Search results for "FROGS"
showing 5 items of 5 documents
Post-Messinian evolutionary relationships across the Sicilian channel: Mitochondrial and nuclear markers link a new green toad from Sicily to African…
2008
19 páginas, 6 figuras y 3 tables
Pool choice in a vertical landscape: Tadpole‐rearing site flexibility in phytotelm‐breeding frogs
2021
Abstract Many species of Neotropical frogs have evolved to deposit their tadpoles in small water bodies inside plant structures called phytotelmata. These pools are small enough to exclude large predators but have limited nutrients and high desiccation risk. Here, we explore phytotelm use by three common Neotropical species: Osteocephalus oophagus, an arboreal frog that periodically feeds eggs to its tadpoles; Dendrobates tinctorius, a tadpole‐transporting poison frog with cannibalistic tadpoles; and Allobates femoralis, a terrestrial tadpole‐transporting poison frog with omnivorous tadpoles. We found that D. tinctorius occupies pools across the chemical and vertical gradient, whereas A. fe…
Rhema ghennàion. Responsabilità ‘genetica’ del poeta tragico nelle Rane di Aristofane
2017
Questo contributo si propone di indagare il rapporto tra cultura e politica nelle Rane di Aristofane attraverso una delineazione delle nozioni di responsabilità e merito nella figura del poeta tragico au-spicata da Aristofane. Dall’appartenenza del poeta alle Muse, che si configura nella sua partecipa-zione ai loro Misteri, discende una sua responsabilità ‘genetica’: il poeta utile alla polis è infatti fer-tile (γόνιμος), ovvero, è in grado di fecondare il teatro, e quindi la città, di valori che, ispirandosi agli insegnamenti del passato, educhino i cittadini. Intorno al concetto di ‘nobiltà’ (γενναιότης), unito a quello di fecondità (sulla base della radice *γεν-), si sviluppa l’idea di u…
Raw data and code for the Fouilloux et al. (2023) paper: Visual environment of rearing sites affects larval response to perceived risk
2023
Data and code for the Fouilloux et al. (2023) study: Visual environment of rearing sites affects larval response to perceived risk. The study examined the effect of nursery turbidity on the (visual) perception of risk for tadpoles that develop in epehemeral pools of water (phytotelmata). Attached to the data is a Data Description PDF file, which includes the definition of the two data sheets (LAS_VISION_OCT2022 and FG_TURB_JAN2023) and the methods required to collect these data. The R code that goes along with these data is also provided. The full work is cited and contextualized in the Journal of Experimental Biology.
Diversity in warning coloration: selective paradox or the norm?
2019
Aposematic theory has historically predicted that predators should select for warning signals to converge on a single form, as a result of frequency-dependent learning. However, widespread variation in warning signals is observed across closely related species, populations and, most problematically for evolutionary biologists, among individuals in the same population. Recent research has yielded an increased awareness of this diversity, challenging the paradigm of signal monomorphy in aposematic animals. Here we provide a comprehensive synthesis of these disparate lines of investigation, identifying within them three broad classes of explanation for variation in aposematic warning signals: …