Complex sentence: This is common in sex role reversed species such as the pipefish where males have greater parental effort, therefore in these situations female sexual ornaments exist to allow the female to better compete for the male and his investment.
Split into simpler sentences: This is common in sex role reversed species such as the pipefish, where males have greater parental effort. Therefore in these situations female sexual ornaments exist to allow the female to better compete for the male and his investment.