Histological study of the developing gonads of endangered freshwater spiny eel, Mastacembelus armatus during the reproductive cycle
نویسندگان
چکیده
منابع مشابه
Fecundity and gonado-somatic index of wild freshwater spiny eel Mastacembelus armatus (Lacepede) from Kishoreganj region of Bangladesh
Fecundity and gonado-somatic index (GSI) of wild freshwater spiny eel Mastacembelus armatus were estimated from haor region of Kishoreganj district of Bangladesh. Estimated fecundity ranged from 2,235 to 19,493 for the fish measuring from 25 to 54 cm and weighing from 79 to 345 g. The minimum, median and maximum ova diameter was 0.20, 1.90 and 2.20 mm, respectively. The average numbers of ova p...
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The parasite fauna of 50 specimens of spiny eel obtained from two lakes, Zarivar (in Kurdistan province) and Parishan (in Fars province) and one river, Heleh (Booshehr province) were examined during the year 2003. A total of nine parasite species were found. Gills of spiny eel were infected with Ichthyophthirius multifiliis , Trichodina pediculus (protozoa) and Mastacembelocleidus heteranchorus...
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A total of 128 spiny eels Mastacembelus mastacembelus (Mastacembelidae) were collected from theGreater Zab river at Iski Kalak town, west of Erbil city, Kurdistan region, Iraq, from July 2007 to the end ofJune 2008. The fish were examined for ecto and endo parasites. The study revealed the existence of 16species of parasites (with a total prevalence of 89.06%) including: two species of protozoa...
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in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.
study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
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ژورنال
عنوان ژورنال: Journal of the Bangladesh Agricultural University
سال: 2017
ISSN: 2408-8684,1810-3030
DOI: 10.3329/jbau.v14i2.32702