TY - JOUR
T1 - A morphological and life history comparison between desert populations of a sit-and-pursue antlion, in reference to a co-occurring pit-building antlion
AU - Scharf, Inon
AU - Filin, Ido
AU - Subach, Aziz
AU - Ovadia, Ofer
N1 - Funding Information:
Acknowledgements We would like to thank Matan Golan for his help in collecting and maintaining the animals and Hagai Shemesh for fruitful discussions. The research was supported by Israel Science Foundation Grants 1084/05 and 1399/05 (to O.O.). I.F. acknowledges the support of an Academy of Finland funding to the Finnish Centre of Excellence in Analysis and Dynamics Research.
PY - 2009
Y1 - 2009
N2 - Although most antlion species do not construct pits, the vast majority of studies on antlions focused on pit-building species. We report here on a transplant experiment aiming to test for morphological and life history differences between two desert populations of a sit-and-pursue antlion species, Lopezus fedtschenkoi (Neuroptera: Myrmeleontidae), originating from habitats, which mainly differ in plant cover and productivity. We raised the antlion larvae in environmental chambers simulating either hyper-arid or Mediterranean climate. We found significant differences in the morphology and life history of L. fedtschenkoi larvae between the two populations. For example, the larvae originating from the more productive habitat pupated faster and had a higher growth rate. In agreement with the temperature-size rule, antlions reached higher final mass in the colder Mediterranean climate and exhibited a higher growth rate, but there was no difference in their developmental time. Observed differences in morphology between populations as well as those triggered by climate growing conditions could be explained by differences in size allometry. We also provide a quantitative description of the allometric growth axis, based on 12 morphological traits. Comparing the responses of L. fedtschenkoi with those observed in a co-occurring pit-building antlion indicated that there were neither shape differences that are independent of size nor was there a difference in the plasticity level between the two species.
AB - Although most antlion species do not construct pits, the vast majority of studies on antlions focused on pit-building species. We report here on a transplant experiment aiming to test for morphological and life history differences between two desert populations of a sit-and-pursue antlion species, Lopezus fedtschenkoi (Neuroptera: Myrmeleontidae), originating from habitats, which mainly differ in plant cover and productivity. We raised the antlion larvae in environmental chambers simulating either hyper-arid or Mediterranean climate. We found significant differences in the morphology and life history of L. fedtschenkoi larvae between the two populations. For example, the larvae originating from the more productive habitat pupated faster and had a higher growth rate. In agreement with the temperature-size rule, antlions reached higher final mass in the colder Mediterranean climate and exhibited a higher growth rate, but there was no difference in their developmental time. Observed differences in morphology between populations as well as those triggered by climate growing conditions could be explained by differences in size allometry. We also provide a quantitative description of the allometric growth axis, based on 12 morphological traits. Comparing the responses of L. fedtschenkoi with those observed in a co-occurring pit-building antlion indicated that there were neither shape differences that are independent of size nor was there a difference in the plasticity level between the two species.
KW - Foraging mode
KW - Myrmeleontidae
KW - Reaction norm
KW - Temperature
KW - Transplant experiment
UR - http://www.scopus.com/inward/record.url?scp=70349595097&partnerID=8YFLogxK
U2 - 10.1007/s00114-009-0576-z
DO - 10.1007/s00114-009-0576-z
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AN - SCOPUS:70349595097
VL - 96
SP - 1147
EP - 1156
JO - Die Naturwissenschaften
JF - Die Naturwissenschaften
SN - 0028-1042
IS - 10
ER -