Size spectra, biomass, and trophic groups of free‐living marine nematodes along a water‐depth gradient in the northwestern Gulf of Mexico

Jesús‐Navarrete, Alberto de; Armenteros, Maickel; Espositos, Abel Vargas; Rocha‐Olivares, Axayácatl

doi:10.1111/maec.12723

Cited by 4 publications

(1 citation statement)

References 56 publications

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“…The five newly identified species presented were all derived from sediment samples in water depths of less than 2 m. Previous investigations have demonstrated the absence of NTF beyond a water depth of 4 m [13]. However, abundant aquatic nematodes still exist in deeper waters [43,44]. At such depths, there must be other nematode regulators to perform the function of aquatic nematode population regulation instead of NTF.…”

Section: Discussionmentioning

confidence: 99%

Multilocus Phylogeny and Characterization of Five Undescribed Aquatic Carnivorous Fungi (Orbiliomycetes)

Zhang,

Yang,

Zhou

et al. 2024

JoF

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The diversity of nematode-trapping fungi (NTF) holds significant theoretical and practical implications in the study of adaptive evolution and the bio-control of harmful nematodes. However, compared to terrestrial ecosystems, research on aquatic NTF is still in its early stages. During a survey of NTF in six watersheds in Yunnan Province, China, we isolated 10 taxa from freshwater sediment. Subsequent identification based on morphological and multigene (ITS, TEF1-α, and RPB2) phylogenetic analyses inferred they belong to five new species within Arthrobotrys. This paper provides a detailed description of these five novel species (Arthrobotrys cibiensis, A. heihuiensis, A. jinshaensis, A. yangbiensis, and A. yangjiangensis), contributing novel insights for further research into the diversity of NTF and providing new material for the biological control of aquatic harmful nematodes. Additionally, future research directions concerning aquatic NTF are also discussed.

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Section: Discussionmentioning

confidence: 99%

Multilocus Phylogeny and Characterization of Five Undescribed Aquatic Carnivorous Fungi (Orbiliomycetes)

Zhang,

Yang,

Zhou

et al. 2024

JoF

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Setting an Environmental Baseline for the Deep-Sea Slope Offshore Northwestern Cuba (Southeastern Gulf of Mexico) Using Sediments and Nematode Diversity

Armenteros,

Marzo-Pérez,

Pérez-García

et al. 2024

Thalassas

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Deep-sea offshore northwestern Cuba is the less studied zone of the Gulf of Mexico (GoM). Our study aimed to set an environmental baseline and investigate a potential west-east gradient of sediment properties and nematode diversity along the northwestern Cuba. Sediments were collected by multicorer at nine sites in the insular slope between 974 and 1682 m depth. Sediment texture and composition showed a west-east gradient caused likely by narrowing of shelf width and increasing of downslope transport of terrigenous material. We found clear signatures of heavy metal pollution likely derived from Havana City but also from open-sky mining (Castellanos mining complex) and port dredging operations (Mariel). Nematode assemblages were dominated by the deep-sea genera: Acantholaimus, Metadasynemella, Desmodorella, Cervonema, Daptonema, Halalaimus, and Pselionema. α-diversity was about 20–50 genera and γ-diversity of about 100 genera. The β-diversity was substantial likely because small-scale patchiness of resources and heavy metals stress that increased assemblage variability. Individual weight decreased with depth indicating food-supply limitation in the deep sea; also, heavy metals were negatively correlated with weight suggesting deleterious effects on the growing. Our findings indicate that heavy metal pollution has reached deep-sea sediments and corroborate the long-range effects of anthropogenic activities on deep sea. Taxonomic diversity and biological traits (life strategy and trophic composition) constituted a powerful bioindicator of benthic health and benchmark for future potential disturbances in the region. Northwestern Cuba slope is still an understudied portion of the GoM and more research is needed to fully understand its biodiversity and biogeochemical patterns.

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Free-living nematode assemblages along a water-depth gradient in the Perdido belt, northwestern Gulf of Mexico

Vargas-Espositos,

de Jesús-Navarrete,

Pérez-Pech

et al. 2023

Regional Studies in Marine Science

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Size spectra, biomass, and trophic groups of free‐living marine nematodes along a water‐depth gradient in the northwestern Gulf of Mexico

Cited by 4 publications

References 56 publications

Multilocus Phylogeny and Characterization of Five Undescribed Aquatic Carnivorous Fungi (Orbiliomycetes)

Multilocus Phylogeny and Characterization of Five Undescribed Aquatic Carnivorous Fungi (Orbiliomycetes)

Setting an Environmental Baseline for the Deep-Sea Slope Offshore Northwestern Cuba (Southeastern Gulf of Mexico) Using Sediments and Nematode Diversity

Free-living nematode assemblages along a water-depth gradient in the Perdido belt, northwestern Gulf of Mexico

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