极度濒危河流鲶鱼丽塔丽塔的胚胎和幼虫发育

Q3 Agricultural and Biological Sciences Eurasian Journal of Biosciences Pub Date : 2011-07-01 DOI:10.5053/EJOBIOS.2011.5.0.13
M. Mollah, K. Taslima, H. Rashid, Z. Hossain, M. Sarowar, Muhammad Rakibul Kabir Khan
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引用次数: 11

摘要

本研究对淡水鲶鱼丽塔丽塔的胚胎和幼虫发育进行了研究。采用人工授精技术采集成熟卵和精子,将受精卵置于连续供水的小型圆形孵化场中孵育。受精卵透明,外壁,球形,无粘连,呈褐色,直径在1.3至1.6毫米之间。第一次卵裂发生在受精后25-30分钟,温度为28±1℃。在相同的温度范围内,受精后22 h开始孵化,24 h内完成孵化。新孵化的幼虫体长2.0 mm,无口,无色素沉着,孵化后48 ~ 60 h开始摄食。迄今为止,这是第一次描述淡水鲶鱼的早期胚胎和幼虫发育。因此,本研究结果为建立丽塔的大规模制种技术提供了有价值的信息。
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Embryonic and larval development of critically endangered riverine catfish Rita rita
The present study was carried out to investigate the embryonic and larval development of freshwater catfish Rita rita. The mature eggs and sperms were collected by using artificial insemination technique and fertilized eggs were incubated in mini circular hatchery with provision of continuous water supply. The fertilized eggs were transparent, demarsal, spherical, non-adhesive and brownish in colour with a diameter ranging between 1.3 to 1.6 mm. First cleavage occurred within 25-30 min post-fertilization at temperature of 28±1°C. Hatching started 22 h post-fertilization and completed within 24 h at the same temperature range. Newly hatched larvae were 2.0 mm in length devoid of mouth and pigmentation and started feeding within 48-60 h post-hatching. To date, this is the first time the early embryonic and larval development of freshwater catfish R. rita is described. Thus the findings of the present study provide valuable information that may help establishing the large scale seed production technique of Rita.
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来源期刊
Eurasian Journal of Biosciences
Eurasian Journal of Biosciences Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)
CiteScore
1.20
自引率
0.00%
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0
期刊介绍: EurAsian Journal of BioSciences (Abbrev. Eurasia J Biosci or EJOBIOS) is an international, refereed electronic journal. It publishes the results of original research in the field of biological sciences restricted tomorphology, physiology, genetics, taxonomy, ecology and biogeography of both prokaryotic and eucaryotic organisms. The journal encourages submission of manuscripts dealing with plant biology, animal biology, plant physiology, microbiology, hydrobiology, ecology and environmental science, ethnobiology, biodiversity and conservation biology. EurAsian Journal of BioSciences publishes original articles in the following areas: -Agriculture, Fisheries & Food -Anatomy & Morphology -Behavioural Sciences -Biology, Biochemistry and Biotechnology -Biophysics -Biology Education -Cellular Biology and Anatomical Sciences -Ecology, Evolution & Environment -Entomology -Forestry -General Biology -Genetics & Heredity -Life Sciences - Other topics -Microbiology and Immunology -Molecular Biology -Mycology -Palaeontology -Parasitology -Pharmacology & Pharmacy -Physiology and Related Sciences -Plant Sciences -Toxicology -Veterinary Sciences -Virology -Zoology
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