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Symbolic effects of bureaucratic representation assume that outcomes for citizen-clients change in response to the mere presence of bureaucrats with similar backgrounds. The social-psychological mechanisms in clients that may explain these changes are barely examined, though. Based on multi-source data on male and female high school students in the Netherlands, this study empirically tests a theoretical model that links student-teacher gender congruence to students' performance in math and Dutch language through the mediating role of students' gender-stereotypical beliefs and self-perceived abilities. The empirical analyses do not support the hypotheses. For student performance in math, no effects were found, while for Dutch language, a negative gender-representation effect was found for male students. In all, the results point at divergent relations between gender congruence, self-perceived abilities and performance for male and female students across subjects. The null results in this study suggest that symbolic effects of gender representation may be affected by national context and socio-economic status which should be considered as new frontiers for future research on representative bureaucracy. [ABSTRACT FROM AUTHOR]

We present the complete mitochondrial genomes of the Critically Endangered whitespotted wedgefish, Rhynchobatus djiddensis (Forsskål, 1775), and bottlenose wedgefish, Rhynchobatus australiae (Whitley, 1939), with the R. djiddensis mitogenome documented for the first time. The genomes for R. djiddensis and R. australiae are 16,799 and 16,805 bp in length, respectively. Both comprise 13 protein-coding regions, 22 tRNA genes, two rRNA genes, and a non-coding control region. All protein-coding regions consistently start with the ATG start codon; however, the alternative start codon GTG is observed at the start of the COX1 gene. NADH2, COX2, and NADH4 have incomplete stop codons: T or TA, and tRNALeu and tRNASer, have atypical codons: UAA, UGA, GCU, and UAG. The phylogenetic analysis places R. djiddensis and R. australiae within the Rhynchobatus genus, separate from other families in the order Rhinopristiformes. We also highlight the most variable gene regions to expedite future primer design, of which NADH2 was the most variable (4.5%) when taking gene length into account. These molecular resources could promote the taxonomic resolution of the whitespotted wedgefish species complex and aid in the genetic characterization of populations of these and related species. [ABSTRACT FROM AUTHOR]

Evaluates the effects of poultry diet dilution with whole wheat and chyme viscosity on coccidial infection in broilers. Decline of Eimerina acervulina oocysts in birds with diets high in fiber; Comparison of weight gain and food intake among infected birds fed whole wheat versus ground wheat diet.