By Michael Bernard New, Valenti, James H. Tidwell, Louis R. D'Abramo, Methil Narayanan Kutty
Protecting normal biology and each element of farming freshwater prawns, from present learn to improvement and advertisement perform, this has turn into greatly considered as a landmark book within the box. the well known crew of editors, New, Valenti, Tidwell, D’Abramo and Kutty, have collected state of the art contributions from the world's major specialists to supply farm team of workers, company managers, researchers and invertebrate, freshwater and crustacean biologists with a vital source.
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Extra resources for Freshwater Prawns: Biology and Farming
Malcolmsonii, indigenous to Pakistan, India and Bangladesh; M. ohione (Smith, 1874), indigenous to Atlantic USA: Virginia to Texas, and the Mississippi basin; M. rude (Heller, 1862), indigenous from East Africa to Bangladesh; and M. vollenhovenii (Herklots, 1857), indigenous to West Africa: Cape Verde Islands to South Angola. Macrobrachium americanum, M. carcinus and M. vollenhovenii are closely related and are most easily recognised by their region of origin: West America, East America and West Africa, respectively.
Further work on this subject is clearly necessary, since the identification of male and female pheromones could play a major role in improving the aquaculture and husbandry of this species. M. rosenbergii, like other decapods, has aflagellate and non-motile spermatozoa (Felgenhauer & Abele 1991), which are enclosed in packets called spermatophores formed by a secretion of the male accessory sex glands. These are rich in glycoprotein and acid mucopolysaccharides (Dougherty et al. 1986), which may keep the delicate Biology 27 Medulla externa Medulla interna Sinus gland Medulla terminalis Optic nerve spermatozoa viable until fertilisation (Subramoniam 1991).
The swimmerets of the sixth abdominal somite are stiff and hard and, with the telson, serve as a tail fan. The telson is a median appendage on the posterior margin of the sixth abdominal somite. It is elongate, triangular and has two pairs of dorsal spinules; its posterior margin is produced in the middle into a strong broad point, which reaches distinctly beyond the two pairs of spinules that are implanted on the posterior margin; in most other species of Macrobrachium this point is overreached by the spinules.
Freshwater Prawns: Biology and Farming by Michael Bernard New, Valenti, James H. Tidwell, Louis R. D'Abramo, Methil Narayanan Kutty