Exit this survey Giant Spider Crab - Macrocheira Husbandry Survey Question Title * 1. What is the name of your facility? This answer is confidential, only used to sort for multiple responses from the same facility. Question Title * 2. What is the current status of Macrocheira in your collection? Currently in collection Have been in the collection in the past Planned for future collection (skip to end of survey) Have never had them, do not plan to acquire (skip to end) Question Title * 3. If you currently hold Macrocheiria, please indicate number of animals of each sex: Male Female Unknown Question Title * 4. What water temperature range most closely matches the target water temperature of your exhibit(s)? < 44 Degrees F. / 6.7C. 45-49 Degrees F. / 7.2-9.4C. 50-52 Degrees F. / 10-11.1C. 53-55 Degrees F. / 11.7-12.8C. 56-58 Degrees F. / 13.3-14.4C. 59-61 Degrees F. / 15-16.1C. > 62 Degrees F. / > 16.7 Question Title * 5. What is the typical pH range for your crab system(s): <7.2 7.3-7.5 7.6-7.8 7.9-8.1 8.2-8.4 >8.5 Question Title * 6. What is your source for seawater? Natural Synthetic (commercial - list brand below) Synthetic (in-house recipe) Mixture of above Question Title * 7. Brand of Commercial Sea Salt (if used): Question Title * 8. What specific gravity OR salinity do you house your crabs at? <1.018 S.G. / <23 ppt Salinity 1.019-1.020 S.G. / 24-26 ppt 1.021-1.022 S.G. / 27-29 ppt 1.023-1.024 S.G. / 30-32 ppt 1.025-1.026 S.G. / 33-35 ppt >1.026 S.G. / >36 ppt Question Title * 9. What is the light level of your Macrocheira exhibit typically kept at: Very dim (no algae growth in exhibit or on crab shells) <20 Lux Dim (minor brown algae growth seen) 25-75 Lux Low (algae growth needs to be removed - but infrequently) 100-300 Lux Moderate (algae growth needs to be removed monthly) 500-1500 Lux High (similar to other exhibits in the facilty >1500 Lux Question Title * 10. What causes of mortality have you seen/suspected in Macrocheira at your facility? Please select all that apply. Shipping mortality (including 24 hours post-shipment) Molting difficulty Black spot / shell erosion Injury from tankmate Life support system failure - temperature control Life support system failure - water quality Age-associated Euthanasia Unknown Have not yet seen mortality Other (please specify) Question Title * 11. What is the most SERIOUS cause of unresolved mortality at your facility? Shipping mortality (including 24 hours post-shipment) Molting difficulty Black spot / shell erosion Injury from tankmate Life support system failure - temperature control Life support system failure - water quality Age-associated Euthanasia Unknown Have not yet seen mortality Question Title * 12. Typically, how often are the crabs fed? Multiple times each day Daily Weekly 2x Week 3x Week 4x Week 5x Week 6x Week Question Title * 13. What food items are routinely fed to the Macrocheira at your facility? White fish: Capelin / Smelt / Silversides Red Fish: Herring / Salmon Squid Shrimp Krill Bivalves Gelatin diet (commercial formula, please identify company) Gelatin diet (in-house recipe) Algae / plant material Other (please specify) Question Title * 14. What other species have you SUCCESSFULLY housed long-term with Macrocheira? (Meaning; minimal to no aggression seen between species, and you would expect them to live together well for over a year) Ratfish Sharks/rays Hagfish Roughy Snipefish Anemones Gastropods Shrimp Crabs Echinoderms Algae Other (please specify) Question Title * 15. If you want to see a copy of the results, please enter your email address below: Question Title * 16. If you would be interested in participating in a more in-depth survey, please enter your email address above and select the check box below: Yes - I would be interested in participating in a future survey Done