The effect of invertebrate diets on lipids, fatty acid composition and physiological condition of pike larvae (Esox lucius)

Desvilettes, Christian; Bourdier, Gilles; Breton, J. C.

doi:10.1111/j.1439-0426.1997.tb00119.x

Cited by 11 publications

(12 citation statements)

References 34 publications

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“…Fatty-acid profiles of our prey were similar to those reported for other wild invertebrates (Desvilettes, Bourdier & Breton, 1997;Hinderer et al, 2012;Lau et al, 2012), particularly the low proportions of polyunsaturated fatty-acid levels found in Chironomidae spp. Fatty-acid profiles of our prey were similar to those reported for other wild invertebrates (Desvilettes, Bourdier & Breton, 1997;Hinderer et al, 2012;Lau et al, 2012), particularly the low proportions of polyunsaturated fatty-acid levels found in Chironomidae spp.…”

Section: Copepods Versus Mysissupporting

confidence: 81%

“…Dealing with large variation in coefficients may be a realisation of working across the invertebrate-vertebrate interface. Fatty-acid profiles of our prey were similar to those reported for other wild invertebrates (Desvilettes, Bourdier & Breton, 1997;Hinderer et al, 2012;Lau et al, 2012), particularly the low proportions of polyunsaturated fatty-acid levels found in Chironomidae spp. (Goedkoop et al, 1998;Sushchik et al, 2003).…”

Section: Copepods Versus Mysissupporting

confidence: 81%

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Fatty‐acid profiles of juvenile lake trout reflect experimental diets consisting of natural prey

et al. 2016

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Summary It is relatively well‐known that fatty‐acid profiles of consumers reflect their diets. However, with fish, controlled studies that trace fatty‐acid profiles of natural prey into consumers are lacking. We asked whether lake trout (Salmonidae: Salvelinus namaycush) fatty‐acid profiles reflect diets at 4, 8 or 14 weeks after feeding began. We also evaluated if calibration coefficients were similar for each diet, a key assumption of quantitative fatty‐acid signature analysis (QFASA). In this study, juvenile lake trout were fed commercially available frozen diets of chironomids (Chironomidae: Chironomus spp.), copepods (Cyclopoida spp.), or Mysis (Mysidae: Mysis relicta) over a 14‐week period. Accurate classification of lake trout into a priori diet groups was attained after 8 weeks of feeding. Calibration coefficients were significantly different among diet groups, especially for lake trout that were fed chironomids, suggesting that diet‐specific modifications to fatty acids occurred. Chironomid‐fed lake trout grew significantly larger than others despite consuming prey that lacked long‐chain essential fatty acids. Furthermore, chironomid‐fed lake trout provide evidence for the conversion of 18:3n‐3 into longer chain n‐3 fatty acids. Our results call for additional studies to better understand how fatty acids reflect dietary origins prior to employing QFASA on wild freshwater fishes. QFASA could provide accurate diet estimates for freshwater fishes with low‐diversity diet compositions, if calibration coefficients for each predator–prey relationship are incorporated.

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Section: Copepods Versus Mysissupporting

confidence: 81%

Section: Copepods Versus Mysissupporting

confidence: 81%

Fatty‐acid profiles of juvenile lake trout reflect experimental diets consisting of natural prey

et al. 2016

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Section: Discussionsupporting

confidence: 91%

“…The observed temporal progression from copepods to large cladocerans is consistent with other studies on larval pike diets (Desvilettes et al , ; Bry et al ). The amount of specific essential fatty acids present in zooplankton prey is known to affect larval pike growth (Engström‐Öst et al ) although both copepods and cladocerans meet nutritional requirements of larval pike (Desvilettes et al ). Cladocerans have lower levels of docosahexaenoic acid (DHA) than copepods (Smyntek et al ), which is known to be essential in the development of neural tissue in higher vertebrates and is needed in large quantities during early larval development (Bell et al ).…”

Section: Discussionsupporting

confidence: 91%

“…When exogenous feeding begins, swim‐up larvae initially consume zooplankton, and must encounter appropriate and abundant prey soon after yolk‐sac absorption to survive (Cushing , ). Northern pike larvae prefer large zooplankton (Lehtiniemi et al ; Salonen et al ), and exhibit a progression in the taxa they consume, beginning with copepods and later switching to large cladocerans and insect larvae (Desvilettes et al , ; Bry et al ). Copepods display much faster swimming speeds than cladocerans (Kerfoot ), and this dietary switch may be related to difficulties in capturing the relatively larger copepods.…”

mentioning

confidence: 99%

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Prey selection by larval northern pike (Esox lucius) exposed to different zooplankton assemblages representing seasonally flooded wetland and nearshore bay habitats

Massa

Farrell

2018

Limnology & Oceanography

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A prey selection experiment was designed to investigate whether northern pike larvae, at swim-up and advanced stages, select similar zooplankton prey in seasonally flooded wetlands and nearshore littoral zones, which represent primary St. Lawrence River northern pike spawning habitats. At first exogenous feeding, naïve swim-up larvae exposed to both wetland and nearshore zooplankton were generalist consumers, feeding primarily on cyclopoid copepods and small cladocerans. No positive selection was observed for any prey taxa. Advanced larvae began to exhibit positive selection for large cladocerans. Significantly larger-sized prey were consumed by advanced larvae given wetland vs. nearshore zooplankton. Large cladocerans made up a greater proportion of the assemblage originating from seasonally flooded wetlands vs. nearshore habitats, and may explain the difference in size selectivity. Our laboratory experiment suggests pike hatched in wetland environments have greater access to preferred, large cladoceran prey, and differences in spatial and temporal spawning distributions may have important implications for zooplankton availability and hence food consumption during the critical larval period.

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Comparison of ovum lipid provisioning among lake whitefish, walleye and northern pike co-habiting in Bay of Quinte (Lake Ontario, Canada)

Wiegand

Johnston

Porteous

et al. 2014

Journal of Great Lakes Research

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The effect of invertebrate diets on lipids, fatty acid composition and physiological condition of pike larvae (Esox lucius)

Cited by 11 publications

References 34 publications

Fatty‐acid profiles of juvenile lake trout reflect experimental diets consisting of natural prey

Fatty‐acid profiles of juvenile lake trout reflect experimental diets consisting of natural prey

Prey selection by larval northern pike (Esox lucius) exposed to different zooplankton assemblages representing seasonally flooded wetland and nearshore bay habitats

Comparison of ovum lipid provisioning among lake whitefish, walleye and northern pike co-habiting in Bay of Quinte (Lake Ontario, Canada)

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