Prey size selection in piscivorous pikeperch (<i>Stizostedion lucioperca</i>) includes active prey choice

Turesson, Håkan; Persson, Anders; Brönmark, Christer

doi:10.1034/j.1600-0633.2002.00019.x

Cited by 79 publications

(85 citation statements)

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“…3 está diretamente relacionado ao sucesso no forrageamento, pois a resposta de fuga da presa é altamente correlacionada com o tamanho do corpo, que conforme aumenta, melhora a performance de natação. A seleção de uma presa pelo tamanho específico, provavelmente seja mais importante que a seleção pelo tipo de presa (Tonn et al 1992, Juanes et al 2002, uma vez que em ambientes aquáticos, o tamanho é um dos principais determinantes da taxa de encontro ou sucesso de captura (Turesson et al 2002). Assim, a teoria de forrageamento ótimo prediz que o predador consome presas que tenham maior valor energético e que possam maximizar o seu fitness (Gerking 1994).…”

Section: Discussionunclassified

“…De acordo com Turesson et al (2002), a predação seletiva é uma característica comum entre a maioria dos predadores e tem sido alvo de muitos estudos. Um dos principais fatores que interferem na escolha do alimento pelos peixes é a sua disponibilidade no ambiente, sendo que para as espécies piscívoras, que perseguem suas presas em movimento, a coincidência de eco-áreas, o tipo de comportamento, a atividade e o tamanho das presas, tornam-se, também, fatores muito importantes (Popova, 1978).…”

Section: Introductionunclassified

“…Um dos principais fatores que interferem na escolha do alimento pelos peixes é a sua disponibilidade no ambiente, sendo que para as espécies piscívoras, que perseguem suas presas em movimento, a coincidência de eco-áreas, o tipo de comportamento, a atividade e o tamanho das presas, tornam-se, também, fatores muito importantes (Popova, 1978). Entretanto, Turesson et al (2002), argumentam que o tamanho dos peixes é o maior determinante da taxa de encontro ou sucesso na captura, porque a maioria das populações de predadores e presas é estruturada através dessa variável.…”

Section: Introductionunclassified

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Uso de recursos alimentares por peixes imaturos e adultos de espécies piscívoras em uma planície de inundação neotropical

Bozza

Hahn

2010

Biota Neotrop.

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Abstract:The aim of this study was to evaluate the use of food resources by juveniles and adults of Acestrorhynchus lacustris, Hemisorubim platyrhynchos, Hoplias aff. malabaricus, Plagioscion squamosissimus, Pseudoplatystoma corruscans e Salminus brasiliensis from the upper Paraná River floodplain, sampled quarterly between March 2007 and December 2008. The quantitative trophic composition was obtained by prey volume (% volume) and diet niche breadth of each piscivorous species, as well as trophic relationships among them through diet similarity and prey size. The diet of the species was composed of fish-preys (42 species), crustaceans and insects, with ontogenetic diet changes, except to P. corruscans. The niche breadth was high to H. aff. malabaricus adults and low to P. corruscans adults and P. squamosissimus juveniles. Diet similarity was high to Characidae species consumers and low to P. squamosissimus juveniles, which consumed mainly crustaceans. Positive correlation was found between prey and predator size, however, each piscivorous species consumed different prey sizes, showing no correlation among them. Results showed that the six species consumed fish since juveniles, however, with low diet similarity intra and inter specific to most of them, and the prey size consumed increased in relation to predator size and varied among species. Thus, the piscivorous species diet depends of prey species distribution and colonization, morphology and feeding behavior of the prey as well as the predator. Resumo: Este estudo teve como objetivo avaliar o uso dos recursos alimentares por indivíduos imaturos e adultos de Acestrorhynchus lacustris, Hemisorubim platyrhynchos, Hoplias aff. malabaricus, Plagioscion squamosissimus,Pseudoplatystoma corruscans e Salminus brasiliensis, da planície de inundação do alto Rio Paraná, coletados trimestralmente entre março de 2007 e dezembro de 2008. Foi avaliada a composição quantitativa da dieta através da obtenção do volume das presas (% volume) e amplitude de nicho trófico de cada uma das espécies, bem como as inter-relações tróficas entre elas, através da similaridade entre as dietas e tamanho das presas. A dieta das seis espécies foi composta por peixes-presa (42 espécies), crustáceos e insetos, sendo que todas elas, com exceção de P. corruscans, mostraram alterações ontogenéticas. A amplitude de nicho foi maior para H. aff. malabaricus adultos e menor para P. corruscans adultos e P. squamosissimus imaturos. A similaridade na dieta foi maior para aquelas espécies que consumiram Characidae e menor para P. squamosissimus imaturos, os quais consumiram preferencialmente crustáceos. Houve correlação positiva entre o tamanho da presa e do predador, porém cada espécie consumiu presas de tamanhos diferentes, mostrando que elas não são correlacionadas. Os resultados demonstraram que as seis espécies consumiram peixes desde as fases imaturas, porém com pouca similaridade intra e inter-específica na dieta para a maioria delas, e que o tamanho das presas consumidas aumentou em relação ao ta...

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Section: Discussionunclassified

Section: Introductionunclassified

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Uso de recursos alimentares por peixes imaturos e adultos de espécies piscívoras em uma planície de inundação neotropical

Bozza

Hahn

2010

Biota Neotrop.

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“…It is believed that this is determined by the lower risk of failure to catch them. Those who are larger swim vigorously and cause real danger of kleptoparasitism (Nilsson and Bronmark, 1999;2000;Tuersson et al, 2006). The opposite conclusion is reached by Hubenova et al (2013), who found that pike prefers to feed on larger specimens.…”

Section: Introductionmentioning

confidence: 92%

Prey size selectivity of pikeperch (Sander Lucioperca L.) fed with topmouth gudgeon (Pseudorasbora Parva Temminck & Schlegel)

Gevezova-Kazakova¹,

Yankova²,

Hubenova³

et al. 2017

AST

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Abstract. The aim of this study is to examine the size selectivity of the pikeperch fed with one of the most widespread weed fish in fish farms, such as topmouth gudgeon (Pseudorasbora parva Temminck & Schlegel). Topmouth gudgeon (Pseudorasbora parva Temminck & Schlegel), separated in two size groups: large -group 1 (body weight of the specimens 8. 63 ± 2.68 g, total length 9.58 ± 0.92 cm, and During the experimental period it was observed that pikeperch preferred to feed on smaller individuals, the difference in the number of consumed small and large fish is approximately 2 times (70 to 34, respectively).Keywords: pikeperch (Sander lucioperca L.), prey, topmouth gudgeon (Pseudorasbora parva Temminck & Schlegel), size, selectivity, food AGRICULTURAL SCIENCE AND TECHNOLOGY, VOL. 9, No 3, pp -, 2017 209 212 DOI: 10.15547/ast.2017 IntroductionPredation as a form of relationship between different species is essential for the formation of fish populations. Predators can affect not only species composition, but also the size structure (Bronmark et al., 1995). The presence of predatory fish in water bodies affects significantly the entire ecosystem and can change the feeding behavior or habitat preference of other species (Magnehagen, 2006;Persson et al., 1996).The direct effect of their presence is expressed in reduction in the number of preys, important in this respect being the selectivity of eating, which is defined as total quality for predators (Beyerle and Williams, 1968;Ivlev, 1977; Hart and Hamrin, 1988; Einfalt and Wahl, 1997).The interaction between predator and prey in aquatic ecosystems is highly dependent on their size (Paine, 1976;Olson, 1996). According to Nilsson and Bromark (1999), pike (Esox lucius) prefers to eat smaller prey when there is such choice presented. It is believed that this is determined by the lower risk of failure to catch them. Those who are larger swim vigorously and cause real danger of kleptoparasitism (Nilsson and Bronmark, 1999;2000;Tuersson et al., 2006). The opposite conclusion is reached by Hubenova et al. (2013), who found that pike prefers to feed on larger specimens.The maximum size of prey that predator may eat depends on the morphological constraints of the oral apparatus (Werner, 1974;Nilsson and Bronmark, 2000). In this connection, from entirely anatomical viewpoint the pikeperch has significantly less capacity compared to European pike and Wels catfish.Essential for the choice of prey, except for size, is the shape and height of the body, swimming speed, accessibility, level of satiation of predators, the existence of competition, etc. According to Petrova et al. (1993;1993a) the food spectrum of pikeperch is a reflection of the species composition, abundance, biological and physiological state of the ichthyofauna in the environment. In practice, this choice is determined by a complex set of factors that occur in specific conditions.The issue of selectivity of pikeperch (Sander lucioperca L.) with respect to consumed fish species, including in terms of their ...

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“…Predation may affect prey populations both directly and indirectly. The direct effects of predation can include the death and/or injury of the prey (Wootton, 1990), the reduction of prey abundance or changes in the prey size-frequency distribution (Turesson et al, 2002). Behavioural alterations in a prey species under predation risk can be an indirect effect of predation.…”

Section: Introductionmentioning

confidence: 99%

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Özyurt¹,

Mavruk²,

Kiyağa³

2012

Turk. J. Fish. Aquat. Sci.

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This study examines temporal changes and predator size-dependent changes in the important dietary groups and feeding intensity of pikeperch Sander lucioperca. Monthly experimental fishing operations were conducted for sampling purposes using gillnets with different mesh sizes between July 2009 and June 2010. The results showed significant changes in the important dietary items as a function of predator size. Diptera and mysids were the most important groups for pikeperch smaller than 19 cm, whereas fish were most important for pikeperch larger than 19 cm. The important dietary items also varied significantly over time. The most important dietary groups were mysids during December, January and February; diptera during March and April; and teleosts during the other months. The feeding intensity of pikeperch peaks in October and March and then progressively decreases between October and February. The decrease in feeding intensity was related to the reproductive period.

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Prey size selection in piscivorous pikeperch (Stizostedion lucioperca) includes active prey choice

Cited by 79 publications

References 55 publications

Uso de recursos alimentares por peixes imaturos e adultos de espécies piscívoras em uma planície de inundação neotropical

Uso de recursos alimentares por peixes imaturos e adultos de espécies piscívoras em uma planície de inundação neotropical

Prey size selectivity of pikeperch (Sander Lucioperca L.) fed with topmouth gudgeon (Pseudorasbora Parva Temminck & Schlegel)

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