Results 101 to 110 of about 190,039 (301)

Meals for two: foraging activity of the butterflyfish Chaetodon Striatus (perciformes) in southeast Brazil

open access: yesBrazilian Journal of Biology
The banded butterflyfish (Chaetodon striatus) from the tropical and subtropical western Atlantic is a territorial, diurnal forager on benthic invertebrates. It is usually seen moving singly or in pairs, a few meters above the sea floor.
R. M. Bonaldo   +2 more
doaj   +1 more source

Opportunistic predation of a colony of Polybia platycephala (Richards) (Hymenoptera, Vespidae) by Labidus praedator (Smith) (Hymenoptera, Formicidae)

open access: yesSociobiology, 2016
Social wasps have developed several defense mechanisms, especially against ants. Predator attacks are the main threat to their nests. The strategy adopted by the wasps, when attacked by ants, is to abandon the nest, thus preserving the adult population ...
Tatiane Tagliatti Maciel   +2 more
doaj   +1 more source

Evolutionary history and taxonomy of the genus Zea

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Taxonomic differentiation of teosinte species (Zea spp.), the closest relatives of maize (Z. mays) is crucial for understanding their distribution, ecology, and evolutionary history. Resolving the taxonomic uncertainties is of scientific interest and has practical implications for biodiversity management, preservation, and utilization.
José de Jesús Sánchez González   +4 more
wiley   +1 more source

Habitat use by the critically endangered Blue Swallow in KwaZulu-Natal, South Africa

open access: yesBothalia: African Biodiversity & Conservation, 2018
Background: Habitat loss and fragmentation continue to threaten the survival of many species. One such species is the Blue Swallow Hirundo atrocaerulea, a critically endangered grassland specialist bird species endemic to sub-Saharan Africa.
James Wakelin   +4 more
doaj   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

open access: yesThe Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison   +9 more
wiley   +1 more source

The Melanin-Concentrating Hormone as an Integrative Peptide Driving Motivated Behaviors

open access: yesFrontiers in Systems Neuroscience, 2017
The melanin-concentrating hormone (MCH) is an important peptide implicated in the control of motivated behaviors. History, however, made this peptide first known for its participation in the control of skin pigmentation, from which its name derives.
Giovanne B. Diniz   +2 more
doaj   +1 more source

Much more than their fangs: Macroscopic anatomy of the brain of Bothrops moojeni Hoge 1966 (Squamata, Serpentes, Viperidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo   +2 more
wiley   +1 more source

Food deprivation changes chemotaxis behavior in Caenorhabditis elegans

open access: yesBiophysics and Physicobiology, 2019
Exploring for food is important in food-deprived condition. Chemotaxis is one of the important behaviors to search food. Although chemotactic strategies in C.
Kei Shimizu   +3 more
doaj   +1 more source

Computational fluid dynamics simulations of airflow through the nasal passages of rhinolophoid bats

open access: yesThe Anatomical Record, EarlyView.
Abstract The nasal passages of bats that emit their echolocation call through their nostrils have adapted for sound emission as well as standard respiratory and olfactory functions. Rhinolophids, hipposiderids and rhinonycterids all use a high duty cycle (HDC) echolocation strategy.
Carley Goodwin   +7 more
wiley   +1 more source

Artificial Diet Supplementation and Its Role in Enhancing Winter Survival and Productivity of Honey Bee Colonies

open access: yesSociobiology
Artificial diets are crucial for the survival of honey bee colonies in winter. A pollen-rich diet provides protein to the colonies and enhances their performance.
Naqeeb Ullah Shah   +7 more
doaj  

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