The taxonomy of the ant genus Odontomachus Latreille,1804 from China is discussed.A new species,Odontomachus goumang sp.nov.,is described.Odontomachus simillimus is recognized as a new record species in China.Odontoma...The taxonomy of the ant genus Odontomachus Latreille,1804 from China is discussed.A new species,Odontomachus goumang sp.nov.,is described.Odontomachus simillimus is recognized as a new record species in China.Odontomachus goumang sp.nov.can be easily distinguished with other Odontomachus species in China by the large size(HL 3.55-4.02 mm),and the distinctly convex propodeal dorsum.A key to the worker caste of Chinese species of Odontomachus is provided.展开更多
Ants show collective and individual behavioral flexibility in their response to immediate context,choosing for example between different foraging strategies.In Pachycondyla striata,workers can forage solitarily or rec...Ants show collective and individual behavioral flexibility in their response to immediate context,choosing for example between different foraging strategies.In Pachycondyla striata,workers can forage solitarily or recruit and guide nestmates to larger food sources through tandem running.Although considered more ancestral and less efficient than pheromone trail-laying,this strategy is common especially in species with small colony size.What is not known is how the decision to recruit or follow varies according to the immediate context.That is,how fine adjustments in information transfer affect immediate foraging decisions at the colony level.Here,we studied individually marked workers and evaluated their foraging decisions when food items varied in nature(protein versus carbohydrate),size,and distance from the nest at different temperatures and humidity levels.Our results show that tandem run leaders and potential followers adjust their behavior according to a combination of external factors.While 84.2%of trips were solitary,most ants(81%)performed at least 1 tandem run.However,tandem runs were more frequent for nearby resources and at higher relative humidity.Interestingly,when food items were located far away,tandem runs were more successful when heading to protein sources(75%)compared with carbohydrate sources(42%).Our results suggest that the social information transfer between leaders and followers conveys more information than previously thought,and also relies on their experience and motivation.展开更多
文摘The taxonomy of the ant genus Odontomachus Latreille,1804 from China is discussed.A new species,Odontomachus goumang sp.nov.,is described.Odontomachus simillimus is recognized as a new record species in China.Odontomachus goumang sp.nov.can be easily distinguished with other Odontomachus species in China by the large size(HL 3.55-4.02 mm),and the distinctly convex propodeal dorsum.A key to the worker caste of Chinese species of Odontomachus is provided.
基金J.P.S.,N.C.,and M.E.L.V.received funding grants from the Brazilian Science Ministry(Conselho Nacional de Desenvolvimento Cientı´fico e Tecnolo´gico,CNPq)MCTI/CNPq/Universal 14/2014,Processo 458736/2014,PQ 311790/2017-8.L.V.receives a funding grant from FYSSEN foundationThis research was supported by CAPES(Programa de Pos-Graduacao em Psicologia Experimental[PROEX]2016/1964).
文摘Ants show collective and individual behavioral flexibility in their response to immediate context,choosing for example between different foraging strategies.In Pachycondyla striata,workers can forage solitarily or recruit and guide nestmates to larger food sources through tandem running.Although considered more ancestral and less efficient than pheromone trail-laying,this strategy is common especially in species with small colony size.What is not known is how the decision to recruit or follow varies according to the immediate context.That is,how fine adjustments in information transfer affect immediate foraging decisions at the colony level.Here,we studied individually marked workers and evaluated their foraging decisions when food items varied in nature(protein versus carbohydrate),size,and distance from the nest at different temperatures and humidity levels.Our results show that tandem run leaders and potential followers adjust their behavior according to a combination of external factors.While 84.2%of trips were solitary,most ants(81%)performed at least 1 tandem run.However,tandem runs were more frequent for nearby resources and at higher relative humidity.Interestingly,when food items were located far away,tandem runs were more successful when heading to protein sources(75%)compared with carbohydrate sources(42%).Our results suggest that the social information transfer between leaders and followers conveys more information than previously thought,and also relies on their experience and motivation.
