Proceedings of the 16th International Neuroscience and Biological Psychiatry Conference (North America) "Stress and Behavior", New Orleans, USA, June 22-25, 2011

2011 ◽  
Keyword(s):  
North America ◽  
New Orleans ◽  
Biological Psychiatry ◽  
And Behavior

Life History and Behavior of the Bramble Leafhopper, Ribautiana tenerrima (H.-S.) (Homoptera: Cicadellidae)

1960 ◽  
Vol 92 (1) ◽  
pp. 10-20 ◽  
Author(s):  
J. Raine
Keyword(s):  
Life History ◽  
North America ◽  
Vancouver Island ◽  
Dry Season ◽  
Lower Fraser Valley ◽  
And Behavior ◽  
Fraser Valley

Since 1947, when the bramble leafhopper, Ribautiana tenerrima (H.-S.) (rubi Hardy, misella 13011.), was first reported in North America near Victoria, B.C., it has become a serious pest in cane fruit plantings on southern Vancouver Island and the lower Fraser Valley. Hoth nymphs and adults suck the sap from the leaves, producing a white stippling on the upper surfaces (Fig. 1). In a dry season a severe infestation causes many leaves to become curled and appear burned. The canes lack vigor and the size of the fruit is reduced. This is a report on a study of the life history and behavior of the species conducted at Victoria from 1953 to 1957.

scholarly journals Description of New American Carduelis/Spinus Bird Species in La Paz (Bolivia): C./S. lapazensis.

2020 ◽  
Vol 13 (1) ◽  
pp. 24-33
Author(s):  
Antonio Arnaiz-Villena ◽  
Valentín Ruiz-del-Valle ◽  
Fabio Suarez-Trujillo ◽  
Adrian Lopez-Nares ◽  
Alvaro Callado ◽  
...  
Keyword(s):  
New Species ◽  
North America ◽  
Bird Species ◽  
South American ◽  
Cyt B ◽  
Species Definition ◽  
La Paz ◽  
Evolutionary Radiation ◽  
And Behavior ◽  
A New Species

Introduction: South American siskins (Genus Carduelis/Spinus) are the outcome of regional evolutionary radiation from an extant (or other extinct) species: C. notata, a North America siskin, which thrives in Mexico subtropical areas and is parental of one of the three described North American siskin radiations. Methods: Speciation and/or subspeciation of this South American siskin radiation have probably occurred during Pleistocene Epoch. In the present paper, a new species/subspecies akin to C./S. atrata is described by genetic and phenotypic parameters: this new species/subspecies was previously considered a subspecies of C./S. xanthogastra, which thrives further North and is separated about 1,762 km, 1,094 miles, from this described subspecies, Carduelis/ Spinus xanthogastra stejnegeri. Results: Our genetic study using mt cyt b, phenotypic and behavior observations show that this putative C./S. xanthogastra subspecies is either a different species or a C./S. atrata subspecies; we have proposed a provisional name for this finch, C./S. lapazensis, instead of C./S. x. stejnegeri. Conclusion: Species definition is movable and controversial, and it is uncertain in South American siskins, which all show a close genetic and phenotypical relationship, which may be still immersed in speciation processes since Pleistocene Epoch.

The Creole Synthesis in the New World

2017 ◽  
Author(s):  
Christopher J. Smith
Keyword(s):  
African American ◽  
North America ◽  
New Orleans ◽  
New World ◽  
Social Contexts ◽  
George Washington ◽  
Blackface Minstrelsy ◽  
The Caribbean ◽  
British Colonies

This chapter examines the musical, cultural, and sociological elements of blackface minstrelsy's “creole synthesis” throughout the Caribbean and the British colonies of North America. It argues that the conditions for the creole synthesis were present virtually from the first encounters of Anglo-Europeans and Africans in the New World. The chapter discusses the riverine, maritime, and frontier social contexts that shaped the music of blackface's African American sources and their Anglo-Celtic imitators. In particular, it considers creole synthesis in the Caribbean and in frontiers such as New Orleans and the Ohio. It also looks at a preliminary example of iconographic analysis that reflects the riverine and maritime creole synthesis: James Henry Beard's 1846 painting Western Raftsmen. The chapter contends that blackface minstrelsy was pioneered by George Washington Dixon and Thomas Dartmouth Rice in the 1830s and codified by Joel Walker Sweeney and Daniel Decatur Emmett (and the blackface troupes they founded) in the early 1840s, and thus represents the earliest comparatively accurate and extensive observation, description, and imitation of African American performance in the New World.

scholarly journals Arenysaurus ardevoli, first paleoneuroanatomical description of a European hadrosaurid

2014 ◽  
Author(s):  
Penélope Cruzado-Caballero ◽  
Josep Fortuny ◽  
Sergio Llacer ◽  
José Ignacio JI Canudo
Keyword(s):  
North America ◽  
Inner Ear ◽  
Late Cretaceous ◽  
Cerebral Hemisphere ◽  
3D Model ◽  
General Pattern ◽  
Semicircular Canals ◽  
Major Axis ◽  
Ontogenetic Stage ◽  
And Behavior

The neuroanatomy of hadrosaurid dinosaurs is well known from North America and Asia. In Europe only a few cranial remains have been recovered with the braincase. Arenysaurus is the first European endocast for which the paleoneuroanatomy has been studied. The resulting data have enabled us to draw ontogenetic, phylogenetic and functional inferences. Arenysaurus preserves the endocast and the inner ear. This cranial material was CT-scanned, and a 3D-model was generated. The endocast morphology supports a general pattern for hadrosaurids with some characters that distinguish to a subfamily level, such as a brain cavity anteroposteriorly shorter or the angle of the major axis of the cerebral hemisphere to the horizontal in lambeosaurines. Both characters are present in the endocast of Arenysaurus. Moreover, osteological features indicate an adult ontogenetic stage while some paleoneuroanatomical features are indicative of a subadult ontogenetic stage and even a juvenile ontogenetic stage. Finally, a comparison with other hadrosaurids reveals that the low values for the angle of the dural peak may be an autapomorphy exclusive to the Parasaurolophus genus. It is hypothesized that the presence of puzzling characters that suggest different ontogenetic stages for this specimen, may reflect some degree of dwarfism in Arenysaurus. Regarding the inner ear, its structure shows differences from the ornithopod clade with respect to the height of the semicircular canals. These differences could lead to a decrease in the compensatory movements of eyes and head, with important implications for the paleobiology and behavior of hadrosaurid taxa such as Edmontosaurus, Parasaurolophus and Arenysaurus. These differences in the vestibular system could be used as a phylogenetical signal. The endocranial morphology of European hadrosaurids sheds new light on the evolution of this group and may reflect the conditions in the archipelago where these animals lived during the Late Cretaceous.

Sign in / Sign up

Export Citation Format

Share Document