Fig. 18.
| t—Tibia. p—Broadened tibia and basal tarsus. t s—Joints of Tarsus, c—Claws. |
It was discovered by Dzierzon, in 1845, that the drones hatch from unimpregnated eggs. This strange phenomenon, seemingly so incredible, is as has been shown in speaking of the queen, easily proved and beyond question. These eggs may come from an unimpregnated queen, a fertile worker—which will soon be further described—or from an impregnated queen, which may voluntarily prevent impregnation. Such eggs may be placed in the larger horizontal cells ([Fig, 28, a]), in manner already described. As stated by Bevan, the drone feeds six and a half days as a larva, before the cell is capped. The capping of the drone-cells is very convex, and projects beyond the plane of the same in worker-cells, so that the drone brood is easily distinguished from worker, and from the darker color—the wax being thicker and less pure—the capping of both drone and worker brood-cells enable us easily to distinguish them from honey-cells. In twenty-four days from the laying of the egg, the drones come forth from the cells. Of course variation of temperature, and other conditions, as variable amount of diet, may slightly retard or advance the development of any brood, in the different stages. The drones—in fact all bees—when they first emerge from the cells, are gray, soft, and appear generally unsophisticated.
Just what the longevity of the male bee is, I am unable to state. It is probable, judging from analogy, that they live till accident, the worker bees, or the performance of their natural function causes their death. The worker-bees are liable to kill off the drones, which they do by constantly biting and worrying them. They may also destroy the drone-brood. It is not very rare to see workers carrying out immature drones even in mid-summer. At the same time, too, they may destroy inchoate queens. Such action is prompted by a sudden check in the yield of honey, and with the drones is most common at the close of the season. The bees seem very cautious and far-sighted. If the signs of the times presage a famine, they stay all proceedings looking to the increase of colonies. On the other hand, unlimited honey, rapid increase of brood, crowded quarters—whatever the age of the queen—is sure to bring many of the male bees. While any circumstances that indicate a future need of drones will prevent their destruction even in late autumn.
The function of the drones is solely to impregnate the queen, though when present they may add animal heat. That their nutrition is active, is suggested by the fact, that upon dissection, we always find their capacious stomachs filled with honey.
Impregnation of the queen always takes place, as before stated, while on the wing, outside the hive, usually during the heat of warm sunshiny days. After mating, the drone organs adhere to the queen, and may be seen hanging to her for some hours. The copulatory act is fatal to the drones. By holding a drone in the hand, the ejection of the sex-organs is often produced, and always followed by immediate death. As the queen only meets a single drone, and that only once, it might be asked why nature was so improvident as to decree hundreds of drones to an apiary or colony, whereas a score would suffice as well. Nature takes cognizance of the importance of the queen, and as she goes forth amidst the myriad dangers of the outer world, it is safest and best that her stay abroad be not protracted; that the experience be not repeated, and especially, that her meeting a drone be not delayed. Hence the superabundance of drones—especially under natural conditions, isolated in forest homes, where ravenous birds are ever on the alert for insect game—is most wise and provident. Nature is never "penny wise and pound foolish." In our apiaries the need is wanting, and the condition, as it exists in nature, is not enforced.
The fact that parthenogenesis prevails in the production of the drones, has led to the theory that from a pure queen, however mated, must ever come a pure drone. My own experience and observation, which I believe are those of all apiarists, has confirmed this theory. Yet, if the impure mating of our cows, horses, and fowls, renders the females of mixed blood ever afterward, as is believed and taught by many who would seem most competent to judge—though I must say I am somewhat skeptical in the matter—then we must look closely as to our bees, for certainly, if a mammal, and especially a fowl, is tainted by impure mating, then we may expect the same of insects. In fowls such influence, if it exists, must come simply from the presence in the female generative organs of the germ-cells, or spermatozoa, and in mammals, too, there is little more than this, for though they are viviparous, so that the union and contact of the offspring and mother seems very intimate, during fœtal development, yet there is no intermingling of the blood, for a membrane ever separates that of the mother from that of the fœtus, and only the nutritious and waste elements pass from one to the other. To claim that the mother is tainted through the circulation, is like claiming that the same result would follow her inhaling the breath of her progeny after birth. I can only say, that I believe this whole matter is still involved in doubt, and still needs more careful, scientific and prolonged observation.
THE NEUTERS, OR WORKER-BEES.
These, called "the bees," by Aristotle, and even by Wildman and Bevan, are by far the most numerous individuals of the hive—there being from 15,000 to 40,000 in every good colony. It is possible for a colony to be even much more populous than this. These are also the smallest bees of the colony, as they measure but little more than one-half of an inch in length ([Fig, 19]).