Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

The missing hump: a clarification on the reported two-humped stage in the embryonic development of the dromedary (Camelus dromedarius).

Abstract

Early anatomical studies carried out on foetuses and adult dromedaries that were kept at San Rossore, Italy, revealed the presence of an atrophic second hump anterior to the single hump present in the dromedary leading to suggestions that the dromedary and the bactrian camel were a single species and the dromedary was simply a race of bactrian. However, a recent study on dromedary foetuses and calves failed to detect such structure. Historical data and photographic evidence of the dromedary herd of San Rossore suggest that the presence of such structure was caused by the introduction of hybrid dromedaries a common beast of burden in medieval Europe.