Match the animals listed in Column I with their of nature of blood listed in Column II. Hyomandibular articulates with the auditory capsule and on the other side with the symplectic. Genus-Labeo. This particular fish is studied as the type specimen of bony fishes in many Indian Universities. (b) Parietal region is formed of parietals on the dorsal side, alisphenoids form its lateral sides, and parasphenoid on the postero-ventral side. The mesial segment is short and distal segment is reduced. Labeo calbasu Day, 1878. Indian J. They serve as a sieve to prevent the escape of food through the gill-slits and to protect the gill filaments. ADVERTISEMENTS: Catla Catla (Theila): It is a fresh water fish inhabiting all the rivers in India. Five small orbital bones form the orbital ring. Choose the correct answer. Externally to these is a very large investing bone, the cleithrum, extending downwards under the throat. Species Labeo rohita Roho labeo. Privacy Policy3. The Animal Diversity Web (online). To cite this page: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 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. Lakra and Krishna (1994) reported G-banded karyotypes in Indian major carps. It forms the posterior most part of the skull. Chromosomal and karyotypic studies are required for genetic improvement of any organisms. Match the following columns and select the correct option. The radials articulate with the scapula. 24.1 and 24.2a-c). Class-Oesteichthyes. A total of 1671 ESTs of Labeo rohita were retrieved from dbEST database and analysed for functional annotation using various computational approaches. TOS4. Labeo calbasu Shaw and Shebbeare, 1937. Scales are cycloid type which are thin overlapping bony plates, partly covered by skin. How unpredictable! A control group of fish was fed with diets containing antibiotics to destroy the digestive tract microflora which may induce digestive functions. Basihyal supports the tongue. 2020. Which of the following monkey has prehensile tail? The nasals articulate with the posterolateral sides of the mesethmoid and form the roof of the olfactory capsules. Fin-rays are fin-supporting structures. 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. Hyoid cornu is composed of paired interhyal, epihyal, ceratohyal, hypohyal and a median unpaired basihyal. Frontals articulate anteriorly with the median mesethmoid and laterally and mesially with the nasals and ectoethmoids. It has every high food value and commercial importance. Which of the following animals has a tetramorphic colony ? Therefore, a curve was fitted to the scatter diagram using the formula deve- loped, which represents the calculated values of ovary weights at different lengths of L. rohita. (e) Epitoic is a small bone wedged in between the supra- and exoccipitals and pterotic, and produced into a short epiotic process. The rostral fits into a notch in the mesethmoid. (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. Otic or auditory region is found behind the orbital region. 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. The quadrate at the posterior end of the entopterygoid furnishes a condyle for the articulation of the lower jaw. External to them are two large investing bones, the premaxilla and the maxilla, which together form the actual or secondary upper jaw. The fifth arch is reduced to a single bone on each side. 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. The caudal vertebrae are 16 – 17 in number. Small spine-like ossifications are attached in a single or double row along the inner aspect of each of the first four arches. Labeo Rohita (Rohu): It is found in clear and sluggish rivers and streams. 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 caudal fin (D) is the tail fin located at the end of the caudal peduncle and is used for propulsion. & Jhingran, A.G. 1991. At the free edges of fins are also present unbranched horny actinotrichia. 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. Around focus there are concentric rows of ridges called circulii which are used to count the age of fishes. These curve downwards and backwards between the muscles and the peritoneum, thus, encircling the abdominal cavity. 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. Rohita Valenciennes, 1842; Rohitichthys Bleeker, 1860; Tambra Bleeker, 1860; Labeo is a genus of carps in the family Cyprinidae. The neural arches arising from the centrum are fused dorsally to form long, backwardly directed neural spine. Beneath the basihyal is present a median urohyal. In front of auditory region the cranium is excavated on each side by a large orbit. The posterior rod-like parts of both the halves are united in the mid-line. It is a large omnivore and extensively used in aquaculture. India is by far the largest producer of rohu, followed by Bangladesh and Myanmar. 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. Which of the following is respiratory organ of scorpion ? (i) The first or mandibular arch forms the jaws. They are of two types- spines (single ray) and soft rays (segmented rays). Catla catla is the fastest growing Indian major carp amongst fin fishes. Chemistry. 7(2/5). Tripus is the modification of transverse process of third vertebra, and it is the last element of Weberian apparatus. On either side of centrum is present the transverse process or parapophysis. Basisphenoids are absent. All these bones bear no teeth. Chordata, Osteichthyes, Rohu Fish, Skeleton of Rohu Fish, Vertebrates, Zoology. Suspensorium is formed of two bones, the hyomandibular and symplectic. 49-52. 15.7) is placed anterior to anal fin, at the level of cloaca. The cranium and sense capsules are firmly united together. Dermotrichia support the fold of the fin. Identify the parts labelled as A,B,C,D and E - 13683255 The pectoral fin is supported by nineteen lepidotrichia which are attached with four somactidia (radials). In fishes, it forms the part of the skull. It includes seven paired arches uniting in the mid-ventral line. Drawing Page 01: Labelled diagram of External Feature of Labeo rohita. Frontals articulate antero-laterally with the supraorbitals and postero-laterally with the postfrontals. Mass production of intergeneric hybrid catla (Catla catla x Labeo rohita) and its growth in ponds, small and large reservoirs of Madhya Pradesh. The tail is homocercal. On the role of zooplankton in the nutrition of carps fry. The neural spine of the first vertebra is formed of two small pieces called claustrum and scaphium. It was discovered by Weber in 1820 who regarded them to be ear ossicles. In between scaphium and tripus is present a stout ligament. (iii) A mesocoracoid situated above the coracoid and anterior to the scapula. Indian. In: P. Keshavanath & K.V. The outgrowths corresponding to the parapophyses are fused with the centrum and unite in the middle ventral line, forming a haemal arch.
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