Impacts of multiple stressors on reproductive performance and gamete metabolism of the blue mussels Mytilus edulis : physiological mechanisms and ecological implications

Hui Kong

doi:10.18453/rosdok_id00005649

Hui Kong

Impacts of multiple stressors on reproductive performance and gamete metabolism of the blue mussels Mytilus edulis : physiological mechanisms and ecological implications

Universität Rostock, 13.07.2025

https://doi.org/10.18453/rosdok_id00005649

Abstract: Mussels face warming, hypoxia, and salinity shifts. In Mytilus edulis, we tested whether sperm ATP comes mainly from oxidative phosphorylation (OXPHOS) and how parental hypoxia/anoxia and seawater temperature/salinity affect sperm and fertilization. OXPHOS was the main ATP source for motility. Parental anoxia lowered mitochondrial ATP capacity and coupling; hypoxia/anoxia increased mitochondrial ROS. Heat reduced respiratory efficiency and raised ROS; salinity effects were small. Sperm mitochondria were resilient; reproduction likely limited by gametes/embryos, not sperm metabolism.

Dissertation Freier Zugang

Titel:

Impacts of multiple stressors on reproductive performance and gamete metabolism of the blue mussels Mytilus edulis: physiological mechanisms and ecological implications

Beteiligte Personen:

Hui Kong[VerfasserIn]
	1404678700
Inna Sokolova[AkademischeR BetreuerIn]
	0000-0002-2068-4302
	1173835563
	University of Rostock, Institute of Biological Sciences
Carlo Pretti[AkademischeR BetreuerIn]
	University of Pisa, Department of Veterinary Sciences

Beteiligte Körperschaften:

Universität Rostock[Grad-verleihende Institution]
	38329-6
Universität Rostock. Mathematisch-Naturwissenschaftliche Fakultät[Grad-verleihende Institution]
	2147083-2

Zusammenfassung:

Mussels face warming, hypoxia, and salinity shifts. In Mytilus edulis, we tested whether sperm ATP comes mainly from oxidative phosphorylation (OXPHOS) and how parental hypoxia/anoxia and seawater temperature/salinity affect sperm and fertilization. OXPHOS was the main ATP source for motility. Parental anoxia lowered mitochondrial ATP capacity and coupling; hypoxia/anoxia increased mitochondrial ROS. Heat reduced respiratory efficiency and raised ROS; salinity effects were small. Sperm mitochondria were resilient; reproduction likely limited by gametes/embryos, not sperm metabolism. [Englisch]

Dokumenttyp:

Dissertation

Einrichtung:

Mathematisch-Naturwissenschaftliche Fakultät

Sprache:

Englisch

Sachgruppe der DNB:

570 Biowissenschaften, Biologie

Umfang:

1 Online-Ressource (verschiedene Seitenzählungen)

Veröffentlichung /
Entstehung:

Rostock: Universität Rostock