Results 61 to 70 of about 7,139,959 (205)

Phylogenetic and developmental studies into the evolution of an insect novelty [PDF]

, 2008
The insects possess one of the most instantly recognisable bodyplans. This thesis addresses the evolution of one characteristic feature of the insects: the intercalary segment of the head.
Economou, A.D., Economou, A D
core  

Testing use of mitochondrial COI sequences for the identification and phylogenetic analysis of New Zealand caddisflies (Trichoptera) [PDF]

, 2009
We tested the hypothesis that cytochrome c oxidase subunit 1 (COI) sequences would successfully discriminate recognised species of New Zealand caddisflies. We further examined whether phylogenetic analyses, based on the COI locus, could recover currently
DeWaard, Jeremy R., Hogg, Ian D., Ian D. Hogg, Jonathan C. Banks, Smith, Brian J., Brian J. Smith, Jeremy R. Dewaard, Banks, Jonathan C., Hebert, Paul D.N., Paul D. N. Hebert   +9 more
core   +1 more source

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

Advanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen, Patryk Wąsik, Juan Fernando Cucuyame Morales, Marie Kate Palau, Adrian Francisco Duran Ornelas, Phani Saketh Dasika, Jin Hee Kim, Radhika Laxminarayana, Eric Hintsala, Greta Chang, Junzhi Liao, Lizhi Sun, Nathan Lord, Atsushi Arakaki, Paul Bardunias, Pablo Zavattieri, David Kisailus   +16 more
wiley   +1 more source

Uganda chicken genetic resources: II. genetic diversity and population demographic history inferred from mitochondrial DNA D-loop sequences

Frontiers in Genetics
The genetic diversity of indigenous chickens, which comprise over 80% of the chicken resources in Uganda, is largely not well-characterized for their genetic contribution.
Illyass Yussif, Donald Rugira Kugonza, Charles Masembe   +2 more
doaj   +1 more source

Anthrax phylogenetic structure in Northern Italy

BMC Research Notes, 2011
Background Anthrax has almost disappeared from mainland Europe, except for the Mediterranean region where cases are still reported. In Central and South Italy, anthrax is enzootic, but in the North there are currently no high risk areas, with only ...
Corrò Michela, Serrecchia Luigina, Garofolo Giuliano, Fasanella Antonio   +3 more
doaj   +1 more source

Assessment of upper premolar morphological traits as reliable phylogenetic indicators [PDF]

, 2002
Upper premolar size and cusp heteromorphy have been used in several studies that argue for alternative phyletic placements of early and middle Miocene fossil hominoids relative to extant primate clades.
Blundell, Louie Chantale
core  

Data incongruence and the problem of avian louse phylogeny [PDF]

, 2004
Recent studies based on different types of data (i.e. morphological and molecular) have supported conflicting phylogenies for the genera of avian feather lice (Ischnocera: Phthiraptera).
Page, R.D.M., Smith, V.S., Johnson, K.P.
core   +1 more source

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

Advanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Relationship Between Evolutionary Diversity and Aboveground Biomass During 150 Years of Natural Vegetation Regeneration in Temperate China

Ecology and Evolution
While the link between plant species diversity and biomass has been well‐studied, the impact of evolutionary diversity on community biomass across long timescales or ongoing change remains a subject of debate.
Qilong Tian, Xiaoping Zhang, Miaoqian Wang, Jie He, Xiaoming Xu, Liang He, Haijie Yi, Haojia Wang   +7 more
doaj   +1 more source

Short-term evolution and dispersal patterns of fluconazole-resistance in Candida auris clade III

mBio
The rapid increase in infections caused by the emerging fungal pathogen Candida auris is of global concern, and understanding its expansion is a priority. The phylogenetic diversity of the yeast is clustered in five major clades, among which clade III is
Irving Cancino-Muñoz, Juan Vicente Mulet-Bayona, Carme Salvador-García, Nuria Tormo-Palop, Remedios Guna, Concepción Gimeno-Cardona, Fernando González-Candelas   +6 more
doaj   +1 more source