Limnetic feeding behavior of juvenile sockeye salmon in Lake Washington and predator avoidance

Eggers, Douglas M.

doi:10.1080/03680770.1977.11896813

Cited by 62 publications

(102 citation statements)

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“…Several studies of planktonic organisms suggest that the relative rate of change in light intensity is the proximate cause and initiating cue of diel vertical migrations (DVMs; Ringelberg 1995, Cohen & Forward 2009, although a recent study of the deep water jellyfish Periphylla periphylla (Dupont et al 2009) suggested that migration at the population level can be ascribed to a preference of a certain light range at the individual level. Studies of planktivores have also suggested that fish follow a preferred light intensity during their migrations (Eggers 1978, Bohl 1980, Appenzeller & Leggett 1995.…”

Section: Abstract: Diel Vertical Migration · Preferred Light Range ·mentioning

confidence: 99%

“…food abundance or predator density, factors determines which habitat marine organisms occupy in the pelagic environment (McFarland 1986, de Robertis 2002, Metcalfe et al 2008, Boscarino et al 2009). Visually foraging fish require light to sustain feeding (Eggers 1978, Aksnes & Utne 1997, Ryer & Olla 1999, Boscarino et al 2010), but the anti-predator behaviour of many fish also appears to be affected by light , Ryer & Olla 1998. Changes in the vertical distribution of fish have thus been associated with concurrent changes in surface irradiance (Roe 1983, Baliño & Aksnes 1993, Rasmussen & Giske 1994, Kaartvedt et al 1996, Frank & Widder 2002.…”

Section: Introductionmentioning

confidence: 99%

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Follow the light—diurnal and seasonal variations in vertical distribution of the mesopelagic fish Maurolicus muelleri

Staby¹,

Aksnes²

2011

Mar. Ecol. Prog. Ser.

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Section: Abstract: Diel Vertical Migration · Preferred Light Range ·mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Follow the light—diurnal and seasonal variations in vertical distribution of the mesopelagic fish Maurolicus muelleri

Staby¹,

Aksnes²

2011

Mar. Ecol. Prog. Ser.

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“…Juvenile sockeye salmon (Onchorhynchus nerka) are voracious and effective consumers of zooplankton [28], and their impacts on zooplankton communities have been well established. In Lake Aleknagik, juvenile sockeye salmon are one of the dominant planktivorous predators (along with three-spine sticklebacks) and are present in relatively high abundances [26].…”

Section: Introductionmentioning

confidence: 99%

Effects of climate change on zooplankton community interactions in an Alaskan lake

Carter

Schindler

Francis

2017

Clim Chang Responses

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Background: Ecological communities are organized by interactions among the biota, and between the biota and external environmental drivers that affect the dynamics of individual taxa. Climate change may alter communities in unexpected ways when environmental drivers have complex effects on individual species that are then transmitted indirectly to other species via biotic interactions. Methods: We used a multivariate autoregressive (MAR) modeling framework to assess the strengths of intrinsic interactions and extrinsic (environmental) forcing responsible for changes in the zooplankton community of a sockeye salmon nursery lake in southwestern Alaska from 1963 to 2009. During this time period there has been a strong trend towards earlier spring ice breakup dates and warmer summer water temperatures. Results: MAR analyses of community time-series showed that water temperature was the dominant driver of change in the zooplankton community; competitive interactions were relatively rare, and only copepods (both cyclopoids and calanoids) were affected by predation (juvenile sockeye salmon). Best-fit community models were used to develop scenarios of zooplankton community composition under several different potential climate conditions and salmon densities and revealed the potential for a shift in the dominant zooplankton taxa in this lake, driven largely by taxon-specific sensitivity to climate and sockeye salmon predation. Conclusions: Simulations suggest that cladocerans will become more prevalent in this community and that calanoid copepods will suffer from ongoing climate warming. These results have important implications for fish in these northern lakes, as they suggest that the production of planktivorous fish should increase with ongoing climate change.

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“…In summer, strong and persistent thermoclines form and the fish undertake complex diel vertical migrations, probably in response to the distribution of their zooplankton prey and predators (Eggers 1978) and to conserve energy (Brett 1971).…”

Section: Discussionmentioning

confidence: 99%

Growth of landlocked sockeye salmon (Oncorhynchus nerka) in New Zealand

Graynoth

1987

New Zealand Journal of Marine and Freshwater Research

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The growth of landlocked sockeye salmon in the Waitaki lakes, New Zealand, was studied from 1975 to 1984. Age and growth were determined by length frequency analysis and by back calculation of growth from annual rings laid down on otoliths and scales. Growth was also determined for fish reared at three hatcheries. Salmon resident in Lake Ohau, a large deep oligotrophic lake, grew relatively slowly. Mature fish from two to five years of age averaged 182, 224, 263, and 329 mm in length, respectively. Growth was more rapid in Lakes Benmore, Aviemore, and Waitaki, which are relatively shallow and productive hydro-electric storage reservoirs. In Lake Benmore, mature fish from two to five years of age averaged 243, 288, 352, and 450 mm in length, respectively. Fish reared in hatcheries grew faster than in the wild with some averaging 382 mm at two years of age. Food supply was considered to be the principal factor influencing growth rates. The fish originated from anadromous ancestors in the Frazer River, Canada, and have been resident in fresh water in New Zealand for about 18 to 25 generations; they retain the capacity for rapid growth in favourable environments.

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Limnetic feeding behavior of juvenile sockeye salmon in Lake Washington and predator avoidance

Cited by 62 publications

References 0 publications

Follow the light—diurnal and seasonal variations in vertical distribution of the mesopelagic fish Maurolicus muelleri

Follow the light—diurnal and seasonal variations in vertical distribution of the mesopelagic fish Maurolicus muelleri

Effects of climate change on zooplankton community interactions in an Alaskan lake

Growth of landlocked sockeye salmon (Oncorhynchus nerka) in New Zealand

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