Experimental transplants of the large kelp Lessonia nigrescens (Phaeophyceae) in high-energy wave exposed rocky intertidal habitats of northern Chile: Experimental, restoration and management applications

2006 ◽  
Vol 335 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Juan A. Correa ◽  
Nelson A. Lagos ◽  
Matías H. Medina ◽  
Juan C. Castilla ◽  
Mauricio Cerda ◽  
...  
Keyword(s):  
High Energy ◽  
Rocky Intertidal ◽  
Northern Chile ◽  
Lessonia Nigrescens ◽  
Intertidal Habitats

Repopulation of intertidal areas with Lessonia nigrescens in northern Chile

1995 ◽  
Vol 7 (4) ◽  
pp. 347-349 ◽  
Author(s):  
Julio A. Vásquez ◽  
Fadia Tala
Keyword(s):  
Northern Chile ◽  
Lessonia Nigrescens

scholarly journals Cryptic biodiversity and phylogeographic patterns of Seychellois Ligia isopods

2017 ◽  
Author(s):  
Carlos A Santamaria ◽  
Joanna K Bluemel ◽  
Nancy Bunbury ◽  
Melinda Curran
Keyword(s):  
Cryptic Species ◽  
Western Indian Ocean ◽  
Rocky Intertidal ◽  
Biological Traits ◽  
Cryptic Diversity ◽  
Species Complexes ◽  
Cryptic Species Complex ◽  
Cryptic Biodiversity ◽  
Intertidal Habitats

Ligia isopods are conspicuous inhabitants of rocky intertidal habitats exhibiting several biological traits that severely limit their dispersal potential. Their presence in patchy habitats and low vagility may lead to long term isolation, allopatric isolation and possible cryptic speciation. Indeed, various species of Ligia have been suggested to represent instead cryptic species complexes. Past studies; however, have largely focused in Eastern Pacific and Atlantic species of Ligia, leaving in doubt whether cryptic diversity occurs in other highly biodiverse areas. The Seychelles consists of 115 islands of different ages and geological origins spread across the western Indian Ocean. They are well known for their rich biodiversity with recent reports of cryptic species in terrestrial Seychellois organisms. Despite these studies, it is unclear whether coastal invertebrates from the Seychelles harbor any cryptic diversity. In this study, we examined patterns of genetic diversity and isolation within Ligia isopods across the Seychelles archipelago by characterizing individuals from locations across both inner and outer islands of the Seychelles using mitochondrial and nuclear markers. We report the presence of highly divergent lineages of independent origin. At Aldabra Atoll, we uncovered a lineage closely related to the Ligia vitiensis cryptic species complex. Within the inner islands of Cousine, Silhouette, and Mahé we detected the presence of two moderately divergent and geographically disjunct lineages most closely related to Ligia dentipes. Our findings suggest that the Seychelles may harbor at least three novel species of Ligia in need of description and that these species may have originated independently.

Spore dispersal in the intertidal kelp Lessonia spicata: macrochallenges for the harvested Lessonia species complex at microscales of space and time

2016 ◽  
Vol 59 (4) ◽  
pp. 283-289
Author(s):  
Gloria M. Parada ◽  
Florence Tellier ◽  
Enrique A. Martínez
Keyword(s):  
Species Complex ◽  
Water Movement ◽  
Southern Oscillation ◽  
Spatial Scales ◽  
High Energy ◽  
Limiting Factors ◽  
Spore Dispersal ◽  
Speciation Event ◽  
Spore Attachment ◽  
Intertidal Habitats

Abstract The intertidal coast of Chile has two cryptic kelp species, Lessonia spicata and L. berteroana, which share closely situated, but not overlapping, high-energy habitats. Their populations recover slowly after major disturbances and massive mortalities, suggesting that dispersal from remnant populations is strongly limited. This low dispersal is also a factor that probably favours the speciation process. Understanding the limiting factors for spore dispersal is crucial. Here we evaluated 1. spore dispersal and spore dilution over distance, 2. if submersion in calm waters for a specific period of time is needed for the settlement of spores before exposure to water movement, and 3. duration of spore attachment ability. Results were consistent with the hypothesis of low-distance dispersal of spores: stained-spore dilution was high at short spatial scales (<4 m); spores settled quickly (1–2 min) even under constant water movement, but they lost the ability to attach rapidly (≤16 h). Water motion did not affect spore attachment to the substratum, a fact probably resulting from an adaptation to high energy intertidal habitats. The very low dispersal range of the spores may explain the strong genetic differentiation at small spatial scales, the speciation event that occurred within the Lessonia species complex and the slow recovery of L. berteroana after massive mortalities occurring with the 1982/1983 El Niño Southern oscillation event.

scholarly journals Lessonia berteroana en Perú: Comprobación de la identidad de la especie y diversidad genética en el borde norte de distribución

2021 ◽  
Vol 55 (3) ◽  
pp. 270
Author(s):  
Karla Pérez-Araneda ◽  
Sheyla Zevallos ◽  
Natalia Arakaki ◽  
Alex Alex Gamarra ◽  
Patricia Carbajal ◽  
...  
Keyword(s):  
Northern Chile ◽  
High Demand ◽  
Brown Macroalgae ◽  
Scientific Publications ◽  
Genetic Tools ◽  
Taxonomic Review ◽  
The Status ◽  
Lessonia Nigrescens ◽  
Species Being ◽  
Lessonia Berteroana

Harvest pressure on brown macroalgae of the Lessonia genus has increased in recent years in Peru and Chile, due to the high demand from the global hydrocolloid industry. After a taxonomic review, in 2012, the intertidal species Lessonia nigrescens was segregated into two species, being L. berteroana distributed in southern Peru and northern Chile (17-30°S). Based on genetic tools we confirm the identification as L. berteroana and report its presence up to 15°23’S. It is recommended to update the status of the species into Peruvian regulations and scientific publications.

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