scispace - formally typeset
Open Access

A comparative study on the embryonic development ofgynogen, triploid, haploid and normal diploid embryos ofstinging catfish, Heteropneustes fossilis

Reads0
Chats0
TLDR
A slow development and delayed hatching were observed in gynogen and triploid embryos compared to those in normal diploid (control) groups and mass mortality was observed in all chromosomally manipulated groups particularly during the gastrulation stage.
Abstract
UV irradiation and cold shock were applied on the eggs of stinging catfish, Heteropneustes fossilis, to produce haploid,. gynogen and triploid embryos. A comparative account of the various features· of embryonic development in chromosomally manipulated groups viz. haploid, gynogen and triploid and non-manipulated normal diploid group of H fossilis has been discussed. A slow development and delayed hatching were observed in gynogen and triploid embryos compared to those in normal diploid (control) groups. Mass mortality was observed in all chromosomally manipulated groups particularly during the gastrulation stage. The hatchlings of the gynogen, triploid and normal diploid were similar in overall appearance.

read more

Citations
More filters
Journal Article

Comparative study on induced breeding of shing, Heteropneustes fossilis (Bloch) between HCG and PG with different combination

TL;DR: For induced breeding of H. fossilis a dose of PG 10 mg/kg body weight of male and 70 mg/kmbody weight of female in T2 was found to be most effective among the combinations of hormones used.
Journal Article

Induced Breeding of the Stinging Catfish, Heteropneustes fossilis: Comparison among Different Inducing Agents

TL;DR: Breeding success was found to be higher in ovaprim treated individuals in both the experiments in all aspects including latency period, ovulation rate, fertilization rate, hatching rate and incubation period compared to that of PGE and HCG induced individuals.
Journal ArticleDOI

Embryonic and Larval Development of Stinging Catfish, Heteropneustes fossilis, in Relation to Climatic and Water Quality Parameters

TL;DR: In this paper , a series of microscopic observations using a trinocular digital microscope and an analysis of the relationship between larval growth and climate-driven water quality parameters such as temperature, pH, dissolved oxygen, total dissolved solids, alkalinity, and ammonia were performed.
References
More filters
Journal ArticleDOI

Induced gynogenesis in the rainbow trout: Sex and survival of progenies production of all-triploid populations.

TL;DR: The monosex female constitution of gynogenetic offspring confirms the female homogamety in the rainbow trout, and gynogenesis could be an efficient way for producing inbred lines in commercial fish species.
Journal ArticleDOI

Survival, growth and fertility of gynogenetic diploids induced in the cyprinid loach, Misgurnus anguillicaudatus

TL;DR: Gynogenetic fish induced in the loach by applying cold shock to the egg after fertilization with spermatozoa genetically inactivated by ultraviolet-ray irradiation showed lower rates of survival and growth than did the normal diploid controls.
Journal ArticleDOI

Production of gynogenetic and polyploid catfish by pressure-induced chromosome set manipulation

TL;DR: Although the numbers of gynogenetic channel catfish produced were small, the more than 500 viable offspring surviving represent foundation broodstock to facilitate genetic improvement strategies in this commercially important species.
Journal ArticleDOI

Gynogenesis in common carp (Cyprinus carpio L.): I. Effects of genetic manipulation of sexual products and incubation conditions of eggs

TL;DR: The bimodal response of eggs to cold shocks was essentially different from the responses found by other authors who researched gynogenesis in carp using NaCl/urea solutions and temperatures below 24°C for incubation.
Journal ArticleDOI

Efficient production of triploid grass carp (Ctenopharyngodon idella) utilizing hydrostatic pressure.

J.R. Cassani, +1 more
- 01 Jul 1986 - 
TL;DR: Delaying fertilization of ovulated grass carp eggs for up to 30 min did not have a negative effect on triploid conversion or survival compared to controls, and the best heat shock parameters were 42°C for a duration of 1 min starting 4 min after egg-sperm activation resulting in an average of 66.7% (0-est).
Related Papers (5)