Journal
ESTUARINE COASTAL AND SHELF SCIENCE
Volume 200, Issue -, Pages 202-211Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ecss.2017.11.007
Keywords
Viva; Reproduction; Biomass; Temperature; Nutrients; Gulf of California
Categories
Funding
- COFAA scholarship by Institute Politecnico Nacional
- EDI scholarship by Institute Politecnico Nacional
- BEIFI scholarship by Institute Politecnico Nacional
- [CONACYT-CB154415]
- [SIP2014-4069]
- [SIP2015-1427]
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Ulvacean blooms are generally characterized by one or more Ulva species, some of which are common to blooms across a broad geographic range. In tropical environments the identified stimuli that induce reproductive development of Ulva are restricted to temperature, salinity, dehydration and fragmentation. Culture studies have been prolific in describing the reproduction of Ulva species, but its reproductive changes in natural environment have not been described yet. Hence, seasonal changes were described in reproductive stages and their relationship with biomass and environmental factors of Ulva species at four macroalgal blooms in a subtropical bay. Eight Ulva species were found: U. acanthophora, U. clathrata, U. flexuosa, U. intestinalis, U. lactuca, U. lobata, U. nematoidea and U. rigida. Reproductive stage and biomass varied according to site and season. Five species showed four reproductive stages (vegetative, thallus with fully differentiated zooids in formation and empty cells after zooids release); for the remaining species only vegetative thalli were found. Ulva rigida showed the highest biomass values, followed by U. acanthophora, following a seasonal pattern. (C) 2017 Elsevier Ltd. All rights reserved.
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