Search found 41 matches

by Daudin
Thu Nov 16, 2006 8:14 am
Forum: General Shrimp Forum
Topic: Do really shrimps inlay calcium to their armours?
Replies: 1
Views: 920

Do really shrimps inlay calcium to their armours?

Hi all,

commonly is claimed that decapod crustaceans inlay calcium to their armours. I read in some doubtful literature source that shrimps are exception. They don´t do it allegedly. Thin and translucent molts indicate it. What do you think about it. What say your literature sources? Thanks.
by Daudin
Fri Nov 03, 2006 6:49 am
Forum: General Shrimp Forum
Topic: Can you help me identify this Shrimp?
Replies: 10
Views: 3526

Do you know origin of the animals?
by Daudin
Fri Sep 01, 2006 5:03 am
Forum: Supershrimp!
Topic: H. rubra
Replies: 22
Views: 9138

Thank you for your contributions. Today I found one molt of H. rubra after long conscionable seach. It is good sign to breed them! http://www.akvakrevetky.wz.cz/rubra.jpg http://www.akvakrevetky.wz.cz/rubra2.jpg http://www.akvakrevetky.wz.cz/rubra3.jpg http://www.akvakrevetky.wz.cz/rubra4.jpg
by Daudin
Thu Aug 24, 2006 11:27 pm
Forum: Supershrimp!
Topic: H. rubra
Replies: 22
Views: 9138

H. rubra

Hi,

I have 58 specimens of this species two months. I never saw any exuvia. Is it normal? How often your animal shed? Thanks.
by Daudin
Wed Jun 21, 2006 4:42 am
Forum: General Shrimp Forum
Topic: Cleaning method
Replies: 5
Views: 1508

Thanks for explanation and illustrative photo. I´m sorry, but it seems to me somewhat impractical-small capacity and laborious. For clening and water change I use garden hose with net. If I use mesh with small gaps I save shrimps but I don´t suck off debris. If I use mesh with big gaps I suck off de...
by Daudin
Wed Jun 21, 2006 4:16 am
Forum: General Shrimp Forum
Topic: Cleaning method
Replies: 5
Views: 1508

Hi bludusty,

thanks, but I don´t know what is turkey baster even if I use dictionary. Can you explain it?
by Daudin
Wed Jun 21, 2006 3:49 am
Forum: General Shrimp Forum
Topic: Cleaning method
Replies: 5
Views: 1508

Cleaning method

Hi all,

does anyone know some save method how to remove debris from aquarium water, but no shrimp juveniles? Thanks for your tips.
by Daudin
Thu Mar 30, 2006 1:37 pm
Forum: Supershrimp!
Topic: Hawaiian Red Shrimp...my turn.
Replies: 68
Views: 33999

Some potentially interesting extracts from science papers about H.rubra and their habitat. Bailey-Brock JH, R.E. Brock. 1993. Aspects of the feeding, reproduction and sensory biology of the Hawaiian anchialine shrimp, Halocaridina rubra Holthuis (Atyidae). Pac. Sci. 47:338-355. : „Salinity of the po...
by Daudin
Sat Mar 11, 2006 6:32 am
Forum: Supershrimp!
Topic: Hawaiian Red Shrimp...my turn.
Replies: 68
Views: 33999

Hi all, maybe Opae ula needs salinity fluctuations for regular and successful reproduction (tide influence ?). Stable salinity (whether high or now) is not good. Or Opae ula needs salinity gradient in its environment, where animals find correct salinity to fit to specific ontogenetic stage or fyziol...
by Daudin
Wed Mar 08, 2006 3:14 pm
Forum: Supershrimp!
Topic: Halocaridina rubra care
Replies: 23
Views: 20398

How many species exist in Halocaridina genus? Are all opae ula in our tanks the same species?:

http://www.auburn.edu/~santosr/pdf/Craf ... Poster.jpg
by Daudin
Fri Mar 03, 2006 7:54 am
Forum: Supershrimp!
Topic: Halocaridina rubra care
Replies: 23
Views: 20398

Opae ula natural densities: "The abundance of Halocaridina rubra in the Sailor's Hat pool is low. In most anchialine systems, H. rubra is one of the most common species with densities exceeding a thousand individuals per square meter of substratum (Brock, unpub. data). It has been hypothesized ...