Academic literature on the topic 'Djombang'

Investigation was conducted on seasonal infestations of caryophyllaeid cestodes in Clarias batrachus of Mymensingh from August 2010 to July 2011. Host fish were collected for examination from different sources of water bodies and fish markets of Mymensingh. Five different parasite species- Djombangia peretrans, Lytocestus indicus, L. birmanicus, L. parvulus and Bovienia serialis were recorded. Percent of infestations was 85.75 with 7.37 parasites per infested host. The prevalence was (100%) in December, April, June, August and September and the lowest (33%) in July. The maximum mean intensity (25.94) was found in December and the minimum (1.5) in May. The highest prevalence was observed in winter season and the lowest was in rainy season. Index of infection and abundance were the highest in winter and the lowest in rainy season. DOI: http://dx.doi.org/10.3329/jbau.v9i2.11051 J. Bangladesh Agril. Univ. 9(2): 351–357, 2011

A total of 115 Clarias batrachus were investigated for parasitic infestation. Out of 1504 parasites recovered from Clarias batrachus, 761 (50.59%) were cestodes, 34(2.26%) trematodes, 58(3.85%) nematodes and 12(0.79%) crustaceans ectoparasite. Cestodes showed the highest prevalence (66.09%) and the collected parasites were Bovienia serialis, Caryophyllaeus laticeps, Balanotaenia bancroftii, Djombangia penetrans, Orientocreadium batrachoides, Orientocreadium clariae, Procamallanus slomei, Spirocamallanus olsenia and ectoparasite Lernaea cyprinacea. Among the 9 species of parasites, P. slomei (28.69%) showed the highest prevalence. The moderate prevalence showed by Bovienia serialis and S. olsenia (21.74), lowest by O. batrachoides (10.43%) and Lernaea cyprinacea (10.43). The overall prevalence and mean intensity of parasite infection were 82.61% and 15.83 respectively. The highest parasitic infestation was found (88.43%) in intestine. Cestodes B. serialis, B. bancroftii and D. penetrans were recovered from stomach and intestine. P. slomei were collected from three regions viz. oesophagus, stomach and intestine, while Lernaea cyprinacea from gill. Seasonally the highest prevalence (90%) and mean intensity (24.27%) was recorded during summer.Bangladesh J. Zool. 43(2): 269-277, 2015

Effects of caryophyllaeid cestode infestations on Clarias batrachus was conducted during the period from August 2010 to July 2011. Fish samples collected from K.R. market, BAU campus came from various waterbodies. Sex, total length (cm), standard length (cm), head length (cm) and weight (g) were recorded. Five different species of caryophyllaeid namely Djombangia penetrans, Lytocestus indicus, L. birmanicus, L. parvulus and Bovienia serialis were identified from the host. Severe infestations of caryophyllaeid cestodes were found in C. batrachus. Changes in the nature of growth and loss of weight as a result of parasitic infestation were noticed. Accordingly length, weight and condition factors were found to be greatly affected. Loss of total length (8.73%) and the highest loss of mean head length (4.49%) were found in smaller infested length group fish. Loss of weight (1.63%) and the highest percentage loss of weight (26.38) were noticed in the small length group while it was 7.44 in large length group. The highest condition factor (1.13) was found in uninfested fish and lowest (0.85) in infested fish. Suggestions were made for further investigation on blood composition and gonadal development of infested host. DOI: http://dx.doi.org/10.3329/jasbs.v38i2.15594 J. Asiat. Soc. Bangladesh, Sci. 38(2): 135-144, December 2012

AbstractDevelopment and morphology of the scolex and mode of attachment of Wenyonia virilis Woodland, 1923, a caryophyllaeid cestode from the silurid Nile fish Synodontis schall (Bloch et Schneider, 1801), were studied by means of light and scanning electron microscopy (SEM). Scolex and genital primordia changes through four stages of juvenile development are described. Longitudinal ridges do not appear on the scolex until the cestode has well defined genital primordia. This is in stark contrast to other caryophyllidean genera in which the basic morphology of the adult scolex becomes evident at the procercoid stage in the oligochaete intermediate host. The scolex of the adult has 13 to 19 prominent longitudinal ridges and deep furrows that come together at the apex to form an apical ring, a protrusible terminal introvert within the apical ring that forms a deep apical pouch when fully retracted, and a central group of Faserzellen. The scolex of W. virilis appears similar to the rugomonobothriate scolex of another African caryophyllid, Monobothrioides chalmersius (Woodland, 1924). Comparisons are made with other caryophyllideans having a scolex with a terminal structure: Monobothrium Diesing, 1863, Djombangia Bovien, 1926 and Caryoaustralus Mackiewicz et Blair, 1980. The terminal introvert may be responsible for attachment in early juvenile stages, but may be supplemented by the longitudinal ridges and furrows later in development. Host tissue appears to be drawn into these furrows that function as weak organs of attachment. We could not determine how the introvert of adult worms functions in attachment. At the site of attachment, the mucosa showed necrosis and degeneration and the submucosa exhibited vacuolization and infiltration with lymphocytes and leucocytes.