Results 11 to 20 of about 2,292 (215)

Natural and experimental infection of the lizard Ameiva ameiva with Hemolivia stellata (Adeleina: Haemogregarinidae) of the toad Bufo marinus [PDF]

Parasite, 2007
Developmental stages of a haemogregarine in erythrocytes of the lizard Ameiva ameiva (Teiidae), from Pará State, north Brazil, were shown to be those of Hemolivia by the nature of the parasite’s sporogonic cycle in the tick Amblyomma rotondatum. The type
Lainson R., De Souza M.C., Franco C.M.
doaj   +2 more sources

ALIMENTACIÓN DE BUFO MARINUS (LINNAEUS, 1758) (BUFONIDAE: ANURA), EN UNA LOCALIDAD DE SUCRE, COLOMBIA [PDF]

Caldasia, 2011
Se realizaron recolectas nocturnas de Bufo marinus en una localidad del departamento de Sucre. Se recolectaron 197 ejemplares, de los cuales 128 fueron hembras y 69 machos.
Sampedro Alcides, et al
doaj   +3 more sources

Seroprotein Patterns in the Bufo marinus Complex [PDF]

, 1962
The systematic relationships of the large species of neotropical toads of the Bufo marinus complex have not been defined since the studies of Lutz (1925). On the basis of recent contributions (Lutz and Kloss, 1952; Cochran, 1955; and Vellard, 1959) the following fundamental taxonomic units can be recognized: 1) an Amazonian population extending north ...
Bertini, F., Cei, José Miguel Alfredo María   +1 more
openaire   +3 more sources

Detection of Leptospira in cane toads (Rhinella jimi) from urban and rural Paraíba, Brazil. [PDF]

Vet Rec
Abstract Background Leptospirosis is a significant zoonosis in tropical regions, where poor sanitation and favourable climate aid its spread. Synanthropic animals such as the cane toad (Rhinella jimi), which share environments with both people and wild and domestic animals, may harbour Leptospira and contribute to urban and rural transmission cycles ...
de Souza Rocha KN, de Lima Peixoto A, de Medeiros Pereira LS, Cardoso DF, Rodrigues Silva MLC, de Azevedo SS, de Oliveira JPF, Alves CJ, Fonseca MA, Dos Santos Higino SS.   +9 more
europepmc   +2 more sources

Rapid geographic divergence in competitive ability of cane toad larvae (Rhinella marina) during a biological invasion. [PDF]

Ecology
Abstract Low population densities at the expanding edge of a biological invasion are predicted to reduce intraspecific competition such that invading organisms evolve to prioritize adaptations for rapid rates of population growth and dispersal over those that facilitate success in competitive interactions.
Clarke GS, Shine R, Brown GP, Phillips BL.   +3 more
europepmc   +2 more sources

A neuro-behavioural model of neophobia. [PDF]

Biol Rev Camb Philos Soc
ABSTRACT Fear can be defined as the internal neurological state that releases a repertoire of behaviours an animal performs to reduce the effect of an aversive factor. Neophobia, the fear of novelty, is a fundamental behavioural trait observed across a wide range of species from arthropods to humans.
Dorfman A, Subach A, Scharf I.
europepmc   +2 more sources

Predation by Atractosteus tropicus on Bufo marinus and its possible affect on population in a lowland tropical wet rainforest [PDF]

, 2010
Fish predation can affect amphibian populations. Most examples report invasive fish species and their negative effect on specific amphibians. Here we provide an occurrence of natural fish predation by the tropical gar Atractosteus tropicus on the cane ...
Lewis, Todd R., Ryall, Colin, Grant, Paul B.C., LaDuke, Thomas C.   +3 more
core   +4 more sources

Divergent Selection on Dispersal Targets Chemosensory and Neuronal Genes in Tribolium castaneum. [PDF]

Mol Ecol
ABSTRACT Dispersal is key to the life history, ecology and evolution of many organisms and important in pest invasiveness. However, the genetic architecture underlying variation in dispersal behaviour remains poorly understood outside of a few model species.
Pointer MD, Nash WJ, Spurgin LG, McMullan M, Butler S, Richardson DS.   +5 more
europepmc   +2 more sources

Locomotor performance of cane toads differs between native-range and invasive populations [PDF]

Royal Society Open Science, 2017
Invasive species provide a robust opportunity to evaluate how animals deal with novel environmental challenges. Shifts in locomotor performance—and thus the ability to disperse—(and especially, the degree to which it is constrained by thermal and hydric ...
Georgia Kosmala, Keith Christian, Gregory Brown, Richard Shine   +3 more
doaj   +1 more source

A new function for lactate in the toad Bufo marinus [PDF]

Journal of Applied Physiology, 1994
In the amphibian Bufo marinus, progressive hypoxia below a critical PO2 elicits a transient 50% increase in O2 consumption that coincides with the onset of lactate formation. The present study was designed to test the hypothesis that lactate causes the observed rise in metabolic rate.
H O, Pörtner, L G, Branco, G M, Malvin, S C, Wood   +3 more
openaire   +2 more sources