Abstract
Oogenesis and gonad development were studied on histological sections of the ovaries of 12 females (98‐165 mm mantle length, ML, I‐V maturity stages) of the abundant Patagonian squid Loligo gahi sampled from the south-eastern part of the Falkland shelf. Additionally, reproductive systems of 136 females (80‐300 mm ML, I‐V maturity stages) were analysed microscopically to find atretic oocytes within the gonad. It was shown that the process of the oocyte development in the gonad and number of oogenetic stages in L. gahi are similar to those described before in a number of temperate loliginid species. However, development of both yolkless and vitellogenic oocytes in L. gahi is shifted to the earlier stages of the reproductive system maturation, giving probably more time for the yolk accumulation at low metabolic rates in cold water. Oocyte resorption was observed in the majority of mature females, but the proportion of atretic oocytes is always very low (about 1% of the total number of oocytes) showing a relative unimportance of this process in the L. gahi oogenesis.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
