Intraguild predation and interference competition on the endangered dragonfly Aeshna viridis

Suutari, Erna; Rantala, Markus J.; Salmela, Jukka; Suhonen, Jukka

doi:10.1007/s00442-004-1559-6

Cited by 35 publications

(33 citation statements)

References 19 publications

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“…We show that preference for vegetation with a complex structure did not change when the larvae were removed from their natural habitat and placed in an environment without predators, prey and con-specifics. This contrasts with reports of the behaviour of other species of Odonata, in which habitat preferences of the larvae change in the absence of biotic interactions (Heads, 1986;Elkin & Baker, 2000;Suutari et al, 2004).…”

Section: Discussioncontrasting

confidence: 53%

“…Habitat preference could also be resource-based, since the larvae may be attracted to habitats with a high diversity and abundance of prey (Chilton, 1990) or mainly present in macrophytes with an architecture in which they are most efficient in capturing prey (Walsh, 1995). Finally, larvae may use vegetation as a refuge from predators (Dionne et al, 1990;Tolonen et al, 2003;Warfe & Barmuta, 2006) or because they are subject to less inter-or intra-specific competition in such habitats (Elkin & Baker, 2000;Suutari et al, 2004). These explanations are not mutually exclusive, which is one of the difficulties encountered when the structural complexity of a habitat is used to explain the differential use of structurally simple and complex macrophytes by macro-invertebrates.…”

Section: Introductionmentioning

confidence: 98%

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Preference of larvae of Enallagma cyathigerum (Odonata: Coenagrionidae) for habitats of varying structural complexity

Verdonschot¹,

Peeters²

2012

Eur. J. Entomol.

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Abstract. In macrophyte-rich lentic ecosystems, higher numbers of damselfly larvae occur in areas where there is structurally complex vegetation than in those where the plant architecture is relatively simple. Biotic interactions rather than morphological constraints are considered to underlie this pattern. We investigated whether the preference of the larvae of the damselfly Enallagma cyathigerum for a particular habitat was retained in absence of prey, predators and/or conspecifics. A series of laboratory choice experiments was conducted in which combinations of sediment and artificial plants differing in structural complexity were offered simultaneously to the larvae. Larvae preferred patches with structurally complex vegetation over patches with simply structured vegetation or lacking vegetation. Patches with simply structured vegetation were preferred over those with bare sediment, but the number of larvae showing a clear choice, which is regarded as an indication of the strength of the preference for a particular habitat, was relatively low compared to the number of individuals responding when complex vegetation was present. Based on the results presented, we conclude that the preference of E. cyathigerum larvae for structurally complex vegetation is independent of the presence of predators, prey or competitors. This suggests that this behaviour of the larvae is either learned or an innate response.

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Section: Discussioncontrasting

confidence: 53%

Section: Introductionmentioning

confidence: 98%

Preference of larvae of Enallagma cyathigerum (Odonata: Coenagrionidae) for habitats of varying structural complexity

Verdonschot¹,

Peeters²

2012

Eur. J. Entomol.

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“…Aggressive pelagic interference was also found to be responsible for reduced vertical space use by Dolly Varden (Salvelinus malma) living in sympatry with cutthroat trout (Oncorhynchus clarkii) (Hindar et al 1988). Furthermore, size is an important factor determining competitive displacements in predator communities in which intraguild predation occurs (Fedriani et al 2000;Suutari et al 2004), thus underlining the possibility of asymmetric interference competition between the larger pikeperch (55 cm maximum L T ) and the smaller perch (39.5 cm maximum L T ).…”

Section: Discussionmentioning

confidence: 97%

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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“…There are several possible explanations for the observed distributions of L. forficatus and S. sexspinosus at our field sites. Non-random spatial patterns can result from abiotic factors and differences in microhabitat use (Auerbach 1951;Lee 1980;Blackburn et al 2002), competition for contested resources (Hairston 1980;Blackburn et al 2002;Hickerson et al 2004), predator avoidance (Murray et al 2004), and intraguild predation (Suutari et al 2004). The outcomes of competitive interactions can be strongly affected by the physical attributes of the environments in which they occur (Park 1954;Connell 1961).…”

Section: Discussionmentioning

confidence: 99%

Edge effects and intraguild predation in native and introduced centipedes: evidence from the field and from laboratory microcosms

2005

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Human alteration of habitat has increased the proportion of forest edge in areas of previously continuous forest. This edge habitat facilitates invasion of exotic species into remaining fragments. The ability of native species to resist invasion varies and may depend on intrinsic variables such as dispersal and reproductive rates as well as external factors such as rate of habitat change and the density of populations of introduced species in edge habitat. We examined the distributional and competitive relationships of two members of the class Chilopoda, Scolopocryptops sexspinosus, a centipede native to the eastern US, and Lithobius forficatus, an exotic centipede introduced from Europe. We found that L. forficatus was most abundant in edge habitat and S. sexspinosus was most abundant in the interior habitat at our field sites. Although L. forficatus was present in habitat interiors at 11 of 12 sites, there was no correlation between fragment size and numbers of L. forficatus in interior habitat. The native centipede was rarely found occupying fragment edges. We used laboratory microcosms to examine potential competitive interactions and to indirectly assess prey preferences of the two species. In microcosms both species consumed similar prey, but the native centipede, S. sexspinosus, acted as an intraguild predator on the introduced centipede. Native centipedes were competitively superior in both intraspecific and interspecific pairings. Our results suggest that intraguild predation may aid native centipedes in resisting invasion of introduced centipedes from edge habitat.

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Intraguild predation and interference competition on the endangered dragonfly Aeshna viridis

Cited by 35 publications

References 19 publications

Preference of larvae of Enallagma cyathigerum (Odonata: Coenagrionidae) for habitats of varying structural complexity

Preference of larvae of Enallagma cyathigerum (Odonata: Coenagrionidae) for habitats of varying structural complexity

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

Edge effects and intraguild predation in native and introduced centipedes: evidence from the field and from laboratory microcosms

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