Can feeding of fish on terrestrial insects subsidize the nutrient pool of lakes?

Mehner, Thomas; Ihlau, Jan; Dörner, Hendrik; Hölker, Franz

doi:10.4319/lo.2005.50.6.2022

Cited by 64 publications

(73 citation statements)

References 48 publications

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“…comm., 2006) the same situation exists in Iberian rivers. Other factors that may contribute to the adaptability of the bleak include its ability to exploit a widespread spectrum of prey (Vollestad, 1985;Chappaz et al, 1987;Biro & Musko, 1995;Vasek & Kubecka, 2004;Mehner et al, 2005) and its temperature tolerance (from mountain lakes to the River Ebro with summer temperatures around 30ºC).…”

Section: Discussionmentioning

confidence: 99%

Expansión del alburno <i>Alburnus alburnus</i> (Linnaeus, 1758) (Actinopterygii, Cyprinidae) en la península Ibérica: el papel de los embalses

Vinyoles¹,

Robalo²,

Sostoa³

et al. 2007

GRAELLSIA

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Since its first record in a tributary of the Ebro basin in 1992, the bleak Alburnus alburnus has spread to almost the whole Iberian Peninsula. In this paper (based on electrofishing surveys in 598 localities), we provide information on the expansion of the bleak. We detail current distribution in the Ebro basin and the rivers of the Eastern Pyrenees and we report its presence in three other major Iberian drainages. Currently, the bleak is sympatric with 15 Iberian endemic species (58% of total Iberian endemic fish). The possible threats to the rich Iberian ichthyofauna caused by the presence of the bleak are discussed. The factors that promoted the extremely rapid expansion of this exotic cyprinid are examined, focusing on the role of reservoirs, which seem to favour its dispersal. Key words: cyprinids, distribution, fish introductions, Iberian Peninsula, invasive species. RESUMEN Expansión del alburno Alburnus alburnus (Linnaeus, 1758) (Actinopterygii, Cyprinidae) en la península Ibérica: el papel de los embalsesDesde su aparición en un afluente de la cuenca del Ebro en 1992, el alburno Alburnus alburnus se ha expandido en gran parte de la península Ibérica. El presente trabajo aporta nueva información sobre su expansión (basada en el muestreo de 598 localidades mediante pesca eléctrica). Se facilita información detallada sobre su actual distribución en la cuenca del Ebro y en cuencas al este de los Pirineos, así como nuevas citas de tres grandes cuencas hidrográficas. De acuerdo a su actual distribución en la península Ibérica, el alburno habita en simpatría con 15 especies endémicas (el 58% del total de

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Section: Discussionmentioning

confidence: 99%

Expansión del alburno <i>Alburnus alburnus</i> (Linnaeus, 1758) (Actinopterygii, Cyprinidae) en la península Ibérica: el papel de los embalses

Vinyoles¹,

Robalo²,

Sostoa³

et al. 2007

GRAELLSIA

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“…4A). Kawaguchi and Nakano (2001) found that terrestrial insects contribute about 50% of the total annual prey consumption of salmonids in some Japanese streams, while about 84% of the consumption in a cyprinid (Alburnus alburnus) in a German lake comes from terrestrial sources (Mehner et al 2005). In the presence of artificial light near a waterbody, terrestrial insects could become an even more important food source for fish.…”

Section: Ecosystem Functioningmentioning

confidence: 99%

The influence of artificial light on stream and riparian ecosystems: questions, challenges, and perspectives

et al. 2011

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Abstract. Artificial light at night is gaining attention for its potential to alter ecosystems. Although terrestrial ecologists have observed that artificial light at night may disrupt migrations, feeding, and other important ecological functions, we know comparatively little about the role artificial light might play in disrupting freshwater and riparian ecosystems. We identify and discuss four future research domains that artificial light may influence in freshwater and associated terrestrial ecosystems, with an emphasis on running waters: (1) dispersal, (2) population genetics and evolution, (3) ecosystem functioning, and (4) potential interactions with other stressors. We suggest that future experimental and modeling studies should focus on the effects of different spectral emissions by different light sources on freshwater organisms, the spatial and temporal scale over which artificial light acts, and the magnitude of change in light at night across the landscape relative to the distribution of running and standing waters. Improved knowledge about the effects of artificial light on freshwater ecosystems will inform policy decisions about changes to artificial light spectral emissions and distributions.

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“…No conclusion can be drawn from the gill net catches about the habitat use of small perch during night after the pikeperch stocking because only two individuals were caught during two sampling occasions. In contrast, perch of all size classes were observed resting in high numbers in shallow littoral areas before and after the pikeperch stocking during night (Haertel et al 2002; T. Schulze, personal observations) and were not even caught with active fishing methods in the pelagic zone (purse seine) during night in the pikeperch period (H. Dörner, unpublished data; see Mehner et al (2005b) for details on fishing methods). This indicates a nearly exclusive inactive use of littoral habitats by small perch during night in the pikeperch period, whereas active perch were caught in both habitats during night in the pikeperch-free period.…”

Section: Abundance and Distribution Of Preymentioning

confidence: 99%

Response of the residential piscivorous fish community to introduction of a new predator type in a mesotrophic lake

Schulze¹,

Baade²,

Dörner³

et al. 2006

Can. J. Fish. Aquat. Sci.

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Although the effects of introduced predators on prey populations in aquatic ecosystems have been studied frequently, less is known about the interactions between predators. We performed a whole-lake experiment by stocking a non-native top predator (pikeperch (Sander lucioperca)) to two residential piscivores (Eurasian perch (Perca fluviatilis) and northern pike (Esox lucius)). By analyzing spatial distribution, diet composition, growth, and consumption rates of the piscivores before and after pikeperch introduction, we tested how both density-dependent and trait-mediated responses affected interactions between the three predators. Total piscivore biomass increased 1.5 times and annual consumption by the piscivores increased 1.7 times after stocking, attributable to the stocked pikeperch and increased northern pike abundances. Abundance, distribution, and consumption data indicated that northern pike was hardly affected by pikeperch stocking and even increased its biomass, whereas piscivorous perch shifted its habitat use towards the littoral lake areas in response to competition with pikeperch. Furthermore, all piscivores increasingly fed on small perch. The forced habitat shift of piscivorous perch in combination with increased predation on small perch led to a decreased abundance of large perch, attributable to the compensatory effects of intraguild predation and cannibalism.Résumé : Alors que les effets des prédateurs introduits sur les populations de proies dans les écosystèmes aquatiques ont souvent été étudiés, les interactions entre les prédateurs eux-mêmes sont moins bien connues. Dans une expérience à l'échelle d'un lac, nous avons ajouté un prédateur supérieur non indigène (« pikeperch » (Sander lucioperca)) à un peuplement de poissons ichtyophages résidents (la perche (Perca fluviatilis) et le grand brochet (Esox lucius)).

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Can feeding of fish on terrestrial insects subsidize the nutrient pool of lakes?

Cited by 64 publications

References 48 publications

Expansión del alburno <i>Alburnus alburnus</i> (Linnaeus, 1758) (Actinopterygii, Cyprinidae) en la península Ibérica: el papel de los embalses

Expansión del alburno <i>Alburnus alburnus</i> (Linnaeus, 1758) (Actinopterygii, Cyprinidae) en la península Ibérica: el papel de los embalses

The influence of artificial light on stream and riparian ecosystems: questions, challenges, and perspectives

Response of the residential piscivorous fish community to introduction of a new predator type in a mesotrophic lake

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