| Autor: |
Srygley RB; Northern Plains Agricultural Research Laboratory , USDA-Agricultural Research Service , 1500 N. Central Avenue, Sidney, MT 59270 , USA., Lorch PD; Biological Sciences Department , Kent State University , Kent, OH 44242 , USA. |
| Jazyk: |
angličtina |
| Zdroj: |
Royal Society open science [R Soc Open Sci] 2016 May 04; Vol. 3 (5), pp. 160113. Date of Electronic Publication: 2016 May 04 (Print Publication: 2016). |
| DOI: |
10.1098/rsos.160113 |
| Abstrakt: |
Coordinated movement of animals is a spectacular phenomenon that has received much attention. Experimental studies of Mormon crickets and locust nymphs have demonstrated that collective motion can arise from cannibalism that compensates for nutritional deficiencies arising from group living. Grouping into migratory bands confers protection from predators. By radiotracking migrating, Mormon crickets released over 3 days, we found that specialized, parasitoid digger wasps (Sphecidae) respond numerically and prey heavily on aggregated Mormon crickets leading to loss of safety in numbers. Palmodes laeviventris paralysed and buried 42% of tagged females and 8% of the males on the final day of tracking. Risk of wasps and Mormon crickets hatching on the same site is high and may drive nymphal emigration. A preference to provision offspring with adult female Mormon crickets can be explained by their greater fat content and larger size compared with males, improving survival of wasps during diapause. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
