Results 121 to 130 of about 4,791,023 (247)

Population genetics of Zamia decumbens (Zamiaceae, Cycadales), an endangered cycad from the Maya Mountains of Belize

open access: yesPlant Species Biology, EarlyView.
We utilized 10 microsatellite loci to examine the genetic diversity, genetic structure, and demographic history of Zamia decumbens Calonje, Meerman, M.P. Griff. & Hoese, an endangered cycad species occurring in small disjunct populations on karst topography within the Maya Mountains of Belize.
Michael Calonje   +4 more
wiley   +1 more source

Foraging by predatory ants: A review

open access: yesInsect Science, EarlyView.
This review focuses on ecological and behavioral characteristics of foraging in ants showing the wide diversity of cases. Most ants can feed on sugary substances, but some ground‐nesting species are strict predators. Except army ants during the nomadic phase, they are central‐place foragers that can recruit nestmates when necessary. They prey mostly on
Alain Dejean   +5 more
wiley   +1 more source

The use of microsatellite markers in Neotropical studies of wild birds: a literature review

open access: yesAnais da Academia Brasileira de Ciências
Despite extensive habitat fragmentation, the Neotropical region possesses 30% of the world´s bird species. Microsatellites have remained one of the most popular genetic markers and have been used in ecological and conservation studies since the 1990’s ...
RENAN F. MOURA   +2 more
doaj   +1 more source

A subspecies of region crossing change, region freeze crossing change [PDF]

open access: yesarXiv, 2016
We introduce a local move on a link diagram named a region freeze crossing change which is close to a region crossing change, but not the same. We study similarity and difference between region crossing change and region freeze crossing change.
arxiv  

Coleopterous galls from the Neotropical region

open access: yesPapéis Avulsos de Zoologia, 2012
Data on Neotropical coleopterous galls were compiled from the literature, which showed that 82 galls have so far been recorded among 77 plant species. The Fabaceae and Asteraceae plant families display the greatest richness in galls.
Valéria Cid Maia
doaj   +1 more source

Note on regions containing eigenvalues of a matrix [PDF]

open access: yesarXiv, 2017
By excluding some regions, in which each eigenvalue of a matrix is not contained, from the \alpha\beta-type eigenvalue inclusion region provided by Huang et al.(Electronic Journal of Linear Algebra, 15 (2006) 215-224), a new eigenvalue inclusion region is given.
arxiv  

Alien range size, habitat breadth, origin location, and domestication of alien species matter to their impact risks

open access: yesIntegrative Zoology, Volume 20, Issue 3, Page 520-534, May 2025.
We collected information on 1071 established alien terrestrial vertebrate species (mammals, birds, reptiles, and amphibians) and created a comprehensive database of 108 alien species to assess their impact risks and examined the generality of relationships between the impact risks and species characteristics.
Siqi WANG   +4 more
wiley   +1 more source

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