Microgeographic Genetic Structure of Morphological and Life History Traits in a Natural Population of Impatiens capensis

Eriocaulon bilobatum is an aquatic species that inhabits temporary wetlands in central Mexico. It is annual, herbaceous, emergent, with sexual and asexual reproduction, monoecious and insect pollinated. It is a rare and vulnerable species due to its endangered habitats. The objectives of this study were to determine the diversity and genetic structure of E. bilobatum and to know if there is a correlation with genetic diversity and its ecological and life history traits. Using horizontal starch-gel electrophoresis, we screened 160 individuals from four populations. E. bilobatum has a higher genetic diversity (A=2.32, Ae=1.31, P=69.65, Ho=0.134, He=0.197, HT=0.221) than species with similar ecological and life history traits, moderate levels of inbreeding (FIS = 0.312) and low genetic differentiation among populations (FST = 0.053 y GST = 0.048). Its diversity and genetic structure are determined by the mating system and life history traits, more than by inhabiting aquatic environments.

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Population genetic structure of the endemic rosewoods Dalbergia cochinchinensis and D. oliveri at a regional scale reflects the Indochinese landscape and life‐history traits

Ecology and Evolution ◽

10.1002/ece3.3626 ◽

2017 ◽

Vol 8 (1) ◽

pp. 530-545 ◽

Cited By ~ 9

Author(s):

Ida Hartvig ◽

Thea So ◽

Suchitra Changtragoon ◽

Hoa Thi Tran ◽

Somsanith Bouamanivong ◽

...

Keyword(s):

Life History ◽

Genetic Structure ◽

Population Genetic Structure ◽

Population Genetic ◽

Life History Traits ◽

Regional Scale

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Shallow seamounts represent speciation islands for circumglobal yellowtail Seriola lalandi

Scientific Reports ◽

10.1038/s41598-021-82501-z ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Sven Kerwath ◽

Rouvay Roodt-Wilding ◽

Toufiek Samaai ◽

Henning Winker ◽

Wendy West ◽

...

Keyword(s):

Life History ◽

Genetic Structure ◽

Southern Africa ◽

Life History Traits ◽

Population Connectivity ◽

Shark Species ◽

Heterogeneous Environments ◽

Genetic Structuring ◽

Yellowtail Kingfish ◽

Seriola Lalandi

AbstractPhenotypic plasticity in life-history traits in response to heterogeneous environments has been observed in a number of fishes. Conversely, genetic structure has recently been detected in even the most wide ranging pelagic teleost fish and shark species with massive dispersal potential, putting into question previous expectations of panmixia. Shallow oceanic seamounts are known aggregation sites for pelagic species, but their role in genetic structuring of widely distributed species remains poorly understood. The yellowtail kingfish (Seriola lalandi), a commercially valuable, circumglobal, epipelagic fish species occurs in two genetically distinct Southern Hemisphere populations (South Pacific and southern Africa) with low levels of gene-flow between the regions. Two shallow oceanic seamounts exist in the ocean basins around southern Africa; Vema and Walters Shoal in the Atlantic and Indian oceans, respectively. We analysed rare samples from these remote locations and from the South African continental shelf to assess genetic structure and population connectivity in S. lalandi and investigated life-history traits by comparing diet, age, growth and maturation among the three sites. The results suggest that yellowtail from South Africa and the two seamounts are genetically and phenotypically distinct. Rather than mere feeding oases, we postulate that these seamounts represent islands of breeding populations with site-specific adaptations.

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An integrated genetic approach to provenancing and establishment of founding individuals for restoration in the semiarid midwest region of Western Australia

Australian Journal of Botany ◽

10.1071/bt18096 ◽

2019 ◽

Vol 67 (3) ◽

pp. 218

Author(s):

Melissa A. Millar ◽

David J. Coates ◽

Margaret Byrne ◽

J. Dale Roberts

Keyword(s):

Life History ◽

Genetic Structure ◽

Plant Species ◽

Western Australia ◽

Life History Traits ◽

Spatial Genetic Structure ◽

Midwest Region ◽

The Impact ◽

Seed Sourcing

An increasingly important practical application of the analysis of spatial genetic structure and life history traits of plant species is to aid the design of seed sourcing scenarios that provide for long-term successful restoration. Despite this, there are few practical recommendations on how to use empirical knowledge of genetic structure and life history traits to design appropriate seed sourcing regimes and planting designs. We identified potential divergent lineages within species as an important first step in determining appropriate areas in which to source seeds. We then used a modelling approach for restoration based on patterns of genetic structure and life history traits that affect demography, dispersal and gene flow to inform the impact of number and spatial positioning of founder individuals, as well as different seed sourcing scenarios, on population growth and the initial capture and long-term maintenance of genetic diversity for restored populations. The approach is illustrated using datasets for four perennial plant species associated with the Banded Iron Formations of the semiarid midwest region of Western Australia. The approach can be tailored to any restoration site and applied to a range of species with differing patterns of genetic structure and differing life history traits.

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