Abstract
Liagora viscida and L. distenta grow on small boulders in rockpools at Campiello (Asturias, north-west Spain). This coast forms the northern limit of the geographical distribution of L. distenta in the north-east Atlantic. Gametophytes of both species were only evident from June to October. From June onwards, they increased in abundance, reaching a maximum that never exceeded 15% cover. Significant correlations were found for L. viscida and L. distenla between percentage cover and both sea water temperature and photoperiod. The entire population disappeared at the end of summer, after carpospore release. Gametophytic plants of L. viscida appeared in early June and all plants examined were females bearing carposporophytes. No male thalli were observed. In L. distenla, formation of the carpogonial branch took place in mid-June. Male thalli of L. distenla were observed between mid-June and early September. Under laboratory culture conditions, both species formed carpospores that germinated into filamentous tetrasporophytes. No tetrasporangia were observed but monosporangia were frequent under different combinations of temperature and photoperiod. Monospores germinated into further filamentous sporophytes. These data, and the fact that both species reappear every year in the same sites, suggest that L. dislenla and L. viscida have a L. Jarinosa-type life history.
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.
