Comparing histology and gonadosomatic index for determining spawning condition of. Determination of the stage of sexual maturation of an individual fish is commonly assessed using either microscopic or macroscopic staging. Gonadosomatic index of fish is related to spawning and reproduction of fish. Using the gonadosomatic index to estimate the maturity.
Find out what is the most common shorthand of gonadosomatic index on. Weve compiled a database of documents pertaining to the pallid sturgeon and the recovery efforts. About 166 specimens with total length ranging from 9. Goa listenio is a state in india within the coastal region known as the konkan in western india. The maximum gonadosomatic index of the female was 1. An attempt was made to assess the gonadosomatic index gsi of an indigenous coldwater fish schizothorax richardsonii commonly known as. Gonadosomatic index has been used as an indicator ofreproductive activity ofnamibian sardine matthews 1964, and in the absence ofinformation on eggs and larvae, could be used to give an indication of peak spawning periods. Annual correlative changes in gonads and pituitary. Therefore, this present study seeks to document information. The gonadosomatic indexes gsi in range and average for female and male were 0.
Time course sampling showed that final oocyte maturation and subsequent ovulation occurred from afternoon to. This contribution deals with the annual changes in the gonadosomatic index gsi for most species of large mammals in croatia, which includes their prerutting, rutting and postrutting period. Henshaw4,5 1department of evolution, ecology and behaviour, institute of integrative biology, university of liverpool, liverpool, l69 7zb, u. Gonadosomatic index is within the scope of wikiproject animals, an attempt to better organize information in articles related to animals and zoology. Although we have many document titles, not all listings have actual documents attached if there is no link to a pdf, we do not have a copy of the document. The objective of this paper was to derive timeseries of condition factor and gonadosomatic index for sardine. Berlinsky and specker 1991 were first to describe the reproductive cycle of female striped bass in any detail. Abstract we compared gonadosomatic index gsi and histological analysis of ovaries for identifying reproductive periods of fishes to determine the validity of using gsi in future studies. A comparative study of the gonadosomatic index gsi and gonad gross morphology of african cat.
Statistical analysis using spss 22 software served to understand and document the effects of pome on nile tilapias gonadosomatic index, fecundity and. Changes in circulating levels of estrogen e 2 and androgen testosterone were evaluated in relation to gonadosomatic index gsi. The live blue crabs were transferred to the laboratory to measure the following variables. It provides a comparable value of the gsi in relation to weight and age of the animals. The gonadosomatic index gsi and fecundity of the threatened cirrhinus reba hamilton was studied over a period of one year from january to december 2015 in the ganges river northwest bangladesh. Length maturity, fecundity, and gonadosomatic index of caspian kutu. Documents are found by searching author, year, andor topic below. Reproduction is the most critical stage in the life cycle of a species, which determines its survival and success. The sex ratio, gonadosomatic index, fecundity and diet composition of hepsetus odoe in eleyele lake, southwest, nigeria were investigated to document aspect of biology an. Babasaheb ambedkar marathwada university, aurangabad. Gonadosomatic index and some hematological parameters in.
The concentration of nonylphenol, bisphenol a and 17. The sex ratio, gonadosomatic index, stages of gonadal development and fecundity of sompat grunt pomadasys jubelini off lagos coast, nigeria were investigated. Gonadosomatic index as a percentage, hepatosomatic index as a percentage, testosterone in nanograms per millilitre. Variations in hepatosomatic index hsi and gonadosomatic. The sex ratio, gonadosomatic index, diet composition and. The webs largest and most authoritative acronyms and abbreviations resource.
The objective ofthis paper was to derive timeseries ofcondition factor and gonadosomatic index for sardine. It is used to estimate or measure reproductive capacity. According to the results obtained the highest mean of total length 186. Gonadosomatic and hepatosomatic indexes of the freshwater. The maturity ogive from macroscopic analysis overestimates the probability of maturity in most length strata figure 5, table 3. Dynamics of gonadosomatic index of fish with indeterminate. Pdf the evolution of gonad expenditure and gonadosomatic. It measures reproductive strain of fishes by measuring general body weight ratios. Reproductive aspects in addition to condition factor, gonadosomatic index gsi and hepatosomatic index hsi were analyzed based on weight of the body length, total body weight and organ weights of the fish. The determination of the gonadosomatic ratio percentage of the body volume of the animal occupied by the gonad makes it possible to follow the. Determination of biometry and gonadosomatic index in male.
Trend in the gonadosomatic index of some large mammals in. On the use of gonosomatic index article pdf available in comparative biochemistry and physiology part a physiology 731. The evolution of gonad expenditure and gonadosomatic index. The list of acronyms and abbreviations related to gsi gonadosomatic indices. Pdf gonadosomatic index and fecundity of threatened reba. Individuals were adults and homogeneous size and weight, except those from mb site which were smaller fish, in both sexes, were collected mannwhitney test, p gonadosomatic index is the ratio of fish gonad weight to body weight. Gonadosomatic index has been used as an indicator of reproductive activity of namibian sardine matthews 1964, and in the absence of information on eggs and larvae, could be used to give an indication of peak spawning periods. This study showed the interspawning variation in the predicted gsi of japanese anchovy using the gravimetric oocyte packing density method. Study of gonadosomatic index of fresh water fish cyprinus carpio ashwini g. Mean gsi was significantly different between all histological stages for suckermouth minnow and red shiner.
In an effort to improve such screening assays, the goal of the present study was to determine whether the gonadosomatic index gsi of female fathead minnows pimephales promelas, as assessed via external characteristics, influences their response to redc exposure. Gsi is the persentage of gonad weight and fish weight ratio including gonads that expressed gonadal changes quantitatively 14. Evaluating gonadosomatic index as an estimator of reproductive condition in the invasive round goby, neogobius melanostomus author. The gonadosomatc index gsi is a reliable indicator of changes in nutritional and. Studies on the fecundity f, gonadosomatic index gsi. Changes in the gonadosomatic index gsi helps to determine the reproductive season of the fish arruda et al. Low this article has been rated as lowimportance on the projects importance scale. The estimated parameters of the maturity ogive were significant p sykes 1839 from nira river bhor, district pune, maharashtra india.
Unlimited viewing of the articlechapter pdf and any associated supplements and figures. Abstract the seasonal changes in hepatosomatic index hsi, gonadosomatic index gsi and plasma estradiol. Short documentary film l goa in 1953s rare video youtube. Accuracy of gonadosomatic index in maturity classification. Utilizing the gonadosomatic index gsi for hatchery evaluation and monitoring, as refined by usfwsmcfwco. Article pdf available november 2014 with 2,302 reads. Seasonal changes in hepatosomatic index, gonadosomatic index. Pdf comparing histology and gonadosomatic index for. The results obtained indicated adverse effects on the gonads as well as on liver weight. Gonadosomatic index and testis morphology of common carp. Reference manual, fao, 1997, computerized information series fisheries.
Age, growth, and gonadosomatic index gsi of mediterranean horse mackerel trachurus mediterraneussteindachner, 1868 in the eastern black sea cemalettin sahin1, nazl. Stub this article has been rated as stubclass on the projects quality scale. Looking for the abbreviation of gonadosomatic index. Gonadosomatic index and length of males and females the main characteristics of collected fish are given in table 1. Microscopic staging examines either the internal cellular structure histology or the external appearance of the wholeoocyte whole mount. The size at maturity was 95 mm for male and 115 mm for female. Fecundity and gonadosomatic index of synodontis ngrita. Gonadosomatic and hepatosomatic indices of freshwater fish. Gonadosomatic index as a confounding variable in fish. Gonadosomatic index and biometry in this male species. Gonadosomatic index an overview sciencedirect topics. The gonadosomatic index gsi is widely used as a simple measure of reproductive capacity, but its validity has often been questioned.