DNA Barcoding in Marine Nematodes: Successes and Pitfalls

Bhadury, Punyasloke

doi:10.1007/978-3-319-41840-7_8

Cited by 1 publication

(1 citation statement)

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“…The high abundance confers a streamlined sampling process and the persistence of nematodes within the top layer of marine sediments, especially with increasing water depth (Soetaert et al, 1997), makes large-scale sampling a cost-effective possibility. Barcoding and next generation sequencing can offer a partial solution to the lack of taxonomic expertise and the requirement of rapid biodiversity assessment using nematodes (Bhadury et al, 2006;Bhadury, 2016), but expansion of DNA libraries to support identification of sequences is required to move beyond operational taxonomic units and diversity numbers and achieve systematic and functional trait data. In addition, new developments in visualization techniques and automated image recognition certainly offers promise in enhancing the speed of identification (Kitahashi et al, 2018).…”

Section: Biological Indicators Must Be Well Studied Easy and Inexpensive To Studymentioning

confidence: 99%

Suitability of Free-Living Marine Nematodes as Bioindicators: Status and Future Considerations

Ridall

Ingels

2021

Front. Mar. Sci.

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Nematodes are among the most abundant organisms on Earth, and have important roles in terrestrial, freshwater, and marine ecosystems. Free-living marine nematodes have been used successfully as indicators of biological health and ocean pollution for at least the past 40 years, but their use as bioindicators is not ubiquitous. They have been most often used specifically as indicators of heavy metal and hydrocarbon pollution, with far fewer instances of their use as indicators of biological, environmental, or physical perturbations. Although free-living marine nematodes are among the best bioindicators owing to their worldwide distributions, abundances, and genus- and species-specific responses to environmental pollution, there are still some challenges that prevent their use globally. Here, we present a review of characteristics that make free-living marine nematodes excellent bioindicators, recent studies that have used them as bioindicators, and suggestions for future directions in the use of these fauna as indicators in the marine environment. Specifically, we consider the use of marine nematodes for microplastics (an understudied class of pollutants that are a future threat to global biodiversity), the value of current nematode indices as measures of ecosystem health, and the importance of improved and continued international collaboration in the field of marine nematology.

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