Induced breeding of endangered spiny eel (Mastacembelus armatus) using PG extract

The objective of the study is to upgrade the knowledge of fish comportments in the special sector of Great Zab river where has to be construct the Weir for Deralok Hydropower Plant; in way of collected all information related to the actual life of fish and to find out the fishes that are naturally found in Deralok during the period from December 2013 to February 2015 in the sector to be affected by the weir for adding extra information about fishes' habits and immigration of fishes. A total of 82 freshwater fishes from Deralok during the survey period, belong to 11 species, namely:

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“…Sometimes stays partially buried in fine substrate. Enter flooded forest (Roberts, 1993;Serajuddin and Pathak, 2012;Coad, 2015;Ali et al, 2018).…”

Section: Mastacembelus Mastacembelus (Banks and Solander In Russell mentioning

confidence: 99%

Survey And Ichthyofauna of Great Zab River in Deralok Hydropower Plant

Mizory

Abdulrahman

2020

juod

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“…Few studies have been published on the effectiveness of using various doses of synthetic hormones for arti cial propagation of various species of freshwater eels. They are ovaprim, HCG (Human Chorionic Gonadotropin), Pituitary Gland (PG), and Ovulin (Hasan et al, 2016;Islam et al, 2018;Ali and Taslima, 2013;Chakraborty, 2008).…”

Section: Introductionmentioning

confidence: 99%

Embryonic developmental stages, different doses of inducing hormones and effect of different larval feeds on growth and survival of spiny eel, Macrognathus aculeatus (Bloch, 1786) larvae

Gamango,

Mishra,

Banik

et al. 2023

Preprint

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Induced breeding of Macrognathus aculeatus was carried out in order to determine the most appropriate dose of carp pituitary extract (CPE) and OVAFISH hormone. The best dose of CPE was 100 mg/kg body weight of female and 45mg/kg body weight of male with fertilization rate 81.34% and the best dose of OVAFISH was 1.5 ml/kg body weight of female and 0.75 ml/kg body weight of male with fertilization rate 91.96%. The fertilized eggs were round, sticky, demersal in nature and greenish in color. The perivitelline space of fertilized eggs was observed in 17 min. The First cleavage appeared at 56 min after fertilization (AF), producing two equal blastomeres. The cell division was completed in 4.17h. The fertilized egg took 6.47, 10.54, and 15.12 h to reach morula, blastula, and gastrula stage respectively. The eggs were hatched 34.17h AF at 27-28°C. Five days old post-hatchlings were reared for four weeks in a 160 L tanks using four different diets i.e., artificial feed, mix zooplankton, artemia nauplii and egg custard. The finding showed that hatchlings fed on mix zooplankton had a higher specific growth rate (SGR) (9.60±0.25). The significantly higher mean survival rate was also observed in larvae fed with mix zooplankton (47.67±11.25%) followed by artemia nauplii (38.5±5.4%) and artificial powdered feed (18.17±3.68%) for 28 days experiment. Our finding suggests CPE best dose @ 100mg/kg body weight for female and 45 mg/kg body weight for male and best dose of OVAFISH @1.5 ml/kg body weight of female and 0.75 ml/kg body weight of male for induced breeding. While in larval rearing experiment highest survival and growth rate was obtained in the larvae fed with mix zooplankton for 28 days trial.

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Spawning biology, breeding, and larval rearing techniques for Xenentodon cancila (Hamilton) for aquaculture and recreational use in Bangladesh: The first approach

Paul,

Sarker,

Sultana

et al. 2024

Fisheries &Amp; Aquatic Life

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The study examined Xenentodon cancila (Hamilton) breeding biology, reproduction, and larval rearing. In this study, gonadosomatic index (GSI) and fecundity were measured for breeding biology every 15 days. Nine doses of common carp pituitary gland (CPG), human chorionic gonadotropin (HCG), and Ovaprim for breeding were administered, except in the control treatment that was without hormones. Mustard oil cake (D1), powdered feed (D2), and one-day-old live tilapia (Oreochromis sp.) larvae (D3) were used to determine larval survival after 28 days. From the end of May to mid-July, the mean GSI value exceeded 15 ± 0.72%, peaking at 16.02 ± 1.28% in June. Mean fecundity ranged from 110 ± 13.34 to 2961 ± 318.57, peaking at the end of June 2019, which indicated that this was the peak breeding season for X. cancila. The best spawning was with CPG at 20 mg kg−1 fish body weight (BW) and Ovaprim at 1.0 ml kg−1 BW, but the control group (B) and the group administered 500 IU kg-1 HCG (H1) did not spawn. Latency and hatching periods were 19-21 and 260-288 h, respectively. The highest fertilization, hatching, and survival rates were 92 ± 4.63%, 69 ± 5.52%, and 66 ± 4.11% with 20 mg kg−1 CPG (C2), while the next closest value was recorded with 1.0 ml kg−1 Ovaprim (O2). After 28 days, D3 had the highest survival rate (47.5 ± 4.62%), followed by D2 (31 ± 2.42%), and D1 (18 ± 1.54%). The findings will be useful for hatcheries, fish farmers, the ornamental fish sector, and biodiversity protection.

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Induced breeding of endangered spiny eel (Mastacembelus armatus) using PG extract

Cited by 3 publications

References 1 publication

Survey And Ichthyofauna of Great Zab River in Deralok Hydropower Plant

Survey And Ichthyofauna of Great Zab River in Deralok Hydropower Plant

Embryonic developmental stages, different doses of inducing hormones and effect of different larval feeds on growth and survival of spiny eel, Macrognathus aculeatus (Bloch, 1786) larvae

Spawning biology, breeding, and larval rearing techniques for Xenentodon cancila (Hamilton) for aquaculture and recreational use in Bangladesh: The first approach

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