نتایج جستجو برای: azolla microphylla

تعداد نتایج: 882  

Journal: :Tanzania journal of health research 2009
V S Mwingira B K Mayala K P Senkoro S F Rumisha E H Shayo M R S Mlozi L E G Mboera

Azolla (Salviniales: Azollaceae) is known to reduce oviposition and adult emergence of a number of mosquito species. Several species of Azolla are reportedly indigenous to Tanzania. However, the potential of Azolla as a biocontrol agent against malaria mosquitoes has not been evaluated in the country. This cross-sectional study was carried out to assess mosquito larval productivity in irrigated...

Journal: :Jurnal Ilmiah Peternakan Terpadu 2023

The study aimed to determine feed consumption, body weight gain, and conversion of male Magelang ducks with the addition Azolla microphylla in ration. This used a completely randomized design (CRD) 4 treatments 5 replications. In each replication, there were 2 aged weeks ( average is 747,18±103,9 g) reared for 7 weeks. treatment consisted P0 control diet without substitution, P1 + 10%., P2 15%....

2007
Jordan S. Metzgar Harald Schneider Kathleen M. Pryer

A phylogeny for all extant species of the heterosporous fern genus Azolla is presented here based on more than 5000 base pairs of DNA sequence data from six plastid loci (rbcL, atpB, rps4, trnL-trnF, trnG-trnR, and rps4-trnS). Our results are in agreement with other recent molecular phylogenetic hypotheses that support the monophyly of sections Azolla and Rhizosperma and the proposed relationsh...

2012
Monique M. L. van Kempen Alfons J. P. Smolders Leon P. M. Lamers Jan G. M. Roelofs

In order to understand the physicochemical mechanisms that could explain the massive growth of Azolla arctica in the Eocene Arctic Ocean, we carried out a laboratory experiment in which we studied the interacting effects of rain and wind on the development of salinity stratification, both in the presence and in the absence of a dense Azolla cover. Additionally, we carried out a mesocosm experim...

Journal: :Geobiology 2009
E N Speelman M M L Van Kempen J Barke H Brinkhuis G J Reichart A J P Smolders J G M Roelofs F Sangiorgi J W de Leeuw A F Lotter J S Sinninghe Damsté

Enormous quantities of the free-floating freshwater fern Azolla grew and reproduced in situ in the Arctic Ocean during the middle Eocene, as was demonstrated by microscopic analysis of microlaminated sediments recovered from the Lomonosov Ridge during Integrated Ocean Drilling Program (IODP) Expedition 302. The timing of the Azolla phase (approximately 48.5 Ma) coincides with the earliest signs...

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