Morphological and osteological malformations in hatchery bred redline torpedo fish, Sahyadria denisonii (Day 1865) (Cyprinidae)

Abstract

Malformaciones morfológicas y oseas en ejemplares de criadero de barbo de línea roja, Sahyadria denisonii (Day 1865) (Cyprinidae)Se publican, por primera vez, malformaciones morfológicas y osteológicos de Sahyadria denisonii producidas en criadero. Se fotografiaron anomalías morfológicas con cámara digital y de rayos X digital. De 950 larvas producidas, sólo 12 individuos (1,26 %) presentaron algún tipo de anomalía, incluyendo lordosis, escoliosis, cifosis, semi-opérculo, deformidad de la aleta, deformidad de la boca, deformación de la cabeza y deformidades múltiples. La causa exacta de anomalías no se pudo determinar, pero se discuten las posibles etiologías. Sin embargo, el registro actual es significativo debido a la aparición de deformidades en peces ornamentales de agua dulce de criadero, para los que se considera la reproducción inducida como la clave de su conservación.Palabras clave: Deformidad, Reproducción inducida, Radiografía, Ghats Occidentales. AbstractThis is the first published report on morphological and osteological malformations in hatchery produced Sahyadria denisonii. Morphological abnormalities were photographed with a digital camera and digital X-ray. In present study, out of 950 larvae produced only 12 individuals (1.26%) were found to have any type of abnormality, including lordosis, scoliosis, kyphosis, semi-operculum, fin deformity, mouth deformity, head deformity and multiple type deformities. The exact cause of abnormalities could not be definitively determined, but the possible aetiologies are discussed. The present record is, nevertheless, significant owing to the occurrence of deformity in hatchery produced young ones of a freshwater ornamental fish for which induced breeding is considered to be the key to conservation.

Studies on induce breeding performance of magur (Clarias batrachus) in FRP hatchery installed at Nalbari district, Assam

“…The deformity of larvae was highest in the H-3 hatchery which might be due to fertilization of poor egg, adverse impact of some factors during breeding period like inbreeding, insufficiency of nutrients, disease, oxygen reduction, water current, sudden changes in temperature etc. which was similar to the deformities reported by Sahoo et al [15,16] and Sanjeevan [17] . They reported that deformities of larvae is due to the impact of several unfavorable biotic and abiotic factors during hatchery operation.…”

The Effect of Orally Supplemented Melatonin on Larval Performance and Skeletal Deformities in Farmed Gilthead Seabream (Sparus aurata)

“…Operculum complex and caudal fin complex were the most influenced structures. In gilthead seabream and many other species, operculum complex deformities are frequent [ 9 , 29 , 30 , 31 , 32 ]. The frequency of opercular anomalies on Ctrl groups (9.7 and 21.3%) was in the range of 6.3 to 43.2% as registered in previous studies conducted over the past two decades [ 9 , 30 ].…”