A comparison of benthic polychaete communities off the Sand Island Wastewater Outfall was undertaken to recognize organic enrichment indicator species for Hawaiian waters. Primary-treatment sewage is discharged off the south shore of O'ahu at 70 m depth. A historical data set spanning 9 yr for seven sites at 70 m and two recent studies at 20, 50, and 100 m depths were analyzed. Geochemical data...

First posted July 20, 2023 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 Quaternary marine and continental shales in the western United States are sources of selenium that can be loaded into aquatic environment through mining, agricultural, energy production processes. The mobilization fr...

Actinosporean stages including spherical pansporocysts and oval tetractinomyxon actinospores about 8 μm long were found in two unidentified spionid polychaetes in the northern Øresund, Denmark. The myxosporean stages in fish are unknown. Members of the Spionidae occur worldwide and at all depths and it is likely that they act as invertebrate hosts for several species of Myxozoa. *Corresponding ...

Background: Neuronal antibodies that show immunoreactivity across a broad range of species are important toolsfor comparative neuroanatomy. Nonetheless, the current antibody repertoire for non-model invertebrates is limited.Currently, only antibodies against the neuropeptide RFamide and the monoamine transmitter serotonin areextensively used. These antibodies label respective neuron...