Results 101 to 110 of about 136,050 (289)

Polyphemus pediculus (L.) (Cladocera) as a possible indicator of water quality [PDF]

, 1980
Usually stenobiotic species are used as hydrobiological indicators of the degree of pollution in natural waters. Cladocera are eurybiotic organisms, therefore their role as specific indicators of the water quality is considered to be insignificant ...
Butorina, L.G.
core  

On the nutrition of Polyphemus pediculus (L.). [Translation from: Trudy Instituta Biologii Vnutrennykh Vodnany 12(15) 170-174, 1966.] [PDF]

, 1966
Many sides of the biology of Polyphemus pediculus are adequately studied at the present time. Most complicated is the question of its feeding. Dissection does not give an idea of the composition of the food, since Polyphemus strongly grinds its food with
Butorina, L.G., Sorokin, Yu I.
core  

Sublittoral soft bottom communities and diversity of Mejillones Bay in northern Chile (Humboldt Current upwelling system) [PDF]

, 2006
The macrozoobenthos of Mejillones Bay (23°S; Humboldt Current) was quantitatively investigated over a 7-year period from austral summer 1995/1996 to winter 2002.
A Giraldo, A Gonzalez, AM Ramorino, BO Miranda, C Heip, C Neira, CE Morales, CP Chávez, D Gutiérrez, D Moraga, E Jaramillo, E López-Jamar, E Navea, F Pagès, J Alheit, J Laudien, J Tarazona, J Tarazona, J Tarazona, J Tarazona, J Valdés, JJ Tomicic, JL Gomez Gesteira, Jürgen Laudien, KH Mann, L Rodríguez, L Rodríguez, LA Levin, LA Levin, M Avendaño Díaz, M Avendaño Díaz, M Bergen, M Palma, Manuel E. Rojo, Marcelo E. Oliva, MJ Gutiérrez, MJ McPhaden, MR Byrnes, N Guzmán, N Valdivia, O Ulloa, O Zúñiga Romero, PT Strub, R Escribano, R Escribano, R Escribano, R Follegati, R Fuenzalida, R Fuenzalida, R Henríquez, RJ Díaz, RT Barber, Sven Thatje, T Fonseca, TA DelValls, TH Pearson, TS Peña, V Marín, V Marín, VA Gallardo, VA Gallardo, VH Marín, W Brandhorst, WE Arntz, Wolf E. Arntz   +64 more
core   +1 more source

Ionotropic Crustacean Olfactory Receptors

PLoS ONE, 2013
The nature of the olfactory receptor in crustaceans, a major group of arthropods, has remained elusive. We report that spiny lobsters, Panulirus argus, express ionotropic receptors (IRs), the insect chemosensory variants of ionotropic glutamate receptors.
E. Corey, Y. Bobkov, K. Ukhanov, B. Ache
semanticscholar   +1 more source

Environmental Sex Determination in the Branchiopod Crustacean Daphnia magna: Deep Conservation of a Doublesex Gene in the Sex-Determining Pathway

PLoS Genetics, 2011
Sex-determining mechanisms are diverse among animal lineages and can be broadly divided into two major categories: genetic and environmental. In contrast to genetic sex determination (GSD), little is known about the molecular mechanisms underlying ...
Yasuhiko Kato, Kaoru Kobayashi, Hajime Watanabe, T. Iguchi   +3 more
semanticscholar   +1 more source

Length-weight relationships for some important forage crustaceans from South Africa [PDF]

, 2000
The diet of marine animals is usually determined by stomach content analysis. Although partially digested prey fragments can often be identified to species level, it is difficult to estimate the original mass of the prey organism.
Gibbons, M.J., Isaacs, G., Lamberts, C., Moloney, C.L., Richardson, A.J.   +4 more
core  

Metazoans of redoxcline sediments in Mediterranean deep-sea hypersaline anoxic basins [PDF]

, 2015
Background: The deep-sea hypersaline anoxic basins (DHABs) of the Mediterranean (water depth similar to 3500 m) are some of the most extreme oceanic habitats known.
Beaudoin, David J, Bernhard, Joan M, Edgcomb, Virginia P, Kormas, Konstantinos Ar, Morrison, Colin R, Pachiadaki, Maria G, Pape, Ellen, Todaro, M Antonio   +7 more
core   +4 more sources

Density and gender segregation effects in the culture of the caridean ornamental red cherry shrimp Neocaridina davidi Bouvier, 1904 (Caridea: Atyidae) [PDF]

, 2017
The effect of density on growth, sex ratio, survival, and biochemical composition of the red cherry shrimp, Neocaridina davidi Bouvier, 1904, was studied to determine optimum rearing conditions in this ornamental species.
Delevati Colpo, Karine, Lopez, Laura Susana, Sganga, Daniela Eliana, Vázquez, Nicolás Darío   +3 more
core   +2 more sources

Heat Shock Protein 40 (HSP40) in Pacific White Shrimp (Litopenaeus vannamei): Molecular Cloning, Tissue Distribution and Ontogeny, Response to Temperature, Acidity/Alkalinity and Salinity Stresses, and Potential Role in Ovarian Development

Frontiers in Physiology, 2018
Heat shock proteins (HSPs), a family of conserved proteins that are produced by cells in response to stresses, are known as molecular chaperones with a range of housekeeping and cellular protective functions.
Ting Chen, Ting Chen, Tiehao Lin, Hongmei Li, Ting Lu, Jiaxi Li, Wen Huang, Wen Huang, Hongyan Sun, Xiao Jiang, Jiquan Zhang, Aifen Yan, Chaoqun Hu, Chaoqun Hu, Peng Luo, Peng Luo, Chunhua Ren, Chunhua Ren   +17 more
doaj   +1 more source

On a New Type of Crustacean from the Old Red Sandstone (Rhynie Chert Bed, Aberdeenshire)-Lepidocaris rhyniensis, gen. et sp. nov.

The Chert Bed of Middle, or possibly Lower, Old Red Sandstone age discovered by Dr. W. Mackie (1914) at Rhynie, in Aberdeenshire, has become famous among palaeo-botanists on account of the beautifully preserved remains of the earliest known land plants ...
D. Scourfield
semanticscholar   +1 more source