Ecological Factors in Comparative Analysis: Effects on School Achievement in St. Lucia

1970 ◽  
Vol 14 (3) ◽  
pp. 312-321 ◽  
Author(s):  
Erwin H. Epstein
Keyword(s):  
Comparative Analysis ◽  
School Achievement ◽  
Ecological Factors

scholarly journals Macroevolutionary integration of phenotypes within and across ant worker castes

2019 ◽  
Author(s):  
Nicholas R. Friedman ◽  
Beatrice Lecroq Bennet ◽  
Georg Fischer ◽  
Eli M. Sarnat ◽  
Jen-Pan Huang ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Social Insect ◽  
Ecological Factors ◽  
Phenotypic Traits ◽  
Important Process ◽  
Head Shape ◽  
Rate Heterogeneity ◽  
Minor Worker ◽  
Phylogenetic Framework ◽  
Worker Castes

AbstractPhenotypic traits are often integrated into evolutionary modules: sets of organismal parts that evolve together. In social insect colonies the concepts of integration and modularity apply to sets of traits both within and among functionally and phenotypically differentiated castes. On macroevolutionary timescales, patterns of integration and modularity within and across castes can be clues to the selective and ecological factors shaping their evolution and diversification. We develop a set of hypotheses describing contrasting patterns of worker integration and apply this framework in a broad (246 species) comparative analysis of major and minor worker evolution in the hyperdiverse ant genusPheidole. Using geometric morphometrics in a phylogenetic framework, we inferred fast and tightly integrated evolution of mesosoma shape between major and minor workers, but slower and more independent evolution of head shape between the two worker castes. Thus,Pheidoleworkers are evolving as a mixture of intra- and inter-caste integration and rate heterogeneity. The decoupling of homologous traits across worker castes may represent an important process facilitating the rise of social complexity.

scholarly journals A comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levels

2015 ◽  
Vol 5 (6) ◽  
pp. 1235-1248 ◽  
Author(s):  
Jani Heino ◽  
Adriano S. Melo ◽  
Luis Mauricio Bini ◽  
Florian Altermatt ◽  
Salman A. Al-Shami ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Beta Diversity ◽  
Ecological Factors

School Achievement and Adult Qualifications among Adoptees: A Longitudinal Study

1998 ◽  
Vol 39 (5) ◽  
pp. 669-685 ◽  
Author(s):  
Barbara Maughan ◽  
Stephan Collishaw ◽  
Andrew Pickles
Keyword(s):  
Longitudinal Study ◽  
School Achievement

1207: Failed Pyeloplasty in Children: Comparative Analysis of Retrograde Endopyelotomy VS. Re-do Pyeloplasty

2007 ◽  
Vol 177 (4S) ◽  
pp. 398-398
Author(s):  
Luis H. Braga ◽  
Joao L. Pippi Salle ◽  
Sumit Dave ◽  
Sean Skeldon ◽  
Armando J. Lorenzo ◽  
...  
Keyword(s):  
Comparative Analysis
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