Dictyostelids from Mediterranean forests of the south of Europe

Romeralo, María; Lado, Carlos

doi:10.1007/s11557-006-0515-8

Cited by 14 publications

(7 citation statements)

References 18 publications

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“…Among the previous studies referenced in Swanson et al (1999), one did concern French forests but only in lowland areas (Cavender, 1969). Our sampling design allowed us to isolate a relatively small number of dictyostelid species -only five -compared to the 14 species isolated by Romeralo and Lado (2006) in Mediterranean forests and to the 30 species isolated by Landolt et al (2006) in the Great Smoky Mountains, for example. Abundance was equally low, particularly in the managed plots which yielded only an average of 16.40 clones per gram.…”

Section: Discussionmentioning

confidence: 99%

The biodiversity of dictyostelids in mountain forests: A case study in the French Alps

Paillet¹,

Satre

2010

Pedobiologia

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Forest management can seriously modify the biodiversity of forest dwelling species, but the consequences are poorly known for certain taxa, particularly soil fauna, for which few studies have been published. We compared the biodiversity of dictyostelids cellular slime moulds in a managed and an unmanaged forest in the French Alps and analysed the influence of environmental factors on species richness and abundance of dictyostelids. To our knowledge, this study is the first one undertaken in the European Alps. We must better understand the influence of various environmental factors on the biodiversity of these organisms if we want to accurately define their functional role in the soil. In our study, dictyostelids showed lower levels of diversity compared to previously published results. The mean species richness of dictyostelids was marginally higher in unmanaged than in managed forests and biodiversity indices were significantly correlated with elevation and pH. This suggests that environmental factors have a predominant effect on the biodiversity of dictyostelids and that the effect of forest management is secondary.

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Section: Discussionmentioning

confidence: 99%

The biodiversity of dictyostelids in mountain forests: A case study in the French Alps

Paillet¹,

Satre

2010

Pedobiologia

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“…P. violaceum is a cosmopolitan species, found throughout the world including the Americas [17-19], Europe [20,21], Asia [22-24], and Australia [25]. …”

Section: Methodsmentioning

confidence: 99%

“…We collected 80 clones from undisturbed areas of the Houston Arboretum and Nature Center, Houston, TX (27 clones); Brazos Bend State Park, Needville, TX (1 clone); Mountain Lake Biological Station, Mountain Lake, VA (16 clones); Linville Falls, NC (1 clone); Urbana, IL (22 clones); and Heidelberg, Germany (9 clones) (see additional file 1 for details). P. violaceum is a cosmopolitan species, found throughout the world including the Americas [ 17 - 19 ], Europe [ 20 , 21 ], Asia [ 22 - 24 ], and Australia [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

Kin discrimination and possible cryptic species in the social amoeba Polysphondylium violaceum

et al. 2011

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BackgroundThe genetic diversity of many protists is unknown. The differences that result from this diversity can be important in interactions among individuals. The social amoeba Polysphondylium violaceum, which is a member of the Dictyostelia, has a social stage where individual amoebae aggregate together to form a multicellular fruiting body with dead stalk cells and live spores. Individuals can either cooperate with amoebae from the same clone, or sort to form clonal fruiting bodies. In this study we look at genetic diversity in P. violaceum and at how this diversity impacts social behavior.ResultsThe phylogeny of the ribosomal DNA sequence (17S to 5.8S region) shows that P. violaceum is made up of at least two groups. Mating compatibility is more common between clones from the same phylogenetic group, though matings between clones from different phylogenetic groups sometimes occurred. P. violaceum clones are more likely to form clonal fruiting bodies when they are mixed with clones from a different group than when they are mixed with a clone of the same group.ConclusionBoth the phylogenetic and mating analyses suggest the possibility of cryptic species in P. violaceum. The level of divergence found within P. violaceum is comparable to the divergence between sibling species in other dictyostelids. Both major groups A/B and C/D/E/F show kin discrimination, which elevates relatedness within fruiting bodies but not to the level of clonality. The diminished cooperation in mixes between groups suggests that the level of genetic variation between individuals influences the extent of their cooperation.

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“…Hagiwara (1989) notes that this species is rare in warmer regions, but has been found in southern Europe (Romeralo & Lado 2006) and there is also a possible record in Peru (Landolt & Stephenson 1991). It is a very characteristic species, generally being recognized using a stereomicroscope.…”

Section: Dictyostelium Firmibasis H Hagiw (Sugarcane)mentioning

confidence: 99%

First records and human activity on Brazilian Atlantic Forest Dictyostelids

Lima¹

2013

Mycosphere

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Dictyostelid cellular slime moulds isolated from two natural and cultivated areas in lowland Atlantic Forest of northeastern Brazil were identified and quantified. Nine species were recognized: Dictyostelium fasciculatum, D. firmibasis, D. macrocephalum, D. aff. monochasioides, D. mucoroides, D. purpureum, Polysphondylium pallidum, P. pseudocandidum and P. violaceum, which are the first records for Brazil. The most abundant species were D. mucoroides, D. purpureum and P. pallidum. A decrease in the abundance of dictyostelids was observed in cultivated areas, indicating that this organism responds to human disturbance.

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Dictyostelids from Mediterranean forests of the south of Europe

Cited by 14 publications

References 18 publications

The biodiversity of dictyostelids in mountain forests: A case study in the French Alps

The biodiversity of dictyostelids in mountain forests: A case study in the French Alps

Kin discrimination and possible cryptic species in the social amoeba Polysphondylium violaceum

First records and human activity on Brazilian Atlantic Forest Dictyostelids

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