Blair Sampson - Academia.edu (original) (raw)
Papers by Blair Sampson
Canadian Journal of Zoology-revue Canadienne De Zoologie, 1989
PACKER, L., . Nest architecture and brood mortality in four species of sweat bee (Hymenoptera; Ha... more PACKER, L., . Nest architecture and brood mortality in four species of sweat bee (Hymenoptera; Halictidae) from Cape Breton Island. Can. J. Zool. 67: 2864 -2870. The nest architecture of four species of the bee family Halictidae from Cape Breton Island, Nova Scotia, was studied. Augochlorella striata and Lusioglossum (Evylaeus) comugenense constructed their brood cells in a cluster surrounded by a cavity. In the case of A. striata, the cavity-forming habit increased the rate at which the soil of the brood cell cluster dried out, relative to the surrounding soil. The year of the study was unusually dry and in midsummer the moisture content of the soil was extremely low. This weather pattern seemed to result in some mortality of A. striata brood due to dehydration, and prevented foundresses from constructing brood cells. The two other species, Lusioglossum (Evylaeus) cinctipes and Lusioglossum (Dialictus) laevissimum, did not construct brood cell clusters. All four species had shallower nests than other species with similar nest architectures for which published data are available. All species except L. laevissimum nested in association with stones at the ground surface. It was shown that brood cells of nests situated close to rocks and stones were likely to experience increased temperature, presumably resulting in a faster developmental rate for immatures. This may be important in the Cape Breton environment, which is clearly marginal for social sweat bees. Both A. striata and L. comagenense exhibited very low mortality rates in developing immatures (1 and 7%, respectively). PACKER, L., SAMPSON, B., LOCKERBIE, C., et JESSOME, V. 1989. Nest architecture and brood mortality in four species of sweat bee (Hymenoptera; Halictidae) from Cape Breton Island. Can. J. Zool. 67 : 2864-2870. On trouvera ici des donntes sur l'architecture des nids de quatre espkces d9Halictidae de 1'Ple du Cap-Breton, Nouvelle-~c o s s e . Chez Augochlorella striata et Lusioglossum (Evylaeus) comugenense, les cellules larvaires sont rassemblkes en groupes et entourkes d'une cavitC. Dans le cas d'A. striata, la formation de la cavitk entrafne la dkshydratation plus rapide de la terre qui forme les cellules que du sol environnant. L'annke de 1'Ctude s'est avkrke une annke particulikrement skche et, au milieu de l'ktk, le contenu hydrique du sol Ctait extremement bas. Ces conditions semblent avoir entrain6 une certaine mortalitk par dkshydratation au sein du nid des A. striata et elles ont empechk les fondatrices de construire de nouvelles cellules larvaires. Les abeilles des deux autres espkces, Lusioglossum (Evylaeus) cinctipes et Lusioglossum (Dialictus) laevissimum, n'ont pas construit de cellules regroupkes. Les quatre espkces avaient des nids peu profonds par comparaison aux donnkes de la littCrature sur d'autres espkces B nids d'architecture semblable. Chez toutes les espkces, sauf chez L. laevissimum, les nids ktaient associCs B des pierres B la surface du sol. 1' 1 a Ct C dCmontrk que les cellules larvaires des nids situks prks de pierres ou de cailloux sont plus susceptibles d'avoir des tempkratures plus klevkes et favorisent donc le taux pe dkveloppement des larves. Ce facteur a probablement une grande importance dans un environnement comme celui de 1'Ile du Cap-Breton qui constitue un milieu plut8t marginal pour des Halictidae sociaux. Les taux de mortalitk enregistrks chez A. striata (1 %) et chez L. comugenense (7%) ktaient trks faibles.
Canadian Journal of Zoology-revue Canadienne De Zoologie, 1989
PACKER, L., JESSOME, V., . The phenology and social biology of four sweat bees in a marginal envi... more PACKER, L., JESSOME, V., . The phenology and social biology of four sweat bees in a marginal environment: Cape Breton Island. Can. J. Zool. 67: 2871 -2877. Augochlorella striata, Lasioglossum (Evylaeus) cinctipes, Lasioglossum (Evylaeus) comagenense, and Lasioglossum (Dialictus) laevissimum were studied on Cape Breton Island, Nova Scotia, throughout their flight season in 1987. The weather during the summer was unusually good, with above-average temperatures and hours of sunshine but very low rainfall. Conversely, the previous summer had been very poor for bees, with comparatively few days suitable for foraging, particularly in July. Augochlorella striata was basically solitary but some nests produced one or, at most, two workers, thereby becoming eusocial. In other localities, L. cinctipes is known to be eusocial with well-developed morphological and physiological caste differentiation. However, most foundresses observed in 1987 were extremely small, smaller than usual for workers elsewhere, and none of the more than 100 nests produced adult workers or a reproductive brood. Most foundresses were either survivors of the worker brood from the previous year or unusually small reproductive brood females produced as a result of the bad weather in 1986. Lasioglossum comagenense was solitary or semisocial with one to four females occupying a nest. Lasioglossum laevissimum exhibited significant levels of pleometrosis and an extended period of worker foraging in summer. A comparison of the productivities of these four species indicates the importance of a flexible social system in a marginal climate. PACKER, L., JESSOME, V., LOCKERBIE, C., et SAMPSON, B. 1989. The phenology and social biology of four sweat bees in a marginal environment: Cape Breton Island. Can. J. Zool. 67 : 2871 -2877. Augochlorella steata, Lasioglossum (Evylaeu!) cinctipes, L. comagenense et L. (Dialictus) laevissimum ont fait l'objet d'une Ctude dans 1'Ile du Cap-Breton, Nouvelle-Ecosse, durant toute la saison de vol en 1987. Les conditions atmosphCriques durant cet Ct C se son avCrCes exceptionnellement bonnes : la tempkrature Ctait supkrieure h la normale, il y a eu un nombre particulikrement ClevC d'heures d'ensoleillement et trks peu de pluie. En revanche, 1' CtC prCcCdent avait Ct C particulikrement mauvais pour les abeilles, et les jours propices h la recherche de nourriture avaient Ct C peu nombreux, surtout en juillet.
Planta Medica, 2009
We are excited to present a program featuring a roster of internationally recognized experts and ... more We are excited to present a program featuring a roster of internationally recognized experts and researchers in the field of botanicals. We wish to extend our thanks to our speakers for their willingness to participate in and contribute to the success of the meeting.
Planta Medica, 2009
... Rahman AU, Shama N, Irfan B, Saima J, Ilkay O, Bilge S, Choudhary M I. 2003. Anti-inflammator... more ... Rahman AU, Shama N, Irfan B, Saima J, Ilkay O, Bilge S, Choudhary M I. 2003. Anti-inflammatory isoflavonoids from the rhizomes of Iris germanica. Journal of Ethnopharmacology, 86, 177-180. Tepe B, Donmez E, Unlu M, Candan F, Daferera D, VardarUnlu G, Polissiou M ...
![Research paper thumbnail of Bioactivity of 54 Essential Oil Extracts Topically Applied to Adult Azalea Lacebugs Stephanitis pyrioides (Scott) [Tingidae:Hemiptera]: A Rapid Bio-Pesticide Discovery Program](https://attachments.academia-assets.com/48222938/thumbnails/1.jpg)
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Planta Medica, 2009
... Rahman AU, Shama N, Irfan B, Saima J, Ilkay O, Bilge S, Choudhary M I. 2003. Anti-inflammator... more ... Rahman AU, Shama N, Irfan B, Saima J, Ilkay O, Bilge S, Choudhary M I. 2003. Anti-inflammatory isoflavonoids from the rhizomes of Iris germanica. Journal of Ethnopharmacology, 86, 177-180. Tepe B, Donmez E, Unlu M, Candan F, Daferera D, VardarUnlu G, Polissiou M ...
Canadian Journal of Zoology-revue Canadienne De Zoologie, 1989
PACKER, L., . Nest architecture and brood mortality in four species of sweat bee (Hymenoptera; Ha... more PACKER, L., . Nest architecture and brood mortality in four species of sweat bee (Hymenoptera; Halictidae) from Cape Breton Island. Can. J. Zool. 67: 2864 -2870. The nest architecture of four species of the bee family Halictidae from Cape Breton Island, Nova Scotia, was studied. Augochlorella striata and Lusioglossum (Evylaeus) comugenense constructed their brood cells in a cluster surrounded by a cavity. In the case of A. striata, the cavity-forming habit increased the rate at which the soil of the brood cell cluster dried out, relative to the surrounding soil. The year of the study was unusually dry and in midsummer the moisture content of the soil was extremely low. This weather pattern seemed to result in some mortality of A. striata brood due to dehydration, and prevented foundresses from constructing brood cells. The two other species, Lusioglossum (Evylaeus) cinctipes and Lusioglossum (Dialictus) laevissimum, did not construct brood cell clusters. All four species had shallower nests than other species with similar nest architectures for which published data are available. All species except L. laevissimum nested in association with stones at the ground surface. It was shown that brood cells of nests situated close to rocks and stones were likely to experience increased temperature, presumably resulting in a faster developmental rate for immatures. This may be important in the Cape Breton environment, which is clearly marginal for social sweat bees. Both A. striata and L. comagenense exhibited very low mortality rates in developing immatures (1 and 7%, respectively). PACKER, L., SAMPSON, B., LOCKERBIE, C., et JESSOME, V. 1989. Nest architecture and brood mortality in four species of sweat bee (Hymenoptera; Halictidae) from Cape Breton Island. Can. J. Zool. 67 : 2864-2870. On trouvera ici des donntes sur l'architecture des nids de quatre espkces d9Halictidae de 1'Ple du Cap-Breton, Nouvelle-~c o s s e . Chez Augochlorella striata et Lusioglossum (Evylaeus) comugenense, les cellules larvaires sont rassemblkes en groupes et entourkes d'une cavitC. Dans le cas d'A. striata, la formation de la cavitk entrafne la dkshydratation plus rapide de la terre qui forme les cellules que du sol environnant. L'annke de 1'Ctude s'est avkrke une annke particulikrement skche et, au milieu de l'ktk, le contenu hydrique du sol Ctait extremement bas. Ces conditions semblent avoir entrain6 une certaine mortalitk par dkshydratation au sein du nid des A. striata et elles ont empechk les fondatrices de construire de nouvelles cellules larvaires. Les abeilles des deux autres espkces, Lusioglossum (Evylaeus) cinctipes et Lusioglossum (Dialictus) laevissimum, n'ont pas construit de cellules regroupkes. Les quatre espkces avaient des nids peu profonds par comparaison aux donnkes de la littCrature sur d'autres espkces B nids d'architecture semblable. Chez toutes les espkces, sauf chez L. laevissimum, les nids ktaient associCs B des pierres B la surface du sol. 1' 1 a Ct C dCmontrk que les cellules larvaires des nids situks prks de pierres ou de cailloux sont plus susceptibles d'avoir des tempkratures plus klevkes et favorisent donc le taux pe dkveloppement des larves. Ce facteur a probablement une grande importance dans un environnement comme celui de 1'Ile du Cap-Breton qui constitue un milieu plut8t marginal pour des Halictidae sociaux. Les taux de mortalitk enregistrks chez A. striata (1 %) et chez L. comugenense (7%) ktaient trks faibles.
Canadian Journal of Zoology-revue Canadienne De Zoologie, 1989
PACKER, L., JESSOME, V., . The phenology and social biology of four sweat bees in a marginal envi... more PACKER, L., JESSOME, V., . The phenology and social biology of four sweat bees in a marginal environment: Cape Breton Island. Can. J. Zool. 67: 2871 -2877. Augochlorella striata, Lasioglossum (Evylaeus) cinctipes, Lasioglossum (Evylaeus) comagenense, and Lasioglossum (Dialictus) laevissimum were studied on Cape Breton Island, Nova Scotia, throughout their flight season in 1987. The weather during the summer was unusually good, with above-average temperatures and hours of sunshine but very low rainfall. Conversely, the previous summer had been very poor for bees, with comparatively few days suitable for foraging, particularly in July. Augochlorella striata was basically solitary but some nests produced one or, at most, two workers, thereby becoming eusocial. In other localities, L. cinctipes is known to be eusocial with well-developed morphological and physiological caste differentiation. However, most foundresses observed in 1987 were extremely small, smaller than usual for workers elsewhere, and none of the more than 100 nests produced adult workers or a reproductive brood. Most foundresses were either survivors of the worker brood from the previous year or unusually small reproductive brood females produced as a result of the bad weather in 1986. Lasioglossum comagenense was solitary or semisocial with one to four females occupying a nest. Lasioglossum laevissimum exhibited significant levels of pleometrosis and an extended period of worker foraging in summer. A comparison of the productivities of these four species indicates the importance of a flexible social system in a marginal climate. PACKER, L., JESSOME, V., LOCKERBIE, C., et SAMPSON, B. 1989. The phenology and social biology of four sweat bees in a marginal environment: Cape Breton Island. Can. J. Zool. 67 : 2871 -2877. Augochlorella steata, Lasioglossum (Evylaeu!) cinctipes, L. comagenense et L. (Dialictus) laevissimum ont fait l'objet d'une Ctude dans 1'Ile du Cap-Breton, Nouvelle-Ecosse, durant toute la saison de vol en 1987. Les conditions atmosphCriques durant cet Ct C se son avCrCes exceptionnellement bonnes : la tempkrature Ctait supkrieure h la normale, il y a eu un nombre particulikrement ClevC d'heures d'ensoleillement et trks peu de pluie. En revanche, 1' CtC prCcCdent avait Ct C particulikrement mauvais pour les abeilles, et les jours propices h la recherche de nourriture avaient Ct C peu nombreux, surtout en juillet.
Planta Medica, 2009
We are excited to present a program featuring a roster of internationally recognized experts and ... more We are excited to present a program featuring a roster of internationally recognized experts and researchers in the field of botanicals. We wish to extend our thanks to our speakers for their willingness to participate in and contribute to the success of the meeting.
Planta Medica, 2009
... Rahman AU, Shama N, Irfan B, Saima J, Ilkay O, Bilge S, Choudhary M I. 2003. Anti-inflammator... more ... Rahman AU, Shama N, Irfan B, Saima J, Ilkay O, Bilge S, Choudhary M I. 2003. Anti-inflammatory isoflavonoids from the rhizomes of Iris germanica. Journal of Ethnopharmacology, 86, 177-180. Tepe B, Donmez E, Unlu M, Candan F, Daferera D, VardarUnlu G, Polissiou M ...
Planta Medica, 2009
... Rahman AU, Shama N, Irfan B, Saima J, Ilkay O, Bilge S, Choudhary M I. 2003. Anti-inflammator... more ... Rahman AU, Shama N, Irfan B, Saima J, Ilkay O, Bilge S, Choudhary M I. 2003. Anti-inflammatory isoflavonoids from the rhizomes of Iris germanica. Journal of Ethnopharmacology, 86, 177-180. Tepe B, Donmez E, Unlu M, Candan F, Daferera D, VardarUnlu G, Polissiou M ...