This study explores the role of gender in the networks of co-authorship publications, the impact of articles written by two or more authors, and the influence of high-impact articles on the academic careers. We analyze Peruvian biology researchers with publications in Web of Science Core Collection and SciELO Citation Index, as well as the curricula of the authors of greatest impact publications. A significant imbalance has been found in the number of male and female researchers as well as a significant disproportion of the number of documents published. The co-authorship network formation is not affected by gender, but women have high betweenness levels less frequently, which probably affects their effect on information flow. Finally having published a high impact research is related to promotion for junior researchers, both men and women.