Susceptibility of gametes and embryos of the eastern oyster, Crassostrea virginica, to Karenia brevis and its toxins

Toxicon : Official Journal of the International Society on Toxinology
Anne RoltonAswani K Volety

Abstract

The bivalve mollusc, Crassostrea virginica, is frequently exposed to blooms of Karenia brevis along the west coast of Florida during periods of spawning and early larval development. A continuous 4-day exposure of gametes and 2-4 cell stage embryos of C. virginica to whole-cell and culture filtrate of K. brevis at 500 and 5000 cells mL(-1), was followed by a 4-day 'recovery' period. Larval growth, percent of normal, abnormal and dead larvae, and the presence of food in the larval gut were measured throughout the exposure period. Results suggest that negative effects mainly occur during embryogenesis and early development. Damage to feeding apparatus/gut may occur during embryonic development or exposure to toxins may act as a feeding deterrent on non-toxic algae. Following 2-h in vitro exposure of gametes, differences in oocyte and sperm cell parameters were investigated using flow cytometry. The reduced sperm viability in the whole-cell 5000 cells mL(-1) treatment suggests the involvement of extracellular brevetoxins (PbTx) and perhaps other harmful, uncharacterized compounds associated with the K. brevis cell membrane. The cumulative effects of reduced sperm viability, fertilization success, embryonic and larval survival, and...Continue Reading

References

May 9, 1998·Phytochemistry·C C ParrishP Gentien
Jul 4, 2006·Toxicon : Official Journal of the International Society on Toxinology·Jay R LeveroneSandra E Shumway
May 3, 2007·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·P GentienM P Crassous
Oct 2, 2007·Toxicon : Official Journal of the International Society on Toxinology·Patricia B RothGregory J Doucette
Mar 1, 2008·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·J L FitzpatrickC M Wood
Apr 26, 2008·Harmful Algae·Larry E Brand, Angela Compton
Jun 28, 2008·Toxicon : Official Journal of the International Society on Toxinology·Steven M PlakasRichard Pierce
Jun 28, 2008·Toxicon : Official Journal of the International Society on Toxinology·Ann AbrahamRobert W Dickey
Jan 1, 1950·Biological Reviews of the Cambridge Philosophical Society·G THORSON
Oct 21, 2014·Cytometry. Part a : the Journal of the International Society for Analytical Cytology·Nelly Le GoïcPhilippe Soudant

❮ Previous
Next ❯

Citations

Jul 21, 2017·Marine Drugs·Yuri B Shmukler, Denis A Nikishin
Jan 9, 2019·Natural Product Reports·Emily R BrownJulia Kubanek
Dec 7, 2018·Developmental and Comparative Immunology·José A Fernández RobledoMichael J Metzger
Jul 1, 2018·Environment International·Alessandra GalloElisabetta Tosti
Jul 4, 2021·Marine Environmental Research·Justine CastrecHélène Hégaret
Sep 5, 2021·Environmental Science and Pollution Research International·Raquel A F NevesLuciano N Santos
Mar 8, 2020·Developmental and Comparative Immunology·Malwenn LassudriePatricia Mirella da Silva

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.