Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The grasshoppers are ideal materials to study various meiotic stages of spermatogenesis due to their easy availability, fairly large chromosomes, and fewer numbers of chromosomes. It is easy to make temporary squash preparation of grasshopper testes; however, it is usually difficult for the beginners to differentiate between stages of meiosis. In view of this, we demonstrated the method of identification of meiotic stages by chromosome number and chromosome conformation, taking spermatogonial meiosis of Locusta migratoria manilensis as an example. We described briefly the mitosis of spermatogonia and the spermatogenesis of this species as well.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3724/sp.j.1005.2012.01628 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Oxidative stress index of porcine follicular fluid influences meiotic maturation and embryo development during culture.
Vet World
July 2025
Bio-Innovation Research Center, Tokushima University, 779-3233 Tokushima, Japan.
Background And Aim: Porcine follicular fluid (pFF) is frequently used to mimic the follicular microenvironment during maturation (IVM) of oocytes. However, the influence of oxidative stress levels within pFF on oocyte quality and embryo development remains unclear. This study aimed to investigate how varying oxidative stress index (OSI) of pFF affect porcine oocyte meiotic progression, fertilization, and embryonic development during IVM.
View Article and Find Full Text PDFTestis-specific protein HSF5 is essential for proper chromatin organization and transcriptional reprogramming to drive pachynema progression.
Zool Res
September 2025
Department of Urology & Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310016, China. E-mail:
Chromatin remodeling and transcriptional reprogramming play critical roles during mammalian meiotic prophase I; however, the precise mechanisms regulating these processes remain poorly understood. Our previous work demonstrated that deletion of heat shock factor 5 (HSF5), a member of the heat shock factor family, induces meiotic arrest and male infertility. However, the molecular pathways through which HSF5 governs meiotic progression have not yet been fully elucidated.
View Article and Find Full Text PDFUnlabelled: Meiotic crossovers are needed to produce genetically balanced gametes. In mammals, crossover formation is mediated by a conserved set of pro-crossover proteins via mechanisms that remain unclear. Here, we characterize a mammalian pro-crossover factor HEIP1.
View Article and Find Full Text PDFFunctional Spermatogenesis Across Testicular Developmental Stages in Neomale Large Yellow Croaker () Revealed by Histology and Gonadal Specific Cellular Markers.
Biology (Basel)
August 2025
Key Laboratory of Mariculture and Enhancement, Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China.
Gonadal development and spermatogenesis critically influence fish reproductive performance. Neomales (genetically female but functionally male) are indispensable for generating all-female populations, yet their spermatogenesis remains understudied. In the present study, we systematically investigated gonadal maturation in neomales of the large yellow croaker (), an economically important marine species exhibiting sexually dimorphic growth.
View Article and Find Full Text PDFDistinct classes of 21- and 24-nt phasiRNAs suggests diverse mechanisms of biogenesis and function in rice anther development.
Plant Genome
September 2025
Donald Danforth Plant Science Center, Saint Louis, Missouri, USA.
PhasiRNAs (phased small interfering RNAs) are a major class of plant small RNAs (sRNA) known to be key regulators in male reproductive development of maize (Zea mays) and rice (Oryza sativa), among other plants. Earlier research focused primarily on premeiotic 21-nucleotide (nt) phasiRNAs and meiotic 24-nt phasiRNAs, while new studies uncovered a premeiotic class of 24-nt phasiRNAs. The biogenesis and function of these phasiRNAs remain unclear.
View Article and Find Full Text PDF