Consistent spawning season of the sea urchin Sterechinus neumayeri in the Ross Sea over 5° of latitude: a role for an endogenous oscillator DOI Creative Commons
Mary A. Sewell, Dorothea Heimeier, Ramón Gallego

et al.

Polar Biology, Journal Year: 2024, Volume and Issue: 47(12), P. 1511 - 1525

Published: Oct. 17, 2024

Abstract In temperate broadcast spawners, gamete release within the reproductive period is often triggered by exogenous cues such as phytoplankton concentration, seawater temperature, or day length (photoperiod). Antarctica, little known about to spawning, even well-studied species, sea urchin Sterechinus neumayeri. Here, we determine spawning time in S. neumayeri using of appearance embryos and larvae plankton samples collected from ice with a collapsible net. Collections McMurdo Sound at three locations along Victoria Land Coast Ross Sea [Cape Hallett (72°S), Terra Nova Bay (74°S), Granite Harbour (77°S)] over eight years showed that although there were differences embryo larval abundance between locations, multiple events occurred during late October/early November December, regardless latitude, appeared unrelated moon phase. Exogenous are limited early summer: sites covered light penetration water temperature generally stable. As season on Antarctic Peninsula maritime also October–December, hypothesize an endogenous cue plays role setting gametogenesis perhaps set phytodetrital inputs summer, seasonally breeding urchins deep sea. Further research will be needed test this hypothesis populations .

Language: Английский

Sex determination factor, a novel male-linked gene in the sea cucumber Apostichopus japonicus: Molecular characterization, expression patterns and effects of gene knockdown DOI

Weihan Meng,

Lingnan Kong,

Abulizi Abudula

et al.

Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology, Journal Year: 2025, Volume and Issue: 277, P. 111071 - 111071

Published: Jan. 7, 2025

Language: Английский

Citations

0
Integration analysis of microRNAs and mRNA reveals a regulatory mechanism in gonadal differentiation of sea cucumber Apostichopus japonicus DOI
Xinghai Liu, Ziming Li, Xinyue Tang

et al.

Aquaculture International, Journal Year: 2025, Volume and Issue: 33(2)

Published: Jan. 15, 2025

Language: Английский

Citations

0
Reproductive Physiology and Molecular Mechanisms Underlying Testicular Development and Spermatogenesis in Echinoderms: A Marine Invertebrate Deuterostomes DOI
Ziming Li, Yujia Yang

Molecular Reproduction and Development, Journal Year: 2025, Volume and Issue: 92(1)

Published: Jan. 1, 2025

ABSTRACT Echinoderms exhibit a wide range of reproductive strategies as adaptations to variable environments. The processes gonadal development, germ cell differentiation, and spermatogenesis in echinoderms are crucial physiological that warrant further in‐depth exploration. This review systematically summarizes research from early basic sciences recent studies on male development spermatogenesis, encompassing morphology, histology, physiology, biology, developmental evolutionary biology. We introduce the structural cellular similarities differences among model or non‐model organisms five classes provide insights for future comparative between higher vertebrates lower organisms. regulatory systems involved echinoderm described various aspects including nutritional supply, environmental factors, neurological influences, endocrinological hormonal influences. article aims elucidate echinoderms—organisms at unique nodes—providing valuable materials studying adaptive evolution Additionally, comprehensive summary characterized genes gene markers associated with testes is provided useful information systematic subpopulations. Future can focus molecular changes chromatin remodeling during intercellular communication mediated by receptor‐ligand interactions, our understanding biological networks spermatogenesis.

Language: Английский

Citations

0
Characterization and sexual dimorphic expression of Cytochrome P450 genes in gonads of the sea urchin (Mesocentrotus nudus) DOI Creative Commons

Wei-Yi Su,

Weihan Meng,

Lingnan Kong

et al.

Aquaculture Reports, Journal Year: 2024, Volume and Issue: 36, P. 102137 - 102137

Published: May 17, 2024

Sea urchin (Mesocentrotus nudus) is a commercially significant mariculture species, with its gonads being the exclusive edible parts for humans. Identifying sex-related genes an effective approach elucidating underlying molecular mechanisms of gonad development in sea urchins. Some cytochrome P450 (CYP) superfamily members play critical roles sex differentiation, steroid hormone biosynthesis, and ovarian steroidogenesis. In present study, we identified 83 CYPs assigned to 17 families from gonadal transcriptomic data M. nudus, most clustering within CYP 2 family branches. Furthermore, 11 gender-biased CYPs, including 17A1, 2, 3A24, 4V2, 46A1, as well related 1A1, 1A5, 3, 17A1. The expression patterns those candidate were also analyzed. findings lay foundation further investigating role endogenous synthesis steroids, offering valuable insights into differentiation

Language: Английский

Citations

1
Sex hormones and life histories: an evolutionary perspective DOI
Gustavo M. Somoza, Vance L. Trudeau

Molecular and Cellular Endocrinology, Journal Year: 2024, Volume and Issue: unknown, P. 112369 - 112369

Published: Sept. 1, 2024

Language: Английский

Citations

0
Sex hormones and life histories: an evolutionary perspective DOI
Gustavo M. Somoza, Vance L. Trudeau

Molecular and Cellular Endocrinology, Journal Year: 2024, Volume and Issue: unknown, P. 112372 - 112372

Published: Sept. 1, 2024

Language: Английский

Citations

0
Consistent spawning season of the sea urchin Sterechinus neumayeri in the Ross Sea over 5° of latitude: a role for an endogenous oscillator DOI Creative Commons
Mary A. Sewell, Dorothea Heimeier, Ramón Gallego

et al.

Polar Biology, Journal Year: 2024, Volume and Issue: 47(12), P. 1511 - 1525

Published: Oct. 17, 2024

Abstract In temperate broadcast spawners, gamete release within the reproductive period is often triggered by exogenous cues such as phytoplankton concentration, seawater temperature, or day length (photoperiod). Antarctica, little known about to spawning, even well-studied species, sea urchin Sterechinus neumayeri. Here, we determine spawning time in S. neumayeri using of appearance embryos and larvae plankton samples collected from ice with a collapsible net. Collections McMurdo Sound at three locations along Victoria Land Coast Ross Sea [Cape Hallett (72°S), Terra Nova Bay (74°S), Granite Harbour (77°S)] over eight years showed that although there were differences embryo larval abundance between locations, multiple events occurred during late October/early November December, regardless latitude, appeared unrelated moon phase. Exogenous are limited early summer: sites covered light penetration water temperature generally stable. As season on Antarctic Peninsula maritime also October–December, hypothesize an endogenous cue plays role setting gametogenesis perhaps set phytodetrital inputs summer, seasonally breeding urchins deep sea. Further research will be needed test this hypothesis populations .

Language: Английский

Citations

0