Results 91 to 100 of about 4,833 (212)

Acute Toxicity of Selected Insecticides on Apis mellifera and Ceratina smaragdula: Laboratory and Field Assessments

Sociobiology
Pollinators are vital to agricultural productivity, yet their populations are declining due to anthropogenic disturbances, including pesticide use. This study evaluated the acute toxicity of selected insecticides to two bee species, the honey bee (Apis ...
Fayyaz Hussain, Mudssar Ali, Fawad Zafar Ahmad Khan, Ahmad Ibrahim Jalali   +3 more
doaj   +1 more source

Susceptibility of solitary bees to agrochemicals highlights gaps in bee risk assessment

Environmental Toxicology and Pharmacology
Ground-nesting solitary bees are the most abundant bee species in the xeric areas of the world, but the effects of agrochemicals on them have been little studied. Herein, we evaluated the topical toxicity of an insecticide, a herbicide, and an essential oil on Mediterranean ground-nesting bees (Andrena impunctata, A. nigroolivacea, A.
Roberto Catania, Rodrigo Cupertino Bernardes, Marta Bonforte, Lívia Maria Negrini Ferreira, Maria Augusta Pereira Lima, Dariusz Teper, Lucia Zappala, Gaetana Mazzeo   +7 more
openaire   +3 more sources

Spinoza on Humans as Social Animals

European Journal of Philosophy, EarlyView.
Abstract Spinoza repeatedly suggests that humans are set apart from other animals by their rational and moral abilities. Yet he disparages the traditional definition of the human as a ‘rational animal’ and several of his other views suggest that these abilities are not sufficient by themselves to characterize human nature.
Ruben Noorloos
wiley   +1 more source

Why we Should Study Solitary Species to Understand the Costs of Group‐Living

Ethology, EarlyView.
It's easier to measure the benefits than the costs of a trait. Solitary species benefit by avoiding the costs of group living. Thus, measuring benefits of solitary living informs us about the costs of group living. ABSTRACT While for decades behavioral ecologists have studied the benefits of group living, measuring its costs has been more difficult. It
Lindelani Makuya, Carsten Schradin
wiley   +1 more source

Leaders Are Somethin' Else: Behavioural Variation Associated With Roles During Tandem Running Recruitment

Ethology, EarlyView.
In this study, we found moderate to strong repeatabilities in behavioural variables measuring the personality traits: activity, aggressiveness and exploration. Similarly, the probability of acting as a leader during tandem running in an emigration event was moderately (R = 0.469) repeatable.
Maria Eduarda Lima Vieira, Lucia C. Neco, Gabrielle Winandy, Nicolas Châline, Heiko G. Rödel   +4 more
wiley   +1 more source

Not all crickets are equal: selective shrike predation highlights the conservation value of diverse arthropod communities to grassland birds

Ibis, EarlyView.
Understanding dietary preferences and prey selection is pivotal for interpreting the ecology and conservation needs of threatened species. We investigated the diet composition and prey selection of the Red‐backed Shrike Lanius collurio in a montane grassland of the central Italian Apennines, with special regard to sex‐related differences and the ...
Leonardo Ancillotto, Sauro Giannerini, Matteo Bianchi, Giulia Santalmasi, Marco Zaccaroni, Tommaso Lipparelli, Matteo Annessi, Jacopo Martino, Emiliano Mori   +8 more
wiley   +1 more source

Use of Social Bees and Solitary Bees as Bioindicators of Environmental Contamination

International Journal For Multidisciplinary Research
With an emphasis on the biology of bee nesting, their ecological functions, and their efficacy in determining heavy metal pollution, this review paper summarises current research on bees as bioindicators of environmental contamination. Review brought attention to the solitary nesting behaviours of species such as Epanthidium tigrinum and Megachile ...
Karan K. Deokar -, Saurabh S. Joshi -
openaire   +1 more source

Concentrated vulnerabilities in bees: Diet specialists have smaller geographic ranges

Insect Conservation and Diversity, EarlyView.
Niche breadth theory predicts a positive association between range size and diet breadth, which could concentrate risk among specialists, but this is not well established for bees. Using global occurrence data (range size) and natural history collection‐derived pollen data (diet breadth), we compared these traits in 633 species from six families and ...
Charles N. Thrift, Thomas J. Wood, An Bui, Hillary S. Young, Katja C. Seltmann   +4 more
wiley   +1 more source

Is urbanisation a barrier to genetic diversity in the solitary specialist bee, Melissodes druriellus?

Insect Conservation and Diversity, EarlyView.
Bees are integral pollinators commonly found in and supported by urban green spaces; however, their eco‐evolutionary response to urbanisation varies interspecifically. While several studies have explored the population and landscape genetics of bees in response to urbanisation, few have examined solitary or specialist species which may be more ...
Anthony C. Ayers, Sargon Yousefian Dezag Tekkie, S. Eryn McFarlane, Sandra M. Rehan   +3 more
wiley   +1 more source

Fragmented grasslands in different landscape structures provide different opportunities for cavity‐nesting Hymenoptera

Insect Conservation and Diversity, EarlyView.
Grassland fragmentation effects on cavity‐nesting Hymenoptera are habitat‐specific. Isolated sand steppe fragments are associated with higher brood‐cell abundance. In loess steppes, higher flower frequency increases bee brood‐cell production and parasitoid activity. Abstract The global decline in insects threatens ecosystem functioning, but the drivers
Edina Török, Róbert Gallé, Dávid Korányi, Zsolt Józan, Tamás Lakatos, Katalin Szitár, Péter Batáry   +6 more
wiley   +1 more source