نتایج جستجو برای: gonadosomatic index

تعداد نتایج: 396097  

Journal: :Journal of anatolian environmental and animal sciences 2022

This study evaluated the seasonal nutrient content and trace element composition of great Mediterranean scallop (Pecten jacobaeus), which is among economic species. The samples were obtained as by-catch from trawler nets commercial fishing boats operating in Gulf Antalya seasonally between 2017 2018. After determining scallops' growth indices scallops; proximate composition, amino acid analyses...

Journal: :Journal of anatolian environmental and animal sciences 2021

This study was conducted in Oymapınar Dam Lake from March 2016 to February 2017. The investigated the age composition, spawning season, sex ratio, first sexual maturity, and fecundity of chub (S. anatolicus). ages 422 chubs sampled ranged II VIII which 200 (47.39%) were females 222 (52.61%) males. fork lengths weights female varied between 20.0 cm 55.1 93.37 g 2307.88 respectively. oldest group...

Journal: : 2022

Chub mackerel (Scomber japonicus Houttuyn, 1782) were obtained from the commercial fishermen in Çanakkale, Turkey, July, 2017. We examined a total of 40 fish (20 non-infested and 20 infested) assessed biometric indices, haematological parameters serum biochemical variables. The hepatosomatic index gonadosomatic infested chub lower than those fish. Blood haematocrit ratio haemoglobin concentrati...

Journal: :Ribarstvo 2022

Abstract The purpose of this study was to examine various lipid classes as well the protein content in rainbow trout ovaries. A total 80 samples Oncorhynchus mykiss (Walbaum 1792) were collected from Kokernag and Verinag hatcheries (Jammu Kashmir, India) between 2017 2019. mature stage female fish had highest gonadosomatic index (GSI) minimal GSI spent stage. Higher ovary reported during (36%),...

Journal: :Integrated environmental assessment and management 2009
Dennis L Borton Diana L Cook W Kenneth Bradley Raymond E Philbeck Monique G Dubé Nancy J Brown-Peterson William R Streblow

We exposed fathead minnows (Pimephales promelas to 7 concentrations of effluents from pulp mills at 4 Long-Term Receiving Water Study (LTRWS) sites. The primary objective of these investigations was to determine the potential for toxicity, particularly on fish reproduction, of the pulp mill effluents using laboratory tests. These tests were performed as LTRWS fish community assessments were bei...

Journal: :Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü dergisi 2022

In this study, it was aimed to analyses some growth parameters of the invasive Diadema setosum (Leske, 1778) from Iskenderun Bay. For reason, a total 117 samples were collected in September 2021 rocky shores coast Iskenderun. The test diameter D. varied between 24.32 and 81.1 mm with an average 51.8±1.18 length. weight changed 27.14 185.11 g, 84.64±2.77 g. length-weight relationship W = 0.7917*...

Journal: :IOP conference series 2022

Abstract This study aims to determine the effectiveness of adding vitamin C and squid oil commercial feed for broodstock fish ( Anabas testudineus Bloch) on speed gonadal maturation growth. The was conducted three months using a completely randomized design with 4 treatments 3 replications. test were 10 each in treatment hapa, A (Commercial =CF); B (CF + Vit c 2gr/kg; (CF+ ml/kg) D Vitamin 2 g/...

Journal: :Frontiers in Marine Science 2021

In recent years, attaining gonadal maturation in smaller Hilsa ( Tenualosa ilisha ) has become a burning issue for fishery of Bangladesh. Causes early are not yet clearly understood. Along with environmental parameters, genetic differentiation within the population was hypothesized as main driver, and therefore, assessing correlation between gonadosomatic index (GSI) factors analyzing diversity...

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