Results 91 to 100 of about 99,754 (297)

Wetland location and captive breeding influence trans‐Mediterranean movements in the endangered Marbled Duck (Marmaronetta angustirostris)

open access: yesIbis, EarlyView.
Waterbirds distributed in semi‐arid and arid regions seem to have adapted their behaviour to the availability and seasonality of wetlands, increasing their mobility range. The Marbled Duck Marmaronetta angustirostris is a threatened waterbird that shows trans‐Mediterranean movements but these are poorly known.
Irene Pacheco‐Guardiola   +6 more
wiley   +1 more source

A Novel Monarch Butterfly Optimization with Global Position Updating Operator for Large-Scale 0-1 Knapsack Problems

open access: yesMathematics, 2019
As a significant subset of the family of discrete optimization problems, the 0-1 knapsack problem (0-1 KP) has received considerable attention among the relevant researchers.
Yanhong Feng, Xu Yu, Gai-Ge Wang
doaj   +1 more source

Effects of soil nutrients on the sequestration of plant defence chemicals by the specialist insect herbivore, Danaus plexippus [PDF]

open access: yes, 2015
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/110863/1/een12168 ...
Agrawal   +51 more
core   +1 more source

The conservatism of prairie pollinators according to experts and empiricism

open access: yesInsect Conservation and Diversity, EarlyView.
We derived ecological conservatism values for prairie pollinators using expert opinion and analysis of remnant fidelity. Expert values were potentially biased and struggled to differentiate between remnant and non‐remnant prairie sites Empirical values showed advantages for pollinator‐based site assessment and prioritization in prairie regions ...
Jason T. Bried   +3 more
wiley   +1 more source

Recent Forest Cover Loss in the Core Zones of the Monarch Butterfly Biosphere Reserve in Mexico

open access: yesFrontiers in Environmental Science, 2019
The Monarch Butterfly Biosphere Reserve (MBBR) in central Mexico was established in 2000 to protect monarch butterfly (Danaus plexippus) overwintering colonies and contribute to the conservation of the monarch migratory phenomenon.
José Juan Flores-Martínez   +6 more
doaj   +1 more source

Aggression Is Induced by Resource Limitation in the Monarch Caterpillar

open access: yesiScience, 2020
Summary: Food represents a limiting resource for the growth and developmental progression of many animal species. As a consequence, competition over food, space, or other resources can trigger territoriality and aggressive behavior.
Joseph Collie   +3 more
doaj   +1 more source

Effects of transgenic Bacillus thuringiensis corn pollen on the monarch butterfly [PDF]

open access: yes, 2003
Transgenic Bt corn has been widely planted in Iowa. This study considered whether plant tissues released by Bt corn (pollen and anthers) have an effect on monarch butterfly ...
Jesse, Laura C. H., Obrycki, John J.
core   +2 more sources

What do we know about insect responses to global change? A review of meta‐analyses on global change drivers

open access: yesInsect Conservation and Diversity, EarlyView.
We reviewed 75 meta‐analyses examining the effects of global change stressors on insects. We found that most global change stressors harm insects, with pesticides having the highest proportion of negative effects. Global change more frequently caused harm to higher trophic levels and beneficial insects, whereas herbivores were less often harmed.
Mayra C. Vidal   +11 more
wiley   +1 more source

Multimodal interactions in insect navigation [PDF]

open access: yes, 2020
Animals travelling through the world receive input from multiple sensory modalities that could be important for the guidance of their journeys. Given the availability of a rich array of cues, from idiothetic information to input from sky compasses and ...
Buehlmann, Cornelia   +2 more
core   +2 more sources

Native insect species should be selected for classroom rearings

open access: yesInsect Conservation and Diversity, EarlyView.
Rearing insects in the school classroom can build positive attitudes towards insects among schoolchildren, which is becoming increasingly important as insect populations decline. Identified frequent use of non‐native insect species, raising environmental and ethical concerns after classroom rearing ends.
Tereza Matulková, Tomáš Ditrich
wiley   +1 more source

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