Author: Claude Carl Wakeland
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 84

View

Book Description

Author: Claude Carl Wakeland
Publisher:
ISBN:
Category : Locusts
Languages : en
Pages : 77

View

Book Description

Author: Franklin Thomas Cowan
Publisher:
ISBN:
Category : Anabrus simplex
Languages : en
Pages : 24

View

Book Description

Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1052

View

Book Description

Author: John L. Capinera
Publisher: CRC Press
ISBN: 0429712693
Category : Science
Languages : en
Pages : 396

View

Book Description
Grasslands comprise the largest and most diverse set of ecosystems in the United States and are among the most extensive in the world. Characterized by scanty rainfall, these western grasslands are too dry for crop production and are used almost exclusively for grazing livestock. The grasslands on the western edge of the Great Plains, known as the

Author: John L. Capinera
Publisher: Springer Science & Business Media
ISBN: 9781402062421
Category : Science
Languages : en
Pages : 4346

View

Book Description
This text brings together fundamental information on insect taxa, morphology, ecology, behavior, physiology, and genetics. Close relatives of insects, such as spiders and mites, are included.

Author: Arthur Cleveland Bent
Publisher: BoD – Books on Demand
ISBN: 3385559936
Category : Fiction
Languages : en
Pages : 606

View

Book Description
Reprint of the original, first published in 1877.

Author: Arthur Cleveland Bent
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 384

View

Book Description

Author: Robert E. Pfadt
Publisher:
ISBN:
Category : Grasshoppers
Languages : id
Pages : 370

View

Book Description

Author: Stacy Rae Neal
Publisher:
ISBN:
Category : Anabrus simplex
Languages : en
Pages : 106

View

Book Description
Mormon crickets (Anabrus simplex) are flightless North American shield-backed katydids that exist with a broad range of phenotypic variation including coloration, body size, movement behavior, and male calling behavior. Population types of Mormon crickets are classified as band-forming, non-band-forming, or intermediate based on estimated population density and movement behavior. Despite marked differences in morphology and behavior, these population types are still considered the same species although there is some evidence suggesting that they are genetically distinct (Bailey et al 2005). Mormon cricket morphology has been systematically described in terms of allometric, or size-correlated differences in shape between populations of Mormon crickets. The patterns of relationships between morphological characters have also been examined using morphological integration to see how they have changed over evolutionary time. Twenty-three morphological features of Mormon crickets collected from five populations in 2008 were measured and compared to the geometric mean for each individual. Shape differences by sex and by population type were tested for significance using two-way ANOVA. Principal component analysis of the covariance matrices was employed for data reduction and to explore the interactions between characters among BF and NBF Mormon crickets in terms of variance explained by size and shape versus shape alone. Correlation analysis was employed to test the relationships between morphological characters and movement patterns. Seven hypotheses of differences in covariation structure, or integration, were tested by constructing correlation matrices of the morphological variables and subjecting them to matrix correlations and Mantel tests. Integration patterns were discussed in terms of shape differences in morphology, local ecological conditions, and selection pressures by population.