labeo rohita diagram

December 12th, 2020

Frontals articulate antero-laterally with the supraorbitals and postero-laterally with the postfrontals. Embedded in this ligament is a small bone with a backwardly directed spinous process, which is called interclarium. Centrally each scale has an area called focus. Scales are cycloid type which are thin overlapping bony plates, partly covered by skin. Though digestive enzyme activity has been estimated in the gastrointestinal tract of Indian major carps [8-12], there is no literature on their activities in different size groups and segments of the digestive tract. Radhakrishnan (eds. The remaining five arches are called branchial or gill-arches, diminishing in size from before backwards. It is divisible into an anterior or trunk region and a posterior caudal region. Anterior boundary of each orbit is formed by ectoethmoid, posterior boundary is formed by the sphenotic, dorsal boundary is made by frontal and ventral boundary is formed by alisphenoid and orbitosphenoid. 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. Before publishing your Notes on this site, please read the following pages: 1. These curve downwards and backwards between the muscles and the peritoneum, thus, encircling the abdominal cavity. | Comparative genomics of rohu (A) Venn diagram showing orthologous gene clusters among four diploid cyprinids, Labeo rohita, Anabarilius grahami, Ctenopharyngodon idellus, and … It is formed of a palato-pterygoquadrate which forms the upper jaw and a Meckel’s cartilage that forms the lower jaw in the embryonic stage. Centrally each scale has an area called focus. Dermotrichia support the fold of the fin. Hyomandibular articulates with the auditory capsule and on the other side with the symplectic. In the caudal vertebrae the centrum is amphicoelous. 15.2) is an extremely complex structure, composed of many investing membrane or dermal bones and cartilage bones. The result indicated 1387 non-redundant (184 contigs and 1203 singletons) putative transcripts with an average length of 542 bp. The epihyal and ceratohyal are provided with three sabre-shaped branchiostegal rays. 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. 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. Assign the stamens to their respective plants. Basisphenoids are absent. In front of auditory region the cranium is excavated on each side by a large orbit. Drawing Page 01: Labelled diagram of External Feature of Labeo rohita. KCET 2010: The diagram of Labeo rohita is given below. Chromosomal studies and quantitative karyotypic analysis of Rohu, Labeo rohita. Taxonomy position: Phylum- Chordata. (e) Epitoic is a small bone wedged in between the supra- and exoccipitals and pterotic, and produced into a short epiotic process. “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. Research output: Contribution to journal › Article. Frontals articulate anteriorly with the median mesethmoid and laterally and mesially with the nasals and ectoethmoids. The ectoethmoids also take part in the formation of olfactory capsules. On either side of centrum is present the transverse process or parapophysis. On the anterior and posterior faces of neural arches are present pre- and postzygapophyses, by which adjacent vertebrae articulate. Five small orbital bones form the orbital ring. The first and second radials each bear two fin rays, and the third largest radial bears the remaining five fin-rays. Labeo rohita, commonly called the Rohu fish, is one of the typical fresh-water bony fish­es of India. Each has a deep nasal pit which lodges the nasal sac. Small spine-like ossifications are attached in a single or double row along the inner aspect of each of the first four arches. Beneath the basihyal is present a median urohyal. Basioccipital is a long, tubular bone. Indian. Exoskeleton of Rohu Fish (Labeo rohita) comprises scales and fin-rays. 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. Physics. Metapterygoid projecting upwards from the quadrate, but between quadrate and the palatine are two investing bones, the ectopterygoid on the ventral, and the entopterygoid on the dorsal edge of the original cartilaginous bar. In the embryonic stage the concavities are communicated by a narrow notochordal canal perforating the centrum. Order-Cypriniformes. On the nutrition of the Indian major carp fry. A typical trunk vertebra consists of a centrum with deeply concave anterior and posterior faces. These bones do not, however, enter into the gape, and do not form the actual upper jaw of the adult fish. They are found in freshwater habitats in the tropics and subtropics of Africa and Asia. Species Labeo rohita Roho labeo. The fifth arch is reduced to a single bone on each side. However, instead of remaining cartilaginous, it is ossified by three replacing bones. Talwar, P.K. It is a large omnivore and extensively used in aquaculture. Labeo calbasu Day, 1878. The vertebral column is differentiated into distinct bony vertebrae. The last vertebra also possesses the postero-ventral process. 24.1 and 24.2a-c). Catla catla is the fastest growing Indian major carp amongst fin fishes. If I recollect correctly, it was in grade eight that I learnt the biological name of rui maach is Labeo Rohita. Rate of growth in the first years of life of Labeo rohita and Catla catla in the different districts of Orissa. Camouflage of Chameleon is associated with, The endocrine gland of insects, which secretes the juvenile hormone, is. A total of 1671 ESTs of Labeo rohita were retrieved from dbEST database and analysed for functional annotation using various computational approaches. Chemistry. Class-Oesteichthyes. In the last 3 or 4 trunk vertebrae the parapophyses are fused. A control group of fish was fed with diets containing antibiotics to destroy the digestive tract microflora which may induce digestive functions. ), Proceedings of the workshop on carp seed production technology, pp. The fin rays are attached with the epiurals and hypiurals in two symmetrical halves. Pelvic girdle (Fig. Local name: Kalibaus, Baus, Kalia. India is by far the largest producer of rohu, followed by Bangladesh and Myanmar. Which of the following is not an attribute of a population ? Mass production of intergeneric hybrid catla (Catla catla x Labeo rohita) and its growth in ponds, small and large reservoirs of Madhya Pradesh. Learn Biology by Suraiya AkterAssistant Teacher - BSISC#####Enjoy and stay connected with us ! Soft rays are segmented, often branched and biserial. Dorsal fin is a fin located at the back of Labeo (C). Welcome to NotesOnZoology.com! The first four trunk vertebrae are greatly changed since these vertebrae connect the swim- bladder with the internal ear. Labeo rohita is commonly known as rui, rohit, rohu belongs to family Cyprinidae, Cypriniformes. 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. The radials articulate with the posterior border of the pelvic bone. Two short threads like structures, the barbels, are present. Tripus is the modification of transverse process of third vertebra, and it is the last element of Weberian apparatus. The anterior forked end is connected with the rib of the twelfth trunk vertebra by ligaments. Introduction of Rohu Fish Farming:-Rohu (Roho Labeo or Labeo rohita) is one of the freshwater fishes of the carp family which is very popular fish in India and other parts of the world especially south-east Asia. Chordata, Osteichthyes, Rohu Fish, Skeleton of Rohu Fish, Vertebrates, Zoology. All these segments are ossified by replacing bones. Palatoquadrate is homologous with the upper jaw of dogfish. The lacrymals are attached with the antero-lateral borders of mesethmoid on the antero-dorsal surface of the skull. Spines in the fins of Labeo are unsegmented, uniserial structures. Biology. (a) Anterior pro-otic which unites with its fellow of the opposite side in the floor of the brain case, just in front of the basioccipital; (b) Opisthotic in the posterior part of the capsule, external to the exoccipital; (c) Sphenotic above the pro-otic and forming part of the boundary of the orbit; (d) Pterotic above the exoccipital and opisthotic, forming a distinct lateral ridge and produced behind into a prominent pterotic process; and. In: P. Keshavanath & K.V. Pre- and postzygapophyses are also present as in trunk vertebrae. NCERT P Bahadur IIT-JEE Previous Year Narendra Awasthi MS Chauhan. This fish also called as ”Rui” or “Ruee” or Tapra. Anal fin has a series of eight fin rays supported by seven somactidia. To cite this page: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 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. The operculum is formed of four investing bones; opercular, preopercular, subopercular and interopercular. Sarower-E-Mahfuj M, Hossain MB, Rahman MM, Hoshan MI. It is a highly preferred carp and fetches high market price. The figure of Labeo rohita is given below. 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. (i) The first or mandibular arch forms the jaws. This Indo-Gangetic riverine sps. ADVERTISEMENTS: Catla Catla (Theila): It is a fresh water fish inhabiting all the rivers in India. The diagram of labeo rohita is given below. The right and left hypobranchials of each arch are connected by an unpaired median basibranchial. Identify the parts labelled A, B, C, D, E, F, G In fast swimming fishes, propulsion is due to. They have a pair of lateral eyes (B) and nostrils (A) on their snout. This study was performed to identify individual chromosomes on morphological basis and to characterize a standard karyotype using the fish, Rohu (Labeo rohita, … is the natural inhabitant of the re-verine system of Northern and Central India. The young ones are planktivorous. Each half of pectoral girdle (Fig. The centra of second and third vertebrae are completely fused to form a large centrum that carries a flattened triangular plate, the tripus. Moreover, there are several radial lines, starting from focus and extending up to the periphery, called radii. The outgrowths corresponding to the parapophyses are fused with the centrum and unite in the middle ventral line, forming a haemal arch. 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. Somactidia are parallel bony rods found embedded within the body muscles. Content Guidelines 2. Thus, there are four bones in the Weberian apparatus, viz., claustrum, scaphium, interclarium and tripus. The visceral arches are loosely attached with the skull. The subopercular lies below and internal to the opercular. The caudal fin (D) is the tail fin located at the end of the caudal peduncle and is used for propulsion. The pelvic bone has an anterior elongated part which is deeply forked at the tip, and a posterior rod-like cartilaginous part. The mesethmoid is a transversely placed bone, in front of the frontal bones. The neural arches arising from the centrum are fused dorsally to form long, backwardly directed neural spine. The adults are chiefly herbivorous in diet. 49-52. Rohu fish belongs to the family of “Cyprinidae” and genus of “Labeo”. In the adult notochordal canal becomes closed. The quadrate at the posterior end of the entopterygoid furnishes a condyle for the articulation of the lower jaw. It is supposed that this apparatus is a modification of processes of certain vertebrae, which carries pressure stimuli anteriorly to the perilymph. It has every high food value and commercial importance. This fish serves as a popular delicious dish. The first four trunk vertebrae have no parapophyses. The proximal segment of each somactidia is large and dagger-shaped, and called axonast (interspinous bone). Of Northern and Central India mesethmoid in front of the mandible also observed in Indian,... Tripus is the tail fm this particular fish is studied as the type specimen of bony in. I with their of nature of blood listed in Column I with their of nature of blood listed Column. The end of the first and second radials each bear two fin and... 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