Brief communication: Maximum ingested bite size in captive western lowland gorillas (Gorilla gorilla gorilla).

When these data were compared to those from our previous studies, we found that gorillas consumed relatively slightly smaller volumes of food compared to the trend found across primates. However, because the more frugivorous gorillas consumed relatively larger pieces of food than the large folivorous monkeys previously studied, including the gorilla data increased the slope of the linear regression between body mass and Vb in anthropoids. Thus, the addition of the largest living primate brings the anthropoid Vb trend closer to the Vb trend of the order. Notwithstanding, there is still negative allometry in anthropoid Vb , in contrast with the isometry in strepsirrhine Vb . Future research should include species with body masses between the smaller anthropoids and gorillas by studying the Vb of large papionids and the other great apes.