Owl monkeys with one partner produced 25 percent more offspring per decade than those with two or more partners.
The reason for this significant impact on the reproductive success of the remaining partner is not yet completely clear, but the researchers surmise that it may have to do with a delay in reproduction due to the fact that female owl monkeys in Argentina typically only conceive between March and May.
The results demonstrate that, for owl monkeys, long-term monogamy and pair-bonding improves reproductive fitness.
For instance the glomerulonephritis is frequently reported in owl monkeys (Aotus sp) (Gozalo and Montoya 1990), Squirrel monkeys (Saimiri sp.
Nephritis and hemolytic anemia in owl monkeys Aotus trivirgatus.
Azara's owl monkeys
are the only primates that have actually switched their activity pattern from strict nocturnality to one that also includes regular daytime activity.
Lead researcher Jeremy Luban points out that owl monkeys
make AoT5Cyp, and that the human genome encodes the equivalent of the two components of this fusion protein, namely TRIM5 and cyclophilin A.
Chromosome Polyorphism and Banding Patterns in the Owl Monkey (Aotus).
Banding patterns of the chromosomes of two new karyotypes of the owl monkey Aotus captures in Panama.