-The honey bee waggle dance is a cascade of behaviors used to advertise the availability of a resource, and communicate its location. Little is known, however, about the behaviors of dance follower bees that allow them to extract information from the dance. We test competing hypotheses that suggest that either follower bees must be located behind a dancer bee or to the side of a dancer bee to be able to extract information from the dance. We also test if behaviors relating to the time that a follower bee spends following a dance are important in collecting dance information. We find that the bees are equally efficient finding a resource indicated by the dance after following a dance from the side or behind a dancer bee. We also find that the number of waggle runs followed has a significant effect on the accuracy of a foraging flight.honey bee / Apis mellifera / waggle dance / dance follower behavior
Eucharitidae is the only family of insects known to specialize as parasitoids of ant brood. Eggs are laid away from the host onto or in plant tissue, and the minute first-instars (planidia) are responsible for gaining access to the host through some form of phoretic attachment to the host ant or possibly through an intermediate host such as thrips. Orasema simulatrix (Eucharitidae: Oraseminae) are shown to deposit their eggs into incisions made on leaves of Chilopsis linearis (Bignoniaceae) in association with extrafloral nectaries (EFN). Nectary condition varies from fluid-filled on the newest leaves, to wet or dry nectaries on older leaves. Filled nectaries were about one third as common as dry nectaries, but were three times as likely to have recent oviposition. Larger numbers of undeveloped eggs, or eggs with mature planidia inside, were associated with filled and wet EFN. For emerged planidia, the distribution was shifted from a concentration at filled nectaries to an even greater concentration at wet nectaries. More planidia were found in EFN (9.50 ±2.85) than outside EFN (1.00 ± 0.60). Planidia were tested for their attachment to adult and larval ants and to adult and immature thrips (potential intermediate host), but the results do not support simple attachment as a viable means for transfer and successful parasitism. Pheidole desertorum was identified as the host ant, and at night is the dominant ant in the tree canopy of C. linearis. Feeding at the EFN by the host ant, and the direct association with planidia near to or in the EFN, is interpreted as a novel means of accessing the host brood.
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