Results 31 to 40 of about 1,760 (187)

Xenopus fraseri: Mr. Fraser, where did your frog come from? [PDF]

open access: yes, 2019
A comprehensive, accurate, and revisable alpha taxonomy is crucial for biodiversity studies, but is challenging when data from reference specimens are difficult to collect or observe.
Blackburn, D.   +11 more
core   +1 more source

Amphibia, Anura, Pipidae, Pipa carvalhoi (Miranda-Ribeiro, 1937): distribution extension and geographic distribution map in the southeast of Brazil [PDF]

open access: yesCheck List, 2010
We report new records for the Carvalho’s Surinam Toad Pipa carvalhoi in state of Minas Gerais, southeast of Brazil, extending its occurrence in the southern portion of its known geographic range.
Emanuel da Silva   +3 more
doaj   +3 more sources

Primeiro estudo parasitológico em rã com garras Africano (Xenopus laevis, Anfibia) no Chile [PDF]

open access: yes, 2017
Introduced species can arrive into new territories with parasites; however, these species are expected to face lower parasite richness than in their original regions. Both introduced hosts and parasites can affect native fauna.
Castillo, Cristóbal   +5 more
core   +1 more source

Host-Defense Peptides with Therapeutic Potential from Skin Secretions of Frogs from the Family Pipidae

open access: yesPharmaceuticals, 2014
Skin secretions from frogs belonging to the genera Xenopus, Silurana, Hymenochirus, and Pseudhymenochirus in the family Pipidae are a rich source of host-defense peptides with varying degrees of antimicrobial activities and cytotoxicities to mammalian ...
J. Michael Conlon, Milena Mechkarska
doaj   +1 more source

Leptodactylus rugosus [PDF]

open access: yes, 2000
Number of Pages: 5Integrative BiologyGeological ...
Heyer, W. Ronald, Thompson, Amanda S.
core   +1 more source

Evaluation of the genotoxic and teratogenic potential of a municipal sludge and sludge-amended soil using the amphibian Xenopus laevis and the tobacco: Nicotiana tabacum L. var. xanthi Dulieu [PDF]

open access: yes, 2003
The toxic, genotoxic and teratogenicpotential of amunicipal sewage sludge was assessed using the micronucleus assay on the larvae of the amphibianXenopuslaevis and with the tobacco somatic mutation test using the yellow–green xanthiDulieu mutant a1+/a1 ...
Chenon, Pascale   +4 more
core   +4 more sources

Amphibians of Serra Bonita, southern Bahia: a new hotpoint within Brazil’s Atlantic Forest hotspot

open access: yesZooKeys, 2014
We studied the amphibian community of the Private Reserve of Natural Heritage (RPPN) Serra Bonita, an area of 20 km2 with steep altitudinal gradients (200–950 m a.s.l.) located in the municipalities of Camacan and Pau-Brasil, southern Bahia State, Brazil.
Iuri Dias   +3 more
doaj   +1 more source

Mind the gaps: investigating the cause of the current range disjunction in the Cape Platanna, Xenopus gilli (Anura: Pipidae) [PDF]

open access: yesPeerJ, 2013
Low-lying areas of the Cape at Africa’s south-westernmost tip have undergone dramatic marine-remodelling, with regular changes in sea-level following glacial cycles.
Deborah J. Fogell   +2 more
doaj   +2 more sources

Non-native Amphibian Pet Trade via Internet in Poland [PDF]

open access: yes, 2018
Overharvesting and trade in amphibian populations is one of the causes of their global decline. Online trade not only encourages the exploitation of an increasing number of rare and endangered amphibian species from all over the world but also ...
Kaczmarski, Mikołaj, Kolenda, Krzysztof
core   +2 more sources

The ultrastructure of the spermatozoa of Epipedobates flavopictus (Amphibia, Anura, Dendrobatidae), with comments on its evolutionary significance [PDF]

open access: yes, 2002
We describe, for the first time, the spermatozoon ultrastructure of a dendrobatid frog, Epipedobates flavopictus. Mature spermatozoa of E. flavopictus are filiform, with a moderately curved head and a proportionally short tail. The acrosomal vesicle is a
Aguiar Júnior, Odair   +4 more
core   +1 more source

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