Results 41 to 50 of about 99,754 (297)

Use of Spotted Knapweed/Star Thistle (Asterales: Asteraceae) as the Primary Source of Nectar by Early Migrating Monarch Butterflies (Lepidoptera: Nymphalidae) from Beaver Island, Michigan [PDF]

open access: yes, 2019
Recent observations over the past decade suggest that the invasive star thistle (aka spotted knapweed (Centaurea stoebe L.) provides much of the nectar that supports monarch butterflies (Danaus plexippus) in their pre-migratory and early migratory flight
Douglas, Matthew M
core   +2 more sources

Prevalence of monarch (Danaus plexippus) and queen (Danaus gilippus) butterflies in West Texas during the fall of 2018

open access: yesBMC Ecology, 2020
Background The monarch butterfly (Danaus plexippus) is a conspicuous insect that has experienced a drastic population decline over the past two decades.
Matthew Z. Brym   +5 more
doaj   +1 more source

Notes on Shifting Distribution Patterns and Survival of Immature \u3ci\u3eDanaus Plexippus\u3c/i\u3e (Lepidoptera: Danaidae) on the Food Plant \u3ci\u3eAsclepias Syriaca\u3c/i\u3e [PDF]

open access: yes, 2017
Abundance and distribution of immature stages of the monarch butterfly, Danaus plexippus, on the food plant Asclepias syriaca were examined at a site in southeastern Wisconsin over one growing season.
Borkin, Susan Sullivan
core   +2 more sources

Estimating Milkweed Abundance in Metropolitan Areas Under Existing and User-Defined Scenarios

open access: yesFrontiers in Ecology and Evolution, 2019
Metropolitan areas play an undetermined role in supporting migratory monarch butterfly (Danaus plexippus) populations despite providing habitat areas rich with milkweed (Asclepias spp.), the obligate host plants for monarch larvae.
Mark K. Johnston   +8 more
doaj   +1 more source

Fueling the fall migration of the monarch butterfly [PDF]

open access: yesIntegrative and Comparative Biology, 2006
Monarch butterflies in eastern North America accumulate lipids during their fall migration to central Mexico, and use them as their energy source during a 5 month overwintering period. When and where along their migratory journey the butterflies accumulate these lipids has implications for the importance of fall nectar sources in North America.
Lincoln P. Brower   +2 more
openaire   +3 more sources

A Neonicotinoid Insecticide at a Rate Found in Nectar Reduces Longevity but Not Oogenesis in Monarch Butterflies, Danaus plexippus (L.). (Lepidoptera: Nymphalidae)

open access: yesInsects, 2019
The monarch butterfly in North America has suffered a serious population decline since the mid-1990s. The introduction and widespread use of neonicotinoid insecticides during the same time period has been suggested as a potential driver of this decline ...
David G. James
doaj   +1 more source

Viceroy butterfly Limenitis archippus (Cramer) (Lepidoptera: Nymphalidae: Limenitidinae)

open access: yesEDIS, 2009
EENY-458, a 5-page illustrated fact sheet by Andrei Sourakov, is part of the Featured Creatures collection. It describes this black butterfly with white vertical stripes, which is similar to, but smaller than, the monarch butterfly — its synonymy ...
Andrei Sourakov
doaj   +5 more sources

Assessing Role of Major Drivers in Recent Decline of Monarch Butterfly Population in North America

open access: yesFrontiers in Environmental Science, 2018
Monarch (Danaus plexippus L.) is a long distance migratory species of butterfly in North America that has experienced population declines in recent years. Several interacting factors have been postulated to contribute to this decline.
Joseph Belsky, Neelendra K. Joshi
doaj   +1 more source

A de novo transcriptional atlas in Danaus plexippus reveals variability in dosage compensation across tissues

open access: yesCommunications Biology, 2021
Ranz et al. present a high-quality genome assembly for the monarch butterfly Danaus plexippus and a comprehensive set of RNA sequencing data across different tissues and life stages.
José M. Ranz   +10 more
doaj   +1 more source

Effects of Cry1Ab-Expressing Corn Anthers on Monarch Butterfly Larvae [PDF]

open access: yes, 2004
Previous studies suggest that exposure to corn, Zea mays L., anthers expressing Bacillus thuringiensis (Bt)-derived protein may have adverse effects on the larvae of monarch butterfly, Danaus plexippus (L.). To examine the potential effects of Bt anthers
Anderson, Patricia   +5 more
core   +3 more sources

Home - About - Disclaimer - Privacy