Results 51 to 60 of about 5,753 (220)

PicoCam: High‐resolution 3D imaging of live animals and preserved specimens

Methods in Ecology and Evolution
The PicoCam system is a multi‐camera photogrammetry rig used for generating high‐resolution 3D models of animals in the field, or preserved specimens in laboratory or museum settings.
Josh Medina, Duncan Irschick, Kevin Epperly, David Cuban, Rosalee Elting, Lucas Mansfield, Nora Lee, Ana Melisa Fernandes, Felipe Garzón‐Agudelo, Alejandro Rico‐Guevara   +9 more
doaj   +1 more source

Heterospecific pollen deposition among plants sharing hummingbird pollinators in the Brazilian Atlantic Forest

Rodriguésia
Hummingbirds are the most important group of pollinating birds in the Neotropics and tend to use, concomitantly, more than one plant species as food source. Pollen may be mixed on hummingbirds' body due to the visits to different plant species; therefore,
Lorena Coutinho Nery da Fonseca, André Rodrigo Rech, Pedro Joaquim Bergamo, Vania Gonçalves-Esteves, Marlies Sazima   +4 more
doaj   +1 more source

Reproductive biology and pollination of Aechmea distichantha Lem. (Bromeliaceae) Biologia reprodutiva e polinização em Aechmea distichantha Lem. (Bromeliaceae)

Acta Botânica Brasílica, 2011
Reproductive biology, including phenology, flower biology, pollination, and the reproductive system in the bromeliad Aechmea distichantha were studied in an Araucaria forest in the state of Paraná.
Gilson João Scrok, Isabela Galarda Varassin   +1 more
doaj   +1 more source

Reproductive biology and nectar secretion dynamics of Penstemon gentianoides (Plantaginaceae): a perennial herb with a mixed pollination system? [PDF]

PeerJ, 2017
Background In many plant species, pollination syndromes predict the most effective pollinator. However, other floral visitors may also offer effective pollination services and promote mixed pollination systems.
Lucía Salas-Arcos, Carlos Lara, Juan Francisco Ornelas   +2 more
doaj   +2 more sources

Relationship between carina size and sternum morphology in birds reflects physical constraints of body size and flight style

Journal of Anatomy, EarlyView.
Sternum morphology varies among birds and is a function of body mass and order. The area of the sternum is inversely related to the area of the keel suggesting that the increase in bone mass associated with a large keel has been mitigated by a reduction in bone mass of the sternum.
D. C. Deeming
wiley   +1 more source

Elementary GLOBE: Honing in on Hummingbirds [PDF]

, 2008
In this activity, students will record a list of things they already know about hummingbirds and a list of things they would like to learn about hummingbirds. Then they will conduct research to find answers to their questions.

core  

Scholander-Irving measurements for Costa's hummingbirds

, 2019
Respirometry measurements of oxygen consumption for Costa's hummingbirds in a temperature-controlled chamber. Used to model the thermoneutral zone for broad-billed hummingbirds.
Graham, Catherine H, Powers, Donald R, Donald R Powers (8136591), Joseph R Canepa (8136585), Shankar, Anusha, Wethington, Susan M, Anusha Shankar (8136573), Susan M Wethington (8136588), Canepa, Joseph R, Catherine H Graham (8136582)   +9 more
core   +1 more source

Comparative chromosome painting in hummingbirds (Trochilidae).

, 2022
Hummingbirds (Trochilidae) are one of the most enigmatic avian groups, and also among the most diverse, with approximately 360 recognized species in 106 genera, of which 43 are monotypic.

core   +2 more sources

Breeding biology and distyly in Palicourea rigida H. B. & K. (Rubiaceae) in the Cerrados of Central Brazil Biologia reprodutiva e distilia em Palicourea rigida H. B. & K. (Rubiaceae) em Cerrados do Brasil Central

Acta Botânica Brasílica, 2010
Distyly is a floral polymorphism more common among the Rubiaceae than in any other angiosperm group. Palicourea rigida is a typically distylous species of the Rubiaceae widely distributed in the Brazilian Cerrados.
Adriana de Oliveira Machado, Ana Palmira Silva, Helder Consolaro, Mariluza A. Granja e Barros, Paulo Eugênio Oliveira   +4 more
doaj   +1 more source

The pectoralis muscle orientation as an indicator of the modes of wing‐propelled locomotion in birds

Journal of Anatomy, EarlyView.
The pectoralis orientation of birds was consistent with the orientation of the aerodynamic force acting on the wing, varying by wing‐propelled locomotion (WPL) mode. The skeletal morphology unique to each WPL mode, related to the origin/insertion of the pectoralis, may be associated with these functional demands of pectoralis orientation.
Takumi Akeda, Shin‐ichi Fujiwara
wiley   +1 more source