Do the morphological and functional traits of free-living marine nematodes mirror taxonomical diversity?

Semprucci, Federica; Cesaroni, Lucia; Guidi, Loretta; Balsamo, Maria

doi:10.1016/j.marenvres.2018.02.001

Cited by 49 publications

(30 citation statements)

References 45 publications

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“…Amphidial fovea shape varied without a clear pattern across the habitats. Semprucci et al [26] have indicated some relationships between fovea shape and sediment type and hydrodynamic stress. Nematodes may be attracted or repelled by compounds released by cyanobacterial biofilms [88], but whether particular types of amphidial fovea play an adaptive role in the behavior of aquatic nematodes is yet to be tested.…”

Section: Discussionmentioning

confidence: 99%

“…The cuticle morphology has been proposed also in [26] as: smooth, punctated/annulated with or without lateral differentiation, punctated/annulated with longitudinal structures for the whole body length, wide body annules and longitudinal ridges, desmens, and covered by ectosymbiotic bacteria.…”

Section: Biological Traitsmentioning

confidence: 99%

“…Actually, most of the recent surveys on diversity patterns of nematode assemblage structure have included polar, temperate or deep-sea habitats. Comparatively less research has been done in tropical ecosystems resulting in a gap of knowledge about diversity patterns (but see studies [23,24] in Kenya, and [25,26] in the Maldives). Recently, some other understudied tropical habitats have recently been surveyed at the species level, such as volcanic sands [27], mangrove sediments [28], and rivers [29].…”

Section: Introductionmentioning

confidence: 99%

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The Influential Role of the Habitat on the Diversity Patterns of Free-Living Aquatic Nematode Assemblages in the Cuban Archipelago

et al. 2019

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Free living nematodes are the most abundant and diverse metazoans in aquatic sediments. We used a framework of habitat types to reveal quantitative patterns in species richness (SR), β-diversity, and biological traits (BT). Meiofauna was quantitatively collected from 60 sites within nine habitat types and 24,736 nematodes were identified to species level. We reported a regional richness of 410 ± 12 species for the Cuban archipelago; however, caves and deep waters need to be sampled more intensively. Relationships between SR and abundance supported the dynamic equilibrium model with habitats ordered across gradients of resource availability and physical disturbance. Seagrass meadows were the most specious and freshwater/anchihaline caves the least diverse habitats. Differences in β-diversity likely were due to habitat heterogeneity and limitations for dispersal. The assemblage composition was unique in some habitats likely reflecting the effects of habitat filtering. However, coastal habitats shared many species reflecting high connectivity and dispersal capability of nematodes due to hydrodynamics. The BTs “life strategy”, “trophic group”, and “tail shape” reflected ecological adaptations; but “amphidial fovea” and “cuticle”, likely reflected phylogenetic signatures from families/genera living in different habitats. Habitat type played an influential role in the diversity patterns of aquatic nematodes from taxonomic and functional points of view.

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Section: Discussionmentioning

confidence: 99%

Section: Biological Traitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Influential Role of the Habitat on the Diversity Patterns of Free-Living Aquatic Nematode Assemblages in the Cuban Archipelago

et al. 2019

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“…Nematodes have been found to enhance the oxygen production in diatom biofilms (Mathieu, Leflaive, Ten‐Hage, De Wit, & Buffan‐Dubau, ), and to enhance the mineralization of OM (Nascimento et al, ). Because of their different feeding behaviours in sediments, nematodes have been widely used in functional analyses (e.g., Semprucci, Cesaroni, Guidi, & Balsamo, ; Vanaverbeke, Merckx, Degraer, & Vincx, ). An increased knowledge of nematode community composition in the Baltic Sea could therefore further elucidate the role of trophic interactions in sediments under anthropogenic stress and climate change scenarios.…”

Section: Introductionmentioning

confidence: 99%

“…Because of their different feeding behaviours in sediments, nematodes have been widely used in functional analyses (e.g., Semprucci, Cesaroni, Guidi, & Balsamo, 2018;Vanaverbeke, Merckx, Degraer, & Vincx, 2011). An increased knowledge of nematode community composition in the Baltic Sea could therefore further elucidate the role of trophic interactions in sediments under anthropogenic stress and climate change scenarios.…”

Section: Introductionmentioning

confidence: 99%

Salinity drives meiofaunal community structure dynamics across the Baltic ecosystem

et al. 2019

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Coastal benthic biodiversity is under increased pressure from climate change, eutrophication, hypoxia, and changes in salinity due to increase in river runoff. The Baltic Sea is a large brackish system characterized by steep environmental gradients that experiences all of the mentioned stressors. As such it provides an ideal model system for studying the impact of on‐going and future climate change on biodiversity and function of benthic ecosystems. Meiofauna (animals < 1 mm) are abundant in sediment and are still largely unexplored even though they are known to regulate organic matter degradation and nutrient cycling. In this study, benthic meiofaunal community structure was analysed along a salinity gradient in the Baltic Sea proper using high‐throughput sequencing. Our results demonstrate that areas with higher salinity have a higher biodiversity, and salinity is probably the main driver influencing meiofauna diversity and community composition. Furthermore, in the more diverse and saline environments a larger amount of nematode genera classified as predators prevailed, and meiofauna‐macrofauna associations were more prominent. These findings show that in the Baltic Sea, a decrease in salinity resulting from accelerated climate change will probably lead to decreased benthic biodiversity, and cause profound changes in benthic communities, with potential consequences for ecosystem stability, functions and services.

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Composition of marine nematode communities across broad longitudinal and bathymetric gradients in the Northeast Chukchi and Beaufort Seas

et al. 2021

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Do the morphological and functional traits of free-living marine nematodes mirror taxonomical diversity?

Cited by 49 publications

References 45 publications

The Influential Role of the Habitat on the Diversity Patterns of Free-Living Aquatic Nematode Assemblages in the Cuban Archipelago

The Influential Role of the Habitat on the Diversity Patterns of Free-Living Aquatic Nematode Assemblages in the Cuban Archipelago

Salinity drives meiofaunal community structure dynamics across the Baltic ecosystem

Composition of marine nematode communities across broad longitudinal and bathymetric gradients in the Northeast Chukchi and Beaufort Seas

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