搜索结果: 1-10 共查到“理学 females”相关记录10条 . 查询时间(0.062 秒)
Striped maple trees often change mating types, with females more likely to die（图）
Striped maple trees change mating types females likely to die
2019/10/28
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...
Get A Little Closer:Moth Females Use Scent Proximity To Attract Mates（图）
Get A Little Closer Moth Females Scent Proximity Attract Mates
2018/1/10
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...
Iron status of toddlers, nonpregnant females, and pregnant females in the United States
ferritin soluble transferrin receptor total-body iron iron deficiency toddlers women of reproductive age hemoglobin
2018/11/22
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...
Mosquitofish populations with more females have greater ecological impact
Mosquitofish populations more females greater ecological
2015/11/12
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...
Feeding rates and prey : predator size ratios of the nauplii and adult females of the marine cyclopoid copepod Oithona davisae
predator size Feeding rates and prey
2014/11/28
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-...
Food Habit of Rana (Pelophylax) kl. esculenta Females in a New Recorded E-System Population from a Forested Habitat in North-Western Romania
Rana (Pelophylax) kl. esculenta feeding females E-system Romania
2010/3/25
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 ...
Sea urchin spawning in benthic boundary layers: Are eggs fertilized before advecting away from females?
Sea urchin spawning benthic boundary layers eggs fertilized before advecting females
2014/5/20
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 Venom Apparatus and Histology of Venom Gland of Pimpla turionellae(L.) (Hym; Ichneumonidae) Females
Parasitoid Pimpla turionellae Venom gland Morphology Histology
2010/4/1
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...