The development of a low cost refrigerated flow-through seawater system for at-sea estimation of post-release mortality

Ryan J. Knotek, Shaun M. Gill, David B. Rudders, John W. Mandelman, Hugues P. Benoît, James A. Sulikowski

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The post-release mortality of discarded fish can represent an additional source of mortality that is important to understand for effective marine fisheries management. To best estimate these mortality rates under near-natural conditions, a refrigerated flow-through seawater system was developed for short-term holding experiments at-sea aboard commercial fishing vessels, using accessory tanks containing heat exchanging coils cooled by an ice slurry. Ice was added to these tanks in one to two-hour intervals based on the cooling requirement. This system was capable of maintaining temperatures within one degree Celsius of target conditions for 93-96% of operation, creating an environment where post-release mortality could be evaluated without additional thermal stress.

Original languageEnglish (US)
Pages (from-to)152-157
Number of pages6
JournalFisheries Research
Volume170
DOIs
StatePublished - Oct 1 2015
Externally publishedYes

Keywords

  • Estimation of discard mortality
  • Life support
  • On-board aquaria
  • Single pass
  • Temperature regulation
  • Water quality

ASJC Scopus subject areas

  • Aquatic Science

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