Hg- and Cu-induced hepatocellular changes in the mummichog, Fundulus heteroclitus.

Hepatic neoplasms in the mummichog Fundulus heteroclitus from a creosote-contaminated site.

High prevalences of idiopathic hepatic lesions were found in mummichog, Fundulus heteroclitus, from a site in the southern branch of the Elizabeth River, VA, contaminated with polycyclic aromatic hydrocarbons. Grossly visible hepatic lesions occurred in a total of 93% of the individuals from this site and 33% of these fish had hepatocellular carcinomas. Hepatic lesions were not detected in fish...

Distribution and habitat preferences of the introduced mummichog Fundulus heteroclitus (Linnaeus) in southwestern Spain

The effects of increased snail (Nassarius obsoletus) density on the diet of the salt marsh mummichog (Fundulus heteroclitus)

Human activities have dramatically altered the global nitrogen cycle approximately doubling the rate of nitrogen input into the biosphere. Linda Deegan and her team are in the midst of conducting a long-term fertilization experiment at the Plum Island Sound estuary in order to understand how ecosystem function changes when excess nutrients (70-100 uM NO3 and 5-7 uM PO4 3) are added. They have f...

Genetic structure and mtDNA diversity of Fundulus heteroclitus populations from polycyclic aromatic hydrocarbon-contaminated sites.

Genetic structure and diversity of mummichog (Fundulus heteroclitus) populations were investigated using mitochondrial DNA (mtDNA) sequences. Forty-six haplotypes were identified among 208 mummichog from the Elizabeth and York Rivers in Virginia, USA. No evidence of decreased gene or nucleotide diversity for mummichog from polycyclic aromatic hydrocarbon (PAH)-contaminated sites was observed. H...

Genetic structure of Fundulus heteroclitus from PAH-contaminated and neighboring sites in the Elizabeth and York Rivers.

Population genetic characteristics of mummichog, Fundulus heteroclitus, from the heavily industrialized Elizabeth River and nearby York River (Virginia USA) were assessed relative to sediment PAH concentrations. Allozyme genotype frequencies for all loci were consistent with random mating expectations at each locality and age class. Fish from all sites had comparable levels of enzyme polymorphi...