For example fecundity is the potential to for a female to become pregnant and carry that pregnancy to a live birth in demography, while in clinical medicine it refers to actual production of live offspring.
What is the difference between fertility and fecundity?
Fertility is the number of children born to a woman, while fecundity is her physiological potential to bear children. Fertility is often used as measure of fitness, and fecundity is related to reproductive value.
Is fecundity a reproduction?
Recognizing that there are many operational definitions of human fecundity, from a population research perspective, fecundity is defined as the biologic capacity to reproduce irrespective of pregnancy intentions, while fertility is demonstrated fecundity as measured by live births and sometimes stillbirths.
What does high fecundity mean?
Fecundity is an organism’s reproductive capacity (the number of offspring it’s capable of producing). The higher the fecundity of an organism, the less energy it’s likely to invest in each offspring, both in terms of direct resources – such as fuel reserves placed in an egg or seed – and in terms of parental care.
What is the importance of fecundity?
Fecundity is an important component of both sexual and asexual reproduction, and it can be viewed as a direct (production of offspring) or an indirect (assisting in the reproduction of related individuals) process.
How do you determine fecundity?
The fecundity is then F = nV/v where n = number of eggs in the subsample, V = volume to which the total number of eggs is made up and v = volume of the subsample. In practice, it is normally necessary to count more than one subsample from each fish to get a reliable estimate of the fecundity.
How does fertility depend on fecundity?
Literally, “fecundity” means the ability to produce live offspring, and “fertility” means the actual production of live offspring. So fecundity refers to the potential production, and fertility to actual production, of live offspring. Fecundity cannot be measured, but it can be assessed clinically.
How does fecundity affect population growth?
Fecundity. As age structure suggests, some individuals within a population have a greater impact on population-level processes, such as growth. Fecundity describes the number of offspring an individual or a population is able to produce during a given period of time (Martin 1995) (Figure 4).
Which organism has the highest fecundity?
- Species: Mola mola.
- Habitat: temperate and tropical waters around the world, probably not doing a whole lot.
- These whopping fish look distinctly peculiar.
- If reputation is anything to go by, sunfish are slow-moving and lazy: the marine equivalent of sloths.
What animals have high fecundity?
Wild animals, from birds to rabbits to snakes, usually produce more than one offspring at a time. Animals that produce multiple offspring and breed often are described as having high fecundity. Fecundity increases the chances that at least one of an animal’s offspring will survive to become a parent themselves.
What animals have low fecundity?
Beetles that live in dung and carrion generally have low fecundities (Hinton 1981). Among the most extreme examples are scarabaeid beetles of the genus Phanaeus. Under natural conditions, these beetles are said to produce about six offspring in their lifetime (Halffter 1977).
What is fecundity in population?
Population fecundity (PF). i.e. the total number of eggs spawned by a population during the spawning season of a given year, is the fundamental criterion of the reproductive capacity of the population.
What is the root word of fecundity?
Etymology:”Fecundity” comes from the Latin “fecundus” meaning fruitful.
What are the factors affecting fecundity explain?
Fecundity and egg production are affected by several factors, including environmental variations, food availability, breeding season duration, and spawning frequencies (Vazzoler, 1996).
Is human fecundity declining?
Temporal trends in fecundity may also be determined by lifestyle attitudes related to behavioural and societal changes. The preponderance of data on sperm parameters and on time trends in fecundity seem to indicate that there has been no decline in sperm quality and couple fecundity so far.
What is the period of fecundity?
2.4 Fecundability The monthly probability of conception, fecundability, is at most 0.15–0.25 among newlyweds and declines with increasing age and duration of marriage. It is this low because fertilization can occur only during about two days around the time of ovulation in the middle of the menstrual cycle.
What is fecundity of fish?
Fecundity. Fecundity can be defined as “the number of ova that are likely to be laid by a fish during the spawning season”. The number of eggs produced by a fish differs in different species, and depends on the size and age of the fish. It may also differ in different races of the same species.
What animal multiplies the fastest?
Domestic hamsters. As far as animals with the quickest gestation periods, the honor is given to the domestic hamster. It is not uncommon for hamster offspring to be born within sixteen days from conception. In addition, a young hamster is capable of reproducing on its own after just 3-4 weeks.
What is the difference between fecundity and prolificacy?
Fertility is defined as a number of lambing per year, fecundity is the number of lambs produced per year, and prolificacy is defined as a litter size.
How do you use fecundity in a sentence?
1. Fecundity declines rapidly after the age of 40. 2. The fecundity of her imagination remained undiminished even at 80.
What is meant by fecundity Class 10?
Fecundity is the physiological ability or the potential for reproduction. It is closely related to fertility and is measured by the number of gametes, seed sets or asexual propagules produced by an individual or a population. In population demography, fecundity is the number of offspring produced per mating season.
What is fecundity table in ecology?
The fecundity table uses the survivorship column (lx) and age- specific birthrates (bx) from the life table data. In the fecundity table, initially bx increases with the age, whereas, proportion survivorship (lx) declines with each age group (table 2).
What factors affect fertility?
- Previous Pregnancy.
- Duration of subfertility.
- Timing and Frequency of Sexual Intercourse.
- Lifestyle Factors.
What are the factors behind the high birth rates high total fertility rates?
Marriage and the Age at Which Females Have a First Child When women marry earlier in life, they tend to have children at an earlier age, and more children over their lifetime. This increases total fertility rates.
What term refers to the average rate at which organisms produce offspring?
What term refers to the average rate at which organisms produce offspring? natality.