Demography and relatedness in multiple-foundress nests of the social sweat bee, Halictus ligatus

1998 ◽  
Vol 45 (1) ◽  
pp. 97-109 ◽  
Author(s):  
M.H. Richards ◽  
L. Packer
Keyword(s):  
Sweat Bee ◽  
The Social ◽  
Halictus Ligatus

Solitary behavior in a high-altitude population of the social sweat bee Halictus rubicundus (Hymenoptera: Halictidae)

1996 ◽  
Vol 38 (4) ◽  
pp. 227-233 ◽  
Author(s):  
G. C. Eickwort ◽  
J. M. Eickwort ◽  
J. Gordon ◽  
M. A. Eickwort ◽  
W. T. Wcislo
Keyword(s):  
High Altitude ◽  
Sweat Bee ◽  
The Social ◽  
Solitary Behavior

Genetic differentiation across the social transition in a socially polymorphic sweat bee, Halictus rubicundus

2010 ◽  
Vol 19 (16) ◽  
pp. 3351-3363 ◽  
Author(s):  
A. SORO ◽  
J. FIELD ◽  
C. BRIDGE ◽  
S. C. CARDINAL ◽  
R. J. PAXTON
Keyword(s):  
Genetic Differentiation ◽  
Social Transition ◽  
Sweat Bee ◽  
The Social

Colony disturbance and solitary nest initiation by workers in the obligately eusocial sweat bee, Halictus ligatus

2013 ◽  
Vol 60 (3) ◽  
pp. 389-392 ◽  
Author(s):  
S. M. Rehan ◽  
A. Rotella ◽  
T. M. Onuferko ◽  
M. H. Richards
Keyword(s):  
Sweat Bee ◽  
Halictus Ligatus ◽  
Nest Initiation

Annual variation in survival and reproduction of the primitively eusocial sweat bee Halictus ligatus (Hymenoptera: Halictidae)

1995 ◽  
Vol 73 (5) ◽  
pp. 933-941 ◽  
Author(s):  
Miriam H. Richards ◽  
Laurence Packer
Keyword(s):  
Survival Rates ◽  
Colony Development ◽  
Sweat Bee ◽  
Geographic Scale ◽  
Brood Production ◽  
Rainy Weather ◽  
Survival And Reproduction ◽  
Halictus Ligatus ◽  
Primitively Eusocial ◽  
Nest Initiation

We studied a nesting aggregation of the primitively eusocial sweat bee Halictus ligatus near Victoria in southern Ontario during the summers of 1984, 1990, and 1991. Differences in local weather patterns from year to year had marked effects on bee demography and behaviour, belying previous conclusions about "typical" social organization in this aggregation. In 1990, comparatively cool, rainy weather resulted in high nest-failure and low brood-survival rates, while in 1984 and 1991, relatively dry, warm weather had the opposite effect. In 1984 and 1990, spring nest initiation was synchronous and the emergence periods of the first (worker) and second (reproductive) broods were temporally distinct. In 1991, exceedingly warm spring weather caused asynchrony in the timing of nest initiation, accelerated brood and colony development, and continuous brood production. In 1984 and 1990, a few males were produced in the first brood but most were produced in the second brood several weeks later. In 1991, continuous brood production meant that production of males represented the transition between production of workers and of gynes (second-brood females). Patterns of demographic and social variation exhibited by H. ligatus at Victoria parallel those observed on a continent-wide geographic scale. This suggests that primitively eusocial sweat bees maintain a variety of reproductive options, adjusting their social behaviour in response to local environmental conditions.

The social organisation of Halictus ligatus (Hymenoptera; Halictidae) in southern Ontario

1986 ◽  
Vol 64 (10) ◽  
pp. 2317-2324 ◽  
Author(s):  
Laurence Packer
Keyword(s):  
Ovarian Development ◽  
Social Organisation ◽  
Southern Ontario ◽  
Activity Phase ◽  
The Social ◽  
Halictus Ligatus ◽  
Small Colony ◽  
Worker Brood ◽  
The One ◽  
Reproductive Brood

The social organisation of Halictus ligatus was studied at Victoria, southern Ontario. At this locality, the one worker brood has a protracted period of emergence; this results in small colony populations throughout the summer activity phase. Workers average 12.7% smaller than their queens, 60% of them have some ovarian development, and 42% of them mate. More males are produced towards the very end of the first brood than earlier in the spring provisioning phase. These late first brood males probably survive to mate with reproductive brood females. In orphaned nests, one worker dominates the others to become a replacement queen. Most replacement queens are mated and orphaned colonies produce reproductives of both sexes. Data from this population are compared with those of other studies of this, and other, halictine species.

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