The constraints of high density production of the calanoid copepod Acartia tonsa Dana

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Copepods are excellent live feed for marine fish larvae in aquaculture. Culturing copepods at high density is important to increase the total egg yield, but this is still a main challenge. To address this, we conducted experiments to test factors affecting the egg harvest potential of the well studied and aquaculture relevant calanoid Acartia tonsa. A simple model was developed to evaluate the influence of individual egg production, egg predation, crowding effects and tank design on the egg harvest. At high densities from 500 to 3500 ind L−1, there was no difference in food ingestion and egg cannibalism. However, the copepods showed lower food consumption and egg cannibalism compared to the ecologically relevant densities of 20–100 ind L−1. Model calculations demonstrate that maximum egg harvest is the result of a subtle balance between water mixing and tank depth: a shallow, non-mixed tank will allow the eggs to settle and escape cannibalism but at the same time prevent the algal food staying suspended, and full utilization of the egg production potential depends on the fine tuning of these parameters
OriginalsprogEngelsk
TidsskriftJournal of Plankton Research
Vol/bind39
Udgave nummer6
Sider (fra-til)1028–1039
Antal sider12
ISSN0142-7873
DOI
StatusUdgivet - 2017

Citer dette

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title = "The constraints of high density production of the calanoid copepod Acartia tonsa Dana",
abstract = "Copepods are excellent live feed for marine fish larvae in aquaculture. Culturing copepods at high density is important to increase the total egg yield, but this is still a main challenge. To address this, we conducted experiments to test factors affecting the egg harvest potential of the well studied and aquaculture relevant calanoid Acartia tonsa. A simple model was developed to evaluate the influence of individual egg production, egg predation, crowding effects and tank design on the egg harvest. At high densities from 500 to 3500 ind L−1, there was no difference in food ingestion and egg cannibalism. However, the copepods showed lower food consumption and egg cannibalism compared to the ecologically relevant densities of 20–100 ind L−1. Model calculations demonstrate that maximum egg harvest is the result of a subtle balance between water mixing and tank depth: a shallow, non-mixed tank will allow the eggs to settle and escape cannibalism but at the same time prevent the algal food staying suspended, and full utilization of the egg production potential depends on the fine tuning of these parameters",
author = "Thuy, {Minh Vu Thi} and Hansen, {Benni Winding} and Thomas Ki{\o}rboe",
year = "2017",
doi = "10.1093/plankt/fbx056",
language = "English",
volume = "39",
pages = "1028–1039",
journal = "Journal of Plankton Research",
issn = "0142-7873",
publisher = "Oxford University Press",
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The constraints of high density production of the calanoid copepod Acartia tonsa Dana. / Thuy, Minh Vu Thi; Hansen, Benni Winding; Kiørboe, Thomas.

I: Journal of Plankton Research, Bind 39, Nr. 6, 2017, s. 1028–1039.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - The constraints of high density production of the calanoid copepod Acartia tonsa Dana

AU - Thuy, Minh Vu Thi

AU - Hansen, Benni Winding

AU - Kiørboe, Thomas

PY - 2017

Y1 - 2017

N2 - Copepods are excellent live feed for marine fish larvae in aquaculture. Culturing copepods at high density is important to increase the total egg yield, but this is still a main challenge. To address this, we conducted experiments to test factors affecting the egg harvest potential of the well studied and aquaculture relevant calanoid Acartia tonsa. A simple model was developed to evaluate the influence of individual egg production, egg predation, crowding effects and tank design on the egg harvest. At high densities from 500 to 3500 ind L−1, there was no difference in food ingestion and egg cannibalism. However, the copepods showed lower food consumption and egg cannibalism compared to the ecologically relevant densities of 20–100 ind L−1. Model calculations demonstrate that maximum egg harvest is the result of a subtle balance between water mixing and tank depth: a shallow, non-mixed tank will allow the eggs to settle and escape cannibalism but at the same time prevent the algal food staying suspended, and full utilization of the egg production potential depends on the fine tuning of these parameters

AB - Copepods are excellent live feed for marine fish larvae in aquaculture. Culturing copepods at high density is important to increase the total egg yield, but this is still a main challenge. To address this, we conducted experiments to test factors affecting the egg harvest potential of the well studied and aquaculture relevant calanoid Acartia tonsa. A simple model was developed to evaluate the influence of individual egg production, egg predation, crowding effects and tank design on the egg harvest. At high densities from 500 to 3500 ind L−1, there was no difference in food ingestion and egg cannibalism. However, the copepods showed lower food consumption and egg cannibalism compared to the ecologically relevant densities of 20–100 ind L−1. Model calculations demonstrate that maximum egg harvest is the result of a subtle balance between water mixing and tank depth: a shallow, non-mixed tank will allow the eggs to settle and escape cannibalism but at the same time prevent the algal food staying suspended, and full utilization of the egg production potential depends on the fine tuning of these parameters

U2 - 10.1093/plankt/fbx056

DO - 10.1093/plankt/fbx056

M3 - Journal article

VL - 39

SP - 1028

EP - 1039

JO - Journal of Plankton Research

JF - Journal of Plankton Research

SN - 0142-7873

IS - 6

ER -