What is gonad maturation?
Maturation of the fish gonad is a process where tiny incipient sex cells develop, together with accessory tissue, into large organs with mature sperm or eggs that can be spawned. Maturation may occur once in a fish’s life or many times a year, depending on species and conditions.
What are gonads gametes?
Gonads are the sites (or organs) where gametes are produced. Gonads are the organs, whereas gametes are the haploid sex cells. • Gonads are responsible for the production of gametes and hormones, whereas gametes are responsible for the production of zygote.
Which is male gonads Gamate?
The male gonad, the testicle, produces sperm in the form of spermatozoa. The female gonad, the ovary, produces egg cells. Both of these gametes are haploid cells.
What are gonads testes?
The gonads, the primary reproductive organs, are the testes in the male and the ovaries in the female. These organs are responsible for producing the sperm and ova, but they also secrete hormones and are considered to be endocrine glands.
What are the different stages of gonads?
Six stages of gonad maturation were established for the females and males namely, immature (I), maturing (II), mature (III), ripe and running (IV), spent (V) and resting (VI).
What is fish fecundity?
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 are gonads 12?
Hint: Gonads are the male and female reproductive organs i.e. testes and ovaries. These reproductive system organs are necessary for the sexual reproduction in human beings. They produce male and female gametes.
What are the hormones produced by gonads?
The gonads (the testes in males and ovaries in females) are responsible for the production of steroid hormones, such as testosterone, estrogen, and progesterone.
Which hormones are released by gonads?
Gonadal hormones – nearly always synonymous with gonadal steroids – are hormones produced by the gonads, and include both steroid and peptide hormones. The major steroid hormones include estradiol and progesterone from the ovaries, and testosterone from the testes.
Which hormones are produced by gonads?
What are starfish gonads?
gonad, in zoology, primary reproductive gland that produces reproductive cells (gametes). In males the gonads are called testes; the gonads in females are called ovaries. In echinoderms (e.g., starfish), the gonads are usually suspended from the radiating arms directly into the sea.
How many gonads do humans have?
In this form, two main types of gonad exist – ovaries and testis. Males use testis to produce sperm.