University of Delaware

We are seeking to fill a postdoctoral position for a natural products chemist. The primary responsibility of this candidate will be to identify, isolate, and purify bioactive compounds produced by a marine bacteria. Experience in metabolomics is highly desired. The selected applicant must have a Ph.D. and significant experience in the separation, purification and structural characterization of water soluble, low-molecular weight compounds. Experience in desalting and separation and purification approaches, such as gel-permeation chromatography, ion-exchange chromatography and/or HPLC, will be essential.

The postdoctoral scientist will work at the Lewes, Delaware, campus of the University of Delaware College of Earth, Ocean, and Environment ( Salary is negotiable and includes benefits.

Applicants should send as one PDF file: (1) a cover letter with statement of research interests, (2) up to date C.V., (3) reprints of relevant publications, and (4) the contact information of three references willing to write confidential letters of recommendation to with “algicide postdoc’ in the subject line.

The University of Delaware is an equal opportunity employer and encourages applications from minority group members and women. The University’s Notice of Non-Discrimination, Equal Opportunity and Affirmative Action may be found at


Dalhousie University

Physiological response and bioenergetics of bivalves to harmful algal blooms (HABs)
(Dalhousie University, Halifax, Nova Scotia)
Postdoctoral position (1 year, renewable)
Aquaculture is the fastest-growing food sector in the world, and bivalve cultivation represents an
important economic activity in coastal areas of Canada. Cultured bivalves rely upon ingesting
and assimilating naturally occurring phytoplankton, and therefore the activity represents a lowcost,
low-impact, and environmentally acceptable form of aquaculture. Bivalves can, however,
ingest and accumulate chemical compounds from harmful algal blooms (HABs) that produce
cellular and soluble neurotoxins. Human consumption of bivalves contaminated with these toxins
results in various paralytic, amnesic or other poisoning syndromes, causing illness or even death.
The impacts of HABs on the operation of bivalve farms are profound, causing harvest closures
and economic losses. The overarching objective of this research is to acquire new knowledge on
the behavioural, physiological and bioenergetic responses of cultured blue mussels and giant
scallops to HABs. In particular, the project will focus on determining whether or not
Alexandrium tamarense, a common toxic phytoplankton species in Atlantic Canada, affects the
physiological responses of bivalves, namely respiration, feeding and assimilation rates, as well as
integrated responses, specifically growth and byssogenesis in mussels. The PDF will collaborate
with a PhD and a MSc student on specific experiments and will integrate the information
collected in the project into a bioenergetic model (Dynamic Energy Budget, DEB), with the
ultimate goal of generating a tool to predict the net impact of HABs on the farm-scale
productivity and consequently on the economic losses attributable to HABs.
Keywords: DEB, bioenergetics, bivalves, HABs
The PDF will be advised by Dr. Ramón Filgueira (Dalhousie University). This project will be
carried out in the context of a recently funded project by Environment and Climate Change
Canada led by Prof. Réjean Tremblay (Université du Québec à Rimouski, UQAR). Although this
PDF will be based at Dalhousie, the project also involves two students at UQAR, technical
support, government research scientists, international collaborators, and industry. Thus, the PDF
will work in a multidisciplinary and inter-institutional environment, providing a collaborative
and stimulating context. The highly collaborative nature of this project will ensure a broad
training and intellectual cross-fertilization of all participants. Given the involvement of multiple
organizations in this project, the PDF will have access to several laboratories in Canada, but also
in the US and Europe (France and Spain) to learn new techniques from other researchers.
If you are interested, submit a brief statement of interest and CV to:
Ramón Filgueira
Marine Affairs Program
Dalhousie University