Gonadal morphogenesis and sex differentiation in cultured Ussuri catfish<i>Tachysurus ussuriensis</i>

Pan, Zhengjun; Zhu, Chuankun; Wang, H.; Zhou, Feng-Jian; Qiang, Xiaogang

doi:10.1111/jfb.13388

Cited by 9 publications

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the clustering pattern of germ cells is sex-dimorphic post-colonisation, where undifferentiated gonads undergo mitosis. The observation of both type I and II mitotic proliferation of germ cells in embryonic gonads of G. holbrooki was comparable to those reported for medaka [44], catfish, Tachysurus ussuriensis [45], rainbow trout, Oncorhynchus mykiss [46] and zebrafish [47], suggesting these early events are largely conserved across teleosts. Specifically, the type I mitosis of germ cells resembled stem cell-like self-renewal division as described in medaka [48].…”

Section: Morphology and Clustering Of Germ Cells Is Sex-dimorphic In ...supporting

confidence: 84%

Gonad Ontogeny and Sex Differentiation in a Poeciliid, Gambusia holbrooki: Transition from a Bi- to a Mono-Lobed Organ

Razmi

Tran

Patil

2023

Biology

View full text Add to dashboard Cite

Despite their uniqueness, the ontogeny and differentiation of the single-lobed gonads in the poeciliids are very poorly understood. To address this, we employed both cellular and molecular approaches to systematically map the development of the testes and ovary in Gambusia holbrooki from pre-parturition to adulthood, encompassing well over 19 developmental stages. The results show that putative gonads form prior to the completion of somitogenesis in this species, a comparatively early occurrence among teleosts. Remarkably, the species recapitulates the typical bi-lobed origin of the gonads during early development that later undergoes steric metamorphosis to form a single-lobed organ. Thereafter, the germ cells undergo mitotic proliferation in a sex-dependent manner before the acquisition of the sexual phenotype. The differentiation of the ovary preceded that of the testes, which occurred before parturition, where the genetic females developed meiotic primary oocytes stage I, indicating ovarian differentiation. However, genetic males showed gonial stem cells in nests with slow mitotic proliferation at the same developmental stage. Indeed, the first signs of male differentiation were obvious only post-parturition. The expression pattern of the gonadosoma markers foxl2, cyp19a1a, amh and dmrt1 in pre- and post-natal developmental stages were consistent with morphological changes in early gonad; they were activated during embryogenesis, followed by the onset of gonad formation, and a sex-dimorphic expression pattern concurrent with sex differentiation of the ovary (foxl2, cyp19a1a) and testes (amh and dmrt1). In conclusion, this study documents for the first time the underlying events of gonad formation in G. holbrooki and shows that this occurs relatively earlier than those previously described for ovi- and viviparous fish species, which may contribute to its reproductive and invasive prowess.

show abstract

Section: Morphology and Clustering Of Germ Cells Is Sex-dimorphic In ...supporting

confidence: 84%

Gonad Ontogeny and Sex Differentiation in a Poeciliid, Gambusia holbrooki: Transition from a Bi- to a Mono-Lobed Organ

Razmi

Tran

Patil

2023

Biology

View full text Add to dashboard Cite

show abstract

“…Tachysurus ussuriensis (Pan et al, 2017) and Paralichthys olivaceus (Yang et al, 2018). In these species, clusters of spermatogonia were the precursors of the testicular lobules.…”

Section: Discussionmentioning

confidence: 98%

The ultrastructure of spermatogenic cells and morphological evaluation of testicular development in the silver pomfret (Pampus argenteus)

Yang

Wang

et al. 2021

Anat Histol Embryol

View full text Add to dashboard Cite

The silver pomfret (Pampus argenteus) is a widely distributed and economically important marine fish in the Indo‐Pacific. In this study, we acquired the second generation of wild P. argenteus by artificial breeding and further studied the testicular development and ultrastructure of spermatogenesis. The results of gonadosomatic index (GSI) showed the spawning period of this marine fish was from April to June. Besides, through morphological analysis, we found that P. argenteus had an anastomosing tubular testis surrounded by a layer of tunica albuginea, in which spermatogenesis occurred in cysts where the synchronous germ cells were completely surrounded by the cytoplasmic projection of Sertoli cells. Meanwhile, based on submicroscopic characteristics, the germ cells are classified into nine different types. During the ontogenesis of testis, both the early stage of spermatogenesis and sperm were observed in P. argenteus. At sperm maturation stage, different types of spermatozoa and activation of sperms occurred non‐synchronously in the tubules. Cytoplasmic bridges also were observed among synchronous germ cells within the cysts, suggesting an interrelated and differentiated relationship among these germ cells.

show abstract

Differential expression analysis and identification of sex-related genes by gonad transcriptome sequencing in estradiol-treated and non-treated Ussuri catfish Pseudobagrus ussuriensis

Pan

Zhu

Chang

et al. 2021

Fish Physiol Biochem

View full text Add to dashboard Cite

Gonadal morphogenesis and sex differentiation in cultured Ussuri catfishTachysurus ussuriensis

Cited by 9 publications

References 38 publications

Gonad Ontogeny and Sex Differentiation in a Poeciliid, Gambusia holbrooki: Transition from a Bi- to a Mono-Lobed Organ

Gonad Ontogeny and Sex Differentiation in a Poeciliid, Gambusia holbrooki: Transition from a Bi- to a Mono-Lobed Organ

The ultrastructure of spermatogenic cells and morphological evaluation of testicular development in the silver pomfret (Pampus argenteus)

Differential expression analysis and identification of sex-related genes by gonad transcriptome sequencing in estradiol-treated and non-treated Ussuri catfish Pseudobagrus ussuriensis

Contact Info

Product

Resources

About