). Depth effects on recapture rates reflected differences in fishing effort. Most recaptures were near the initial capture depth. Although 91% of the recaptures were within 200 km of the tagging location, some individuals migrated thousands of kilometers, reaching the western Aleutian Islands. Growth rates were faster for females than for males and decreased with depth. Sablefish in the deepest depths sampled had extremely slow growth rates (<2 cm FL/year), low dispersal (2.4%), and were largely female (81%). Prior studies of age distribution indicate that deep slope habitats also support greater longevity, potentially providing a refuge for older fish and a buffering effect to longevity overfishing, depending on spatial differences in exploitation rates.

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Sex-biased dispersal and growth in sablefish (Anoplopoma fimbria) in the northeastern Pacific Ocean

Cited by 19 publications

References 33 publications

Fine‐scale movement ecology of a freshwater top predator, Eurasian perch (Perca fluviatilis), in response to the abiotic environment over the course of a year

Fine‐scale movement ecology of a freshwater top predator, Eurasian perch (Perca fluviatilis), in response to the abiotic environment over the course of a year

Move it or lose it: movement and mortality of sablefish tagged in Alaska

Patterns of movement, growth, and survival of adult sablefish (Anoplopoma fimbria) at contrasting depths in slope waters off Oregon

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