Are there controlled chronic nitrate, ammonia or nitrite exposure studies in Neocaridina?

This record shows how a current Neocaridina evidence gap was searched. It supports a dated statement about this search, not proof that no unlocated study exists.

Reviewed: August 12, 2026
Next review: February 12, 2027
Candidate decisions: 2
Governed gaps: 2

Search scope

Taxon names: Neocaridina davidi, Neocaridina heteropoda, Neocaridina denticulata sinensis.

Concepts: nitrate toxicity, ammonia toxicity, nitrite toxicity, chronic exposure.

Search surfaces: publisher and DOI records, PubMed, scholarly web indexes, institutional repositories.

Exact queries

Neocaridina davidi nitrate toxicity chronic nitrate experiment
"Neocaridina heteropoda" nitrate toxicity
"Neocaridina denticulata sinensis" nitrate exposure
site:pubmed.ncbi.nlm.nih.gov Neocaridina nitrate ammonia nitrite
"Neocaridina denticulata" chronic ammonia growth reproduction thesis
"Toxic Effects of Ammonia on the Freshwater Shrimp Neocaridina denticulata"

Candidate-source decisions

included

Efeito de compostos nitrogenados no camarao Neocaridina davidi e na ra Aquarana catesbeiana

Direct acute 96-hour ammonia and nitrite experiment, but not a chronic exposure study.

candidate

Toxic Effects of Ammonia on the Freshwater Shrimp Neocaridina denticulata

The official restricted-thesis record has a detailed abstract reporting acute tests and chronic total-ammonia groups with growth and reproductive endpoints, but the complete methods, exposure verification, denominators and statistical results are unavailable.

Search outcome

A restricted official thesis abstract identifies one chronic total-ammonia comparison in N. denticulata, but unavailable full methods prevent validation of its reported maximum acceptable concentration as a care threshold. No controlled chronic nitrate-only or chronic nitrite experiment was located. Both gaps remain open.

Knowledge gaps governed by this search

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Submit a stable source, missed search surface or correction. A candidate is not added to biological evidence until its methods and claim boundary pass review.