Results 11 to 20 of about 6,433 (218)
Rapid geographic divergence in competitive ability of cane toad larvae (Rhinella marina) during a biological invasion. [PDF]
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 +3 more
europepmc +2 more sources
Divergent Selection on Dispersal Targets Chemosensory and Neuronal Genes in Tribolium castaneum. [PDF]
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 +5 more
europepmc +2 more sources
The bile salts present in gallbladder bile of the toad, Bufo marinus, were found to consist of a mixture of bile alcohol sulfates and unconjugated bile acids.
M Yoshii +7 more
doaj +1 more source
Ants biting amphibians: A review and new observations [PDF]
Antagonistic interactions between insects and amphibians are the subject of many scientific articles, mostly concerning amphibian predation on insect, but many fewer examples exist of the opposite situation.
Kaczmarski, Mikołaj +2 more
core +2 more sources
Faz-se uma revisão das espécies de Haemogregarina, encontradas, até a presente data, em Bufo marinus L. da região Norte, Leste e Sul da Venezuela,descrevendo-se o ciclo agâmico da Haemogregarina darlingi Leger, 1918, o ciclo esquizogônico da ...
José Vicente Scorza +2 more
doaj +1 more source
Locomotor performance of cane toads differs between native-range and invasive populations [PDF]
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 +3 more
doaj +1 more source
Arboreal frogs, tank bromeliads and disturbed seasonal tropical forest [PDF]
We investigated the relationship between arboreal frogs, tank bromeliads and landscape transformation in tropical forests of southeastern Campeche, Mexico. We surveyed frogs in six distinct habitats: slash and burn agriculture, seasonally flooded forest (
Augustine, Justine +3 more
core +2 more sources
Signal transmission through the dark-adapted retina of the toad (Bufo marinus). Gain, convergence, and signal/noise. [PDF]
Responses to light were recorded from rods, horizontal cells, and ganglion cells in dark-adapted toad eyecups. Sensitivity was defined as response amplitude per isomerization per rod for dim flashes covering the excitatory receptive field centers.
Copenhagen, David, Hemilä, S, Reuter, T
core +2 more sources
Biological control in French Guiana, Guadeloupe and Martinique [PDF]
Several biological control agents have been introduced successfully in Guyana, and / or Guadeloupe and Martinique: three tachinid dipterans and one hymenopteran for control of sugarcane borers, a ladybird and a hymenopteran parasitoid against the pink ...
Ryckewaert, Philippe +1 more
core +1 more source
Se presenta una relación sobre las exportaciones de dos especies de anfibios (Rana catesbeiana y Bufo marinus), emitidas por el Departamento de Vida Silvestre para una período que abarca desde 1994 hasta 1999.
Delsi de los Santos, Ivelisse Figueroa
doaj +1 more source

