Weight norms and relations for chimpanzee

Abstract

FIVE FIGURES INTRODUCTORY STATEMENTThe chimpanzee breeding colony of Yale Laboratories of PFimate Biology, maintained at Orange Park, Florida, offers increasingly favorable opportunity for such long-continuing studies as that of weight-growth. This report is a sequel to the publications of Bingham ('29) and Spence and Yerkes ('37). It includes and is based largely upon additional data. For the first time it is possible to offer provisional weight iiorms for the full-grown adult male and female chimpanzee in supplementation of our tentative growth norms. That these standards for the colony-reared ape will apply without correction to the species in the wild seems doubtful. On the whole, conditions of life and growth are much more stable and favorable in the laboratory colony than in nature.Because of the unsatisfactory status of the classification of the genus Pan, we have made no attempt to classify our data by species. Almost certainly two or three varieties, races, or species are represented. We seriously doubt that there is more than one true species.The chimpanzee population of the laboratories numbered forty-six on June 1, 1940. Heretofore weight at birth and Measurement of chimpanzee body weight during the 15-pear period of observation which is covered by this report has been the work of many hands, and our obligations therefore are numerous. We reaffirm the general acknowledgment made by Spenee and Yerkes ( '37, p. ?29), and express appreciation of the services of Superintendent W. C. Atwater and his helpers, who have carried major responsibility for the heavy task of transfer of our animals to the scales.

The analysis of ontogenetic trajectories: When a change in size or shape is not heterochrony

“…In Fig. 5, I compare human and chimpanzee growth trajectories (18,19) using the analysis presented above. The two trajectories can in fact be nearly overlapped, but to do so requires two different transformations: one corresponding to sequential hypermorphosis and the other to neoteny.…”

“…5. Growth trajectories for male humans (18) and chimpanzees (Pan) (19). The ''Transformed Pan'' curve, which closely overlaps that for humans, is derived by applying the transformations shown in Fig.…”

Review on the Physical Growth in Primates

“…Comparatively early reports on the growth patterns of the nonhuman primates came from Bingham [1], Spence and Yerkes [2] and Grether and Yerkes [3]. They reported on the body weight of chimpanzees studied at the Yale Laboratories of Primate Biology.…”

“…All of these data show the weight increment curves with two peaks as found in figure 4 for the Japanese macaques. With apes, much of the data on physical growth has been obtained from the chimpanzee (Pan troglodytes) and, as mentioned in the Introduction, the comparatively early reports on chimpanzee body weight from the Yale Laboratories of Primate Biology from Bingham [1], Spence and Yerkes [2] and Grether and Yerkes [3]. For purposes of this review, the numerical norms in Grether and Yerkes was used as a reference, and a tentative norm was illustrated, as shown in figure 5.…”

“…They reported on the body weight of chimpanzees studied at the Yale Laboratories of Primate Biology. Based on weight data, Grether and Yerkes [3] showed that the growth pattern is similar between chimpanzees and humans. Subsequently, some reports on growth in nonhuman primates, like van Wagenen and Catchpole [4], were accumulated.…”