Publication Detail

Integrating American Lobster Biology into an Assessment of Organic Matter Loading to Examine the Environmental Impacts of American Lobster Impoundments in Mid-coast Maine

Michael Tlusty
34 pp.
MITSG 04-13
$4.00 DOM

Lobster impoundments are dammed
coastal embayments utilised to hold American lobsters (Homarus americanus) before shipping to market. The impacts of lobster impoundments on the environment have not been previously studied. Here,
the digestive functioning of American lobsters was examined to assess the quantity and quality (TVS, total volatile solids) of lobster faeces produced under
the temperatures and feeding regimens these
animals were subjected to during the impoundment period. Overall it was determined that quantity and
quality of faeces did not differ among the experimental
temperatures (5, 10, and 15°C), and that animals fed every 1–2 days produced greater quantity and quality of faeces than those fed every 3–18 days, or those animals fed less than every 18 days. As a first estimate of organic matter production in active lobster
impoundments, it was calculated that a typical lobster impoundment produced 0.79 ± 0.35 (average± 1 SD) g TVS m–2 day–1 during the impoundment period, equivalent to 3.11 ± 0.60% of the total weight
of lobsters stocked into the impoundment. This level of organic matter production is below the level produced by other aquaculture operations, and that at
which benthic impacts might be expected.

type: Technical reports

Parent Project

Project No.: 2001-RC-79
Title: Environmental Impacts of Lobster Pounds: Monitoring Impacts, Modeling Holding Capacity, and Assessing Policy.

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