Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Richard J. Deslippe"'
Publikováno v:
Southwestern Entomologist. 39:215-221
Queens of red imported fire ants, Solenopsis invicta Buren, regulate colony dynamics by inducing workers to execute sexual larvae; proteins in the venom glands might be involved. Bioassays of the expressed, isolated queen venom proteins, Sol i 2q and
Publikováno v:
Toxicon. 60:752-759
We report on two low-molecular weight proteins that are stored in the venom of queen red imported fire ants (Solenopsis invicta). Translated amino acid sequences identified one protein to have 74.8% identity with the Sol i 2w worker allergen, and the
Publikováno v:
Journal of Arid Environments. 49:711-721
We examined the abundance and distribution of Eleodes extricata (Tenebrionidae) in a semi-arid region of West Texas. During the 2-year study, climatic conditions were extreme but opposite, with 1997 being unusually wet and mild, and 1998 being unusua
Autor:
Richard J. Deslippe, Riitta Savolainen
Publikováno v:
Naturwissenschaften. 88:347-350
Here we show for the first time that the presumed facultative slave-making ant Formica subintegra does not activate outside its nest until July and August, when it raids slaves. A comparative behavioral study of seasonal and daily activities, retriev
Autor:
Yu-Jie Guo, Richard J. Deslippe
Publikováno v:
Toxicon. 38:223-232
Piperidine alkaloids compose most of the venom of the red imported fire ant, Solenopsis invicta , and we examined how six of these alkaloids varied across worker size and age. In a colony sampled intensively, the relative abundance of each alkaloid w
Autor:
Riitta Savolainen, Richard J. Deslippe
Publikováno v:
Biological Journal of the Linnean Society. 57:47-58
Autor:
Riitta Savolainen, Richard J. Deslippe
Publikováno v:
Behavioral Ecology and Sociobiology. 37:1-6
We document the variation in number of queens occurring naturally in founding, immature and mature nests of the ant Formica podzolica, and compare development of colonies and survivorship of queens in experimental nests started with 1–16 foundresse
Autor:
Richard J. Deslippe, Riitta Savolainen
Publikováno v:
Ecology. 76:375-382
In eusocial Hymenoptera, relatedness asymmetries lead to conflict between parents and offspring over sex investment; workers strive for a 3:1 female-biased ratio of sex allocation, and queens strive for a 1:1 ratio. Many studies support this genetic
Publikováno v:
Ecology. 72:1218-1224
Males of many iguanid lizard species defend territories against conspecific males. We investigated whether territoriality in male sagebrush lizards (Sceloporus graciosus) was associated with defense of mates. Studies on the sagebrush lizard in wester
Publikováno v:
Canadian Journal of Zoology. 68:2083-2089
We examined the distribution of an insectivorous iguanid lizard (Iguanidae: Urosaurus ornatus, tree lizard) in the Sonoran Desert of Arizona in 1984, 1986, and 1987. The purpose of the investigation was to examine the ecological correlates of lizard