Food habits, ontogenetic diet shift and selectivity in <i>Zeus faber</i> Linnaeus, 1758

Στεργίου, Κωνσταντίνος Ι.; Fourtouni, H.

doi:10.1111/j.1095-8649.1991.tb04389.x

Cited by 76 publications

(88 citation statements)

References 35 publications

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“…Prey switching has been documented many times in a range of different systems (e.g. Stergiou & Fourtouni 1991, Aarnio et al 1996, Olson 1996, Dawe et al 1998, Merigoux & Ponton 1998, Manderson et al 1999, 2000, Scharf & Schlicht 2000. For example, predatory fish often change diet as alternative prey become available (e.g.…”

Section: What Constitutes 'Shallow Water'?mentioning

confidence: 99%

Are there really few piscivorous fishes in shallow estuarine habitats?

Sheaves¹

2001

Mar. Ecol. Prog. Ser.

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Shallow estuarine habitats throughout the world are recognised as valuable nursery grounds for juvenile fishes. It is often suggested that this is due, at least in part, to the occurrence of low numbers of piscivorous fishes in these habitats. This idea is not confined to particular habitat types, but has been used in reference to a range of habitats, including both vegetated and unvegetated areas. I evaluate the proposition that there are few piscivorous fishes in shallow estuarine habitats, and suggest that the proposition is ill-defined, with little unequivocal supporting or contradictory evidence. To make any sense, the proposition must be evaluated relative to some other habitat, something often not addressed in previous studies. Additionally, including the full range of potentially piscivorous fishes is important if the role of predation is to be understood. Most studies have considered only large piscivorous fishes. This is unfortunate when the proposition logically relates to an advantage for small juvenile fishes. There is considerable evidence that, in addition to large piscivorous fishes, small juvenile fishes are extensively preyed upon both by juveniles of the large piscivorous species and by a range of other small species that include a large component of fish in their diets. In addition, many of the prey species may, themselves, switch opportunistically to piscivorous feeding. Not only are small piscivores numerous, but because of their size they are much more likely to access shallow waters than large piscivores. Even when the full range of piscivorous fishes are considered, it is not clear that the question of the abundance of piscivores in shallow waters should be the real focus of interest. Rather the crucial question is whether or not predator-induced mortality is reduced in shallow estuarine habitats.

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Section: What Constitutes 'Shallow Water'?mentioning

confidence: 99%

Are there really few piscivorous fishes in shallow estuarine habitats?

Sheaves¹

2001

Mar. Ecol. Prog. Ser.

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“…Most available studies of the effects of ontogenetic niche shifts assume that individuals go through only a single ontogenetic niche shift during their life history , van de Wolfshaar et al 2006, Schreiber and Rudolf 2008, Guill 2009), whereas the life history of many top predators is characterized by the occurrence of multiple ontogenetic niche shifts (Winemiller 1989, Persson and Greenberg 1990, Stergiou and Fourtouni 1991, Flowers and Graves 1995, Lima 1998, Garcia-Berthou 2002, Martins et al 2002, Galarowicz et al 2006, Hammerschlag-Peyer and Layman 2012. The influence of two ontogenetic niche shifts in predator life history was studied in detail in a size-structured model analysis describing the life history of Atlantic cod (Gadus morhua; van Leeuwen et al 2013; see Plate 1) and was shown to result in a bottleneck in the prepiscivorous life stage (feeding on the intermediate resource), preventing predator population growth, and thereby also its top-down control of the prey fish species (van Leeuwen et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Ontogenetic specialism in predators with multiple niche shifts prevents predator population recovery and establishment

Leeuwen

Huss

Gårdmark

et al. 2014

Ecology

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Ontogenetic specialism in predators with multiple niche shifts prevents predator population recovery and establishment van Leeuwen, A.; Huss, M.; Gårdmark, A.; de Roos, A.M. Published in: Ecology DOI:10.1890/13-0843.1 Link to publicationCitation for published version (APA): van Leeuwen, A., Huss, M., Gårdmark, A., & de Roos, A. M. (2014). Ontogenetic specialism in predators with multiple niche shifts prevents predator population recovery and establishment. Ecology, 95(9), 2409-2422. https://doi.org/10.1890/13-0843.1 General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Abstract. The effects of ontogenetic niche shifts on community structure and dynamics are underexplored, despite the occurrence of such shifts in the majority of animal species. We studied the form of niche shifts in a predator that exhibits multiple ontogenetic niche shifts, and analyzed how this life history complexity affects the size-structured predator-prey dynamics in the system. The predator represents either an ontogenetic generalist, exhibiting a partial shift to predation (in which case an alternative resource is also available) or an ontogenetic specialist, exhibiting a complete shift (in which case the predator depends entirely on predation). We showed two effects on community dynamics from accounting for a complete niche shift to predation: (1) occurrence of alternative stable community states (coexistence and a prey-only community state) and (2) occurrence of deterministic extinction following initially successful invasion (predators can invade an equilibrium with only prey, but are bound to go extinct after a few generations). Both phenomena are due to the match or mismatch in the timing of predators and suitably sized prey and the growth trajectory of the predator, which is plastic, due to the population feedback on available resources. In the case of persistence without invasion (alternative stable community states), slow growth during the pre-piscivorous life stage is necessary to stay in tune with the prey cycle; in the case of extinction following invasion, slow growth through the pre-piscivorous life stage causes the predator to reach the completely piscivorous stage when there is no prey available to feed upon. Somatic growth rates are directly coupled to food availability, which, i...

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“…The GI tract of herbivores is typically longer than that of carnivores and possesses specialized regions for the fermentation of plant material (Stevens and Hume, 1995;Karasov and Hume, 1997;Mackie, 2002). Equally apparent is how organisms are able to face routine fluctuations in the amount and type of food consumed due to seasonal changes in food availability, ontogenetic shifts in diet, reproductive status and alternating foraging and feeding strategies (O'Brien et al, 1989;Stergiou and Fourtouni, 1991;Koertner and Heldmaier, 1995;Johnson et al, 2001). In response to such shifts in feeding habits, and thus digestive demand, species modulate gut performance to match pace with digestive load (Hammond and Diamond, 1994;Piersma and Lindström, 1997;Weiss et al, 1998).…”

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confidence: 99%

Adaptive regulation of digestive performance in the genusPython

Ott

Secor

2007

Journal of Experimental Biology

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IntroductionThe integration of a species' ecology and physiology is exemplified in the adaptive interplay between their feeding ecology and digestive physiology (Karasov and Diamond, 1988;McWilliams et al., 1997;Secor, 2005a). A well-known example of this is the adaptive correlation between food habits (i.e. herbivory and carnivory) and the morphology and function of the gastrointestinal (GI) tract. The GI tract of herbivores is typically longer than that of carnivores and possesses specialized regions for the fermentation of plant material (Stevens and Hume, 1995;Karasov and Hume, 1997;Mackie, 2002). Equally apparent is how organisms are able to face routine fluctuations in the amount and type of food consumed due to seasonal changes in food availability, ontogenetic shifts in diet, reproductive status and alternating foraging and feeding strategies (O'Brien et al., 1989;Stergiou and Fourtouni, 1991;Koertner and Heldmaier, 1995;Johnson et al., 2001). In response to such shifts in feeding habits, and thus digestive demand, species modulate gut performance to match pace with digestive load (Hammond and Diamond, 1994;Piersma and Lindström, 1997;Weiss et al., 1998). The plasticity of GI performance is manifested in morphological restructuring and/or functional regulation at the cellular level (Ferraris, 1994;Carey, 1990;Secor, 2005a).The adaptive capacity to regulate digestive performance in response to changes in digestive demand is well expressed by amphibian and reptile species that naturally experience long episodes of fasting (Secor, 2005a). Anurans that estivate during dry seasons and snakes that employ the sit-and-wait tactic of foraging, and thus eat infrequently, severely downregulate GI performance upon the completion of digestion, maintain a quiescent gut while fasting, and with feeding, rapidly upregulate digestive performance (Secor and Diamond, 2000;Secor, 2005b). The benefit of this trait is observed as a reduction in energy expenditure during the bouts of fasting. For example, during estivation, the metabolic rates of anurans are depressed by 70%, and the standard metabolic rates (SMR) of sit-and-wait foraging snakes are 47% less than that of active foraging snakes that only modestly regulate GI performance with feeding and fasting (Guppy and Withers, 1999;Secor and Diamond, 2000).For sit-and-wait foraging snakes, the correlation between infrequent feeding and wide regulation of intestinal performance has been investigated for only four speciesThe adaptive interplay between feeding habits and digestive physiology is demonstrated by the Burmese python, which in response to feeding infrequently has evolved the capacity to widely regulate gastrointestinal performance with feeding and fasting. To explore the generality of this physiological trait among pythons, we compared the postprandial responses of metabolism and both intestinal morphology and function among five members of the genus Python: P. brongersmai, P. molurus, P. regius, P. reticulatus and P. sebae. These infrequently feeding pythons inhabi...

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Food habits, ontogenetic diet shift and selectivity in Zeus faber Linnaeus, 1758

Cited by 76 publications

References 35 publications

Are there really few piscivorous fishes in shallow estuarine habitats?

Are there really few piscivorous fishes in shallow estuarine habitats?

Ontogenetic specialism in predators with multiple niche shifts prevents predator population recovery and establishment

Adaptive regulation of digestive performance in the genusPython

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