Influence of moderate and severe hypoxia on the diurnal activity pattern of lesser sandeel Ammodytes tobianus
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Influence of moderate and severe hypoxia on the diurnal activity pattern of lesser sandeel Ammodytes tobianus. / Behrens, J W; Petersen, J K; Aertebjerg, G; Steffensen, J F.
In: Journal of Fish Biology, Vol. 77, No. 3, 2010, p. 538-51.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Influence of moderate and severe hypoxia on the diurnal activity pattern of lesser sandeel Ammodytes tobianus
AU - Behrens, J W
AU - Petersen, J K
AU - Aertebjerg, G
AU - Steffensen, J F
N1 - Keywords:behaviour;burying;oxygen depletion;swimming
PY - 2010
Y1 - 2010
N2 - The influence of prolonged moderate (c. 60% oxygen saturation) and severe hypoxia (c. 35% oxygen saturation) on the diurnal activity pattern of sandeel Ammodytes tobianus was examined. In moderate hypoxia, the emerging and burying rates were significantly higher compared to that in normoxia, whereas fewer fish (c. 10%) were present in the water column. In contrast, severe hypoxia resulted in twice as many or more fish being present in the water column compared to that in normoxia. The increased number of swimming fish was not just a relative change due to an effect from hypoxia treatment, but the behaviour of the fish was also changed. The summed activity (emerging plus burying events) was lower in severe hypoxia compared to normoxia except during hours of dim light. All fish were buried during night-time, regardless of treatment, with the exception of some in severe hypoxia during the first couple of hours of darkness.
AB - The influence of prolonged moderate (c. 60% oxygen saturation) and severe hypoxia (c. 35% oxygen saturation) on the diurnal activity pattern of sandeel Ammodytes tobianus was examined. In moderate hypoxia, the emerging and burying rates were significantly higher compared to that in normoxia, whereas fewer fish (c. 10%) were present in the water column. In contrast, severe hypoxia resulted in twice as many or more fish being present in the water column compared to that in normoxia. The increased number of swimming fish was not just a relative change due to an effect from hypoxia treatment, but the behaviour of the fish was also changed. The summed activity (emerging plus burying events) was lower in severe hypoxia compared to normoxia except during hours of dim light. All fish were buried during night-time, regardless of treatment, with the exception of some in severe hypoxia during the first couple of hours of darkness.
U2 - 10.1111/j.1095-8649.2010.02697.x
DO - 10.1111/j.1095-8649.2010.02697.x
M3 - Journal article
C2 - 20701639
VL - 77
SP - 538
EP - 551
JO - Journal of Fish Biology
JF - Journal of Fish Biology
SN - 0022-1112
IS - 3
ER -
ID: 21633117