SEASONAL ACTIVITY OF THE BIRCH SKELETONIZER, BUCCULATRIX CANADENSISELLA CHAMBERS (LEPIDOPTERA: LYONETIIDAE), IN ALBERTA

1998 ◽  
Vol 130 (5) ◽  
pp. 579-582 ◽  
Author(s):  
Scott C. Digweed

AbstractThe birch skeletonizer Bucculatrix canadensisella Chambers was univoltine in central Alberta in 1992 and 1993. Adults occurred from early June until the end of July, and larvae were present from early July on, co-occurring with larvae of the ambermarked birch leafminer, Profenusa thomsoni (Konow). Larval B. canadensisella densities were higher in 1992 than in 1993, and were higher on rural trees at George Lake than on urban ones in Edmonton.

1997 ◽  
Vol 129 (2) ◽  
pp. 319-333 ◽  
Author(s):  
Scott C. Digweed ◽  
John R. Spence ◽  
David W. Langor

AbstractThe exotic birch-leafmining sawflies Fenusa pusilla (Lepeletier), Profenusa thomsoni (Konow), and Heterarthrus nemoratus (Fallen) occurred in Alberta during 1992–1995, but only the first two were abundant. Birch-leafmining sawflies occurred at all sites surveyed in central and southern Alberta, and appeared to be expanding their ranges northward. Adult F. pusilla began emerging in mid-May (approximately 220 DD05), and there were one to three generations per year, depending on location and year. Female F. pusilla were relatively less abundant on young than on mature trees. Profenusa thomsoni began attacking trees in June (between 400 and 550 DD05), and was invariably univoltine. Both species were more abundant and were active earlier on urban trees than at a nearby rural location. The highest catches and most complete representations of seasonal activity were obtained using yellow sticky traps. Larval F. pusilla and P. thomsoni are unlikely to compete directly for leaf resources because their leafmining activities are separated spatially and temporally, but they probably compete intraspecifically.


2020 ◽  
Author(s):  
Rhiannon Comeau

A study of seasonal activity cycles in a pre-urban society, examined through the lens of an early medieval Welsh case study. It examines how these cycles shaped patterns of power and habitual activity, defining spaces and structuring lives. Its multidisciplinary, comparative analysis identifies focal zones and challenges commonly applied interpretations.


2010 ◽  
Vol 41 (No. 1) ◽  
pp. 8-13 ◽  
Author(s):  
K. Karut ◽  
C. Chu C ◽  
T.J. Henneberry ◽  
C. Kazak

The flight activities of adult sweetpotato whitefly, Bemisia tabaci, and leafhoppers were monitored by plastic cup traps at Boğalı, Taşçı, Hacıali, Doğankent and Balcalı in the Çukurova Plain, Turkey, in 2001 and 2003. Activity of B. tabaci, expressed as numbers of adults caught in traps, was low from May to early July in both years. Numbers of B. tabaci caught at Tasçı were higher than at Boğalı from 10 July and 21 August in 2001. Its numbers were also higher at Doğankent than at Hacıali and Balcalı during August of 2003. The numbers of leafhopper adults caught fluctuated greatly in both years. Numbers remained low until late June, followed by gradual increases in July and August at Boğalı and Taşçı in 2001. In contrast, numbers of adults caught were higher at Hacıali, Doğankent and Balcalı from May through July in 2003, followed by lower catches during the remainder of the season. Daily minimum temperatures in July and August were positively correlated with higher trap catches of both B. tabaci and leafhoppers.


Author(s):  
Nicholas P Piedmonte ◽  
Vanessa C Vinci ◽  
Thomas J Daniels ◽  
Bryon P Backenson ◽  
Richard C Falco

Abstract The Asian longhorned tick, Haemaphysalis longicornis Neumann, is a species native to eastern Asia that has recently been discovered in the United States. In its native range, H. longicornis transmits pathogens that cause disease in humans and livestock. It is currently unknown whether H. longicornis will act as a vector in the United States. Understanding its seasonal activity patterns will be important in identifying which times of the year represent greatest potential risk to humans and livestock should this species become a threat to animal or public health. A study site was established in Yonkers, NY near the residence associated with the first reported human bite from H. longicornis in the United States. Ticks were collected once each week from July 2018 to November 2019. Haemaphysalis longicornis larvae were most active from August to November, nymphs from April to July, and adult females from June to September. This pattern of activity suggests that H. longicornis is capable of completing a generation within a single year and matches the patterns observed in its other ranges in the northern hemisphere. The data presented here contribute to a growing database for H. longicornis phenology in the northeastern United States. Potential implications of the short life cycle for the tick’s vectorial capacity are discussed.


Copeia ◽  
1991 ◽  
Vol 1991 (2) ◽  
pp. 294 ◽  
Author(s):  
George H. Dalrymple ◽  
Todd M. Steiner ◽  
Robert J. Nodell ◽  
Frank S. Bernardino

2010 ◽  
Vol 38 (3) ◽  
pp. 217-222 ◽  
Author(s):  
Feza Can ◽  
Nihat Demirel ◽  
Erkan Isa Sağıroğlu ◽  
Teodora Toshova ◽  
Mitko Subchev

2007 ◽  
Vol 26 (8) ◽  
pp. 1205-1214 ◽  
Author(s):  
Heidi Tiimonen ◽  
Hely Häggman ◽  
Chung-Jui Tsai ◽  
Vincent Chiang ◽  
Tuija Aronen

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