caa a22 4500 469098414 CHVBK 20180323133038.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF00317803 doi (NATIONALLICENCE)springer-10.1007/BF00317803 The adaptive significance of insect gall distribution: survivorship of species in xeric and mesic habitats [Elektronische Daten] [G. Fernandes, Peter Price] Summary: We studied the relationship between habitat moisture and gall-forming insect populations. Population sizes for most galling taxa were significantly larger in xeric habitats compared with mesic habitats. Our results indicate that the differential abundance of galling insects in these habitats is due primarily to differential mortality and survivorship. Mortality factors acting upon eight insect galling species (belonging to eight genera and four families) were measured on six species (five genera and five families) of host plants. Survival was significantly higher for galling populations inhabiting xeric habitats compared with mesic habitats. Parasitism was higher in mesic habitats in seven of eight habitats and fungus-induced diseases were higher in five of seven habitats. Mortality due to predation and other (unknown) factors showed no clear trends. Overall, there was a tendency towards lower mortality and consequently higher survival for populations inhabiting xeric habitats. We hypothesize that reduced mortality caused by natural enemies and endophytic fungi has contributed to the speciation and radiation of galling insects in apparently harsh environments. Springer-Verlag, 1992 Adaptations nationallicence Habitat selection nationallicence Herbivore survivorship nationallicence Insect distribution nationallicence Insect galls nationallicence Fernandes G. Department of Biological Sciences, Northern Arizona University, Box 5640, 86011, Flagstaff, AZ, USA aut Price Peter Department of Biological Sciences, Northern Arizona University, Box 5640, 86011, Flagstaff, AZ, USA aut Oecologia Springer-Verlag 90/1(1992-04-01), 14-20 0029-8549 90:1<14 1992 90 442 https://doi.org/10.1007/BF00317803 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317803 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fernandes G. Department of Biological Sciences, Northern Arizona University, Box 5640, 86011, Flagstaff, AZ, USA aut NATIONALLICENCE 700 1- Price Peter Department of Biological Sciences, Northern Arizona University, Box 5640, 86011, Flagstaff, AZ, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 90/1(1992-04-01), 14-20 0029-8549 90:1<14 1992 90 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer