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Cianferoni F, Lunghi E. Inferring on Speleomantes Foraging Behavior from Gut Contents Examination. Animals (Basel) 2023; 13:2782. [PMID: 37685046 PMCID: PMC10486601 DOI: 10.3390/ani13172782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023] Open
Abstract
We here provide the first comprehensive analysis and discussion on prey consumed by the European cave salamanders of the genus Speleomantes. Our study stems from the need to shed light on the still unknown foraging behavior adopted by Speleomantes cave salamanders. Starting from the published datasets on gut contents from all Speleomantes species (including hybrids), we here discuss additional information (i.e., species ecology, lower taxonomic level), which were systematically omitted from those data sets. We analyzed a data set consisting of 17,630 records from 49 categories of consumed prey recognized from gut contents of 2060 adults and juveniles Speleomantes. Flying prey accounted for more than 58% of the prey items, while elongated crawling prey accounted for no more than 16% of the diet within a single population. Among the total recognized prey items, only three can be surely ascribed to the group of strictly-cave species (i.e., troglobites), meaning that European cave salamanders mostly forage in surface environment, and therefore represent one of the major drivers of allochthonous organic matter in subterranean environments. Some of the consumed prey seemed to be aquatic, allowing us to hypothesize whether Speleomantes are able to catch prey from a shallow body water. Furthermore, European cave salamanders possess the ability to prey upon taxa characterized by particular anti-predator defenses, while morphological constraints seem to be the most important limit to prey consumption. For each specific case, we provide insights and propose hypotheses concerning the foraging behavior that need to be tested to properly understand the foraging behavior of this cryptic salamanders.
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Affiliation(s)
- Fabio Cianferoni
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), 50019 Firenze, Italy;
- Natural History Museum of the University of Florence, “La Specola”, 50125 Firenze, Italy
| | - Enrico Lunghi
- Department of Life Health and Environmental Sciences (MeSVA), Università degli Studi dell’Aquila, 67100 L’Aquila, Italy
- Associazione Natural Oasis, 59100 Prato, Italy
- Unione Speleologica Calenzano, 50041 Calenzano, Italy
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2
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Nicolosi G, Mammola S, Verbrugge L, Isaia M. Aliens in caves: the global dimension of biological invasions in subterranean ecosystems. Biol Rev Camb Philos Soc 2023; 98:849-867. [PMID: 36680327 DOI: 10.1111/brv.12933] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 01/05/2023] [Accepted: 01/10/2023] [Indexed: 01/22/2023]
Abstract
Alien species are a significant threat to natural ecosystems and human economies. Despite global efforts to address this challenge, the documented number of alien species is rapidly increasing worldwide. However, the magnitude of the impact of alien species may vary significantly across habitats. For example, some habitats are naturally less prone to biological invasions due to stringent abiotic and biotic characteristics, selecting for a limited number of introduced species possessing traits closely related to the native organisms. Subterranean ecosystems are quintessential examples of habitats with strong environmental filters (e.g. lack of light and scarcity of food), driving convergent adaptations in species that have successfully adapted to life in darkness. Despite these stringent environmental constraints, the number of records of alien species in subterranean ecosystems has increased in recent decades, but the relevant literature remains largely fragmented and mostly anecdotal. Therefore, even though caves are generally considered very fragile ecosystems, their susceptibility to impacts by alien species remains untested other than for some very specific cases. We provide the first systematic literature survey to synthesise available knowledge on alien species in subterranean ecosystems globally. This review is supported by a database summarising the available literature, aiming to identify gaps in the distribution and spread of alien invertebrate species in subterranean habitats, and laying the foundations for future management practices and interventions. First, we quantitatively assessed the current knowledge of alien species in subterranean ecosystems to shed light on broader questions about taxonomic biases, geographical patterns, modes of dispersal, pathways for introductions and potential impacts. Secondly, we collected species-specific traits for each recorded alien species and tested whether subterranean habitats act as ecological filters for their establishment, favouring organisms with pre-adaptive traits suitable for subterranean life. We found information on the presence of 246 subterranean alien species belonging to 18 different classes. The dominant alien species were invertebrates, especially insects and arachnids. Most species were reported in terrestrial subterranean habitats from all continents except Antarctica. Palaearctic and Nearctic biogeographic regions represented the main source of alien species. The main routes of introductions into the recipient country are linked to commercial activities (84.3% of cases for which there was information available). Negative impacts have been documented for a small number of case studies (22.7%), mostly related to increased competition with native species. For a limited number of case studies (6.1%), management strategies were reported but the effectiveness of these interventions has rarely been quantified. Accordingly, information on costs is very limited. Approximately half of the species in our database can be considered established in subterranean habitats. According to our results, the presence of suitable traits grants access to the stringent environmental filter posed by subterranean environments, facilitating establishment in the new habitat. We recommend that future studies deepen the understanding of invasiveness into subterranean habitats, raising public and scientific community awareness of preserving these fragile ecosystems.
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Affiliation(s)
- Giuseppe Nicolosi
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
| | - Stefano Mammola
- Molecular Ecology Group (Dark-MEG), Water Research Institute (IRSA), National Research Council (CNR), Corso Tonolli, 50, Pallanza, 28922, Italy.,Laboratory for Integrative Biodiversity Research (LIBRe), Finnish Museum of Natural History (LUOMUS), University of Helsinki, Pohjoinen Rautatiekatu 13, Helsinki, 00100, Finland
| | - Laura Verbrugge
- Water and Development Research Group, Department of Built Environment, Aalto University, Tietotie 1E, Espoo, 02150, Finland
| | - Marco Isaia
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
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3
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Lunghi E, Cianferoni F, Corti C, Zhao Y, Manenti R, Ficetola GF, Mancinelli G. The trophic niche of subterranean populations of Speleomantes italicus. Sci Rep 2022; 12:18257. [PMID: 36309527 PMCID: PMC9617932 DOI: 10.1038/s41598-022-21819-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 10/04/2022] [Indexed: 12/31/2022] Open
Abstract
The determination of a species trophic niche can clarify its functional role within a food web and how prey resources are used in relation with the spatial and temporal variability of environmental conditions. This information may result particularly useful for the implementation of conservation plans of endangered species having a cryptic behaviour or living in places difficult to be surveyed. Here we present the first long-term study on the trophic niche of the Italian cave salamander Speleomantes italicus, a strictly protected facultative cave species that seasonally exploits surface environments (e.g., forested areas) as well as both natural and artificial subterranean environments. We analysed the diet variation of six populations of S. italicus inhabiting natural caves, surveyed 24 times in a full year. During the surveys, all sampled individuals were subjected to stomach flushing and the ingested prey were identified and enumerated; furthermore, salamanders' body condition was also evaluated. The results of the analyses provided the first comprehensive, year-round assessment of the diet for a Speleomantes species. Remarkable divergences in terms of trophic niche and body condition were observed between the studied populations. We found a discrepancy in the foraging activity of the populations located in different areas; specifically, the individuals that experienced sub-optimal microclimatic conditions poorly performed in foraging. Furthermore, we found temporal and spatial variability in the body condition of individuals. Our study highlighted a remarkably high spatial and temporal divergence in the trophic habits of conspecific populations, a feature that may represent one of the major factors promoting the variability of multiple population traits.
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Affiliation(s)
- Enrico Lunghi
- grid.9227.e0000000119573309Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China ,grid.158820.60000 0004 1757 2611Dipartimento di Medicina clinica, sanità pubblica, scienze della vita e dell’ambiente (MESVA), University of L’Aquila, Coppito, L’Aquila Italy ,grid.8404.80000 0004 1757 2304Zoologia, “La Specola”, Museo di Storia Naurale, Università degli Studi di Firenze, Florence, Italy ,Natural Oasis, Prato, Italy ,Unione Speleologica Calenzano, Calenzano, Florence, Italy
| | - Fabio Cianferoni
- grid.8404.80000 0004 1757 2304Zoologia, “La Specola”, Museo di Storia Naurale, Università degli Studi di Firenze, Florence, Italy ,grid.5326.20000 0001 1940 4177Istituto di Ricerca Sugli Ecosistemi Terrestri (IRET), Consiglio Nazionale delle Ricerche (CNR), Sesto Fiorentino, Florence Italy
| | - Claudia Corti
- grid.8404.80000 0004 1757 2304Zoologia, “La Specola”, Museo di Storia Naurale, Università degli Studi di Firenze, Florence, Italy
| | - Yahui Zhao
- grid.9227.e0000000119573309Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Raoul Manenti
- grid.4708.b0000 0004 1757 2822Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy ,Laboratorio di Biologia Sotterranea “Enrico Pezzoli”, Parco Regionale del Monte Barro, Galbiate, Italy
| | - Gentile Francesco Ficetola
- grid.4708.b0000 0004 1757 2822Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy ,grid.450308.a0000 0004 0369 268XLaboratoire d’Écologie Alpine (LECA), Université Grenoble Alpes, CNRS, Grenoble, France
| | - Giorgio Mancinelli
- grid.9906.60000 0001 2289 7785Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali (DiSTeBA), Università del Salento, Lecce, Italy ,grid.5326.20000 0001 1940 4177Istituto per le Risorse Biologiche e le Biotecnologie Marine (IRBIM), Consiglio Nazionale delle Ricerche (CNR), Lesina, Foggia Italy ,grid.10911.380000 0005 0387 0033CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Roma, Italy
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The Trophic Niche of Two Sympatric Species of Salamanders (Plethodontidae and Salamandridae) from Italy. Animals (Basel) 2022; 12:ani12172221. [PMID: 36077941 PMCID: PMC9454711 DOI: 10.3390/ani12172221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/12/2022] [Accepted: 08/21/2022] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Studies on species’ trophic niches are essential to understand the characteristics of species’ ecology and life traits, as well as to improve conservation strategies. In the absence of competitors, species realize their trophic niche including in their diet the most profitable food resources. In the presence of competitors, species modify their preferences to reduce competition and maintain the highest benefits at the same time. In this study, we assessed the trophic niche of two species of salamanders coexisting in a forested area of Italy and evaluated which might be the mechanisms that these two species adopted to reduce competition. We found that the Italian cave salamander (Speleomantes italicus) mostly consumed flying prey with a hard cuticle, while the fire salamander (Salamandra salamandra) preferred worm-like and soft-bodied prey. In conclusion, we hypothesize that in our case, the two species of salamanders did not have to change their prey preference in order to avoid competition, but divergences in metabolism and behavioral traits likely worked as natural deterrent. Abstract The trophic niche of a species is one of the fundamental traits of species biology. The ideal trophic niche of a species is realized in the absence of interspecific competition, targeting the most profitable and easy-to-handle food resources. However, when a competitor is present, species adopt different strategies to reduce competition and promote coexistence. In this study, we assessed the potential mechanisms that allow the coexistence of two generalist salamanders: the Italian cave salamander (Speleomantes italicus) and the fire salamander (Salamandra salamandra). We surveyed, in April 2021, a forested area of Emilia-Romagna (Italy) during rainy nights. Analyzing the stomach contents of the captured individuals, we obtained information on the trophic niche of these two sympatric populations. Comparing our results with those of previous studies, we found that the two species did not modify their trophic niche, but that alternative mechanisms allowed their coexistence. Specifically, different prey preferences and predator metabolisms were likely the major factors allowing reduced competition between these two generalist predators.
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Piñon-Flores MA, Suazo-Ortuño I, Ramírez-Herrejón JP, Moncayo-Estrada R, del-Val E. Habitat, water quality or geomorphological degradation in the streams: Which is most important for conserving an endemic amphibian of Central Mexico? J Nat Conserv 2021. [DOI: 10.1016/j.jnc.2021.126063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ecological Observations on Hybrid Populations of European Plethodontid Salamanders, Genus Speleomantes. DIVERSITY 2021. [DOI: 10.3390/d13070285] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Speleomantes are the only plethodontid salamanders present in Europe. Multiple studies have been performed to investigate the trophic niche of the eight Speleomantes species, but none of these studies included hybrid populations. For the first time, we studied the trophic niche of five Speleomantes hybrid populations. Each population was surveyed twice in 2020, and stomach flushing was performed on each captured salamander; stomach flushing is a harmless technique that allows stomach contents to be inspected. We also assessed the potential divergence in size and body condition between natural and introduced hybrids, and their parental species. Previously collected data on Speleomantes were included to increase the robustness of these analyses. In only 33 out of 134 sampled hybrid Speleomantes we recognized 81 items belonging to 11 prey categories. The frequency of empty stomachs was higher in females and individuals from natural hybrid populations, whereas the largest number of prey was consumed by males. We compared the total length and body condition of 685 adult salamanders belonging to three types of hybrids and three parental (sub)species. Three group of salamanders (one hybrid and two parental species) showed significantly larger size, whereas no difference in body condition was observed. This study provided novel ecological information on Speleomantes hybrid populations. We also provided insights into the potential divergence between hybrids and parental species in terms of size and body condition. We discuss our findings, and formulate several hypotheses that should be tested in the future.
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Melander SL, Mueller RL. Comprehensive Analysis of Salamander Hybridization Suggests a Consistent Relationship between Genetic Distance and Reproductive Isolation across Tetrapods. COPEIA 2020. [DOI: 10.1643/ch-19-319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Scott Lucas Melander
- Department of Biology, Colorado State University, 251 W Pitkin Street, Fort Collins, Colorado 80523; (SLM) ; and (RLM) . Send reprint requests to SLM
| | - Rachel Lockridge Mueller
- Department of Biology, Colorado State University, 251 W Pitkin Street, Fort Collins, Colorado 80523; (SLM) ; and (RLM) . Send reprint requests to SLM
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8
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Lunghi E, Giachello S, Zhao Y, Corti C, Ficetola GF, Manenti R. Photographic database of the European cave salamanders, genus Hydromantes. Sci Data 2020; 7:171. [PMID: 32504009 PMCID: PMC7275050 DOI: 10.1038/s41597-020-0513-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 04/27/2020] [Indexed: 11/23/2022] Open
Abstract
European Hydromantes are a group of eight salamander species often occurring in subterranean habitats, which are a difficult environment to explore. All Hydromantes are strictly protected species and thus, low-impact methodologies to study these salamanders are strongly needed. Here we used a photographic technique to produce a large dataset of European Hydromantes, providing standardised pictures of 1,052 individuals belonging to the eight species, including hybrids as well. With our methodology we were able to reduce the handling time of individuals, and produce high quality pictures useful to investigate multiple life traits of these endangered species. Furthermore, the standardised photos provided here can be used for future comparisons of individuals from the surveyed populations.
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Affiliation(s)
- Enrico Lunghi
- Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Museo "La Specola", Firenze, Italy
| | - Simone Giachello
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy.
| | - Yahui Zhao
- Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
| | - Claudia Corti
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Museo "La Specola", Firenze, Italy
| | - Gentile Francesco Ficetola
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Univ. Grenoble Alpes, CNRS, Univ. Savoie Mont Blanc, LECA, Laboratoire d'Ecologie Alpine, F-38000, Grenoble, France
| | - Raoul Manenti
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
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Lunghi E, Cianferoni F, Ceccolini F, Veith M, Manenti R, Mancinelli G, Corti C, Ficetola GF. What shapes the trophic niche of European plethodontid salamanders? PLoS One 2018; 13:e0205672. [PMID: 30335776 PMCID: PMC6193653 DOI: 10.1371/journal.pone.0205672] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 09/29/2018] [Indexed: 11/19/2022] Open
Abstract
The trophic niche is a life trait that identifies the consumer's position in a local food web. Several factors, such as ontogeny, competitive ability and resource availability contribute in shaping species trophic niches. To date, information on the diet of European Hydromantes salamanders are only available for a limited number of species, no dietary studies have involved more than one species of the genus at a time, and there are limited evidences on how multiple factors interact in determining diet variation. In this study we examined the diet of multiple populations of six out of the eight European cave salamanders, providing the first data on the diet for five of them. In addition, we assessed whether these closely related generalist species show similar diet and, for each species, we tested whether season, age class or sex influence the number and the type of prey consumed. Stomach condition (empty/full) and the number of prey consumed were strongly related to seasonality and to the activity level of individuals. Empty stomachs were more frequent in autumn, in individuals far from cave entrance and in juveniles. Diet composition was significantly different among species. Hydromantes imperialis and H. supramontis were the most generalist species; H. flavus and H. sarrabusensis fed mostly on Hymenoptera and Coleoptera Staphylinidae, while H. genei and H. ambrosii mostly consumed Arachnida and Endopterygota larvae. Furthermore, we detected seasonal shifts of diet in the majority of the species examined. Conversely, within each species, we did not find diet differences between females, males and juveniles. Although being assumed to have very similar dietary habits, here Hydromantes species were shown to be characterized by a high divergence in diet composition and in the stomach condition of individuals.
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Affiliation(s)
- Enrico Lunghi
- Department of Biogeography, University of Trier, Trier, Germany
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Sezione di Zoologia "La Specola", Firenze, Italy
- Natural Oasis, Prato, Italy
- * E-mail:
| | - Fabio Cianferoni
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Sezione di Zoologia "La Specola", Firenze, Italy
- CNR-IBAF Consiglio Nazionale delle Ricerche, Istituto di Biologia Agroambientale e Forestale, Monterotondo, Roma, Italy
| | - Filippo Ceccolini
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Sezione di Zoologia "La Specola", Firenze, Italy
| | - Michael Veith
- Department of Biogeography, University of Trier, Trier, Germany
| | - Raoul Manenti
- Department of Environmental Sciences and Policy, University of Milano, Milano, Italy
| | - Giorgio Mancinelli
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, Lecce, Italy
| | - Claudia Corti
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Sezione di Zoologia "La Specola", Firenze, Italy
| | - Gentile Francesco Ficetola
- Department of Environmental Sciences and Policy, University of Milano, Milano, Italy
- Université Grenoble-Alpes, CNRS, Laboratoire d’Écologie Alpine (LECA), Grenoble, France
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10
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Lunghi E, Cianferoni F, Ceccolini F, Mulargia M, Cogoni R, Barzaghi B, Cornago L, Avitabile D, Veith M, Manenti R, Ficetola GF, Corti C. Field-recorded data on the diet of six species of European Hydromantes cave salamanders. Sci Data 2018; 5:180083. [PMID: 29762556 PMCID: PMC5952864 DOI: 10.1038/sdata.2018.83] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 02/28/2018] [Indexed: 11/20/2022] Open
Abstract
The availability of data on the feeding habits of species of conservation value may be of great importance to develop analyses for both scientific and management purposes. Stomach flushing is a harmless technique that allowed us to collect extensive data on the feeding habits of six Hydromantes species. Here, we present two datasets originating from a three-year study performed in multiple seasons (spring and autumn) on 19 different populations of cave salamanders. The first dataset contains data of the stomach content of 1,250 salamanders, where 6,010 items were recognized; the second one reports the size of the intact prey items found in the stomachs. These datasets integrate considerably data already available on the diet of the European plethodontid salamanders, being also of potential use for large scale meta-analyses on amphibian diet.
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Affiliation(s)
- Enrico Lunghi
- Universität Trier Fachbereich VI Raum-und Umweltwissenschaften, Biogeographie, Universitätsring 15, 54286 Trier, Germany.,Museo di Storia Naturale dell'Università degli Studi di Firenze, Sezione di Zoologia "La Specola", Via Romana 17, 50125 Firenze, Italia.,Natural Oasis, Via di Galceti 141, 59100 Prato, Italia
| | - Fabio Cianferoni
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Sezione di Zoologia "La Specola", Via Romana 17, 50125 Firenze, Italia.,CNR-IBAF Consiglio Nazionale delle Ricerche, Istituto di Biologia Agroambientale e Forestale, Via Salaria km 29,300, 00015 Monterotondo (Roma), Italia
| | - Filippo Ceccolini
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Sezione di Zoologia "La Specola", Via Romana 17, 50125 Firenze, Italia
| | | | - Roberto Cogoni
- Unione Speleologica Cagliaritana, Via A. Scarlatti, 11, 09045 Quartu Sant'Elena (CA), Italia
| | - Benedetta Barzaghi
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 20, 20133 Milano, Italia
| | - Lorenzo Cornago
- Università degli Studi di Bologna, via Selmi 3, 40126 Bologna, Italy
| | - Domenico Avitabile
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 20, 20133 Milano, Italia
| | - Michael Veith
- Universität Trier Fachbereich VI Raum-und Umweltwissenschaften, Biogeographie, Universitätsring 15, 54286 Trier, Germany
| | - Raoul Manenti
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 20, 20133 Milano, Italia
| | - Gentile Francesco Ficetola
- Department of Environmental Sciences and Policy, Università degli Studi di Milano, via Celoria 20, 20133 Milano, Italia.,Univ. Grenoble Alpes, CNRS, Laboratoire d'Écologie Alpine (LECA), F-38000 Grenoble, France
| | - Claudia Corti
- Museo di Storia Naturale dell'Università degli Studi di Firenze, Sezione di Zoologia "La Specola", Via Romana 17, 50125 Firenze, Italia
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