33 resultados para Bloom´s taxonomy


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Systematic relationships between the rusts on Goodeniaceae and Stylidiaceae were examined using phylogenetic analyses with two loci (internal transcribed spacer, large subunit region) from ribosomal DNA. Fresh specimens and herbarium material of four rust species (Puccinia dampierae, P. gilgiana, P. saccardoi and Uromyces scaevolae) from the Goodeniaceae and one (P. stylidii) from the Stylidiaceae were examined. A further species (P. lagenophorae) that is reported from hosts in Goodeniaceae and Asteraceae was included in our analysis. Our phylogenetic analysis recovered the rusts on Goodeniaceae and Stylidiaceae in clades sister to P. lagenophorae on Asteraceae. This supported a taxonomy in which P. lagenophorae is restricted to Asteraceae. Descriptions or taxonomic notes are provided for all of the known rusts on Goodeniaceae and Stylidiaceae.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Endoraecium is a genus of rust fungi that infects several species of Acacia in Australia, South-East Asia and Hawaii. This study investigated the systematics of Endoraecium from 55 specimens in Australia based on a combined morphological and molecular approach. Phylogenetic analyses were conducted on partitioned datasets of loci from ribosomal and mitochondrial DNA. The recovered molecular phylogeny supported a recently published taxonomy based on morphology and host range that divided Endoraecium digitatum into five species. Spore morphology is synapomorphic and there is evidence Endoraecium co-evolved with its Acacia hosts. The broad host ranges of E. digitatum, E. parvum, E. phyllodiorum and E. violae-faustiae are revised in light of this study, and nine new species of Endoraecium are described from Australia based on host taxonomy, morphology and phylogenetic concordance.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This manual consists of written descriptions of jungle perch Kuhlia rupestris production and video material to demonstrate each of the key production steps. Video links are at the end of each major written section in the document. To activate the link use ctrl click. The videos enhance the instructive ability of this manual. The keys to producing jungle perch are:  maintaining broodstock in freshwater or low salinity water less than 5 ppt  spawning fish in full seawater at 28C  incubating eggs in full seawater. Salinities must not be less than 32 ppt  ensuring that first feed jungle perch larvae have an adequate supply of copepod nauplii  rearing larvae in full seawater under bright light  use of gentle aeration in tanks  postponing spawns until adequate densities of copepod nauplii are present in ponds  sustaining copepod blooms in ponds for at least 20 days  avoiding use of paddlewheels in ponds  supplementary feeding with Artemia salina and weaning diets from 20 days after hatch  harvesting of fingerlings or fry after they are 25-30 mm in length (50 to 60 days post hatch)  covering tanks of fingerlings with 5 mm mesh and submerging freshwater inlets to prevent jumping.