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More than 90 percent of flowering plant species combine male and female characteristics in one plant. In the less than 10 percent where female and male flowers exist on separate plants, they typically...
How sexual communication systems can evolve under stabilizing selection is still a paradox in evolutionary biology. In moths, females emit a species-specific sex pheromone, consisting of a blend of bi...
Background: Total-body iron stores (TBI), which are calculated from serum ferritin and soluble transferrin receptor concentrations, can be used to assess the iron status of populations in the United S...
Female mosquitofish are not only bigger than the males, they have bigger impacts on freshwater ecosystems. In a controlled study conducted in experimental ponds, researchers found dramatic differences...
Lemur girls behave more like the guys, thanks to a little testosterone, according to a new study.Males rule in most of the animal world. But when it comes to conventional gender roles, lemurs -- dista...
We studied the feeding behavior of the nauplii and adult females of the marine cyclopoid copepod Oithona davisae in the laboratory. Functional response experiments showed that O. davisae can feed on ...
Tiny, swift, and iridescent, hummingbirds dart around flowers and feeders, sipping nectar with their seemingly delicate beaks. But new research shows that these beaks actually double as deft, dagger-...
This is the first record of a green frog Rana (Pelophylax) kl. esculenta population from the E-system in the north-western part of Romania. From April to July 2005 we analysed the trophic spectrum of ...
Past work on fertilization in echinoids and other egg-broadcasting, free-spawning invertebrates suggests that these organisms might be extremely sperm limited in the field unless individuals spawn in ...
The morphology of the parts of the venom apparatus and the histology of venom glands of the idiobiont solitary pupal endoparasitoid Pimpla turionellae(L.) were examined under microscope. There are two...

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