Feeding Biology and Food Composition in &lt;i&gt;Pelophylax ridibundus&lt;/i&gt; (Pallas 1771) in the Iranian Plateau

Pesarakloo, Alireza; Rastegar-Pouyani, N.; Rastegar‐Pouyani, Eskandar; Najibzadeh, Masoumeh; Shakarami, Jahanshir; Kami, Haji Gholi; Shayestehfar, Alireza

doi:10.30906/1026-2296-2019-24-2-91-98

Cited by 9 publications

(5 citation statements)

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“…For example, a survey that investigated prey items in P. nigromaculatus in rice paddies found that the order Coleoptera was the most common prey animal with the orders Hymenoptera (Formicidae), Araneae, and Hemiptera also being consumed, whereas Dermaptera was not common (Hirai and Matsui, 1999). It has been reported that some other Pelophylax species consume insects in the order Coleoptera, Formicidae, and Diptera (Hirai, 2002; Burghelea et al, 2010; Cicort-Lucaciu et al, 2013; Pesarakloo et al, 2017; Pafilis et al, 2019; Özcan et al, 2021). In addition, many studies that have characterized the diets of frogs have shown that the most common prey animals are members of the orders Hymenoptera (Formicidae), Coleoptera, Hemiptera, Diptera, Araneae, and Isopoda (Kam et al, 1995; Maneyro and Rosa, 2004; Clcek and Mermer, 2007; Sarashina and Yoshida, 2021).…”

Section: Discussionmentioning

confidence: 99%

Feeding Habits of Frogs in the Tottori Sand Dunes, Tottori Prefecture, Western Japan

Chiba,

Karasawa

2023

Current Herpetology

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Section: Discussionmentioning

confidence: 99%

Feeding Habits of Frogs in the Tottori Sand Dunes, Tottori Prefecture, Western Japan

Chiba,

Karasawa

2023

Current Herpetology

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“…On the other hand, our results show higher predation rates on native amphibians by P. ridibundus water frogs from the invaded range than previously shown from other stomach-content-based studies carried out in the native range (Table 2). Indeed, in most of these studies, no native amphibians were predated by native marsh frogs [33][34][35][36][37][38][64][65][66][67][68], whereas in a few others, frequency of predation on heterospecific amphibians ranked between 0.10 and 4.61% [39][40][41][42]. These differences might be due to differences in the sampled habitats and the study design.…”

Section: Predation On Nativesmentioning

confidence: 99%

“…In their natural range, the diet of marsh frogs has been studied in freshwater habitats and indicates little or no predation on native amphibians. Most reported cases were cannibalism of metamorphosed individuals and tadpoles [33][34][35][36][37][38], whereas newts, tree frogs, and tadpoles were rarely detected in the diet [39][40][41][42]. Furthermore, a recent behavioral observation also confirmed the ability of marsh frogs to forage on tree frogs [43].…”

Section: Introductionmentioning

confidence: 99%

Predation Pressure of Invasive Marsh Frogs: A Threat to Native Amphibians?

2021

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Anurans have been introduced in many parts of the world and have often become invasive over large geographic areas. Although predation is involved in the declines of invaded amphibian populations, there is a lack of quantitative assessments evaluating the potential risk posed to native species. This is particularly true for Pelophylax water frogs, which have invaded large parts of western Europe, but no studies to date have examined their predation on other amphibians in their invaded range. Predation of native amphibians by marsh frogs (Pelophylax ridibundus) was assessed by stomach flushing once a month over four months in 21 ponds in southern France. Nine percent of stomachs contained amphibians. Seasonality was a major determinant of amphibian consumption. This effect was mediated by body size, with the largest invaders ingesting bigger natives, such as tree frogs. These results show that invasive marsh frogs represent a threat through their ability to forage on natives, particularly at the adult stage. The results also indicate that large numbers of native amphibians are predated. More broadly, the fact that predation was site- and time-specific highlights the need for repeated samplings across habitats and key periods for a clear understanding of the impact of invaders.

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“…Some anurans, particularly ranids, such as bullfrogs ( Lithobates castebeianus ) or water frogs ( Pelophylax ssp. ), remain associated with aquatic habitats during their active period but typically live at the littoral or water surface ecotone where they feed both on terrestrial and aquatic prey (Hirai, 2004; Jancowski & Orchard, 2013; Liu et al, 2015; Pesarakloo et al, 2017; Plitsi et al, 2016; Werner et al, 1995). These particular feeding strategies therefore result in complex trophic interactions with aquatic and surrounding terrestrial communities, both of which endure predation pressure from post‐metamorphic anurans.…”

Section: Introductionmentioning

confidence: 99%

Functional and temporal facets of predation by marsh frogs across the aquatic–terrestrial ecotone of ponds and implications in the context of biological invasions

Pille,

Pinto,

Denoël

2023

Freshwater Biology

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Freshwater vertebrate predators can exert trophic control over aquatic and littoral communities. Among these predators, post‐metamorphic anurans exhibit a biphasic trophic spectrum by foraging in both terrestrial and aquatic habitats. Many studies have described their diet through the classical taxonomic classification of prey. However, these singular diet habits imply a complex, time‐dependent, realised trophic niche in which predation pressure occurs over many consumers that fill diverse functional roles throughout the aquatic and terrestrial interface of ponds. Among anurans, marsh frogs (Pelophylax ridibundus) have been introduced outside their range in many countries and are now invading nationwide areas, particularly in western Europe. Focusing on their foraging specificities will therefore further the understanding of the trophic role of these alien taxa in pond environments that are highly colonised. We collected stomach contents from 761 marsh frogs from introduced populations in 19 ponds in southern France once a month over 4 months of their active period in the spring. The populations of marsh frogs were studied in a geographic area that was devoid of native water frogs and their origin tracks back as far as south‐eastern Europe (i.e., more than 1,000 km from the studied sites, as evidenced previously by genetic analyses). Marsh frogs exhibited generalist and opportunistic feeding strategies. The trophic niche was strongly asymmetrical and broader in the terrestrial environment than in the aquatic environment. However, predation occurred in communities of large freshwater macroinvertebrates and amphibians. Whereas the composition of the terrestrial diet exhibited strong seasonal variations, predation pressure was continuously exerted on the same aquatic organisms over time. Primary consumers and consumers at higher trophic levels frequenting aquatic benthic, vegetated, pelagic, and surface microhabitats were preyed upon, underlying the multidimensional extent of the predation spectrum. The diversified feeding strategies of alien marsh frogs highlight the extent of potential ecological control by predation on pond communities. Because of their wide trophic niche, they exert predation pressure on most pond organisms, triggering possible top‐down control of the overall aquatic communities. Our results show that the integration of the functional traits and microhabitats of consumed prey may aid in a better understanding of how predation by anurans may target specific components of pond communities. More particularly, this study raises concerns about the predatory role of introduced anurans in the context of biological invasions.

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Feeding Biology and Food Composition in <i>Pelophylax ridibundus</i> (Pallas 1771) in the Iranian Plateau

Cited by 9 publications

References 0 publications

Feeding Habits of Frogs in the Tottori Sand Dunes, Tottori Prefecture, Western Japan

Feeding Habits of Frogs in the Tottori Sand Dunes, Tottori Prefecture, Western Japan

Predation Pressure of Invasive Marsh Frogs: A Threat to Native Amphibians?

Functional and temporal facets of predation by marsh frogs across the aquatic–terrestrial ecotone of ponds and implications in the context of biological invasions

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