Match!

The influence of ontogenetic diet variation on consumption rate estimates: a marine example

Published on Dec 1, 2018in Scientific Reports4.011
· DOI :10.1038/s41598-018-28479-7
Christopher L. Lawson1
Estimated H-index: 1
(UNSW: University of New South Wales),
Iain M. Suthers36
Estimated H-index: 36
(UNSW: University of New South Wales)
+ 4 AuthorsStephanie Brodie7
Estimated H-index: 7
(UNSW: University of New South Wales)
Abstract
Consumption rates are the foundation of trophic ecology, yet bioenergetics models used to estimate these rates can lack realism by not incorporating the ontogeny of diet. We constructed a bioenergetics model of a marine predatory fish (tailor, Pomatomus saltatrix) that incorporated high-resolution ontogenetic diet variation, and compared consumption estimates to those derived from typical bioenergetics models that do not consider ontogenetic diet variation. We found tailor consumption was over- or under-estimated by ~5–25% when only including the most common prey item. This error was due to a positive relationship between mean prey energy density and predator body size. Since high-resolution diet data isn’t always available, we also simulated how increasing dietary information progressively influenced consumption rate estimates. The greatest improvement in consumption rate estimates occurred when diet variation of 2–3 stanzas (1–2 juvenile stanzas, and adults) was included, with at least 5–6 most common prey types per stanza. We recommend increased emphasis on incorporating the ontogeny of diet and prey energy density in consumption rate estimates, especially for species with spatially segregated life stages or variable diets. A small-moderate increase in the resolution of dietary information can greatly benefit the accuracy of estimated consumption rates. We present a method of incorporating variable prey energy density into bioenergetics models.
  • References (91)
  • Citations (2)
📖 Papers frequently viewed together
20152.92Oecologia
23 Citations
24 Citations
14 Citations
78% of Scinapse members use related papers. After signing in, all features are FREE.
References91
Newest
#1Joshua M. Borin (UW: University of Washington)H-Index: 1
#2Mary L. Moser (NMFS: National Marine Fisheries Service)H-Index: 22
Last. Cinde Donoghue (Washington Department of Natural Resources)H-Index: 3
view all 9 authors...
Habitat use can be complex, as tradeoffs among physiology, resource abundance, and predator avoidance affect the suitability of different environments for different species. Green sturgeon (Acipenser medirostris), an imperiled species along the west coast of North America, undertake extensive coastal migrations and occupy estuaries during the summer and early fall. Warm water and abundant prey in estuaries may afford a growth opportunity. We applied a bioenergetics model to investigate how varia...
5 CitationsSource
#1Kyle J. Hartman (WVU: West Virginia University)H-Index: 21
#2Olaf P. Jensen (RU: Rutgers University)H-Index: 30
The Eg–Uur River ecosystem in north-central Mongolia provides an opportunity to study salmonid species in a system that has already experienced significant climate change. These species are currently imperilled in Mongolian waters, with Baikal grayling (Thymallus arcticus baicalensis) listed as near-threatened and lenok (Brachymystax lenok) listed as vulnerable on the Mongolian red list. Air temperature records demonstrate that in the last 40 years Northern Mongolia's rate of warming has been th...
6 CitationsSource
#1Roxanne S. Beltran (UAF: University of Alaska Fairbanks)H-Index: 6
#2J. Ward Testa (UAA: University of Alaska Anchorage)H-Index: 1
Last. Jennifer M. Burns (UAA: University of Alaska Anchorage)H-Index: 24
view all 3 authors...
One of the crucial scientific challenges of this century is characterizing the vulnerability of ecosystems to climate change. Bioenergetics models can provide a theoretical construct for addressing specific physiological and ecological hypotheses about how individuals may respond; however, many models fail to link energy deficiencies with reproductive consequences, and thus cannot be used to predict population-level impacts. Here, we present an agent-based, ecophysiological model that simulates ...
6 CitationsSource
#1Hayden T. Schilling (UNSW: University of New South Wales)H-Index: 2
#2Julian M. HughesH-Index: 8
Last. Iain M. Suthers (UNSW: University of New South Wales)H-Index: 36
view all 6 authors...
Pelagic mesopredators are abundant in many marine ecosystems and exert strong top-down influence on food webs. We explored the dietary niche of Pomatomus saltatrix in eastern Australia, using a classification tree analysis to identify key factors driving diet variation. P. saltatrix was shown to be an opportunistic generalist predator which exhibited increased baitfish consumption, and decreased crustacean consumption, with increasing size. The classification tree analysis showed that body size ...
4 CitationsSource
#1W.M. PottsH-Index: 1
#2R.S.J. BealeyH-Index: 1
Last. A.R. ChildsH-Index: 1
view all 3 authors...
There is a growing need to incorporate biotic interactions, particularly those between predators and their prey, when predicting climate-driven shifts in marine fishes. Predators dependent on a narrow range of prey species should respond rapidly to shifts in the distribution of their prey, whereas those with broad trophic adaptability may respond to shifts in their prey by altering their diet. Small pelagic fishes are an extremely important component of the diet of many marine predators. However...
5 CitationsSource
#1Steven J. Cooke (Carleton University)H-Index: 69
#2Jacob W. Brownscombe (Carleton University)H-Index: 15
Last. Jayson M. Semmens (UTAS: University of Tasmania)H-Index: 29
view all 7 authors...
The generalized energy budget for fish (i.e., Energy Consumed = Metabolism + Waste + Growth) is as relevant today as when it was first proposed decades ago and serves as a foundational concept in fish biology. Yet, generating accurate measurements of components of the bioenergetics equation in wild fish is a major challenge. How often does a fish eat and what does it consume? How much energy is expended on locomotion? How do human-induced stressors influence energy acquisition and expenditure? G...
45 CitationsSource
#1David Deslauriers (South Dakota State University)H-Index: 5
#2Laura B. Heironimus (FWS: United States Fish and Wildlife Service)H-Index: 2
Last. Steven R. Chipps (South Dakota State University)H-Index: 21
view all 3 authors...
Factors affecting feeding and growth of early life stages of the federally endangered pallid sturgeon (Scaphirhynchus albus) are not fully understood, owing to their scarcity in the wild. In this study was we evaluated the performance of a combined foraging-bioenergetics model as a tool for assessing growth of age-0 pallid sturgeon in the Missouri River. In the laboratory, three size classes of sturgeon larvae (18–44mm; 0.027–0.329g) were grown for 7 to 14days under differing temperature (14–24°...
6 CitationsSource
#1Asia O. Armstrong (UQ: University of Queensland)H-Index: 2
#2Amelia J. Armstrong (UQ: University of Queensland)H-Index: 4
Last. Anthony J. Richardson (UQ: University of Queensland)H-Index: 50
view all 10 authors...
Large tropical and sub-tropical marine animals must meet their energetic requirements in a largely oligotrophic environment. Many planktivorous elasmobranchs, whose thermal ecologies prevent foraging in nutrient-rich polar waters, aggregate seasonally at predictable locations throughout tropical oceans where they are observed feeding. Here we investigate the foraging and oceanographic environment around Lady Elliot Island, a known aggregation site for reef manta rays Manta alfredi in the souther...
14 CitationsSource
#1Gabriel E. Machovsky-Capuska (USYD: University of Sydney)H-Index: 11
#2Alistair M. Senior (USYD: University of Sydney)H-Index: 16
Last. David Raubenheimer (USYD: University of Sydney)H-Index: 66
view all 4 authors...
The dietary generalist–specialist distinction plays a pivotal role in theoretical and applied ecology, conservation, invasion biology, and evolution and yet the concept remains poorly characterised. Diets, which are commonly used to define niche breadth, are almost exclusively considered in terms of foods, with little regard for the mixtures of nutrients and other compounds they contain. We use nutritional geometry (NG) to integrate nutrition with food-level approaches to the dietary niche and i...
45 CitationsSource
#1Zoë A. Doubleday (University of Adelaide)H-Index: 15
#2Thomas A. A. Prowse (University of Adelaide)H-Index: 16
Last. Bronwyn M. Gillanders (University of Adelaide)H-Index: 49
view all 11 authors...
Summary Human activities have substantially changed the world's oceans in recent decades, altering marine food webs, habitats and biogeochemical processes [1]. Cephalopods (squid, cuttlefish and octopuses) have a unique set of biological traits, including rapid growth, short lifespans and strong life-history plasticity, allowing them to adapt quickly to changing environmental conditions [2–4]. There has been growing speculation that cephalopod populations are proliferating in response to a chang...
49 CitationsSource
Cited By2
Newest
#1Georgina Dawson (UNSW: University of New South Wales)
#2Iain M. Suthers (UNSW: University of New South Wales)H-Index: 36
Last. James A. Smith (UNSW: University of New South Wales)H-Index: 15
view all 4 authors...
Abstract Forage fish are a vital trophic group in marine ecosystems and numerical models, linking plankton with higher trophic levels. The bioenergetics of a key forage fish in eastern Australia, yellowtail scad Trachurus novaezelandiae, was measured using static respirometry and bomb calorimetry to assess their trophic contribution as both predator and prey. The temperature-dependent standard metabolic rate (SMR) of yellowtail scad was 0.62 mgO2 g−0.79 h−1 and Q10 of 1.98. The SMR was used with...
Source
#1Jacob Weil (UVic: University of Victoria)
#2Marc Trudel (UVic: University of Victoria)H-Index: 24
Last. Francis Juanes (UVic: University of Victoria)H-Index: 36
view all 5 authors...
Determining how energy flows through ecosystems reveals underlying ecological patterns that drive processes such as growth and food web dynamics. Models that assess the transfer of energy from producers to consumers require information on the energy content or energy density (ED) of prey species. ED is most accurately measured through bomb calorimetry, but this method suffers from limitations of cost, time, and sample requirements that often make it unrealistic for many studies. Percent dry weig...
Source
#1Christopher L. Lawson (UQ: University of Queensland)
#2Lewis G. Halsey (University of Roehampton)H-Index: 28
Last. Anthony J. Richardson (UQ: University of Queensland)H-Index: 50
view all 8 authors...
Shark and ray megafauna have crucial roles as top predators in many marine ecosystems, but are currently among the most threatened vertebrates and, based on historical extinctions, may be highly susceptible to future environmental perturbations. However, our understanding of their energetics lags behind that of other taxa. Such knowledge is required to answer important ecological questions and predict their responses to ocean warming, which may be limited by expanding ocean deoxygenation and dec...
Source
#1Lori N. Ivan (MSU: Michigan State University)H-Index: 6
#2Benjamin R. Schmitt (MSU: Michigan State University)H-Index: 1
Last. Cheryl A. Murphy (MSU: Michigan State University)H-Index: 18
view all 6 authors...
Abstract Substantial natural reproduction of lake trout (Salvelinus namaycush) has not been achieved in the Great Lakes, except for Lake Superior and a few areas in Lake Huron, despite continued stocking efforts. Low thiamine levels in lake trout eggs, which can result in lethal and sublethal impacts (thiamine deficiency complex, TDC) on fry, may contribute to widespread recruitment failure in lake trout populations. We hypothesized that incorporation of sublethal impacts into dose-response curv...
3 CitationsSource