Results 1 to 10 of about 33,621 (168)

Histopathological Effects of Environmental Pollutants on the Reproductive System of Zebrafish

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2023
Environmental pollutants cause health problems as well as affect living or non-living things in terrestrial and aquatic ecosystems. Many harmful substances, the use of which is increasing today, directly or indirectly cause deterioration in the quality ...
Sevda Bağdatlı   +3 more
doaj   +1 more source

Gonad Transcriptome Analysis of the Razor Clam (Sinonovacula constricta) Revealed Potential Sex-Related Genes

open access: yesFrontiers in Marine Science, 2021
The razor clam, Sinonovacula constricta is a commercially important bivalve in the western Pacific Ocean, yet little is known about the mechanisms of sex determination/differentiation and gametogenesis. In the present study, the comparative transcriptome
Hanhan Yao   +7 more
doaj   +1 more source

Contraceptive-Pill-Sourced Synthetic Estrogen and Progestogen in Water Causes Decrease in GSI and HSI and Alters Blood Glucose Levels in Climbing Perch (Anabas testudineus)

open access: yesHydrobiology, 2022
The present study was conducted to understand the changes in gonads and hematological parameters in climbing perch (Anabas testudineus) exposed to synthetic estrogen and progestogen [mixture of ethinylestradiol (EE2) and desogestrel (DES)].
Chathuri Weerasinghe   +7 more
doaj   +1 more source

Histological Analysis of Gonadal Ridge Development and Sex Differentiation of Gonads in Three Gecko Species

open access: yesBiology, 2023
Reptiles constitute a highly diverse group of vertebrates, with their evolutionary lineages having diverged relatively early. The types of sex determination exemplify the diversity of reptiles; however, there are limited data regarding the gonadal ...
Izabela Rams-Pociecha   +2 more
doaj   +1 more source

Effects of methyl farnesoate injection on spermatozoa number and reproductive indices in the narrow-clawed crayfish Pontastacus leptodactylus [PDF]

open access: yesNauplius, 2022
In this study, the effect of methyl farnesoate (MF) injection on haemolymph MF levels, spermatozoa production and the reproductive indices of gonadosomatic index (GSI), testicular index (TI) and vasosomatic index (VSI) were investigated in males of ...
Mehmet Bal, Ayşe Gül Harlıoğlu
doaj   +1 more source

Gonadal Sex Differentiation: Supporting Versus Steroidogenic Cell Lineage Specification in Mammals and Birds

open access: yesFrontiers in Cell and Developmental Biology, 2020
The gonads of vertebrate embryos are unique among organs because they have a developmental choice; ovary or testis formation. Given the importance of proper gonad formation for sexual development and reproduction, considerable research has been conducted
Martin A. Estermann   +2 more
doaj   +1 more source

Sexual Differentiation and Primordial Germ Cell Distribution in the Early Horse Fetus

open access: yesAnimals, 2021
It was the aim of this study to characterize the development of the gonads and genital ducts in the equine fetus around the time of sexual differentiation. This included the identification and localization of the primordial germ cell population.
Dragos Scarlet   +8 more
doaj   +1 more source

A biomonitoring study of Diadema setosum: metal bioaccumulation and current status in Iskenderun Bay, eastern Mediterranean

open access: yesOceanological and Hydrobiological Studies, 2023
Concentrations of aluminum, chromium, cobalt, nickel, cadmium, lead, manganese, iron and zinc were determined in sea urchin species, Diadema setosum from Iskenderun Bay in December 2022.
Uğurlu Erkan
doaj   +1 more source

46,XX DSD: Developmental, Clinical and Genetic Aspects

open access: yesDiagnostics, 2021
Differences in sex development (DSD) in patients with 46,XX karyotype occur by foetal or postnatal exposure to an increased amount of androgens. These disorders are usually diagnosed at birth, in newborns with abnormal genitalia, or later, due to ...
Camelia Alkhzouz   +4 more
doaj   +1 more source

Transcriptome sequencing analysis of sex-related genes and miRNAs in the gonads of Mytilus coruscus

open access: yesFrontiers in Marine Science, 2022
Mytilus coruscus is a significant economic species in China’s eastern coastal areas. As a dioecious species, it lacks secondary sexual characteristics, which makes it difficult for selective breeding.
Min Wang   +15 more
doaj   +1 more source

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