Search results for "taxonomy."
showing 10 items of 1110 documents
New Gynandromorph Records for Chirocephalus diaphanus (Branchiopoda, Anostraca, Chirocephalidae)
2021
We report and describe new Chirocephalus diaphanus Prévost, 1803 gynandromorphs from Tunisia and review the literature of anostracan gynandromorphy and other, possibly associated, somatic aberrations, with comments on their evolutionary significance. Our material has three specimens that are specifically deformed on the left side of the head.
Niche position drives interspecific variation in occupancy and abundance in a highly-connected lake system
2019
Highlights • We studied interspecific variation in occupancy and abundance of freshwater species. • Occupancy and abundance correlated positively for both diatoms and macroinvertebrates. • Niche position had clearest effects on variation in occupancy and abundance. • The more marginal the niche position, the rarer a species is. We examined how niche position, niche breadth, biological traits and taxonomic relatedness affect interspecific variation in occupancy and abundance of two commonly-used biological indicator groups, i.e. diatoms and macroinvertebrates. We studied 291 diatom and 103 macroinvertebrate species that occupied the littoral zones of a large (305 km2) highly-connected freshw…
Supplementary material 5 from: Vecchi M, Stec D (2021) Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotid…
2021
MrBayes analysis input file with the alignment
Supplementary material 6 from: Vecchi M, Stec D (2021) Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotid…
2021
MrBayes output consensus tree
Supplementary material 2 from: Vecchi M, Stec D (2021) Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotid…
2021
Raw morphometric data for Macrobiotus rybaki sp. nov. from Greece (GR.011, type population)
Supplementary material 1 from: Vecchi M, Stec D (2021) Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotid…
2021
Raw morphometric data for Macrobiotus annewintersae sp. nov. from U.S.A (S207 – US.084, type population)
Supplementary material 4 from: Vecchi M, Stec D (2021) Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotid…
2021
Partitions and models selection results
Supplementary material 3 from: Vecchi M, Stec D (2021) Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotid…
2021
Thorpe normalization calculations and results
Living Coccolithophores from the Gulf of Sirte (Southern Mediterranean Sea) during the summer of 2008
2012
The Gulf of Sirte is a largely unexplored area in the southernmost Mediterranean Sea.We are presenting here 2008 summer data on the distribution pattern of living coccolithophores, a main phytoplankton calcifying group, in 105 samples from 20 stations. The survey includes coastal and offshore stations, enabling us to provide indications on the dynamics of phytoplankton productivity in relation to oceanographic processes. The total coccosphere concentrations show higher values in the offshore stations and lower ones for coastal sites. Umbellosphaera tenuis, Emiliania huxleyi, Florisphaera profunda, Syracosphaera pulchra HOL (Calyptrosphaera oblonga) and Rhabdosphaera spp. dominate the assemb…
Sisubiotus hakaiensis sp. nov. (Tardigrada, Macrobiotidae), a new tardigrade species from Calvert Island (British Columbia, Canada)
2022
Tardigrades reports from British Columbia (Canada) trace back to 1908 and numerous species have been recorded from this region, despite the relatively few published sampling studies. We describe by integrative taxonomy (light microscopy morphology, morphometrics, and DNA sequencing) a new tardigrade species, Sisubiotus hakaiensis sp. nov. from the British Columbia central coast. The new species has been found in moss collected from a vertical rock outcrop near the Hakai Institute Calvert Island Field Station. Sisubiotus hakaiensis sp. nov. differs from all the other known species in the genus by the presence of a labyrinthine layer inside the egg process walls, whereas no consistent differe…