Salinity of the growth medium is important for production potential and nutritional value of white worms (Enchytraeus albidus Henle)

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Salinity of the growth medium is important for production potential and nutritional value of white worms (Enchytraeus albidus Henle). / Holmstrup, Martin; Hovvang, Mathilde H.; Slotsbo, Stine.

In: Aquaculture Research, Vol. 51, No. 7, 07.2020, p. 2885-2892.

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@article{c5f691617b0c4cbcb466bb829fb3932d,
title = "Salinity of the growth medium is important for production potential and nutritional value of white worms (Enchytraeus albidus Henle)",
abstract = "Enchytraeus albidus is a small euryhaline earthworm that is abundant in the supralittoral zone where it can be found in decaying seaweed. This species is readily mass-cultured, and due to its relatively high contents of protein and polyunsaturated fatty acids (PUFAs), there has been a renewed interest in this species as an alternative source of valuable nutrients for fish feed. Here, we have investigated the influence of substrate salinity (0, 1, 2, 8, 15, 30 and 40 ppt) on reproduction, growth and nutrient content of worms. We found that intermediate salinities (8–15 ppt) of the substrate maximize biomass production as well as protein and PUFA contents of the worm tissue. In particular, we observed that the often used culturing of E. albidus in non-saline growth medium resulted in low reproduction and biomass production. Increasing the salinity from 0 to 15 ppt resulted in a higher proportion of unsaturated fatty acids both in storage lipid and in membrane phospholipid fractions.",
keywords = "biomass, eicosapentaenoic acid, fish feed, mass production, protein content",
author = "Martin Holmstrup and Hovvang, {Mathilde H.} and Stine Slotsbo",
year = "2020",
month = jul,
doi = "10.1111/are.14627",
language = "English",
volume = "51",
pages = "2885--2892",
journal = "Aquaculture Research",
issn = "1355-557X",
publisher = "Wiley-Blackwell Publishing Ltd.",
number = "7",

}

RIS

TY - JOUR

T1 - Salinity of the growth medium is important for production potential and nutritional value of white worms (Enchytraeus albidus Henle)

AU - Holmstrup, Martin

AU - Hovvang, Mathilde H.

AU - Slotsbo, Stine

PY - 2020/7

Y1 - 2020/7

N2 - Enchytraeus albidus is a small euryhaline earthworm that is abundant in the supralittoral zone where it can be found in decaying seaweed. This species is readily mass-cultured, and due to its relatively high contents of protein and polyunsaturated fatty acids (PUFAs), there has been a renewed interest in this species as an alternative source of valuable nutrients for fish feed. Here, we have investigated the influence of substrate salinity (0, 1, 2, 8, 15, 30 and 40 ppt) on reproduction, growth and nutrient content of worms. We found that intermediate salinities (8–15 ppt) of the substrate maximize biomass production as well as protein and PUFA contents of the worm tissue. In particular, we observed that the often used culturing of E. albidus in non-saline growth medium resulted in low reproduction and biomass production. Increasing the salinity from 0 to 15 ppt resulted in a higher proportion of unsaturated fatty acids both in storage lipid and in membrane phospholipid fractions.

AB - Enchytraeus albidus is a small euryhaline earthworm that is abundant in the supralittoral zone where it can be found in decaying seaweed. This species is readily mass-cultured, and due to its relatively high contents of protein and polyunsaturated fatty acids (PUFAs), there has been a renewed interest in this species as an alternative source of valuable nutrients for fish feed. Here, we have investigated the influence of substrate salinity (0, 1, 2, 8, 15, 30 and 40 ppt) on reproduction, growth and nutrient content of worms. We found that intermediate salinities (8–15 ppt) of the substrate maximize biomass production as well as protein and PUFA contents of the worm tissue. In particular, we observed that the often used culturing of E. albidus in non-saline growth medium resulted in low reproduction and biomass production. Increasing the salinity from 0 to 15 ppt resulted in a higher proportion of unsaturated fatty acids both in storage lipid and in membrane phospholipid fractions.

KW - biomass

KW - eicosapentaenoic acid

KW - fish feed

KW - mass production

KW - protein content

UR - http://www.scopus.com/inward/record.url?scp=85083326361&partnerID=8YFLogxK

U2 - 10.1111/are.14627

DO - 10.1111/are.14627

M3 - Journal article

AN - SCOPUS:85083326361

VL - 51

SP - 2885

EP - 2892

JO - Aquaculture Research

JF - Aquaculture Research

SN - 1355-557X

IS - 7

ER -