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Fairy, tadpole, and clam shrimps (Branchiopoda) in seasonally inundated clay pans in the western Mojave Desert and effect on primary producers.
Saline Systems 2010; 6:11SS

Abstract

BACKGROUND

Fairy shrimps (Anostraca), tadpole shrimps (Notostraca), clam shrimps (Spinicaudata), algae (primarily filamentous blue-green algae [cyanobacteria]), and suspended organic particulates are dominant food web components of the seasonally inundated pans and playas of the western Mojave Desert in California. We examined the extent to which these branchiopods controlled algal abundance and species composition in clay pans between Rosamond and Rogers Dry Lakes. We surveyed branchiopods during the wet season to estimate abundances and then conducted a laboratory microcosm experiment, in which dried sediment containing cysts and the overlying algal crust were inundated and cultured. Microcosm trials were run with and without shrimps; each type of trial was run for two lengths of time: 30 and 60 days. We estimated the effect of shrimps on algae by measuring chlorophyll content and the relative abundance of algal species.

RESULTS

We found two species of fairy shrimps (Branchinecta mackini and B. gigas), one tadpole shrimp (Lepidurus lemmoni), and a clam shrimp (Cyzicus setosa) in our wet-season field survey. We collected Branchinecta lindahli in a pilot study, but not subsequently. The dominant taxa were C. setosa and B. mackini, but abundances and species composition varied greatly among playas. The same species found in field surveys also occurred in the microcosm experiment. There were no significant differences as a function of experimental treatments for either chlorophyll content or algal species composition (Microcoleus vaginatus dominated all treatments).

CONCLUSIONS

The results suggest that there was no direct effect of shrimps on algae. Although the pans harbored an apparently high abundance of branchiopods, these animals had little role in regulating primary producers in this environment.

Authors+Show Affiliations

Environmental Planning, U.S. Army Corps of Engineers, 1455 Market St., San Francisco, CA 94103, USA.University of California San Diego White Mountain Research Station and Sierra Nevada Aquatic Research Lab, 3000 E Line St., Bishop CA 93514, USA.University of California San Diego White Mountain Research Station and Sierra Nevada Aquatic Research Lab, 3000 E Line St., Bishop CA 93514, USA.Texas A&M University Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21143855

Citation

Brostoff, W N., et al. "Fairy, Tadpole, and Clam Shrimps (Branchiopoda) in Seasonally Inundated Clay Pans in the Western Mojave Desert and Effect On Primary Producers." Saline Systems, vol. 6, 2010, p. 11.
Brostoff WN, Holmquist JG, Schmidt-Gengenbach J, et al. Fairy, tadpole, and clam shrimps (Branchiopoda) in seasonally inundated clay pans in the western Mojave Desert and effect on primary producers. Saline Syst. 2010;6:11.
Brostoff, W. N., Holmquist, J. G., Schmidt-Gengenbach, J., & Zimba, P. V. (2010). Fairy, tadpole, and clam shrimps (Branchiopoda) in seasonally inundated clay pans in the western Mojave Desert and effect on primary producers. Saline Systems, 6, p. 11. doi:10.1186/1746-1448-6-11.
Brostoff WN, et al. Fairy, Tadpole, and Clam Shrimps (Branchiopoda) in Seasonally Inundated Clay Pans in the Western Mojave Desert and Effect On Primary Producers. Saline Syst. 2010 Dec 8;6:11. PubMed PMID: 21143855.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fairy, tadpole, and clam shrimps (Branchiopoda) in seasonally inundated clay pans in the western Mojave Desert and effect on primary producers. AU - Brostoff,W N, AU - Holmquist,J G, AU - Schmidt-Gengenbach,J, AU - Zimba,P V, Y1 - 2010/12/08/ PY - 2010/02/24/received PY - 2010/12/08/accepted PY - 2010/12/15/entrez PY - 2010/12/15/pubmed PY - 2010/12/15/medline SP - 11 EP - 11 JF - Saline systems JO - Saline Syst. VL - 6 N2 - BACKGROUND: Fairy shrimps (Anostraca), tadpole shrimps (Notostraca), clam shrimps (Spinicaudata), algae (primarily filamentous blue-green algae [cyanobacteria]), and suspended organic particulates are dominant food web components of the seasonally inundated pans and playas of the western Mojave Desert in California. We examined the extent to which these branchiopods controlled algal abundance and species composition in clay pans between Rosamond and Rogers Dry Lakes. We surveyed branchiopods during the wet season to estimate abundances and then conducted a laboratory microcosm experiment, in which dried sediment containing cysts and the overlying algal crust were inundated and cultured. Microcosm trials were run with and without shrimps; each type of trial was run for two lengths of time: 30 and 60 days. We estimated the effect of shrimps on algae by measuring chlorophyll content and the relative abundance of algal species. RESULTS: We found two species of fairy shrimps (Branchinecta mackini and B. gigas), one tadpole shrimp (Lepidurus lemmoni), and a clam shrimp (Cyzicus setosa) in our wet-season field survey. We collected Branchinecta lindahli in a pilot study, but not subsequently. The dominant taxa were C. setosa and B. mackini, but abundances and species composition varied greatly among playas. The same species found in field surveys also occurred in the microcosm experiment. There were no significant differences as a function of experimental treatments for either chlorophyll content or algal species composition (Microcoleus vaginatus dominated all treatments). CONCLUSIONS: The results suggest that there was no direct effect of shrimps on algae. Although the pans harbored an apparently high abundance of branchiopods, these animals had little role in regulating primary producers in this environment. SN - 1746-1448 UR - https://www.unboundmedicine.com/medline/citation/21143855/Fairy_tadpole_and_clam_shrimps__Branchiopoda__in_seasonally_inundated_clay_pans_in_the_western_Mojave_Desert_and_effect_on_primary_producers_ L2 - https://aquaticbiosystems.biomedcentral.com/articles/10.1186/1746-1448-6-11 DB - PRIME DP - Unbound Medicine ER -