Salinity intrusion affects early development of freshwater aquaculture species pabda, Ompok pabda

Alam, Md Rushna; Sharmin, Sadia; Islam, SM Majharul; Alam, Ariful; Ehiguese, Friday Ojie; Pattadar, Shib Nath; Shahjahan, Md

doi:10.1016/j.aqrep.2020.100476

Cited by 19 publications

(10 citation statements)

References 28 publications

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“…The embryo of some strains of Nile tilapia can tolerate up to 20 ppt salinity (despite reductions in hatching success; Fridman et al, 2012), which exceeds the tolerance rate seen in this study. The 24 h LC50 value of salinity for the embryo of a freshwater aquaculture species pabda, Ompok pabda, was 15.07 ppt with lower hatching success (Alam et al, 2020), which is higher than the tolerance rate seen in this study. In another study, reduced hatching success was recorded in different salinities (0, 5, 10, 15, 20, 25, and 32 ppt) after the transfer of freshwater spawned eggs of Nile tilapia, Oreochromis niloticus (Watanabe et al, 1985).…”

Section: Discussioncontrasting

confidence: 79%

“…However, all of these deformities are probably due to complications faced by embryos adapting to osmoregulatory challenges in different salinities (Ekrem et al, 2012;Hayes et al, 2014). Similar responses to salinity including higher mortality, slower development, and a variety of abnormalities have been observed in the larvae of Nile tilapia (Fridman et al, 2012), catfish, C. gariepinus (Jomori et al, 2012) and pabda, O. pabda (Alam et al, 2020). Some recent investigation suggests that alterations in transepithelial potential (TEP) may serve in a signaling capacity during osmotic acclimation or recovery from injury (Kennard and Theriot, 2020).…”

Section: Discussionmentioning

confidence: 96%

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Influences of Salinity on Embryonic and Larval Development of Striped Catfish Pangasianodon hypophthalmus

et al. 2021

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Salinity intrusion in coastal areas due to climate change is alarming. In this study, the effects of salinity on embryonic and larval development of striped catfish (Pangasianodon hypophthalmus) were studied experimentally. Embryos and larvae were exposed to seven salinity treatments (0, 2, 4, 6, 8, 10, and 12 ppt), each with three replications. Considerable survivability of embryos was recorded up to 6 ppt salinity. Mortality of embryos significantly increased at 8 and 10 ppt salinity, and 100% mortality was displayed within 12 h of exposure at 12 ppt salinity. The rate of hatching was significantly reduced at 8 and 10 ppt salinity. The 24 h lethal concentration (LC50) value of salinity for embryo was 11.24 ppt. Different types of deformities, such as undeveloped yolk sac, elongated gastrula yolk sac, and yolk sac bud, were highest at 10 ppt salinity. Similar to the embryo, considerable survivability of larvae was recorded up to 6 ppt salinity, and 100% mortalities were found within 24 h of exposure at 12 ppt salinity. The 24 and 48 h LC50 values of salinity for larvae were 10.63 and 8.48 ppt, respectively. Several types of deformities, including yolk sac ulceration, spine scoliosis, tail bent, yolk sac edema, and compromised swim bladder inflation, were highest at 10 ppt salinity after 48 h of exposure. Within 24 h of exposure, about 80% yolk sac of the larvae was absorbed at 8 and 10 ppt salinity, while 30%–50% yolk sac was absorbed at 0–6 ppt salinity. Growth rates in terms of length and weight were higher at 0, 2, and 4 ppt salinity and moderate at 6 and 8 ppt salinity. Overall, the current findings define the limits to optimize hatchery procedures for the culture of this species in low saline brackish water.

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Section: Discussioncontrasting

confidence: 79%

Section: Discussionmentioning

confidence: 96%

Influences of Salinity on Embryonic and Larval Development of Striped Catfish Pangasianodon hypophthalmus

et al. 2021

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“…The lethal salinity level for black bream was 60 ppt (Partridge & Jenkins, 2002). Most fry of Ompok pabda were dead after 24 hour exposure to 2.5 ppt saline (Alam et al, 2020). Grass carp, Ctenopharyngodon has been reported to experience cardiac arrest associated with an ion imbalance following a long-term high concentration level of salinity (Enayati et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Effects of Salinity on Growth Performance and Blood Parameters of Butter Catfish, Ompok bimaculatus

Sarker¹,

Mian²,

Iqbal³

2022

ase

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The study was conducted in laboratory conditions to evaluate the effects of salinity on growth, survival, and blood chemistry of butter catfish, Ompok bimaculatus fingerlings. The fry, initially sized as 7.01 cm length and 1.69 g weight, were assigned in four different salinity treatments i.e., 0 ppt (T C ), 2 ppt (T 1 ), 4 ppt (T 2 ) and 8 ppt (T 3 ) with three replications, with 21 fry in each replication as well. Fish were fed commercial catfish diets with 43% protein and 8% lipid at 5% body weight three times a day for 90 days. The control (T C ) treatment showed the significantly highest growth performance among treatments, (p<0.05). The T 3 treatment group showed a lethal parameter and all fish died within 72 hours of exposure to it. The survival rate was recorded as 90.47% for T c , 71.43% for T 1 and 47.61% for T 2 treatment. The mean weight and length gain 6.17 g and 4.93 cm observed in T 1 followed by 4.59 g and 3.06 cm in T 2 treatment. The specific growth rate (SGR) (%) mean weight gain, length gain, average daily weight gain, average daily length gain and percentage length gain were (%) found to be significantly higher in Tc in comparison to those in the salinity treated groups (p<0.05). Significantly higher hemoglobin and WBC were observed in T c among treatments and had the lowest value recorded in T 1 and T 2 . There were no significant changes between RBC counts among treatments.

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“…Similarly, the reproduction and conservation management of butter catfish Ompok pabda (Hamilton-Bouchanan, 1822) changes their IUCN status from 'Near Threatened' to 'Endangered' species (Chakraborty et al 2010;IUCN Bangladesh 2015). Now, aquaculture is very extensive for Ompok pabda (Hamilton-Bouchanan, 1822) in Bangladesh and the Indian region (Chaklader et al 2016;Alam et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Bivalves (Mollusca: Bivalvia) in Malaysian Borneo: status and threats

et al. 2021

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Species checklists enlist the species existing within a distinct geographical biome and assist as an indispensable input for evolving conservation and administration strategies. The arenas of conservation ecology and biology face the challenge of exaggerated biodiversity, accredited to the non-recognition of taxonomic inconsistencies. The study’s goals are to organize all scattered taxonomic information regarding bivalve molluscs from Malaysian Borneo, i.e. Sarawak and Sabah, under one umbrella. Available literature regarding Malaysian Borneo was reviewed. The published taxonomic data on bivalve species, conservation status, inconsistencies, habitats (marine, fresh, and brackish), research aspects, threats, and conservation strategies are presented. A critical review of the checklists and distributional records of the class Bivalvia from Malaysian Borneo and subsequent validation of species names with the World Register of Marine Species (WoRMS) database revealed that currently 76 bivalve species from 12 orders and other entities, 18 superfamilies, and 27 families have been recorded from the area. Twenty-six inconsistencies with WoRMS were found, and the corrected names are presented. The study indicates most of the enlisted bivalve species have not been evaluated by the IUCN Red List authority and have ‘Least Concern’ or ‘Data Deficient’ status for Malaysian Borneo. To date, published documents on conservation decision strategies and guidelines for future research are not good enough. Nevertheless, potential threats and their remedies for bivalves in the enriched Malaysian Borneo ecosystems are discussed herein.

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Salinity intrusion affects early development of freshwater aquaculture species pabda, Ompok pabda

Cited by 19 publications

References 28 publications

Influences of Salinity on Embryonic and Larval Development of Striped Catfish Pangasianodon hypophthalmus

Influences of Salinity on Embryonic and Larval Development of Striped Catfish Pangasianodon hypophthalmus

Effects of Salinity on Growth Performance and Blood Parameters of Butter Catfish, Ompok bimaculatus

Bivalves (Mollusca: Bivalvia) in Malaysian Borneo: status and threats

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