The neural arches arising from the centrum are fused dorsally to form long, backwardly directed neural spine. Choose the correct pair from the following. Fin formula: D. 17-18 (3/14-15); P 1. Chromosomal and karyotypic studies are required for genetic improvement of any organisms. Centrally each scale has an area called focus. The neural spine of the first vertebra is formed of two small pieces called claustrum and scaphium. The nasals articulate with the postero­lateral sides of the mesethmoid and form the roof of the olfactory capsules. These are the gill-rakers. It has every high food value and commercial importance. The right and left hypobranchials of each arch are connected by an unpaired median basibranchial. In the occipital region are four bones. Exoskeleton of Rohu Fish (Labeo rohita) comprises scales and fin-rays. In which of the following techniques, the embryos are transferred to assist those females who cannot conceive ? The posterior end of the caudal region is enormously modified for the support of the tail fm. In the adult notochordal canal becomes closed. Mouth shape and tooth structure vary greatly in fishes, depending on the kind of food normally eaten. Suspensorium is formed of two bones, the hyomandibular and symplectic. Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. The diagram of Labeo rohita is given below. Hyoid cornu is composed of paired interhyal, epihyal, ceratohyal, hypohyal and a median unpaired basihyal. The first and second radials each bear two fin rays, and the third largest radial bears the remaining five fin-rays. Moreover, there are several radial lines, starting from focus and extending up to the periphery, called radii. Labeo rohita is commonly known as rui, rohit, rohu belongs to family Cyprinidae, Cypriniformes. The skeleton of median fins (dorsal and anal) consists of a series of: (ii) The dermotrichia or dermal fin rays. Assign the stamens to their respective plants. is the natural inhabitant of the re-verine system of Northern and Central India. Labeo rohita. The indigenous major carps are Catla catla, Labeo rohita and Cirrhinus mrigal, apart from these varieties C.reba and Labeo calbasu are also economically viable. First three branchial arches are composed of pharyngobranchial above, then epibranchial, then a large ceratobranchial, and a small hypobranchial below. Camouflage of Chameleon is associated with, The endocrine gland of insects, which secretes the juvenile hormone, is. According to Boyle's law, the product of pressure and volume is a constant. The caudal fin (D) is the tail fin located at the end of the caudal peduncle and is used for propulsion. Fish., 12A(1):1-24. The hindmost centra have their axes deflected upwards and the last centrum is rod-like structure, the urostyle. They are found in freshwater habitats in the tropics and subtropics of Africa and Asia. Each pelvic fin is supported by nine lepidotrichia or fin rays and three somactidia or radials. On the role of zooplankton in the nutrition of carps fry. All these bones form an inverted cup-like structure that lodges the internal ear. Choose the correct answer. The subopercular lies below and internal to the opercular. & Jhingran, A.G. 1991. 15.7) is placed anterior to anal fin, at the level of cloaca. It is supposed that this apparatus is a modification of processes of certain vertebrae, which carries pressure stimuli anteriorly to the perilymph. The vertebral column is differentiated into distinct bony vertebrae. Small spine-like ossifications are attached in a single or double row along the inner aspect of each of the first four arches. Fin-rays are fin-supporting structures. It is highly liked for its taste and flavor. In the embryonic stage the concavities are communicated by a narrow notochordal canal perforating the centrum. The opercular is a large, flat bone with a condyle which articulates with the hyomandibular. “Rohu (Labeo rohita) is the most important among the three Indian major carp species used in carp polyculture systems.” According to Casal (2006), 795,128 metric tons of Labeo rohita were produced in aquaculture in 2000. Mitra GN, Das I, 1965. 9 (1/8); A. Disclaimer Copyright, Zoology Notes | Exclusive Notes on Zoology for Students, Urinogenital System of Rohu Fish (Labeo rohita): With Diagram | Zoology, External Morphology of Rohu Fish (With Diagram) | Chordata | Zoology, Blood Vascular System of Rohu Fish (With Diagram) | Chordata | Zoology, Respiratory System of Rohu Fish (With Diagram) | Chordata | Zoology, Dogfish: Origin and Habitat | Chordata | Zoology. The visceral arches are loosely attached with the skull. The caudal vertebrae are 16 – 17 in number. | Comparative genomics of rohu (A) Venn diagram showing orthologous gene clusters among four diploid cyprinids, Labeo rohita, Anabarilius grahami, Ctenopharyngodon idellus, and … A vertical plate or inter-orbital septum separates the two cavities from one another. Species Labeo rohita Roho labeo. In fast swimming fishes, propulsion is due to. Indian major carp, Labeo rohita (Hamilton-Buchanan, 1822), commonly known as ‘rohu’ belongs to the family Cyprinidae is available in lakes, ponds, rivers and other water bodies of India and adjacent countries . Five small orbital bones form the orbital ring. The centra of second and third vertebrae are completely fused to form a large centrum that carries a flattened triangular plate, the tripus. The skull is divided into cranium enclosing the brain with paired olfactory, optic and auditory capsules for the respective sense organs and the visceral or branchial arches. Identify the parts labelled A, B, C, D, E, F, G (b) Parietal region is formed of parietals on the dorsal side, alisphenoids form its lateral sides, and parasphenoid on the postero-ventral side. It is divided into an axial skeleton which includes the skull, vertebral column and ribs, and appendicular skeleton that includes the girdles and supporting elements of fins. Dentary meets with its fellow of the other side in the middle. They are more numerous than the centra, and three or four haemal arches are attached to the urostyle. To the ventro-lateral region of the vertebra are attached by ligament a pair of long, slender pleural ribs with dilated heads. The radials articulate with the posterior border of the pelvic bone. The Animal Diversity Web (online). Physics. Embedded in this ligament is a small bone with a backwardly directed spinous process, which is called interclarium. 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. Hyomandibular articulates with the auditory capsule and on the other side with the symplectic. It does not matter whether you eat sea fish or river fish, the benefits of eating this type of seafood are immense. 15.2) is an extremely complex structure, composed of many investing membrane or dermal bones and cartilage bones. Indian J. It is palatable and is liked by the Indian population (Figs. Identify the parts labelled as A,B,C,D and E - 13683255 Itis col worms cloffa actinopterygii ray finned fishes cypriniformes carps cyprinidae minnows or carps labeoninae etymology. The basibranchials are connected with one another and with the basihyal by cartilage so as to form a median ventral bar in the floor of the pharynx. Labeo Rohita In Mustard Sauce, And Stir-Fried Greens On The Side Of all the things I anticipated eating by being a Bengali is fish. TOS4. A more sensitive apparatus exists in the carps {e.g., Labeo) and siluroids (order Ostariophysi), in which a chain of bones connects the swim-bladder with the internal ear on either side, forming the Weberian apparatus. Research output: Contribution to journal › Article. The first four trunk vertebrae are greatly changed since these vertebrae connect the swim- bladder with the internal ear. 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. To cite this page: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. It is thick in mid region. GnIH and GnRH expressions in the central nervous system and pituitary of Indian major carp, Labeo rohita during ontogeny: An immunocytochemical study. Frontals articulate anteriorly with the median mesethmoid and laterally and mesially with the nasals and ectoethmoids. Chromosomal and karyotypic studies are required for genetic improvement of any organisms. Family- Cyprinidae. The operculum is formed of four investing bones; opercular, preopercular, subopercular and interopercular. (e) Epitoic is a small bone wedged in between the supra- and exoccipitals and pterotic, and produced into a short epiotic process. At the free edges of fins are also present unbranched horny actinotrichia. The neural and haemal spines of the last five vertebrae are very broad and closely connected with one another. Class-Oesteichthyes. Rate of growth in the first years of life of Labeo rohita and Catla catla in the different districts of Orissa. The fifth arch is reduced to a single bone on each side. Its distal end is connected by means of a supraclavicle to a forked bone, the post temporal, one branch of which articulates with the epiotic and the other with the pterotic process. Labeo rohita (Rohu) is the most important among the three Indian major carp species used in polyculture systems. The following diagrams A, B, C, D and E show the different types of arrangement of stamens based on the cohesion of their parts in different plants. This study was performed to identify individual chromosomes on morphological basis and to characterize a standard karyotype using the fish, Rohu (Labeo rohita, … Tripus is the modification of transverse process of third vertebra, and it is the last element of Weberian apparatus. Mass production of intergeneric hybrid catla (Catla catla x Labeo rohita) and its growth in ponds, small and large reservoirs of Madhya Pradesh. Lakra and Krishna (1994) reported G-banded karyotypes in Indian major carps. 22 Citations (Scopus) Abstract. The outgrowths corresponding to the parapophyses are fused with the centrum and unite in the middle ventral line, forming a haemal arch. Before publishing your Notes on this site, please read the following pages: 1. A control group of fish was fed with diets containing antibiotics to destroy the digestive tract microflora which may induce digestive functions. The body is spindle-shaped, laterally flattened, dark greenish-black in color. Comparative genomics of rohu (A) Venn diagram showing orthologous gene clusters among four diploid cyprinids, Labeo rohita, Anabarilius grahami, Ctenopharyngodon idellus, and Danio rerio. Which of the following is respiratory organ of scorpion ? The sabre-shaped branchiostegal rays are attached along the posterior border of the epi- and ceratohyal. It forms the posterior most part of the skull. In Rohu fish (Labeo rohita), the dermotrichia or lepidotrichia which lie in the substance of the fin are slender bones, jointed together and mostly branched. External to them are two large investing bones, the premaxilla and the maxilla, which together form the actual or secondary upper jaw. (ii) The second or hyoid arch forms the suspensorium and hyoid cornu. Fish., 3(2):299-310 . Palatoquadrate is homologous with the upper jaw of dogfish. Rohu fish belongs to the family of “Cyprinidae” and genus of “Labeo”. Sharma and Sharma (1998) also reported G-bands in … ADVERTISEMENTS: 4. Chromosomal studies and quantitative karyotypic analysis of Rohu, Labeo rohita. It is a large omnivore and extensively used in aquaculture. There are 12 species of Labeo and among those, only Labeo boggut are not available in Bangladesh (Shaw and Shebbeare ,1937). Hence. Dorsal fin is supported by 15 or 16 lepidotrichia placed on 14 somactidia. (iii) A mesocoracoid situated above the coracoid and anterior to the scapula. The ectoethmoids also take part in the formation of olfactory capsules. In front of auditory region the cranium is excavated on each side by a large orbit. The fin rays are attached with the epiurals and hypiurals in two symmetrical halves. Each half is formed of large, flat bone, the pelvic bone (basipterygium), lying in the middle line in the ventral body wall. Orbitosphenoids and a median parasphenoid form the floor of this region. 7 Diseases Infection with Aphanomyces invadans is an OIE-reportable disease. Privacy Policy3. KCET 2010: The diagram of Labeo rohita is given below. G-bands were also observed in Indian fishes, such as Channa punctatus, Colisa fascieatus, Mystus tengara, Puntius sophore and Labeo rohita. Through this run the caudal artery and vein. Accessed at https://animaldiversity.org. 24.1 and 24.2a-c). All these bones bear no teeth. Our mission is to provide an online platform to help students to discuss anything and everything about Zoology. The quadrate at the posterior end of the entopterygoid furnishes a condyle for the articulation of the lower jaw. The rostral fits into a notch in the mesethmoid. Proc.Congr., 29(3):159. Scales are cycloid type which are thin overlapping bony plates, partly covered by skin. The mesial segment is short and distal segment is reduced. The epihyal and ceratohyal are provided with three sabre-shaped branchiostegal rays. Match the animals listed in Column I with their of nature of blood listed in Column II. Labeo Rohita (Rohu): It is found in clear and sluggish rivers and streams. The process of growth is maximum during : Plasma is red and nucleated, colourless RBC, Adult with radial symmetry and larva with bilateral symmetry. The cranium and sense capsules are firmly united together. The result indicated 1387 non-redundant (184 contigs and 1203 singletons) putative transcripts with an average length of 542 bp. Trunk vertebrae are 21 in number. ), Proceedings of the workshop on carp seed production technology, pp. The interopercular pits between the lower portions of the three preceding bones, and is attached by ligament to the angle of the mandible. lase, amylase, maltase, invertase, protease and lipase in the digestive tracts of Labeo rohita fingerlings. The young ones are planktivorous. However, instead of remaining cartilaginous, it is ossified by three replacing bones. 15.6) is formed of: (i) A scapula, situated dorsally to the glenoid facets and developed partly as a replacing, partly as an investing bone; (ii) A coracoid situated ventrally to the glenoid facet and. This Indo-Gangetic riverine sps. Each half of pectoral girdle (Fig. Which of the following cell type is capable of giving rise to other cell types in sponges ? Amazing Health Benefits of Rohu Fish” Having fish thrice a week can keep you on top of your health. Dermotrichia support the fold of the fin. 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