The influence of social rank in the angelfish, Pterophyllum scalare, on locomotor and feeding activities in a novel environment.
Identifieur interne : 000476 ( Main/Exploration ); précédent : 000475; suivant : 000477The influence of social rank in the angelfish, Pterophyllum scalare, on locomotor and feeding activities in a novel environment.
Auteurs : L M G Mez-Laplaza [Espagne] ; E. MorganSource :
- Laboratory animals [ 0023-6772 ] ; 2003.
English descriptors
- KwdEn :
- MESH :
- physiology : Behavior, Animal, Perciformes, Swimming.
- psychology : Feeding Behavior, Swimming.
- Animals, Exploratory Behavior, Social Dominance, Social Environment.
Abstract
To investigate differences in behaviour associated with social rank and environmental conditions, a comparison was made between swimming and feeding activities of dominant and subordinate angelfish, housed in groups of six, with those of angelfish housed singly in identical laboratory aquaria. Subordinate individuals were less active, less ready to feed and consumed less food items than dominants, but their feeding and activity levels were still greater than those displayed by isolated fish used as controls. When fish from each of the above categories were transferred to a novel, identical tank to be tested individually for a 6-day period, little change was observed in previously isolated fish. In contrast, the previous social experience had a marked influence on the behaviour of the other individuals, the effects being related to the social status. The strongest initial response to the new environment was shown by subordinate individuals, with a significant increase in swimming and a significant decrease in feeding compared to the group situation. Subordinates were significantly more active than dominants, who in turn moved more than previously isolated fish. Dominants and subordinates were now similarly reluctant to feed, and their food consumption was less than that of previously isolated fish. With time in the novel environment a significant reduction of swimming activity and a recovery of feeding measures were detected, but levels were still depressed in relation to the group condition, and lower in subordinates than in dominants, indicating the long-lasting effects of the previous social interactions. The results have clear implications for laboratory studies using groups of fish in which social hierarchies may be established prior to individuals being tested singly in a novel environment.
DOI: 10.1258/00236770360563741
PubMed: 12689421
Affiliations:
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Le document en format XML
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Morgan</name></author></analytic><series><title level="j">Laboratory animals</title><idno type="ISSN">0023-6772</idno><imprint><date when="2003" type="published">2003</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Behavior, Animal (physiology)</term><term>Exploratory Behavior</term><term>Feeding Behavior (psychology)</term><term>Perciformes (physiology)</term><term>Social Dominance</term><term>Social Environment</term><term>Swimming (physiology)</term><term>Swimming (psychology)</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Behavior, Animal</term><term>Perciformes</term><term>Swimming</term></keywords><keywords scheme="MESH" qualifier="psychology" xml:lang="en"><term>Feeding Behavior</term><term>Swimming</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Exploratory Behavior</term><term>Social Dominance</term><term>Social Environment</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To investigate differences in behaviour associated with social rank and environmental conditions, a comparison was made between swimming and feeding activities of dominant and subordinate angelfish, housed in groups of six, with those of angelfish housed singly in identical laboratory aquaria. Subordinate individuals were less active, less ready to feed and consumed less food items than dominants, but their feeding and activity levels were still greater than those displayed by isolated fish used as controls. When fish from each of the above categories were transferred to a novel, identical tank to be tested individually for a 6-day period, little change was observed in previously isolated fish. In contrast, the previous social experience had a marked influence on the behaviour of the other individuals, the effects being related to the social status. The strongest initial response to the new environment was shown by subordinate individuals, with a significant increase in swimming and a significant decrease in feeding compared to the group situation. Subordinates were significantly more active than dominants, who in turn moved more than previously isolated fish. Dominants and subordinates were now similarly reluctant to feed, and their food consumption was less than that of previously isolated fish. With time in the novel environment a significant reduction of swimming activity and a recovery of feeding measures were detected, but levels were still depressed in relation to the group condition, and lower in subordinates than in dominants, indicating the long-lasting effects of the previous social interactions. The results have clear implications for laboratory studies using groups of fish in which social hierarchies may be established prior to individuals being tested singly in a novel environment.</div></front></TEI><affiliations><list><country><li>Espagne</li></country></list><tree><noCountry><name sortKey="Morgan, E" sort="Morgan, E" uniqKey="Morgan E" first="E" last="Morgan">E. Morgan</name></noCountry><country name="Espagne"><noRegion><name sortKey="G Mez Laplaza, L M" sort="G Mez Laplaza, L M" uniqKey="G Mez Laplaza L" first="L M" last="G Mez-Laplaza">L M G Mez-Laplaza</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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