The testes and seminal sacs of thirty European goldfinches and twenty-one canaries collected from specific nests at known phases of the nest cycle were histologically examined. Although no relationship between a characteristic stage of gonadal development and a specific phase of the nest cycle could be established, the histological findings suggested a relationship between the functioning of the seminal sac and the process of spermiation. The histological results are reported and a hypothetical mechanism for spermiation and sperm transport in passerine birds is described.
Reproduction is committed to supporting researchers in demonstrating the impact of their articles published in the journal.
The two types of article metrics we measure are (i) more traditional full-text views and pdf downloads, and (ii) Altmetric data, which shows the wider impact of articles in a range of non-traditional sources, such as social media.
More information is on the Reasons to publish page.
|Sept 2018 onwards||Past Year||Past 30 Days|
|Full Text Views||73||60||0|