Seasonal changes in the pituitary gonadotrops during tha annual reproductive cycle of the Murrel Channa punctatus (Bloch)
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منابع مشابه
Histopathology of the liver of Indin Murrel Channa punctatus (Bloch) exposed to Phenolic Effluents
The aim of this study was to examine the histological changes in the liver of fish Channa punctatus (Bloch) for a short term (8day) and long term (30 days) exposure in response to the Phenolic Industrial effluents of Bhilai Steel plant. Fishes were exposed in different concentration (low .01%, .015%, .02, .025%) and ( high concentration 10%, 20%, 30%) of Phenolic effluent. Tissu sections of the...
متن کاملEffect of different protein levels on reproductive performance of snakehead murrel Channa striatus (Bloch 1793)
In this study the effect of different protein levels on reproductive performance of Channa striatus was conducted. Snakehead juveniles (65.5±0.2 g) were randomly distributed into nine homogenous groups of 75 fish each. Three isocaloric experimental diets differing in protein levels were prepared. The experiment lasted for 8 months and gonadosomatic index, absolute fecundity, egg diameter, numbe...
متن کاملEffect of sublethal exposure of Cartap on hypothalamo-neurosecretory system of the freshwater spotted murrel, Channa punctatus (Bloch).
In order to record the effect of carbamate pesticide on hypothalamus of Channa punctatus, fish were exposed to sublethal concentration (0.18 mg l(-1), 30% LC50 for 96 hr) of Cartap for 24, 48, 72 and 96 hr under static bioassay condition. Hypothalamo-neurosecretory complex of the murrel consisted mainly of nucleus preopticus (NPO), nucleus lateralis tuberis (NLT) and their axonal tracts. NPO is...
متن کاملIsolation, purification and characterization of the egg-yolk proteins from the oocytes of the indian freshwater murrel, Channa punctatus (Bloch).
In oviparous organisms, yolk accumulation in the oocytes is critical and indispensable for the development of the newly hatched young ones. In fish and many other oviparous vertebrates, the major constituents of the egg-yolk are synthesized as a precursor in the liver. The precursor is transported to the oocyte for uptake and cleaved into major yolk proteins lipovitellin, phosvitin and beta'-co...
متن کاملPurification of vitellogenin from the plasma of Indian freshwater murrel, Channa punctatus (Bloch) by different methods: a comparative study.
Plasma from estrogenized, [32P] NaH2PO4-injected murrel, Channa punctatus was collected in the presence of proteolytic inhibitors and subjected to different separation procedures singly or in combination, viz., gel filtration chromatography on Ultrogel AcA 34, ion-exchange chromatography on DEAE sephacel, or selective precipitation with dimethylformamide or with Mg2+: EDTA in order to isolate v...
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ژورنال
عنوان ژورنال: Boletim de Zoologia
سال: 1998
ISSN: 2526-3358,0101-3580
DOI: 10.11606/issn.2526-3358.bolzoo.1988.122373