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Michael Schwarz

Title Summary Date ID Author(s)
Artemia Culture for Intensive Finfish and Crustacean Larviculture

In Virginia and throughout the United States, freshwater and saltwater finfish and shrimp aquaculture is expanding rapidly. During the cultivation of most marine finfish and shrimp species – as well as some freshwater species – live feeds are an essential component during the larviculture stage. During larviculture, the rotifer is the most commonly used live feed upon transition of the larvae from endogenous (internal energy reserves) to exogenous (external) feeding. Upon completion of the rotifer stage, the most commonly used live feed prior to conversion of the larva to a dry diet is Artemia.

Sep 25, 2009 600-106
Dealing with Trichodina and Trichodina-like species May 1, 2009 600-205
Getting Acquainted with Amyloodinium ocellatum May 1, 2009 600-200
Intensive Marine Finfish Larviculture

Marine finfish production is a rapidly expanding field, both in research and industrial aquaculture. A driving force behind this growth is the inherently high value placed upon marine finfish products in the marketplace. 

May 1, 2009 600-050
Overview of Good Aquaculture Practices

Aquaculture has seen rapid growth in the United States. In Virginia, aquaculture is expanding in the foodfish, baitfish, shellfish, and ornamental production sectors. Growth areas include pond production and indoor, intensive recirculating aquaculture systems (RAS). Continued expansion of aquaculture in the state, as well as across the region and country, demands attention to both environmental and economic sustainability.

Good aquaculture practices (GAqPs) are a series of considerations, procedures, and protocols designed to foster efficient and responsible aquaculture production and expansion and to help ensure final product quality, safety, and environmental sustainability. GAqPs include considerations for: site location; production system design; incoming seed stock; facility biosecurity; feeding management, procurement, and storage; production techniques to maximize fish health; harvest; and cleaning and sanitation basics to ensure final product quality and safety. This document provides an overview and general framework for GAqPs, oriented to Virginia’s growing pond and RAS aquaculture production sectors.

May 14, 2010 600-054
Pescados y Mariscos en Virginia - Inocuos y Nutritivos Jan 12, 2010 348-961S
Rotifer Production (as a First Feed Item) for Intensive Finfish Larviculture

Live feeds are an integral component in the cultivation of most marine finfish species during larval stages. The first live feed that has demonstrated acceptability for most marine species, and which can typically be raised on a commercial scale, is the rotifer Brachionous spp. While approximately two thousand species of rotifers have been identified, most culturists rely upon the marine rotifers Brachionus plicatilis (L-strain) with a size range of 200 to 360 μm and B. rotundiformis (s-strain) with a size range of 150 to 220 μm (see figure 1). Rotifers are favored due to their size, their ability to be raised in mass cultures, and the fact that their nutrient composition can be quickly improved through the use of specialized enrichment diets.

May 27, 2009 600-105
Safe and Nutritious Seafood in Virginia

Consumers enjoy eating a variety of seafood and can find many choices of fresh as well as frozen seafood in the refrigerated and freezer cases of grocery stores. Seafood tastes good, is low in saturated fat, is an excellent source of protein and omega-3 fatty acids, and helps in the prevention of heart disease. However, consumers want to feel confident that they are buying safe, high-quality seafood products. This publication provides the information you need to help ensure that the seafood you buy and consume is safe and nutritious. 

Jan 15, 2016 AREC-156P
Safe and Nutritious Seafood in Virginia May 1, 2009 348-961