Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Haematological studies of climbing perch (Anabas testudineus Bloch)
Sukasem, N.,Ruangsri, J.,Supamattaya, K.
Songklanakarin Journal of Science and Technology , 2005,
Abstract: Some blood parameters of the climbing perch (Anabas testudineus Bloch) i.e. red (RBC) and white (WBC) blood cell count, percent haematocrit (HTC), hemoglobin, plasma protein as well as hepatosomatic index (HSI) were studied. There were no statistically significant difference (p>0.05) in average body weight and length of fish from the earthen pond and net cage culture, which were 16.85±1.46 g and 16.24±2.42 g, respectively, for the weight and 10.02±0.25 and 9.74±0.37 cm, respectively, for the length. Haematologicalstudies revealed that RBC, WBC including percent HTC levels of the fish from earthen pond and net cage were not significantly different (> 0.05). Whereas hemoglobin and serum protein concentration of the fish sampling from net cage were higher than those sampled from the earthen pond (p<0.05), with value of 12.21± 0.91 g/dl and 11.12±0.85 g/dl for hemoglobin and 4.61±0.50 mg/dl and 3.87±0.62 mg/dl for serum protein, respectively. HSI of the fish cultured in the earthen pond was significantly (p<0.05) higher than that of fish reared in net cage, with value of 1.93±0.12% and 1.66±0.12%, respectively.
Growth and production performances of crossbred climbing perch koi, Anabas testudineus in Bangladesh  [cached]
A.H.M. Kohinoor
International Journal of Agricultural Research, Innovation and Technology : IJARIT , 2012,
Abstract: The study was performed for evaluating the growth and production performances of crossbred climbing perch (Anabas testudineus) during August to October 2009. The crossbred groups of fish were produced by crossing between native climbing perch and Thai climbing perch (A. testudineus). Growth and production performances was compared at grow out condition between crossbred groups in the two reciprocal crosses of treatments viz. T1: Native climbing perch (♀) × Thai climbing perch (♂) and T2: Thai climbing perch (♀)×Native climbing perch (♂. At the same time, they were compared also with their respective control F1 pure line groups i.e. T3: Native climbing perch (♀) × Native climbing perch (♂) and T4: Thai climbing perch (♀) × Thai climbing perch (♂). It was evident from the results that among the treatments in grow out system, the highest mean harvesting weight was 69.25±9.01 g found in T4 (Thai climbing perch), which was significantly different (P<0.05) from all other treatments. Whereas, T3 (native climbing perch) also showed the lowest mean harvesting weight 33.38±8.74 g and showed significant differences (P<0.05) among all the treatments. The mean harvesting weight of both the crossbred groups i.e. T1 and T2 were 50.83±6.65 and 59.94±7.83 g, respectively and these results were statistically insignificant (P>0.05) between them but significant among all other treatments. The highest (93.60%) and lowest (83.06%) survival rates were observed in Thai koi (T4) and native Koi (T3) parental stocks, respectively. Wider variations in terms of productions performances were observed among the treatments, where the gross production of T1, T2, T3 and T4 were 2,753±96.67, 3,401±73.26, 1,733±168.47 and 4,051±185 kg/ha, respectively. The productions obtained from crossbred groups were at intermediate compared to their control pure line groups. Higher FCR mean value was observed in native control line (T3), while, lower FCR mean value was observed in Thai control line (T4).
Some aspects in early life stage of climbing perch, Anabas testudineus larvae  [PDF]
Thumronk Amornsakun,Wasan Sriwatana,Ponpanom Promkaew
Songklanakarin Journal of Science and Technology , 2005,
Abstract: The sexual maturity of female climbing perch, Anabas testudineus was studied by determining fecundity and gonadosomatic index (GSI). It was found that the size at sexual maturity of female climbing perch was 15.20±1.24 cm (mean±SD) in total length and 61.10±17.32 g in body weight. The eggs were floating and rounded. The fertilized eggs had a diameter of 830±39 μm. The fecundity was 24,120.5±3,328.24 ova/ fish and gonadosomatic index (GSI) was 10.4±2.5%. Newly hatched larvae of climbing perch were produced by induced spawning using chemical injection (Suprefact and Motilium). The sexually mature fishes were cultured in fiber-glass tank (water volume 300 liters) with the ratio of male and female brooders 2:1. The fertilization rate, hatching out and hatching rate experiments were carried out using a 15-liter glass aquarium (water volume 10 liters) containing 7,000-9,000 eggs. It was found that the eggs were floating and rounded. The fertilized eggs had a diameter of 830±39 μm. The average fertilization rate was 92.67%, hatching out was 20 hr 30 min and average hatching rate was 87.44% at a water temperature of 27.0-30.5oC. Sampling of the newly-hatched larvae was done at 2-hour intervals, when 20 of them were randomly taken and preserved in 10% buffered formalin for later deter-mination of yolk absorption time. Observation using a microscope revealed that newly hatched larvae were 2.02±0.20 mm in total length and had yolk sacs of 111.33±46.19 mm3 in volume. The yolk sacs were completely absorbed within 92 hr after hatching at a water temperature of 27.0-30.5oC. Up until full mouth development (start of feeding), 2-hourly samplings of twenty newly hatched larvae were taken from an aquarium for observation of the size of mouth opening. All the larvae had open mouths about 28 hr after hatching (2.95±0.59 mm TL), with the mouths measuring 328.42±32.23 mm in height. The feeding experiments were carried out using a 15-liter glass aquarium (water volume 10 liters) containing 1,000 larvae aged 1 days post-hatching (just before the mouth opened). They were fed with rotifer at a density of 10 ind/ml. Twenty larvae were collected at random from the aquarium at 2-hourly intervals, preserved in 10% buffered formalin, and then dissected to determine the presence of rotifer in the digestive tract. The digestive tracts were fixed at 32 hr of hatching at water temperatures of 27.0-30.5oC, and measured477.63±47.80 mm in mouth height. The average number of rotifer in the digestive tract at the start of feeding was 1.50 individual/larva. A starvation experiment was carried ou
Trichodian anabasi sp.n. (Cilioiphora: Trichodinidae) from Climbing Perch, Anabas testudineus (Bloch, 1795) (Anabantidae) in Chittagong
Ghazi S.M. Asmat,Noor Mohammad,Nazma Sultana
Pakistan Journal of Biological Sciences , 2003,
Abstract: A population of trichodinid (Ciliophora: Trichodinidae) was found in the gills of climbing perch, Anabas testudineus (Bloch, 1795) and was described as a new species. It is characterized by large body dimensions and having uniformly stained, dark central area at the centre of the adhesive disc; broad blade with angular and slightly rounded distal margin and flat tangent point, but almost parallel anterior and posterior margin; stout and cylindrical central part with bluntly rounded point which extends slightly more than halfway to the y-axis; and the ray is slightly curved in the posterior direction with anterior margin parallel to the y+1 axis and distinct central groove. Approximately 19.6% of the host fishes (45 out of 230) were infected with the ciliate on their gills during August 1999 and December 2001, The prevalence of this ciliate was higher during the post monsoon and colder period of the year. The variation is recorded and discussed. The species is probably more closely related to Trichodina ngoma, T. kwando, T. frenata and T. mutabilis.
Molecular Characterization of Branchial aquaporin 1aa and Effects of Seawater Acclimation, Emersion or Ammonia Exposure on Its mRNA Expression in the Gills, Gut, Kidney and Skin of the Freshwater Climbing Perch, Anabas testudineus  [PDF]
Yuen K. Ip, Melody M. L. Soh, Xiu L. Chen, Jasmine L. Y. Ong, You R. Chng, Biyun Ching, Wai P. Wong, Siew H. Lam, Shit F. Chew
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0061163
Abstract: We obtained a full cDNA coding sequence of aquaporin 1aa (aqp1aa) from the gills of the freshwater climbing perch, Anabas testudineus, which had the highest expression in the gills and skin, suggesting an important role of Aqp1aa in these organs. Since seawater acclimation had no significant effects on the branchial and intestinal aqp1aa mRNA expression, and since the mRNA expression of aqp1aa in the gut was extremely low, it can be deduced that Aqp1aa, despite being a water channel, did not play a significant osmoregulatory role in A. testudineus. However, terrestrial exposure led to significant increases in the mRNA expression of aqp1aa in the gills and skin of A. testudineus. Since terrestrial exposure would lead to evaporative water loss, these results further support the proposition that Aqp1aa did not function predominantly for the permeation of water through the gills and skin. Rather, increased aqp1aa mRNA expression might be necessary to facilitate increased ammonia excretion during emersion, because A. testudineus is known to utilize amino acids as energy sources for locomotor activity with increased ammonia production on land. Furthermore, ammonia exposure resulted in significant decreases in mRNA expression of aqp1aa in the gills and skin of A. testudineus, presumably to reduce ammonia influx during ammonia loading. This corroborates previous reports on AQP1 being able to facilitate ammonia permeation. However, a molecular characterization of Aqp1aa from A. testudineus revealed that its intrinsic aquapore might not facilitate NH3 transport. Hence, ammonia probably permeated the central fifth pore of the Aqp1aa tetramer as suggested previously. Taken together, our results indicate that Aqp1aa might have a greater physiological role in ammonia excretion than in osmoregulation in A. testudineus.
Glycolipids as Potential Energy Molecules during Starvation in Climbing Perch, Anabas testudineus (Bloch)  [PDF]
Padmavathi Godavarthy,Y. Sunila Kumari
International Journal of Zoology , 2014, DOI: 10.1155/2014/476798
Abstract: Glycolipids are membrane lipids which act as cellular markers and also provide energy for the cells. The present study is an attempt to understand whether glycolipids can act as energy sources during fasting. To achieve this, we selected and subjected Anabas testudineus to short-term (15 days) and long-term (60 days) laboratory starvation. We estimated glycolipids biochemically using a standard protocol in six different tissues. Results showed a selective decline in glycolipid concentration in certain tissues, and also an increase was observed in some tissues. Short-term fasting led to a decline in glycolipids in tissues such as brain ( ), accessory respiratory organ ( ), pectoral and lateral line muscle. Liver and kidney ( ) reported an increase. Long term starvation also resulted in a decline in tissues such as liver ( ), kidney ( ), brain, and accessory respiratory organ. Muscle tissue, that is, both the pectoral ( ) and lateral line muscle ( ), showed an increase in the glycolipid fraction. This selective decline in glycolipid content of certain tissues suggests a possible utilization of these lipids during starvation and the significant upsurge observed in certain tissues suggests a simultaneous synthesis occurring along the degradation, probably reducing the oxidative stress created by ROS (reactive oxygen species). 1. Introduction Fish, during their life time, are capable of withstanding prolonged periods of natural starvation caused due to migration, reproduction and also during fish farming [1–3]. There are several instances where certain fish species have been reported to survive without food for several months or even for years as reported in case of silver eels which go without food for even four years [4, 5]. When the animal is in a state of food deprivation there are lines of evidence wherein the animal differentially utilizes proteins, carbohydrates, and lipids. Utilization of energy fuels is not uniform in all fish but is species dependent. In fish like Acipenser oxyrinchus and Oncorhynchus mykiss, parallel to glycogen mobilization, lipids are utilized initially and proteins are utilized as the last reserve [6]. In certain other fish species, liver glycogen stores are preserved and either protein is degraded via gluconeogenesis, or protein and lipid may be mobilized as energy substrates [6–8]. Apart from these regular energy substrates, other energy molecules such as glycolipids, which are membrane lipids which have glucose and galactose attached to the lipid unit [9], may also be considered as potential sources of energy by the starving
Iftisar Rozikin,Untung Bijaksana,Akhmad Murdjani
Fish Scientiae , 2016, DOI: -
Abstract: The Reproductive ability of parent fishwhich just finish spawming are common with stage I of gonadal maturity takes for a long time. Gonad may not mature if it is not given treatment. Doses of oodev between 0,3 – 07 cc/kgs body weight give effect in inducing gonadal maturation. This Research shows that the highest fecundity was an average of 33190 eggs obtained fromom Treatment C, and the largest egg diameter was an average of 0,7 mm also obtained in the treatment C. The highest HIS score was in treatment C (0,95%), while the highest IGS value obtained in treatment A (13,183%). The result of the Observations on the gonad histology climbing perch parent fish was the treatment with Oodev hormones caused the development of maturity level. Change in values and levels of water quality were considered metting the standard for live fish climbing perch fish. The statistical test result on all the above test parameters showed that al was not significantly different among all treatment given; thus from the given hypothesis Ho was accepted and H1 was rejected which means that Oodev injection dose did not significantly affect the maturation procces. The teratmen with Oodev was more than the level witout the use of Oodev Hormones (Control). This is because of the role of the FSH in Oodev Hormone influenced the development of biosytesis of estradiol -17 β and gonad.
Tail and Fin Rot Disease of Indian Major Carp and Climbing Perch in Bangladesh  [PDF]
M.M. Rahman,H. Ferdowsy,M.A. Kashem,M.J. Foysal
Journal of Biological Sciences , 2010,
Abstract: Tail and fin rot disease occurred in Indian major carp, catla (Catla catla) and climbing perch, koi (Anabas testudineus) in fish farms located at two districts of Bangladesh. The affected fish showed lesion and erosion on the tail and fins. Approximately, 40% mortality was recorded in those farms. The present study was conducted to isolate and identify the bacterial pathogen causing the disease, to conduct artificial infection challenge for confirmation of the pathogen and to know the antibiotic sensitivity pattern of the isolates. Bacteria were isolated from the lesions of diseased fish on Cytophaga agar medium where they developed characteristic yellowish pigmented colonies. They were identified as Flavobacterium columnare based on biochemical characterization tests. All of the isolates were found to be highly virulent for carp fish (Puntius gonionotus) in artificial infection challenge experiment but, virulence for koi fish (A. testudineus) were found to be varied. These isolates exhibited sensitivity to antibiotics chloramphenicol, oxytetracycline, erythromycin, streptomycin, but some of them were resistant to sulphamethoxazole and all were resistant to gentamicin and cefradine.
Accumulation Of Fluoride In Etroplus Suratensis, Oreochromis Mossambicus And Anabas Testudineus Caught From The Surface Fresh Water Sources In Alappuzha Town, Kerala, India  [PDF]
International Journal of Innovative Research in Science, Engineering and Technology , 2013,
Abstract: Fluoride Naturally Occurring In Ground Water And Surface Water Is Known To Be Potent To Cause Serious Dental And Skeletal Fluorosis In Areas Where Water Contains Much More Than The Required Amount Of Fluoride. Aim Of This Study Was To Relate The Presence Of Fluoride In Water With Fresh Water Fishes Of The Corresponding Aquatic Body From Which Water Samples Were Collected. Three Species Of Fishes Etroplus Suratensis (Pearl Spot), Oreochromis Mossambicus (Tilapia), And Anabas Testudineus (Climbing Perch) Were Analyzed For Fluoride. The Samples Of Fishes And The Water Samples From Where Fish Was Caught Were Collected From July 2012, October 2012 And January 2013 From The Surface Fresh Water Sources Of Alappuzha Town. A Mean Fluoride (N=9) Concentration Of 0.051±0.01 (Mean±SD), 0.042±0.02 And 0.035±0.02 Were Shown By The Water Samples Collected In July, October And January Respectively. Though Fluoride Is Present In The Water Samples At A Very Low Concentration, There Is Considerable Fluoride Content In The Fish Samples Collected From The Same Water Source. The Accumulation Of Fluoride By Fishes Was Found To Be Highly Variable With Respect To Species And Month. E. Suratensis Had Accumulated 4.071±0.71 Ppm Fluoride In July, 274.29±2.54 Ppm In October And 2.35±0.42 Ppm In January. O. Mossambicus Was Estimated To Contain 18.14±0.95, 23.33±1.05 And 12.195±1.22 Ppm Fluoride In July, Oct And Jan Respectively. No Fluoride Was Detected In A. Testudineus Samples Collected In October, Whereas It Accumulated 6.695±0.43 And 28.18±2.01 Ppm Fluoride In July And January Respectively.
Growth and yield performance of shingi, Heteropneustes fossilis and koi, Anabas testudineus in Bangladesh under semi-intensive culture systems
B.K. Chakraborty
International Journal of Agricultural Research, Innovation and Technology : IJARIT , 2012,
Abstract: Production potential of shingi, Heteropneustes fossilis and koi, Anabas testudineus in polyculture were assessed at a stocking density of 2, 47,000 and 3, 70,500 ha-1, respectively in treatment T1 and T2. Monoculture of H. fossilis and A. testudineus was designed at a stocking density of 2, 47,000 ha-1 in treatment T3 and T4, respectively. Culture period of shingi was 120 days and koi was 100 days in all treatments. All fingerlings were of the same age at stocking, with a mean weight of 2.54±0.08 g for shingi and 0.50±0.01 g for koi, respectively. Commercial fish feeds (30.0% crude protein) supplied at the rate of 100 to 5% of total biomass twice daily. Fish production in treatment T1, T2, T3 and T4 were 18,803±111, 12,388±115, 10,042±5 kg ha-1 day-120 and 22,176±7 kg ha-1 day-100, respectively. The feed conversion ratio (FCR) was significantly (P<0.05) lower in T4 than that of the other three treatments. The net financial benefits incurred from treatment T1, T2, T3 and T4 were Bangladeshi Taka 17,65,769; 6,691; 15,83,990 and 16,29,409 BDT ha-1, respectively. The mean differences of gross yields and net benefits among different treatments were significant (P<0.05). The polyculture technology of shingi and koi, and monoculture technology of koi may help to meet the dietary needs and improve the socio-economic status of the people of Bangladesh.
Page 1 /100
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.