At the free edges of fins are also present unbranched horny actinotrichia. 15.2) is an extremely complex structure, composed of many investing membrane or dermal bones and cartilage bones. Lakra and Krishna (1994) reported G-banded karyotypes in Indian major carps. Five small orbital bones form the orbital ring. Labeo rohita (rohu) is the most preferred species for polyculture among the Indian major carps. (ii) The second or hyoid arch forms the suspensorium and hyoid cornu. The epihyal and ceratohyal are provided with three sabre-shaped branchiostegal rays. Comparative genomics of rohu (A) Venn diagram showing orthologous gene clusters among four diploid cyprinids, Labeo rohita, Anabarilius grahami, Ctenopharyngodon idellus, and Danio rerio. Research output: Contribution to journal › Article. Camouflage of Chameleon is associated with, The endocrine gland of insects, which secretes the juvenile hormone, is. The lacrymals are attached with the antero-lateral borders of mesethmoid on the antero-dorsal surface of the skull. Frontals articulate antero-laterally with the supraorbitals and postero-laterally with the postfrontals. Order-Cypriniformes. The remaining five arches are called branchial or gill-arches, diminishing in size from before backwards. Our mission is to provide an online platform to help students to discuss anything and everything about Zoology. Assign the stamens to their respective plants. A total of 1671 ESTs of Labeo rohita were retrieved from dbEST database and analysed for functional annotation using various computational approaches. Moreover, there are several radial lines, starting from focus and extending up to the periphery, called radii. Each has a deep nasal pit which lodges the nasal sac. It is a highly preferred carp and fetches high market price. Match the following columns and select the correct option. Chromosomal and karyotypic studies are required for genetic improvement of any organisms. The mesethmoid is a transversely placed bone, in front of the frontal bones. Caudal fin is supported by a number of flattened bony rods. Pre- and postzygapophyses are also present as in trunk vertebrae. Labeo calbasu Shaw and Shebbeare, 1937. In this article we will discuss about the skeleton of rohu fish (Labeo rohita) with the help of suitable diagrams. Family- Cyprinidae. 16-18; P 2. Each half is formed of large, flat bone, the pelvic bone (basipterygium), lying in the middle line in the ventral body wall. The body is spindle-shaped, laterally flattened, dark greenish-black in color. Talwar, P.K. (i) The first or mandibular arch forms the jaws. In: P. Keshavanath & K.V. This graceful Indo-Gangetic riverine species is the natural inhabitant of the riverine system of northern and central India, and the rivers of Pakistan, Bangladesh and Myanmar. The sabre-shaped branchiostegal rays are attached along the posterior border of the epi- and ceratohyal. The lower jaw is formed of dentaries, angulars and articulars, Articular is formed by the ossification of Meckel’s cartilage and articulates with the quadrate of the upper jaw. It has every high food value and commercial importance. According to Boyle's law, the product of pressure and volume is a constant. Labeo is a freshwater bony fish found in lakes, ponds, and rivers. Basisphenoids are absent. Palatoquadrate is homologous with the upper jaw of dogfish. GnIH and GnRH expressions in the central nervous system and pituitary of Indian major carp, Labeo rohita during ontogeny: An immunocytochemical study. Dorsal fin is supported by 15 or 16 lepidotrichia placed on 14 somactidia. The endoskeleton of Labeo is completely ossified and forms the framework of the body. Frontals articulate anteriorly with the median mesethmoid and laterally and mesially with the nasals and ectoethmoids. 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