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Fin formula: D. 17-18 (3/14-15); P 1. They are found in freshwater habitats in the tropics and subtropics of Africa and Asia. is the natural inhabitant of the re-verine system of Northern and Central India. Chordata, Osteichthyes, Rohu Fish, Skeleton of Rohu Fish, Vertebrates, Zoology. Rohu fish belongs to the family of “Cyprinidae” and genus of “Labeo”. Which of the following cell type is capable of giving rise to other cell types in sponges ? Accessed at https://animaldiversity.org. Each exoccipital is distinguished into a basal plate, a lateral paroccipital process and a dorsal process. It includes seven paired arches uniting in the mid-ventral line. Welcome to NotesOnZoology.com! On the anterior and posterior faces of neural arches are present pre- and postzygapophyses, by which adjacent vertebrae articulate. Labeo calbasu Shaw and Shebbeare, 1937. The first four trunk vertebrae are greatly changed since these vertebrae connect the swim- bladder with the internal ear. In this way a firm vertical plate of bone is formed, to the edge of which the caudal fin rays are attached fanwise in a symmetrical manner. In: P. Keshavanath & K.V. Radhakrishnan (eds. In this article we will discuss about the skeleton of rohu fish (Labeo rohita) with the help of suitable diagrams. Suspensorium is formed of two bones, the hyomandibular and symplectic. Assign the stamens to their respective plants. The caudal vertebrae are 16 – 17 in number. Privacy Policy3. 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. ), Proceedings of the workshop on carp seed production technology, pp. ADVERTISEMENTS: 4. metabolism and their targets in the farmed carp rohu, Labeo rohita, which is economically important species in aquaculture. Small spine-like ossifications are attached in a single or double row along the inner aspect of each of the first four arches. It has every high food value and commercial importance. In the caudal vertebrae the centrum is amphicoelous. The caudal fin (D) is the tail fin located at the end of the caudal peduncle and is used for propulsion. The skeleton of median fins (dorsal and anal) consists of a series of: (ii) The dermotrichia or dermal fin rays. Species Labeo rohita Roho labeo. Anal fin has a series of eight fin rays supported by seven somactidia. To the inner surface of the cleithrum are attached two flat scale-like bones with a slender rod-like postclavicle passing backwards and downwards among the muscles. Spines in the fins of Labeo are unsegmented, uniserial structures. 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 . Each half is formed of large, flat bone, the pelvic bone (basipterygium), lying in the middle line in the ventral body wall. If I recollect correctly, it was in grade eight that I learnt the biological name of rui maach is Labeo Rohita. The interopercular pits between the lower portions of the three preceding bones, and is attached by ligament to the angle of the mandible. It is divisible into an anterior or trunk region and a posterior caudal region. Match the following columns and select the correct option. 49-52. Identify the parts labelled A, B, C, D, E, F, G It is a highly preferred carp and fetches high market price. How unpredictable! In between scaphium and tripus is present a stout ligament. Fish., 3(2):299-310 . 7 Diseases Infection with Aphanomyces invadans is an OIE-reportable disease. Fin-rays are fin-supporting structures. To the ventro-lateral region of the vertebra are attached by ligament a pair of long, slender pleural ribs with dilated heads. Rate of growth in the first years of life of Labeo rohita and Catla catla in the different districts of Orissa. Soft rays are segmented, often branched and biserial. Fish - Fish - The digestive system: The digestive system, in a functional sense, starts at the mouth, with the teeth used to capture prey or collect plant foods. Mass production of intergeneric hybrid catla (Catla catla x Labeo rohita) and its growth in ponds, small and large reservoirs of Madhya Pradesh. In the last 3 or 4 trunk vertebrae the parapophyses are fused. Choose the correct pair from the following. Around focus there are concentric rows of ridges called circulii which are used to count the age of fishes. Labeo rohita is commonly known as rui, rohit, rohu belongs to family Cyprinidae, Cypriniformes. The last vertebra also possesses the postero-ventral process. Frontals articulate antero-laterally with the supraorbitals and postero-laterally with the postfrontals. In the first six caudals each haemal arch bears a pair of ribs. Around focus there are concentric rows of ridges called circulii which are used to count the age of fishes. The body is spindle-shaped, laterally flattened, dark greenish-black in color. (iii) A mesocoracoid situated above the coracoid and anterior to the scapula. 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. Sarower-E-Mahfuj M, Hossain MB, Rahman MM, Hoshan MI. The neural arches arising from the centrum are fused dorsally to form long, backwardly directed neural spine. Indian J. All these bones bear no teeth. The vertebral column is differentiated into distinct bony vertebrae. TOS4. Research output: Contribution to journal › Article. It contains the typical labeos in the subfamily Labeoninae, which may not be a valid group, however, and is often included in the Cyprininae as tribe Labeonini. According to Boyle's law, the product of pressure and volume is a constant. In fast swimming fishes, propulsion is due to. lase, amylase, maltase, invertase, protease and lipase in the digestive tracts of Labeo rohita fingerlings. Drawing Page 02: Labelled diagram of Air bladder-Up Labelled diagram of Gills with chamber Writing Page: Blank. The quadrate at the posterior end of the entopterygoid furnishes a condyle for the articulation of the lower jaw. The opercular is a large, flat bone with a condyle which articulates with the hyomandibular. The cranium and sense capsules are firmly united together. At the free edges of fins are also present unbranched horny actinotrichia. The radials articulate with the posterior border of the pelvic bone. In the rest the arch is produced downwards and backwards into a haemal spine. They serve as a sieve to prevent the escape of food through the gill-slits and to protect the gill filaments. Through this run the caudal artery and vein. 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. 2020. Both these bones bear many teeth. This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU. The toothed palatine lies in front, articulating with the olfactory capsule. Two short threads like structures, the barbels, are present. GnIH and GnRH expressions in the central nervous system and pituitary of Indian major carp, Labeo rohita during ontogeny: An immunocytochemical study. The anterior forked end is connected with the rib of the twelfth trunk vertebra by ligaments. Dorsal fin is supported by 15 or 16 lepidotrichia placed on 14 somactidia. Trunk vertebrae are 21 in number. Talwar, P.K. This Indo-Gangetic riverine sps. The nasals articulate with the postero­lateral sides of the mesethmoid and form the roof of the olfactory capsules. The cranium of Labeo rohita is divided into four regions: It forms the anterior part of the cranium and is formed of paired nasals, ectoethmoids, lacrymals and unpaired median mesethmoid, vomer and rostral. The low neural arches arise from the latero-dorsal surface of the centrum and fuse in the middle to form a long, slender neural spine directed upwards and backwards. Basihyal supports the tongue. Moreover, there are several radial lines, starting from focus and extending up to the periphery, called radii. It forms the posterior most part of the skull. (B) Synteny conservation between rohu and zebrafish using Symap. NCERT P Bahadur IIT-JEE Previous Year Narendra Awasthi MS Chauhan. The sabre-shaped branchiostegal rays are attached along the posterior border of the epi- and ceratohyal. Which of the following animals has a tetramorphic colony ? This fish serves as a popular delicious dish. (e) Epitoic is a small bone wedged in between the supra- and exoccipitals and pterotic, and produced into a short epiotic process. The fin rays are attached with the epiurals and hypiurals in two symmetrical halves. Comparative genomics of rohu (A) Venn diagram showing orthologous gene clusters among four diploid cyprinids, Labeo rohita, Anabarilius grahami, Ctenopharyngodon idellus, and Danio rerio. The roots that originate from the base of the stem are: The infectious stage of Plasmodium that enters the human body i s, identify the substances having glycosidic bond and peptide bond, respectively in their structure. The proximal segment of each somactidia is large and dagger-shaped, and called axonast (interspinous bone). Dorsal fin is a fin located at the back of Labeo (C). It lies in between scaphium and tripus. Labeo is a freshwater bony fish found in lakes, ponds, and rivers. Which of the following is respiratory organ of scorpion ? The epihyal and ceratohyal are provided with three sabre-shaped branchiostegal rays. Chemistry. Caudal fin is supported by a number of flattened bony rods. Hyoid cornu is composed of paired interhyal, epihyal, ceratohyal, hypohyal and a median unpaired basihyal. 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. Ridges called circulii which are thin overlapping bony plates, partly covered by skin can keep you on top your! The re-verine system of Northern and Central India neural spine first six caudals each haemal arch bears a of. Matter whether you eat sea fish or river fish, is there a factor! 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