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. 2020 Feb 18;117(9):4802–4808. doi: 10.1073/pnas.1921446117

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Fig. 3. — Effect of social familiarization on mate-guarding behavior. (A) Although oxt^I22F/I22F males did not exhibit mate-guarding behavior toward unfamiliar WT females (dark pink), social familiarization (SF) enhanced the mate-guarding behavior of these mutant males toward familiarized mates (purple). (B) oxtr2^−/− males exhibited mate-guarding toward unfamiliar females (brown), whereas oxtr1^−/− males did not (orange). oxtr1^−/− males exhibited mate-guarding toward socially familiarized females (beige). (C) oxt^I22F/I22F males (dark pink) tended to be dominant in the dominance test using familiar females. (D) oxtr1^−/− males (orange) tended to be dominant in the dominance test using familiar females. (A–D) Mean ± SEM, n = 12 per group, Mann–Whitney U test: *P < 0.05; **P < 0.01; n.s., not significant. , female; , male.

Inline graphic — Effect of social familiarization on mate-guarding behavior. (A) Although oxt^I22F/I22F males did not exhibit mate-guarding behavior toward unfamiliar WT females (dark pink), social familiarization (SF) enhanced the mate-guarding behavior of these mutant males toward familiarized mates (purple). (B) oxtr2^−/− males exhibited mate-guarding toward unfamiliar females (brown), whereas oxtr1^−/− males did not (orange). oxtr1^−/− males exhibited mate-guarding toward socially familiarized females (beige). (C) oxt^I22F/I22F males (dark pink) tended to be dominant in the dominance test using familiar females. (D) oxtr1^−/− males (orange) tended to be dominant in the dominance test using familiar females. (A–D) Mean ± SEM, n = 12 per group, Mann–Whitney U test: *P < 0.05; **P < 0.01; n.s., not significant. , female; , male.