Body color pattern and aggressiveness related to behavioral context and light intensity in an Amazonian cichlid, Laetacara fulvipinnis Staeck & Schindler, 2007. Issue 2 (4th March 2017)

• Record Type: Journal Article
• Authors: Sarmento, Carolina Gomes; de Almeida, Evelyn Souza; Marcon, Jaydione Luiz; Carvalho, Thaís Billalba
• Is Part Of: Marine and freshwater behaviour and physiology. Volume 50:Issue 2(2017)
• Page Start: 89
• Page End: 104
• Publication Date: 2017-03-04
• Subjects: Aggressive behavior -- luminosity -- dominance -- fish; Marine animals -- Physiology -- Periodicals; Marine animals -- Behavior -- Periodicals; Freshwater animals -- Physiology -- Periodicals; Freshwater animals -- Behavior -- Periodicals; Marine biology -- Periodicals; Aquatic animals -- Periodicals; 591.77
• DOI: 10.1080/10236244.2017.1329625
• Languages: English
• ISSNs: 1023-6244

Abstract

Abstract: The aim of this study was to describe agonistic interaction and color patterns relative to social status and to evaluate the effects of light on aggressiveness in Laetacara fulvipinnis. Eight agonistic events were observed: frontal display, mouth fight, nipping, chase, parallel display, threat, undulation, and flight. Four body color patterns were related to the social context. Two light levels were also tested: groups of juveniles were maintained for 15 days under low (228 ± 38.60 lx) or high (1435.92 ± 481.40 lx) light. Color pattern a was mainly observed during escalating agonistic interactions. Other patterns were exhibited during flight, rest, and attack. High light decreased the latency to fighting; increased the frequency of threats, total attacks, and flight; and destabilized the social hierarchy. These findings indicate that light intensity increases aggressiveness, interferes with the stability of hierarchies, and may result in a stressful situation with negative effects on animal welfare.