Results 61 to 70 of about 98,096 (280)
Frontiers in Ecology and Evolution, 2019 The monarch butterfly (Danaus plexippus), an iconic species that migrates annually across North America, has steeply declined in numbers over the past decade.
Rodrigo Solis-Sosa +5 more
doaj +1 more source
Spatial Synchrony of Monarch Butterflies [PDF]
The American Midland Naturalist, 2006 I examined spatial synchrony in populations of monarch butterflies (Danaus plexippus) during the summer breeding season across North America and while overwintering along the Pacific Coast. Spatial synchrony was observed in all analyses, but was particularly great among eastern summer populations and among overwintering populations on the Pacific Coast.
openaire +3 more sources
Navigational mechanisms of migrating monarch butterflies [PDF]
Trends in Neurosciences, 2010 Recent studies of the iconic fall migration of monarch butterflies have illuminated the mechanisms behind their southward navigation while using a time-compensated sun compass. Skylight cues, such as the sun itself and polarized light, are processed through both eyes and are probably integrated in the brain's central complex, the presumed site of the ...
Reppert, Steven M. +2 more
openaire +4 more sources
Avocado Cover Expansion in the Monarch Butterfly Biosphere Reserve, Central Mexico
Conservation, 2021 Avocado cultivation has reduced the extent of forest ecosystems in central Mexico, even in natural protected areas such as the Monarch Butterfly Biosphere Reserve (MBBR) where information on the extent and expansion dynamics of avocado cover is scant ...
J. E. Sáenz-Ceja, D. Pérez-Salicrup
semanticscholar +1 more source
Collecting \u3ci\u3eNeocurtilla Hexadactyla\u3c/i\u3e, the Northern Mole Cricket (Orthoptera: Gryllidae), in Iowa [PDF]
, 2017 (excerpt) The northern mole cricket, Neocurtilla hexadactyla (Perty), is a common insect that is infrequently collected perhaps owing to its burrowing and nocturnal habits.
DeWitt, J. R
core +2 more sources
Molecular Ecology Resources, 2023 Although being famous for sequestering milkweed cardenolides, the mechanism of sequestration and where cardenolides are localized in caterpillars of the monarch butterfly (Danaus plexippus, Lepidoptera: Danaini) is still unknown.
Domenic Dreisbach +6 more
semanticscholar +1 more source
Notes on Mayfly Nymphs from Northeastern Minnesota Which Key to \u3ci\u3eStenonema Vicarium\u3c/i\u3e (Ephemeroptera: Heptageniidae) [PDF]
, 2017 (excerpt) A review of the literature indicates that Stenonema vicarium (Walker) adults have not been collected from northeastern Minnesota. However, mayfly nymphs which key to that species, based on the descriptions in Lewis (1974), have been collected ...
Lager, Thomas M, Lewis, Philip A
core +2 more sources
Polarized Light Helps Monarch Butterflies Navigate [PDF]
Current Biology, 2004 During their spectacular migratory journey in the fall, North American monarch butterflies (Danaus plexippus) use a time-compensated sun compass to help them navigate to their overwintering sites in central Mexico. One feature of the sun compass mechanism not fully explored in monarchs is the sunlight-dependent parameters used to navigate.
Reppert, Steven M. +2 more
openaire +4 more sources
Frontiers in Ecology and Evolution, 2019 The eastern North American monarch butterfly population shows a long-term population decline. While it is hypothesized that forest loss on the wintering grounds and milkweed loss throughout the breeding range are responsible for the observed decline ...
Tara L. Crewe +2 more
doaj +1 more source
Mitochondrial DNA signature for range-wide populations of Bicyclus anynana suggests a rapid expansion from recent refugia [PDF]
, 2011 This study investigates the genetic diversity, population structure and demographic history of the afrotropical butterfly Bicyclus anynana using mitochondrial DNA (mtDNA).
Brakefield, P.M. +4 more
core +1 more source