According to the study, 60 percent of marmoset fathers responded to the distress calls by searching for their sources. The results showed that 87 percent of infant marmosets born to responsive fathers were able to survive their first 30 days, compared to only 45 percent of those born to inattentive fathers. Likewise, the research team has noted that young marmosets with responsive fathers gained weight at a faster pace than their counterparts with unresponsive fathers.
The experts also observed that marmoset fathers take an active role in introducing baby marmosets to solid foods after weaning off their mother’s milk. According to the scientists, more responsive fathers appear to exert greater effort in transitioning their offspring from milk to solids. Researcher Dr. Toni Ziegler discussed that father marmosets appear to be do “food calls” to encourage the young to come over and taste the food they have. The expert noted that this relationship produced a better predictive weight gain.
“These are the fathers that are really motivated to take care of their offspring’s essential needs early on. And that shows in the step up the infants get. Meet their early, basic needs, and they’re likely to be better off. Whether that’s nature or nurture, and whether it’s something that gets passed down, those are the kind of questions we hope we’re able to work on down the road,” Dr. Ziegler has told Daily Mail online.