Behaviour 2019
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SEX RATIO EFFECTS ON PAIR BOND FORMATION IN CONVICT CICHLIDS  (AMATITLANIA NIGROFASCIATA)
Isiah Newbins, Rory Van Lieu , Jennifer Gagliardi-Seeley. Metropolitan State University of Denver , Denver, Colorado, United States

Operational sex ratio has been shown to affect the formation of pair bonds (Rogers 1987). We are testing the effects of sex ratio in the socially monogamous convict cichlid. Previous research has suggested that both females and male cichlids are choosy during pair bond formation (Beeching and Hopp 1999). If sex ratio affects pair bond formation, we predict that the control with 1 male: 1 female would have fewer pair bond formations and average day would take longer to form a pair bond than the experimental groups. Furthermore, the group with 2 females and 2 males will have most and quickest pair bond formations, since it allows for both male and female mate choice. This experiment has a control (one male and one female), and 3 experimental treatment groups with different sex ratios: 1) 1 male and 2 females; 2) 1 female and 2 males; 3) 2 males and 2 females. Five observations per day will be done using a webcam to determine when a pair has formed. After a pair bond has formed, videotaping of the pair’s behaviors will be recorded for 15 minutes. The videos will then be analyzed for courtship and aggression behaviors. This experiment has just begun, and data will soon follow.