نتایج جستجو برای: sexual maturity at size

تعداد نتایج: 4151801  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

C. Sümer D. Aytug Oskay H. Özgür Yesilçimen İ. Balık, Y. Emre

In the present study, age, growth, length-weight relationship and reproduction were investigated in gilthead seabream (Sparus aurata L., 1758) collected from Beymelek Lagoon (Antalya, Turkey) between February 2006 and July 2007. The age, total length and weight of samples ranged from 0+ to 4 years, 10.6 to 35.5cm, and 18 to 928g, respectively. Growth was described by the standard form of the vo...

C. Sümer, D. Aytug Oskay, H. Özgür Yesilçimen , İ. Balık, Y. Emre,

In the present study, age, growth, length-weight relationship and reproduction were investigated in gilthead seabream (Sparus aurata L., 1758) collected from Beymelek Lagoon (Antalya, Turkey) between February 2006 and July 2007. The age, total length and weight of samples ranged from 0+ to 4 years, 10.6 to 35.5cm, and 18 to 928g, respectively. Growth was described by the standard form of the vo...

A. Amirjanati M. Bagheri Tavani M. Norouzi, Sh. Ghodrati

This study was conducted to determine the concentration of five heavy metals, including lead, cadmium, mercury, arsenic, and chromium in muscle, liver and gills of the gray mullet, Liza aurata in southern part of the Caspian Sea. The samples were collected during sexual maturity (in the fall) and sexual rest (in the spring). The mean concentration of lead, cadmium, mercury, arsenic, and chromiu...

Amirjanati , A., Bagheri Tavani , M., Ghodrati, Sh., Norouzi , M.,

This study was conducted to determine the concentration of five heavy metals, including lead, cadmium, mercury, arsenic, and chromium in muscle, liver and gills of the gray mullet, Liza aurata in southern part of the Caspian Sea. The samples were collected during sexual maturity (in the fall) and sexual rest (in the spring). The mean concentration of lead, cadmium, mercury, arsenic, and chromiu...

2014
Verónica Williner María Victoria Torres Débora Azevedo Carvalho Natalia König

The relative growth of a number of morphological dimensions of the South American freshwater crab Trichodactylusborellianus (Trichodactylidae) were compared and related to sexual dimorphism. Crabs were collected from ponds in the Middle Paraná River in Argentina. A regression model with segmented relationship was used to test for relative growth between these measurements where breakpoints infe...

Journal: :International journal of fauna and biological studies 2022

This work provides information on Mugilidae fish reproduction in Grand-Lahou lagoon. From September 2009 to August 2011, for each specimen sampled, the total length cm, mass and eviscerated g, gonads cg, sex maturity stages were recorded. Parameters studied size at first sexual maturity, period ratio. The is reached between 16.1 cm 21.0 four of five species 41.6 Mugil cephalus females. Liza dum...

2016
Haisheng Ding Yan Luo Min Liu Jingshu Huang Dequan Xu

Meishan boars are known for their early sexual maturity. However, they exhibit a significantly smaller testicular size and a reduced proportion of Sertoli cells and daily sperm production compared with Duroc boars. The testes of Duroc and Meishan boars at 20, 75 and 270 days of age were used for histological and transcriptome analyses. Haematoxylin-eosin staining was conducted to observe histol...

Journal: :دامپزشکی 0
سارا کوهی لای گروه بیولوژی دریا، دانشگاه آزاد اسلامی، واحد تهران شمال • شهربانو عریان گروه زیست شناسی دانشکده علوم، دانشگاه تربیت معلم تهران همایون حسین زاده صحافی مؤسسه تحقیقات شیلات، تهران مریم رضاییان بخش بافت شناسی دانشکده دامپزشکی دانشگاه تهران ندا خسروپناه گروه بیولوژی دریا، دانشگاه آزاد اسلامی، واحد تهران شمال فردوس ابراهیم پور بخش بافت شناسی دانشکده دامپزشکی دانشگاه تهران

in the present study histological studies was conducted after the female abramis brama orientalis was exposed to eight treatment phases in which lhrha2 (3 μg/kg), metoclopramide (5 mg/kg), and chlorpromazine (10 mg/kg) were inoculated. the treatments were characterized by combined and solitary injections, control group (o injection), and experimental group (saline). the results showed that all ...

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