Results 11 to 20 of about 180 (119)

Pool choice in a vertical landscape: Tadpole-rearing site flexibility in phytotelm-breeding frogs. [PDF]

Ecol Evol, 2021
Certain Neotropical frogs use plant‐based pools of water as nurseries for their young. This study covers the biological and chemical factors influencing pool choice across the vertical gradient in three different species. Abstract Many species of Neotropical frogs have evolved to deposit their tadpoles in small water bodies inside plant structures ...
Fouilloux CA, Serrano Rojas SJ, Carvajal-Castro JD, Valkonen JK, Gaucher P, Fischer MT, Pašukonis A, Rojas B.   +7 more
europepmc   +2 more sources

Patterns of infection, origins, and transmission of ranaviruses among the ectothermic vertebrates of Asia. [PDF]

Ecol Evol, 2021
Ranaviral infections are becoming frequent, severe, and widespread, causing mortality in native biodiversity and cultured species in Asia. Ranaviruses have a broad host range and are transmitted through live animal trade. Ranaviral disease is predominantly a summer disease, which may spread unhindered with global warming. The controlling of the disease
Herath J, Ellepola G, Meegaskumbura M.
europepmc   +2 more sources

Analysis of morphological attributes as a driver of trade in poison dart frogs. [PDF]

Conserv Biol
Abstract The unsustainable use of wildlife is a threat to biodiversity on a global scale, and the insatiable demand is driven by the attributes of the species, their parts, and derivatives. However, not all species are equally valued; certain attributes command a higher price. One example is the exotic pet trade in amphibians and reptiles.
Jaichand P, Roberts DL, Fraser IM.
europepmc   +2 more sources

Structure and evolution of the sexually dimorphic integumentary swelling on the hands of dendrobatid poison frogs and their relatives (Amphibia: Anura: Dendrobatoidea). [PDF]

J Anat, 2022
The hands of adult males of many dendrobatid poison frogs and their relatives possess one or two of four types of specialized mucous glands that presumably secrete pheromones delivered to females during cephalic amplexus. The discovery of these glands adds a new dimension to studies of poison frog reproductive biology, which have investigated acoustic,
Cavalcanti IRS, Luna MC, Faivovich J, Grant T.   +3 more
europepmc   +2 more sources

Expression patterns of melanin-related genes are linked to crypsis and conspicuousness in a pumpkin toadlet. [PDF]

Mol Ecol
Abstract Colour signals play pivotal roles in different communication systems, and the evolution of these characters has been associated with behavioural ecology, integumentary production processes and perceptual mechanisms of the species involved. Here, we present the first insight into the molecular and histological basis of skin colour polymorphism ...
Monteiro JPC, Pröhl H, Lyra ML, Brunetti AE, de Nardin EC, Condez TH, Haddad CFB, Rodríguez A.   +7 more
europepmc   +2 more sources

Body size but not warning signal luminance influences predation risk in recently metamorphosed poison frogs. [PDF]

Ecol Evol, 2015
During early development many aposematic species have bright and conspicuous warning appearance, but have yet to acquire chemical defenses, a phenotypic state which presumably makes them vulnerable to predation. We deployed artificial prey of green‐and‐black poison frogs in the field, and show that rates of attack by bird predators were significantly ...
Flores EE, Stevens M, Moore AJ, Rowland HM, Blount JD.   +4 more
europepmc   +2 more sources

Investigating signal modalities of aposematism in a poison frog

Journal of Evolutionary Biology, Volume 36, Issue 7, Page 1003-1009, July 2023., 2023
In this manuscript, we asked if predators avoid poison frogs by their sense of smell alone. We found that experienced predators can indeed avoid poison by smell alone, indicating the importance of examining other modalities of potential communication in aposematic vertebrates.
Adam M. M. Stuckert, Kyle Summers
wiley   +1 more source

An investigation of toe‐tapping behaviour in anurans by analysis of online video resources

Journal of Zoology, Volume 312, Issue 3, Page 158-162, November 2020., 2020
A database of online videos featuring feeding toads and frogs, particularly Dendrobatidae, was constructed in order to investigate factors affecting toe tapping, a behaviour which has been noted to accompany feeding across various taxa. The collected data revealed 19 species which have previously not been reported to exhibit the behaviour and a ...
L. S. A. Claessens, N. O. Ganchev, M. M. Kukk, C. J. Schutte, J. J. Sloggett   +4 more
wiley   +1 more source

Evolutionary integration of the frog cranium

Evolution, Volume 74, Issue 6, Page 1200-1215, June 2020., 2020
Abstract Evolutionary integration (covariation) of traits has long fascinated biologists because of its potential to elucidate factors that have shaped morphological evolution. Studies of tetrapod crania have identified patterns of evolutionary integration that reflect functional or developmental interactions among traits, but no studies to date have ...
Carla Bardua, Anne‐Claire Fabre, Margot Bon, Kalpana Das, Edward L. Stanley, David C. Blackburn, Anjali Goswami   +6 more
wiley   +1 more source

Sexual selection and intra-femalecompetition in the green poison-dart frog, Dendrobates auratus [PDF]

Animal Behaviour, 1989
Observations on the mating and parental behaviour of the green poison-dart frog were used to test two hypotheses for the function of female-female competition in this species. The hypothesis that females compete to monopolize as many mates as possible was not supported because: (1) male territoriality was associated with competition for females; (2 ...
openaire   +2 more sources