Movement and Orientation

Huntingford, Felicity A.; Hunter, William Ross; Braithwaite, Valerie

doi:10.1002/9781444354614.ch4

Cited by 5 publications

(6 citation statements)

References 195 publications

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“…Our analysis assumed that salinity was the major cue for movement, which is reasonable for examining the potential effects of large-scale river diversions. However, fish also respond to other cues (e.g., temperature, food, and predators; Watkins and Rose 2013) by using vision, olfaction, and other detection mechanisms (Huijbers et al 2012;Huntingford et al 2012). We treated these other cues as random movements when fish were within their salinity thresholds.…”

Section: Discussionmentioning

confidence: 99%

Simulating Fish Movement Responses to and Potential Salinity Stress from Large‐Scale River Diversions

et al. 2014

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River diversions are a major but controversial management approach to restoring coastal wetlands and mitigating offshore oil spills in the northern Gulf of Mexico. One of the controversies concerns the potential displacement of and salinity stress on commercially and recreationally important fish species in response to the widespread and prolonged freshening of habitat. We developed a coupled hydrodynamics–fish movement model and applied it to the Caernarvon diversion located in the Breton Sound estuary, Louisiana. Hydrodynamics model output was used as input to the individual‐based fish movement model. The period of model simulation was from April 1 to July 1, 2010. We simulated three diversion scenarios: baseline, pulse, and oil spill mitigation. We first used field data from Bay Anchovy Anchoa mitchilli and showed that the model predicted downestuary shifts similar to those observed in field studies under large diversions. We then defined generic low‐ and intermediate‐salinity fish species and simulated each under the three diversion scenarios. Compared with the baseline diversion scenario, more than 50% of the intermediate‐salinity individuals moved about 15 km farther downestuary under the pulse diversion scenario and moved more than 35 km under the oil spill mitigation diversion scenario. The effects of the diversions on the low‐salinity species were evidenced by individuals becoming more dispersed (i.e., spreading out downestuary) and more exposed to bursts of too high salinity. Our conclusions agreed with those from earlier field and modeling analyses that focused on average (rather than transitory) fish responses. Received November 4, 2013; accepted November 7, 2013

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Section: Discussionmentioning

confidence: 99%

Simulating Fish Movement Responses to and Potential Salinity Stress from Large‐Scale River Diversions

et al. 2014

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“…Flow may be a useful source of information: many animals use rheotaxis in concert with other cues to orient to important stimuli (Huntingford et al. ). The results from the Motor Response, Displaced Start (MR‐DS) condition were unexpected – once nautiluses returned to their training ‘start’ position, perhaps by passively moving with flow, most found the exit.…”

Section: Discussionmentioning

confidence: 99%

“…The use of local visual cues for small-scale orientation may be useful in the more brightly lit surrounds close to the surface of the clear waters where they live but is probably of less use at the depths where nautiluses spend most of their time. Flow may be a useful source of information: many animals use rheotaxis in concert with other cues to orient to important stimuli (Huntingford et al 2012). The results from the Motor Response, Displaced Start (MR-DS) condition were unexpectedonce nautiluses returned to their training 'start' position, perhaps by passively moving with flow, most found the exit.…”

Section: Discussionmentioning

confidence: 99%

Flexible Spatial Orientation and Navigational Strategies in Chambered Nautilus

Crook¹,

Basil²

2012

Ethology

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Nautilus is a remnant of an externally shelled cephalopod lineage that flourished between 450 and 60 million years ago. It is a deep‐water scavenger that lacks the complex brain and behavioural repertoire of its soft‐bodied relatives, the coleoid cephalopods. Nautilus makes repeated, nightly migrations from deep to shallow water along coral reef slopes to forage, thus an ability to navigate to known locations may be selectively advantageous. Alternatively, drifting passively with the current may be sufficient to locate food and mates distributed randomly over a large area. The derived neural structures that support learning and memory in coleoids are absent from the nautilus brain, indicating that substantial differences between learning abilities in nautilus and coleoids are likely. However, our previous work has demonstrated both associative and spatial learning in nautilus. In laboratory experiments, we tested whether Nautilus pompilius could learn to navigate towards a goal location using either visual cues or motor responses. Results indicate that animals relied both on proximate and distant visual cues to orient but did not use egocentric cues, a somewhat surprising finding given that nautilus spends most of its time in near darkness. Animals learned visual information rapidly and in some cases were able to switch to other tactics when salient visual cues were removed or manipulated.

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“…In food fish production, aquaculture-induced changes in fish behavior can be beneficial, as they make the fish more suitable biologically and economically for the set of management parameters that are used to produce the fish for market. However, when fish are raised for aquaculture-assisted fisheries programs, aquaculture-induced changes in fish behavior can be counterproductive in that altered behaviors can be mal-adaptive when fish are stocked in the wild; this can make the fish less fit, which helps explain the low survival of hatchery-produced fish after stocking (Brown and Laland, 2001;Brown and Day, 2002;Huntingford et al, 2012bHuntingford et al, , 2012c. Understanding how all aspects of aquaculture can affect a fish's behavior and produce mal-adaptive behaviors that lower fitness is critical to the success of aquacultureassisted fisheries programs, because a major goal of these programs should be to produce fish that have the same behaviors as the wild fish (Brown and Laland, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Traditional fish hatcheries and traditional production management combine to raise fish in physically constrained environments that are impoverished, and they experience unusual conditions such as high densities, abundant and predictable food, and the absence of predators. Under these conditions, selection is relaxed for behaviors such as predator avoidance and death by starvation (foraging behaviors), while selection is intensified for behaviors such as competition for resources (Huntingford et al, 2012c). Because this modification in behavior is heritable, domestication selection can fix the alleles that produce the behaviors that are superior in the hatchery but, in doing so, it produces fish that behave differently than wild fish; it is likely that this will make them sub-viable, and it can also lower the fitness of the wild stock when the hatchery-produced fish mate with wild fish (Huntingford et al, 2012d).…”

Section: Introductionmentioning

confidence: 99%

Behavioral observations of the endangered Rio Grande silvery minnow in a conservation aquaculture facility

Tave¹,

Toya²,

Hutson³

2018

Croatian Journal of Fisheries

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A major reason why conservation aquaculture is needed to improve the success of aquaculture-assisted fisheries is that traditional production aquaculture produces fish with mal-adaptive behaviors. These behaviors can be produced via domestication and culture techniques, and preventing these mal-adaptive behaviors requires integrating improvements in genetic management and culture protocols. The genetic protocols needed to minimize hatchery-induced genetic changes have received considerable attention, but changing the way fish are raised has received less effort. Conservation aquaculture cultures fish in environments that resemble their native habitats so that when stocked, they behave like wild fish rather than hatchery fish. A purpose built-conservation aquaculture facility can also be used to learn about a species’ behavior and how it reacts to changes in the environment, something which can be difficult or expensive to study in the wild. These observations can then be used to help direct both propagation and recovery management. This paper provides the rationale for why genetic management, culture systems, and management practices need to be altered to produce fish that are behaviorally similar to wild fish for aquaculture-assisted fisheries programs. It then provides a description of some of the behaviors of the endangered Rio Grande silvery minnowHybognathus amarusthat were observed at the Los Lunas Silvery Minnow Refugium, a purpose-built conservation aquaculture facility, and explains how some of these behaviors can be used in culture and recovery management. Behaviors described are: schooling; predator avoidance; feeding behavior; use of vegetation for cover and predator avoidance; habitat use by bottom substrate; location in the water column; upstream movement via a fish ladder; movement upstream in a high-velocity channel; response to changes in water level; spawning behavior; seine avoidance; and Kaah-chee-nyee Srkaash, a behavior described for the first time.

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Movement and Orientation

Cited by 5 publications

References 195 publications

Simulating Fish Movement Responses to and Potential Salinity Stress from Large‐Scale River Diversions

Simulating Fish Movement Responses to and Potential Salinity Stress from Large‐Scale River Diversions

Flexible Spatial Orientation and Navigational Strategies in Chambered Nautilus

Behavioral observations of the endangered Rio Grande silvery minnow in a conservation aquaculture facility

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