Given one conception of biological individuality (evolutionary, physiological, etc.), can a holobiont – that is the host + its symbiotic (mutualistic, commensalist and parasitic) microbiome – be simultaneously a biological individual and an ecological community? Herein, we support this possibility by arguing that the notion of biological individuality is part‐dependent. In our account, the individuality of a biological ensemble should not only be determined by the conception of biological individuality in use, but also by the biological characteristics of the part of the ensemble under investigation. In the specific case of holobionts, evaluations of their individuality should be made either host‐relative or microbe‐relative. We support the claim that biological individuality is part‐dependent by drawing upon recent empirical evidence regarding the physiology of hosts and microbes, and the recent characterization of the ‘demibiont’. Our account shows that contemporary disagreements about the individuality of the holobiont derive from an incorrect understanding of the ontology of biological individuality. We show that collaboration between philosophers and biologists can be very fruitful in attempts to solve some contemporary biological debates.

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The authors used the random response technique (RRT) to measure frequency of induced abortion in Mexico, where its practice is illegal under most circumstances. They applied RRT to a national, multistage probabilistic sample of 1,792 women ages 15 to 55. The distribution of women who reported having had an induced abortion was analyzed by sociodemographic characteristics. Bivariate and multiple logistic regression analyses were performed to identify factors associated with having had an induced abortion. Overall prevalence of induced abortion was 16.3 percent. Three factors were associated with reported induced abortion: having grown up in the city (bivariate odd ratio [OR] 2.16, multiple logistic OR 2.24), having never given birth (bivariate OR 1.60, multiple logistic OR 2.06), and having had an unwanted pregnancy (bivariate OR 2.09, multiple logistic OR 2.81). RRT produced a better estimation of induced abortion compared with other methodologies. This technique works best with urban and educated women.