Investigations on Reproductive Affinities in Red Algae

Kamiya, Mitsunobu; West, John A.

doi:10.1007/978-90-481-3795-4_5

Cited by 3 publications

(2 citation statements)

References 148 publications

(139 reference statements)

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“…Moreover, six of the ten beds dominated by diploid tetrasporophytes displayed strong heterozygote excess. An uncoupling of the complex haploid-diploid life cycle and an overdominance of one of the phases (generally dominance of the diploid tetrasporophytes over the haploid gametophytes) has previously been recorded in clonal populations of red algae (Sosa et al, 1998;Guillemin et al, 2008;Kamiya and West, 2010;Krueger-Hadfield et al, 2016). In those algal populations as in other plant and animal species (Balloux et al, 2003), heterozygote excess was also detected.…”

Section: Slow Accumulation Of Genotypic Diversity In a Long-lived Clomentioning

confidence: 86%

Local Coastal Configuration Rather Than Latitudinal Gradient Shape Clonal Diversity and Genetic Structure of Phymatolithon calcareum Maerl Beds in North European Atlantic

et al. 2019

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Section: Slow Accumulation Of Genotypic Diversity In a Long-lived Clomentioning

confidence: 86%

Local Coastal Configuration Rather Than Latitudinal Gradient Shape Clonal Diversity and Genetic Structure of Phymatolithon calcareum Maerl Beds in North European Atlantic

et al. 2019

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“…In haplodiplontic red macroalgae, the quantification of cystocarps production is simple since these reproductive structures are visible with the naked eye and have hemispherical fruiting bodies which develop on the female gametophyte after fertilization (Richerd et al 1993, Kamiya andWest 2010). In A. chilense (as G. chilensis) and Gracilaria domingensis (Kützing) Sonder, the vegetative growth of female gametophytes decreases after fertilization during the development of cystocarps (Santelices and Varela 1995;Guimarães et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Reproductive effort in the domesticated red alga Agarophyton chilense: differences between farms and natural populations

Gaitán‐Espitía

Guillemin

Usandizaga³

et al. 2021

J Appl Phycol

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Macroalgal domestication and farming can induce significant ecological and biological changes in exploited species. In the red macroalga, Agarophyton chilense, marine farming is based on clonal propagation by cuttings of the largest plants. This type of mass selection by farmers can have a considerable impact on the life history characteristics of cultivated strains. In this study, we investigated the potential effect of this type of selection on the reproduction in A. chilense, comparing female gametophytes from the natural and farmed populations. Our results showed strong differences between these two types of populations. As expected, individuals were larger in the farm than in the wild population. On the other hand, the number of cystocarps per centimeters of fronds was ten times lower in the farm than in the natural population. These differences suggest that artificial selection and cultivation environment significantly modify life-history traits in this macroalga.Moreover, the positive relationship between female size and number of cystocarps per centimeters of fronds observed in Dichato point out to the possible existence of cost of reproduction in A. chilense, with bigger females allocating more resources or energy to reproductive structures in natural populations.

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