Bacterial load in twelve freshwater fishes of four feeding habits in Bangladesh

Rahman, Mohammad Shafiqur; Hasan, Mahmud; Mahmud, Zahid Hayat; Islam, Md. Sirajul

doi:10.3329/dujbs.v19i2.8956

Cited by 70 publications

(111 citation statements)

References 7 publications

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“…More importantly, the question of maximum size of this fish remains uncertain. While in earlier literature the longest total length recorded for a male was 275 cm (Banarescu and Coad, 1991), the common TL in males is 183 cm (Rainboth, 1991) and the maximum weight is listed with about 54 kg (Rahman, 1989). Our findings indicate that the fish are now much smaller.…”

Section: Resultscontrasting

confidence: 45%

Length-weight relationships of wild and farmed Tor putitora from Pakistan

Naeem¹,

Salam²,

Ishtiaq³

2010

Journal of Applied Ichthyology

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Length-weight relationships (W = a TL b ) were estimated for wild and farmed Tor putitora obtained from River Korang, Islamabad and Attock District, Pakistan, respectively. The results indicate, W = 0.0171 TL 2.85 for wild and W = 0.1000 TL 2.33 for farmed. Total length ranged from 18.0 to 40.2 cm for male and 31.6 to 37.0 cm for female wild Tor putitora, indicating that the fish are now much smaller. The first reference of length-weight relationships for Tor putitora is provided.

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Section: Resultscontrasting

confidence: 45%

Length-weight relationships of wild and farmed Tor putitora from Pakistan

Naeem¹,

Salam²,

Ishtiaq³

2010

Journal of Applied Ichthyology

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“…This species is widely distributed throughout the Indian sub-continent including Bangladesh, Bhutan, India, Nepal, and Pakistan (Rahman, 1989;Talwar and Jhingran, 1991;Menon, 1999;Petr, 1999;Mirza, 2003). This species is widely distributed throughout the Indian sub-continent including Bangladesh, Bhutan, India, Nepal, and Pakistan (Rahman, 1989;Talwar and Jhingran, 1991;Menon, 1999;Petr, 1999;Mirza, 2003).…”

Section: Introductionmentioning

confidence: 99%

Size at first sexual maturity, fecundity, length-weight and length-length relationships ofPuntius sophore(Cyprinidae) in Bangladeshi waters

Hossain

Rahman

Miranda

et al. 2012

Journal of Applied Ichthyology

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Summary The present study describes the size at first sexual maturity, fecundity, length–weight (LWRs) and length–length relationships (LLRs) of the pool barb, Puntius sophore, using data obtained from different geographical locations in Bangladesh. A total of 905 specimens were caught by traditional fishing gear from March 2010 to February 2011. Additionally, a total of 121 females were collected from a commercial catch of the Padma River during June–July 2011 to estimate size at first maturity and to determine fecundity. Total length (TL), fork length (FL) and standard length (SL) were measured with digital slide calipers. Individual body weights (BW) were determined for all specimens, and gonad weights (GW) from 121 females were weighed to an accuracy of 0.001 g. The female gonadosomatic index (GSI) was calculated as [GSI (%) = (GW/BW) × 100]. Female size at first maturity was estimated using GSI and TL as indicators, and estimated as 5.00 cm TL in the Padma River. Specimens larger than 5.00 cm TL were used to determine fecundity. Mean total fecundity was 5300 ± 2700, ranging from 1580 to 16590. A positive exponential correlation was recorded between total fecundity and total length (r2 = 0.421). Relative fecundity ranged from 466 to 4036 (mean 1100 ± 580) in the Padma River. The LWR of pooled data for sexes combined was estimated as BW = 0.0155 TL2.98 as ancova revealed no significant differences in LWRs between rivers (P > 0.05). All LLRs were highly correlated (r2 > 0.983; P < 0.001), and ancova analyses further indicated that LLRs did not differ between rivers (P > 0.05). These results will help in further studies on the population assessment of the species.

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“…Periodically, it gulps air from the water surface, and the air is channeled to the labyrinth organs for gaseous exchange. During drought, A. testudineus stays in pools associated with submerged woods and shrubs (Sokheng et al 1999) or buries under the mud (Rahman 1989). Furthermore, it can travel long distances on land between pools of water, covering several hundred meters per trip when the air is sufficiently humid (Davenport and Abdul Martin 1990).…”

mentioning

confidence: 99%

Cystic fibrosis transmembrane conductance regulator in the gills of the climbing perch, Anabas testudineus, is involved in both hypoosmotic regulation during seawater acclimation and active ammonia excretion during ammonia exposure

Wilson²,

Loong

et al. 2012

J Comp Physiol B

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This study aimed to clone and sequence the cystic fibrosis transmembrane conductance regulator (cftr) from, and to determine the effects of seawater acclimation or exposure to 100 mmol l⁻¹ NH₄Cl in freshwater on its mRNA and protein expressions in, the gills of Anabas testudineus. There were 4,530 bp coding for 1,510 amino acids in the cftr cDNA sequence from A. testudineus. The branchial mRNA expression of cftr in fish kept in freshwater was low (<50 copies of transcript per ng cDNA), but significant increases were observed in fish acclimated to seawater for 1 day (92-fold) or 6 days (219-fold). Branchial Cftr expression was detected in fish acclimated to seawater but not in the freshwater control, indicating that Cl⁻ excretion through the apical Cftr of the branchial epithelium was essential to seawater acclimation. More importantly, fish exposed to ammonia also exhibited a significant increase (12-fold) in branchial mRNA expression of cftr, with Cftr being expressed in a type of Na⁺/K⁺-ATPase-immunoreactive cells that was apparently different from the type involved in seawater acclimation. It is probable that Cl⁻ excretion through Cftr generated a favorable electrical potential across the apical membrane to drive the excretion of NH₄⁺ against a concentration gradient through a yet to be determined transporter, but it led to a slight loss of endogenous Cl⁻. Since ammonia exposure also resulted in significant decreases in blood pH, [HCO₃⁻] and [total CO₂] in A. testudineus, it can be deduced that active NH₄⁺ excretion could also be driven by the exit of HCO₃⁻ through the apical Cftr. Furthermore, A. testudineus uniquely responded to ammonia exposure by increasing the ambient pH and decreasing the branchial bafilomycin-sensitive V-type H⁺-ATPase activity, which suggests that its gills might have low NH₃ permeability.

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Bacterial load in twelve freshwater fishes of four feeding habits in Bangladesh

Cited by 70 publications

References 7 publications

Length-weight relationships of wild and farmed Tor putitora from Pakistan

Length-weight relationships of wild and farmed Tor putitora from Pakistan

Size at first sexual maturity, fecundity, length-weight and length-length relationships ofPuntius sophore(Cyprinidae) in Bangladeshi waters

Cystic fibrosis transmembrane conductance regulator in the gills of the climbing perch, Anabas testudineus, is involved in both hypoosmotic regulation during seawater acclimation and active ammonia excretion during ammonia exposure

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