The phenology of three species of Sargassum (Sargassaceae, Phaeophyta) in Hawaii

Wreede, Robert E. De

doi:10.2216/i0031-8884-15-2-175.1

Cited by 97 publications

(66 citation statements)

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“…Lüning and tom Dieck (1989) have stated that some environmental factors, such as photoperiod and/or seawater temperature, trigger the algal maturation processes. It has been reported that short days and/or decreasing seawater temperature result in the onset of maturation in some Sargassum species (De Wreede, 1976;Prince & O'Neal, 1979;Glenn et al, 1990;Gillespie & Critchley, 1999;Yoshida et al, 2001). However, the present study shows that H. fusiformis began to mature in spring-summer, coincident with increasing day length and increasing seawater temperature.…”

Section: Discussioncontrasting

confidence: 61%

“…The higher seawater temperature at Nanao Island than at Dongtou Island might be responsible for the earlier fertility period in the Hizikia population of Nanao Island, possibly becaused H. fusiformis requires a specific amount of energy for reproductive maturation, as suggested by other authors (De Wreede, 1976;Deysher, 1984;Arenas -Fernández, 1998) in Sargassum spp. Lüning and tom Dieck (1989) have stated that some environmental factors, such as photoperiod and/or seawater temperature, trigger the algal maturation processes.…”

Section: Discussionmentioning

confidence: 72%

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Seasonal Pattern of Reproduction Of Hizikia Fusiformis (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China

2006

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The maturation pattern of sexual reproduction in Hizikia fusiformis (Harvey) Okamura (Sargassaceae, Phaeaophyta) was examined in 2003 at Yunao Bay, Nanao Island, Shantou, China. Maturation began in mid-April (seawater temperature 19-21 • C), reached the peak in mid-May (maturation rate ca. 70%, and seawater temperature 23.5-25 • C) and finished in lateJune (seawater temperature 27.5-30 • C). The Hizikia plants continued to gain the length from the beginning of maturation season to reach a maximum mean length of 34.8 cm in mid-May, after which the mean length was reduced drastically due to the senescence and rupture of the larger plants in size. The major portion of the mature plants belonged to the larger plants between April and May, but to the smaller ones in June. It is suggested that the plant must achieve a critical size before reproductive maturation occurred. There was a positive relationship between the number of receptacles (NR), as well as the reproductive allocation (RA), and the plant size of Hizikia population, with the recorded

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Section: Discussioncontrasting

confidence: 61%

Section: Discussionmentioning

confidence: 72%

Seasonal Pattern of Reproduction Of Hizikia Fusiformis (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China

2006

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“…A variação quantitativa de Sargassum entre os bancos analisados concorda com o referido para outras espécies do gênero (Umezaki 1974, De Wreede 1976, Paula & Oliveira Filho 1980, 1982, Trono Jr. & Lluisma 1990, Largo et al 1994) e destaca a importância da abordagem espaço-temporal, em diferentes escalas, em estudos descritivos de comunidades.…”

Section: Resultsunclassified

“…Em regiões tropicais e subtropicais, Sargassum C. Agardh (Phaeophyta, Fucales) pode formar densos bancos (De Wreede 1976, Prince & O'Neal 1979, Lüning 1990). Em algumas localidades da costa do Brasil, representa a alga mais importante em termos de abundância (Eston et al 1986, Paula & Eston 1987, Paula 1989, Eston & Bussab 1990).…”

Section: Introductionunclassified

Padrões estruturais quantitativos de bancos de Sargassum (Phaeophyta, Fucales) do litoral dos estados do Rio de Janeiro e São Paulo, Brasil

Széchy¹,

Paula²

2000

Rev. bras. Bot.

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-(Quantitative structural patterns of Sargassum beds (Phaeophyta, Fucales) of the coasts of Rio de Janeiro and São Paulo states, Brazil). This paper aimed to describe the biological structure of Sargassum beds along the coasts of Rio de Janeiro and São Paulo states. Sixteen rocky shore communities were sampled at random (50 x 50 cm quadrats) during 1991-92. These communities presented populations of distinct Sargassum species. They were chosen because they were subjected to different degrees of wave action and emersion. Seven infrageneric taxa of this genus were studied. The Sargassum dry mass varied from 37 g.m -2 to 587 g.m -2 ; the highest values were found in moderate and protected sites. The cluster analysis of these communities, considering the dry mass of 75 groups of macroalgae and macroinvertebrates, indicated three structural patterns characterized by the most abundant group of organisms: 1) Sargassum, in places not exposed to direct wave action, frequent emersion nor recent disturbances; 2) calcareous algae (Corallinaceae), mainly in exposed places, with Phragmatopoma lapidosa (tube worm) and/ or Perna perna (mussels); 3) other groups of non-calcareous algae, such as Dictyopteris delicatula, representative in intermediate situations. These patterns may be usefull to study the exploitation potentiality of Sargassum and other organisms, like mussels, in the Brazilian coast. ; os maiores valores foram encontrados em locais moderados e protegidos. A análise de agrupamento dessas comunidades, considerando a massa seca de 75 grupos de macroalgas e macroinvertebrados, indicou três padrões estruturais caracterizados pelo grupo de organismos mais abundantes: 1) Sargassum, em locais não expostos à ação direta das ondas, nem à emersão freqüente e distúrbios recentes; 2) algas calcárias (Corallinaceae), principalmente em locais expostos à ação das ondas e à emersão, juntamente com Phragmatopoma lapidosa (poliqueto tubícola) e/ou Perna perna (mexilhão); 3) outros grupos de macroalgas não calcárias, como Dictyopteris delicatula, representativos em situações intermediárias. Esses padrões poderão ser úteis para a avaliação do potencial de explotação de Sargassum no litoral brasileiro, bem como de outros organismos como mexilhões.

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“…year-round fertility in tropical regions, bi-annual reproduction events peaking in spring and autumn in warm temperate regions, and reproduction restricted to summer to early autumn in cold temperate and polar regions (reviewed by Hoffmann 1987). However, there are also exceptions, such as seasonal fertility in the tropics being related to periods of lower water temperature (De Wreede 1976, Hoyle 1978, Engelen et al 2005) and the late autumn/winter onset of sporogenesis in Arctic endemic Laminaria solidungula related to high ambient nutrient concentrations (Roleda 2016).…”

Section: Environmental Control Of Fertility General Patternsmentioning

confidence: 99%

Seaweed reproductive biology: environmental and genetic controls

et al. 2017

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Knowledge of life cycle progression and reproduction of seaweeds transcends pure academic interest. Successful and sustainable seaweed exploitation and domestication will indeed require excellent control of the factors controlling growth and reproduction. The relative dominance of the ploidy-phases and their respective morphologies, however, display tremendous diversity. Consequently, the ecological and endogenous factors controlling life cycles are likely to be equally varied. A vast number of research papers addressing theoretical, ecological and physiological aspects of reproduction have been published over the years. Here, we review the current knowledge on reproductive strategies, trade-offs of reproductive effort in natural populations, and the environmental and endogenous factors controlling reproduction. Given that the majority of ecophysiological studies predate the "-omics" era, we examine the extent to which this knowledge of reproduction has been, or can be, applied to further our knowledge of life cycle control in seaweeds.

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The phenology of three species of Sargassum (Sargassaceae, Phaeophyta) in Hawaii

Cited by 97 publications

References 0 publications

Seasonal Pattern of Reproduction Of Hizikia Fusiformis (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China

Seasonal Pattern of Reproduction Of Hizikia Fusiformis (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China

Padrões estruturais quantitativos de bancos de Sargassum (Phaeophyta, Fucales) do litoral dos estados do Rio de Janeiro e São Paulo, Brasil

Seaweed reproductive biology: environmental and genetic controls

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