The Preference for Social Affiliation Renders Fish Willing to Accept Lower O2 Levels.

Published on Jan 1, 2018in Physiological and Biochemical Zoology2.25
· DOI :10.1086/695566
Brittney G. Borowiec7
Estimated H-index: 7
Constance M. O'Connor22
Estimated H-index: 22
+ 2 AuthorsSigal Balshine39
Estimated H-index: 39
AbstractAnimals are bombarded with information about their environment and must select and interpret the relevant cues to make behavioral adjustments critical to survival. How animals integrate and balance the many signals they receive about their environment is rarely assessed. We investigated how signals from the social and physical environment interact to influence environmental preferences in the endemic Tanganyikan cichlid Neolamprologus pulcher. Specifically, we explored how fish respond to the physiological challenge of declining O2 levels in light of embedded social preferences using a modified shuttle box apparatus to test O2 preferences. In the presence of a conspecific, the average (preferred) partial pressure of oxygen (Po2) and minimum Po2 experienced were significantly lower (14.90±2.13 and 12.35±3.15 kPa, respectively) than in trials without a conspecific (17.18±2.55 and 15.62±3.09 kPa, respectively). Fish with conspecifics also spent more time in the low Po2 zone of the shuttle box and mov...
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