The Effects of Rearing Temperature on American Glass Eels (Anguilla rostrata)

Carrie J Blakeslee, Heather S Galbraith and Robert M Deems
Additional contact information
Heather S Galbraith: US Geological Survey, Leetown Science Center, USA
Robert M Deems: US Army Corps of Engineers, USA

Oceanography & Fisheries Open Access Journal, 2017, vol. 2, issue 2, 31-37

Abstract: American eels are declining throughout their range requiring a better understanding of physiological requirements of all life stages and optimal conditions for laboratory rearing and aquaculture. American glass eels (Anguilla rostrata) were housed for 3 weeks at 14, 18, 22, or 26 °C to determine optimal juvenile rearing temperature in the lab. All treatments exhibited weight gain over the course of the study except the 14 °C treatment; however, there were only marginal differences in final weight between the 18 and 14 °C treatments and no differences in length. Variation in length and weight generally increased as temperature increased with significant differences in the standard error of weight between 14 °C and the 22 and 26 °C treatments and between 18 °C and 26 °C. Mortality was significantly greater than expected by chance at 26 °C (7 deaths) and no mortality was observed at 14 °C. Body condition (Fulton’s K), conversely, was lowest in the 14 °C treatment. Considering all response variables, optimal laboratory rearing conditions were observed between 18-22 °C. Within a week of experimentation, evidence of gas bubble disease was observed and by completion noted in all treatments except at 14 °C, likely as a function of increased gas solubility at warmer temperatures. Levels of total gas pressure (103-108%) and ΔP (28-54mmHg) values may account for the gas bubbles observed.

Keywords: juniper publishers:oncology journals; oncology research journals; oncology journal articles; oncology and cancer case reports; oncology journal of clinical and experimental cancer research; open access; open access journals; Oncology International Journal; juniper publishers reivew (search for similar items in EconPapers)
Date: 2017
References: Add references at CitEc
Citations:

Downloads: (external link)
https://juniperpublishers.com/ofoaj/pdf/OFOAJ.MS.ID.555584.pdf (application/pdf)
https://juniperpublishers.com/ofoaj/OFOAJ.MS.ID.555584.php (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:adp:jofoaj:v:2:y:2017:i:2:p:31-37

DOI: 10.19080/OFOAJ.2017.02.555584

Access Statistics for this article

Oceanography & Fisheries Open Access Journal is currently edited by Sophia Mathis

More articles in Oceanography & Fisheries Open Access Journal from Juniper Publishers Inc.
Bibliographic data for series maintained by Robert Thomas ().