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It's good to be queen: classically eusocial colony structure and low worker fitness in an obligately social sweat bee
Lasioglossum malachurum, a bee species common across much of Europe, is obligately eusocial across its range but exhibits clear geographic variation in demography and social behaviour. This variation… Expand
FLUCTUATIONS IN NUMBERS AND ACTIVITY OF INSHORE DEMERSAL FISHES IN SHETLAND
Prey populations, patterns of availability, and dispersion of prey can have farreaching effects on numbers and range-sizes of terrestrial Carnivora (Macdonald, 1983; Kruuk & Parish, 1982; Kruuk &… Expand
Operant investigation of mating preference in female rats.
Apparatus for Operant Measure of Sexual Behavior in Female Rats
An apparatus for the operant evaluation of sexual behavior in female rats is presented. When a female rat presses either of two levers, one of two sexually active male rats is released from a holding… Expand
Describing the spread of oak wilt using a geographic information system.
The oak wilt fungus (C. fagacearum) spreads both through root grafts to adjacent trees and via insects over longer distances. Effective control of the disease requires a better understanding of the… Expand
Detection of Annual Changes in the Numbers of Cliff-Nesting Seabirds in Orkney 1976-80
(1) This paper reports on a 5-year project set up in Mainland, Orkney, Scotland to assess annual and longer-term changes in numbers of four seabird species against a pattern of temporal variability.… Expand