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16 records found
What chronic nitrate-only exposures affect Neocaridina across life stages?
No controlled chronic nitrate-only Neocaridina experiment was located in the current review.
Boundary: Would be answered by: Replicated concentration treatments with exact nitrate reporting basis, long exposure, water context and growth, reproduction, survival and sublethal endpoints.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
What are chronic ammonia and nitrite no-effect ranges for Neocaridina?
A direct N. davidi thesis provides a 96-hour acute juvenile experiment. An official abstract for a restricted 2007 N. denticulata thesis reports chronic total-ammonia growth and reproductive comparisons, but its complete methods and results are unavailable. Neither source establishes a chronic operating range, and no controlled chronic nitrite study was located.
Boundary: Would be answered by: The complete 2007 thesis methods and results plus independent replicated chronic ammonia and nitrite exposures across life stages with measured chemistry, exact nitrogen basis, confidence intervals and nonlethal endpoints.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
What dissolved-oxygen histories change survival, behaviour, growth or reproduction?
Occurrence values and study culture conditions are not tested chronic oxygen limits.
Boundary: Would be answered by: Replicated oxygen treatments with continuous traces, temperature and life-stage controls, including recovery and sublethal endpoints.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Does a particular filter type or turnover rate improve Neocaridina outcomes?
A field survey associated lower current velocity with higher juvenile density, but no assigned aquarium comparison supports a universal turnovers-per-hour rule or one required filter design.
Boundary: Would be answered by: Replicated complete-system comparisons holding biomass, feed, media maturity and intake retention constant.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
What GH, KH, pH and conductivity combinations are true biological optima?
Field occurrences and study culture water describe places or reproducible conditions, not species-wide GH, KH, pH or conductivity optima.
Boundary: Would be answered by: Factorial, replicated exposures across lines and life stages with measured ions and long-term biological endpoints.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
What photoperiod, intensity and spectrum support Neocaridina welfare and colony outcomes?
An open 2018 thesis found colour-associated differences in short-term lit-dish occupancy, but did not equalize light output, fully specify the repeated-measures model or measure welfare and long-term colony outcomes. Two recent studies also report short colour-specific responses after eyestalk gene knockdown, with incomplete public methods. None establishes an aquarium spectrum, intensity or photoperiod.
Boundary: Would be answered by: Replicated intact-aquarium comparisons that measure irradiance or illuminance at animal level, hold shelter, plants, algae, feed and temperature constant, and follow behaviour, molting, growth, survival and reproduction across life stages.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Which identified and conditioned leaf litters improve Neocaridina outcomes in home-like systems?
One abstract-level N. davidi study reports leaf choices and normalized consumption. A fully reviewed N. denticulata microcosm study separates direct shrimp contact from fecal contact on one cattail preparation and measures litter breakdown, enzymes and water chemistry, but not intake, dietary adequacy or long-term shrimp outcomes. The taxa, litter species and endpoints differ, and neither record establishes disease benefit or a replacement interval.
Boundary: Would be answered by: Replicated aquarium comparisons across identified litter species and conditioning histories, with a formulated-food baseline, non-consumption mass-loss controls, measured intake, water chemistry and shrimp survival, growth, reproduction and health endpoints.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Which complete diet and ration combinations support Neocaridina across the full colony life cycle?
Direct studies compare particular commercial products, formulated ingredient replacements, live feeds, biofilm systems and feeding frequencies. Their formulations, physical forms, ration methods, life stages and endpoints differ, so no study establishes one complete commercial food, pellet count, live feed or nutrient target for every colony.
Boundary: Would be answered by: Replicated aquarium comparisons with fully reported stable formulations, dry-matter ration, measured intake and leaching, life-stage and sex denominators, water chemistry, survival, growth, molting, reproduction, offspring and long-term health endpoints.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Does drip rate or transfer duration change post-arrival outcomes?
No direct Neocaridina comparison was located for drops per second, transfer duration or TDS-gap formulas.
Boundary: Would be answered by: Replicated transport and receiving-water comparisons with bag chemistry, matched transfer treatments and survival through delayed follow-up.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Which package combinations protect Neocaridina during real transport?
One wet closed-transport duration experiment and one atypical dry chilled experiment measured direct Neocaridina outcomes, but neither compared or validated the Molt & Moss breather-bag package, density, weather gate and receiving protocol.
Boundary: Would be answered by: Versioned package trials with internal temperature, bag chemistry, density, transit history and survival through at least seven days.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
How do named aquarium colour lines segregate in F1, F2 and backcross generations?
Molecular pigment studies do not provide inheritance ratios for trade lines, and seller charts are not pedigrees.
Boundary: Would be answered by: Source-separated, replicated crosses with parentage confidence, common scoring conditions and complete phenotype denominators.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
How do named fish species affect adult retention and juvenile recruitment?
Predator-cue behaviour and shelter studies did not place fish with shrimp and follow colony outcomes.
Boundary: Would be answered by: Replicated shrimp-only and named-fish comparisons with adult, hatchling and juvenile denominators over multiple broods.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
What is the individual hatch-to-death lifespan distribution in home-like aquaria?
Field cohort estimates, a reported laboratory maximum and one known-hatch growth series with losses are not complete individual aquarium lifespan distributions.
Boundary: Would be answered by: Known-hatch, individually tracked cohorts across replicated systems with censored removals and confirmed deaths.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Which treatment doses are effective and safe for confirmed Neocaridina health agents?
One three-aquarium conference abstract reported complete Deugesia removal and three-day survival of all 12 shrimp after mebendazole or albendazole additions, but it omitted aquarium volume, usable concentration, replicated vessels, explicit control results, sublethal endpoints and recurrence follow-up. No controlled efficacy-and-safety trial was located for common hobby salt, fenbendazole, praziquantel or peroxide doses against named Neocaridina health agents.
Boundary: Would be answered by: Confirmed-agent trials with concentration verification, exposure duration, untreated controls, life-stage safety and recurrence follow-up.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
What determines a stable operating capacity in a multigeneration home aquarium?
A 90-day juvenile density study, field density and an unreplicated three-generation observation cannot be multiplied into a planted-tank maximum.
Boundary: Would be answered by: Long, replicated complete-system studies with life-stage counts, feed, recruitment, growth, maintenance, nitrogen processing and welfare endpoints.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Which microplastic histories affect individual growth, reproduction and survival in home-like systems?
Direct studies now cover a short high-concentration polystyrene activity and metabolism exposure plus a five-month smooth-sphere population exposure. Neither represents varied household particle histories or directly measures fecundity and repeated individual growth.
Boundary: Would be answered by: Replicated aquaria with verified particle concentration, polymer, shape and size; contamination controls; realistic source histories; and direct individual growth, fecundity, egg, hatch and survival endpoints.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
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