Gametophyte reproduction and development of Undaria pinnatifida under varied nutrient and irradiance conditions

Morelissen, Bionda; Dudley, Bruce; Geange, Shane W.; Phillips, Nicole E.

doi:10.1016/j.jembe.2013.07.009

Cited by 34 publications

(28 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Irradiance levels were measured following the sampling procedure used by Morelissen et al . (). Sponges and a small piece of attached rock were collected using a hammer and chisel.…”

Section: Methodsmentioning

confidence: 97%

Influence of environmental variation on symbiotic bacterial communities of two temperate sponges

Cárdenas

Bell

Davy

et al. 2014

FEMS Microbiol Ecol

View full text Add to dashboard Cite

Sponges are an important component of temperate subtidal marine ecosystems, with a range of important functional roles and extensive symbiotic relationships with microorganisms. However, much remains unknown about their relationships with these symbiotic microorganisms, and specifically, the role that these symbionts play in sponge physiology, feeding and adaptation to local environmental conditions. Changes in environmental factors may alter relationships between sponges and their symbionts, which could conceivably influence the abundance and distribution patterns of some temperate sponge species. Here, we analyzed the effect of transplantation of sponges between different habitats to test the effect of changes in environmental conditions on the stability of the bacterial communities in specimens of Tethya bergquistae and Ecionemia alata, based on pyrosequencing of amplified 16S rRNA genes. Bacterial communities differed markedly between the two host species. While some morphological changes were observed in transplanted sponges, transplantation had little overall effect on sponge-associated bacterial communities at either phylum or 97%-OTU level. Our results show the importance of host species and also the stability of sponge-associated bacterial communities under environmental variation.

show abstract

“…Irradiance levels were measured following the sampling procedure used by Morelissen et al . (). Sponges and a small piece of attached rock were collected using a hammer and chisel.…”

Section: Methodsmentioning

confidence: 97%

Influence of environmental variation on symbiotic bacterial communities of two temperate sponges

Cárdenas

Bell

Davy

et al. 2014

FEMS Microbiol Ecol

View full text Add to dashboard Cite

show abstract

“…However, laboratory‐based experiments have shown that zoospore attachment may occur at salinities as low as 19 psu, while gametophytes and sporophytes may survive at salinities as low as 6 psu (although below 16 psu sporophytes may start to become damaged) (Bollen et al., ; Peteiro & Sanchez, ; Saito, ). Undaria is viable over a wide range of light regimes; however, changes in irradiance and day length will influence the rate of recruitment, growth, and photosynthesis in both gametophyte and sporophyte stages (Baez et al., ; Choi et al., ; Morelissen, Dudley, Geange, & Phillips, ; Pang & Luning, ). Although seasonal and site‐specific, optimal growth occurs around 40–120 μmol m −2 s −1 , light saturation point for photosynthesis ( I k ) can be reached around 100–500 μmol m −2 s −1 , while the light compensation point ( I c ; when no net photosynthesis occurs) may be reached between 17 and <5 μmol m −2 s −1 (Campbell, Bite, & Burridge, ; Matsuyama, ; Morelissen et al., ; Saito, ; Watanabe et al., ).…”

Section: Undaria Pinnatifidamentioning

confidence: 99%

“…Undaria is viable over a wide range of light regimes; however, changes in irradiance and day length will influence the rate of recruitment, growth, and photosynthesis in both gametophyte and sporophyte stages (Baez et al., ; Choi et al., ; Morelissen, Dudley, Geange, & Phillips, ; Pang & Luning, ). Although seasonal and site‐specific, optimal growth occurs around 40–120 μmol m −2 s −1 , light saturation point for photosynthesis ( I k ) can be reached around 100–500 μmol m −2 s −1 , while the light compensation point ( I c ; when no net photosynthesis occurs) may be reached between 17 and <5 μmol m −2 s −1 (Campbell, Bite, & Burridge, ; Matsuyama, ; Morelissen et al., ; Saito, ; Watanabe et al., ). Although requiring irradiance above approximately 3 μmol m −2 s −1 for growth and maturation (Saito, ), the gametophyte is able to survive in complete darkness, in a latent phase, for at least 7 months (Kim & Nam, ); while zoospore settlement may not be affected by light regime at all (Morelissen et al., ).…”

Section: Undaria Pinnatifidamentioning

confidence: 99%

Undaria pinnatifida: A case study to highlight challenges in marine invasion ecology and management

Epstein

Smale

2017

Ecology and Evolution

View full text Add to dashboard Cite

Marine invasion ecology and management have progressed significantly over the last 30 years although many knowledge gaps and challenges remain. The kelp Undaria pinnatifida, or “Wakame,” has a global non‐native range and is considered one of the world's “worst” invasive species. Since its first recorded introduction in 1971, numerous studies have been conducted on its ecology, invasive characteristics, and impacts, yet a general consensus on the best approach to its management has not yet been reached. Here, we synthesize current understanding of this highly invasive species and adopt Undaria as a case study to highlight challenges in wider marine invasion ecology and management. Invasive species such as Undaria are likely to continue to spread and become conspicuous, prominent components of coastal marine communities. While in many cases, marine invasive species have detectable deleterious impacts on recipient communities, in many others their influence is often limited and location specific. Although not yet conclusive, Undaria may cause some ecological impact, but it does not appear to drive ecosystem change in most invaded regions. Targeted management actions have also had minimal success. Further research is needed before well‐considered, evidence‐based management decisions can be made. However, if Undaria was to become officially unmanaged in parts of its non‐native range, the presence of a highly productive, habitat former with commercial value and a broad ecological niche, could have significant economic and even environmental benefit. How science and policy reacts to the continued invasion of Undaria may influence how similar marine invasive species are handled in the future.

show abstract

“…Nutrient concentration also influences the behaviour and settlement of meiospores, the development of gametophytes and the growth rate of sporophytes (Chapman et al 1978;Amsler and Neushul 1990;Reed et al 1999;Kinlan et al 2003;Morelisen et al 2013), with higher concentrations generally favoured. To optimise sporophyte development, sufficient nutrients must be supplied to them within the kelp hatchery, without concentrations becoming inhibitory (Amsler and Neushul 1989) or encouraging the growth of fouling organisms.…”

Section: Introductionmentioning

confidence: 99%

Optimising the settlement and hatchery culture of Saccharina latissima (Phaeophyta) by manipulation of growth medium and substrate surface condition

et al. 2015

View full text Add to dashboard Cite

The phaeophyte macroalga Saccharina latissima is gaining economic importance as an aquaculture crop. To decrease costs associated with the hatchery, the time required for meiospores to develop into sporophytes ready for outplanting must be minimised and survivorship maximised. The settlement and juvenile development of S. latissima was examined in a series of experimental manipulations. It was determined that (1) Meiospore settlement should be conducted in the dark in nutrient-enriched medium.(2) Continued nutrient enrichment in the hatchery increased growth and survival of the developing sporophytes. (3) It is best to use the diatom inhibitor germanium dioxide only during settlement and the first week of light exposure, rather than continuously or not at all. This treatment leads to the highest survival rate and sporophyte length. (4) Pre-treating the settlement surface with a commercial yeast extract can increase settlement and early development size; however, over-application can be highly detrimental leading to reduced survival, size and patchy growth.

show abstract

Gametophyte reproduction and development of Undaria pinnatifida under varied nutrient and irradiance conditions

Cited by 34 publications

References 52 publications

Influence of environmental variation on symbiotic bacterial communities of two temperate sponges

Influence of environmental variation on symbiotic bacterial communities of two temperate sponges

Undaria pinnatifida: A case study to highlight challenges in marine invasion ecology and management

Optimising the settlement and hatchery culture of Saccharina latissima (Phaeophyta) by manipulation of growth medium and substrate surface condition

Contact Info

Product

Resources

About