Fertility female

Generation Wild female population Wdd females mated to sterile males, % Theoretical population of fertile females... 

Steven Rose I should say that most rape is not conducted against the category of fertile females. 

Subcutaneous injection males given 0.0001, 0.001 or 1.0 mg Ni/kg BW daily as nickel chloride for 15 days were mated with fertile females... 

Male fertile female subfertile Normal uterus... 

Reproductive toxicity has been noted in animal studies. Male mice administered 8400 mg/kg for 7 days before mating had decreased fertility. Female mice given the same dose 7 days before mating and throughout 21 days of gestation showed embryotoxicity and fetotoxi-city. Female rats had disrupted estrous cycles when maintained on diets containing 2.5% and 5% oxalic acid. ... 

Supporting evidence was given (7,17) for restricting the count to scales sufficiently separated from neighboring scales to respond as independent individuals to the applied oil film. However, oil entered and was retained by scales too near each other for them to be used for mortality counts. If the number and density of these scales were variable, some influence may have been exerted on the relation of the oil film to the individuals coimted. To enhance e independence of each scale coimted, fertile female scales were hand-thinned to approximately 0.5 cm. apart. The adult male insect emerges from the shell covering at an age of about 21 days only the cast shells of the males remain on the fruit at 36 days. These are loose and may be removed easily with an air stream. Any unfertile females are removed at the same time. 

Sex attractants. As in most animals, mating in mammals is typically highly competitive and its duration short-lived. Males of many (most) species of mammals have evolved acute abilities to detect and identify ovulating or recently ovulated (fertile) females using special types of signaling pheromones. A good example of such a female cue is found in the Asian elephants (below). Additionally, in a few instances, female mammals have evolved the ability to discern males so that they perform appropriate submissive or receptive behaviors. One of these cues has been identified in the pig (below). 

The presence of spermatozoid-releasing and spermatozoid-attracting substances released from the eggs of marine brown algae was first suggested for the Fucus species in the first half of the twentieth century.14 In 1971, Muller et al 5 reported the isolation of ectocarpene (1) from fertile female gametophytes of the cosmopolitan... 

In the autumn, winged sexual forms develop. These return to the apple tree if they have not remained there all the time. The fertilized females then lay their winter eggs. 

A small experiment in a semi-isolated guava thicket near Kilauea volcano on Hawaii failed to give significant control because of immigrating fertile females. 

Any level of exposure may be teratogenic, so potentially fertile females must not be pregnant or get... 

In mollusks, sexes are separate. Bivalves release their eggs and sperm into the water, and fertilization occurs there. In other types of mollusks, internal fertilization, a process in which sperm are transferred to the body of the female, is the norm. Following internal fertilization, females deposit strings or cases of eggs on the sand, seaweed, or rocks. In both internal and external fertilization, zygotes develop into swimming larvae that metamorphose into adult forms. 

After administration of 2 g/kg daily as part of the diet for 6 weeks, no pregnancies occurred in fertile female mice when the females were mated with male mice (not administered andrographis) known to be fertile (Zoha et al. 1989). 

In this case we are concerned with an employer s gender-based fetal protection policy. May an employer exclude a fertile female employee from certain jobs because of its concern for the health of the fetus the woman might conceive ... 

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