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Coping with drought?Effects of extended drought conditions on soil invertebrate prey and diet selection by a fossorial amphisbaenian reptile

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Current Zoology 2023年第4期69卷 367-376页

作者： José Martín Jesús Ortega Roberto García-Roa Gonzalo Rodríguez-Ruiz ana pérez-cembranos Valentín pérez-Mellado Departamento de Ecología Evolutiva Museo Nacional de Ciencias NaturalesCSICMadridSpain Institute of Evolutionary Biology CSIC-Universitat Pompeu FabraBarcelonaSpain Ethology Lab Cavanilles Institute of Biodiversity and Evolutionary BiologyUniversity of ValenciaValenciaSpain Departamento de Biología Animal Universidad de SalamancaSalamancaSpain

Arid climates are characterized by a summer drought period to which animals seem ***,in some years,the drought can extend for unusually longer *** the effects of these current extreme weather events on biodiversity can help to understand the effects of climate change,as models predict an increase in drought ***,we examined the effects of“unusual”extended drought on soil invertebrate prey availability and on diet composition(based on fecal contents)and diet selection of a fossorial amphisbaenian,the checkerboard worm lizard Trogonophis *** data show interannual variations in summer drought *** abundance and diversity of soil invertebrates in spring were high,and similar to those found in a“normal”early autumn,after some rain had ended with the summer *** contrast,in years with“unusual”extended drought,abundance,and diversity of soil invertebrates in early autumn were very ***,there were seasonal changes in amphisbaenians’diet;in autumn with drought,prey diversity,and niche breadth decreased with respect to spring and autumns after some rain had *** did not eat prey at random in any season,but made some changes in prey selection that may result from drought-related restrictions in prey ***,in spite that amphisbaenians showed some feeding flexibility,their body condition was lower in autumn than in spring,and much lower in autumn with *** extended drought became the norm in the future,amphisbaenians might suffer important negative effects for their health state.

关键词： amphisbaenians drought feeding ecology soil invertebrates Trogonophis wiegmanni weather conditions

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DNA metabarcoding the diet of podarcis lizards endemic to the Balearic Islands

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Current Zoology 2023年第5期69卷 514-526页

作者： Iris Alemany ana pérez-cembranos Valentín pérez-Mellado JoséAurelio Castro Antònia picornell Cori Ramon JoséA Jurado-Rivera Deptartment of Biology Universitat de les Illes BalearsCtra.Valldemossa km 7’5Palma de Mallorca07122Balearic IslandsSpain and Department of Animal Biology Universidad de SalamancaCampus Miguel de Unamuno s/n37007SalamancaSpain

Dietary studies are essential to unravel the functioning of ecosystems and ultimately to understand *** task,which at first may seem simple,becomes especially complex in those cases of omnivorous species with highly variable *** this regard,the emergence of next-generation DNA sequencing methodologies represents a powerful tool to address the *** we implement a high-throughput metabarcoding strategy based on the analysis of four molecular markers aimed at sequencing both mitochondrial(animal prey)and chloroplast(diet plants)genome fragments from fecal samples of two lizard species endemic to the Balearic Archipelago(podarcis lilfordi and ***)obtained through non-invasive *** results allowed for the characterization of their diets with a high degree of taxonomic detail and have contributed a large number of new trophic *** reported diets are based mainly on the consumption of arthropods,mollusks and plants from a diversity of taxonomic orders,as well as carrion and marine *** analyses also reveal inter-and intra-specific differences both in terms of seasonality and geographical distribution of the sampled lizard *** molecular findings provide new insights into the trophic interactions of these threatened endemic lizards in their unique and isolated ecosystems.

关键词： Balearic archipelago COI metabarcoding podarcis lilfordi podarcis pityusensis psbA-trnH rbcL trophic ecology

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