Results 1 to 10 of about 855 (146)

Two Divergent Genetic Lineages within the Horned Passalus Beetle, Odontotaenius disjunctus (Coleoptera: Passalidae): An Emerging Model for Insect Behavior, Physiology, and Microbiome Research [PDF]

open access: yesInsects, 2019
The horned passalus (Odontotaenius disjunctus) is one of the most extensively studied saproxylic beetles in the eastern United States. For several decades this species has been the subject of investigations into the behaviors associated with subsociality
Ryan C. Garrick   +3 more
doaj   +6 more sources

The Heartrate Reaction to Acute Stress in Horned Passalus Beetles (Odontotaenius disjunctus) is Negatively Affected by a Naturally-Occurring Nematode Parasite

open access: yesInsects, 2017
There are many events in the lives of insects where rapid, effective stress reactions are needed, including fighting conspecifics to defend territories, evading predators, and responding to wounds.
Andrew K Davis
exaly   +5 more sources

The Brachypterous Species of Passalus (Pertinax) (Coleoptera: Passalidae), with the Description of a New Species from Sierra Nevada de Santa Marta, Colombia [PDF]

open access: yesNeotropical Entomology, 2022
Brachypterism is a common condition cited in passalid beetles, mainly associated to species with strictly montane distributions. In the New World Passalids, brachypterism has been reported especially in the tribe Proculini, for which almost all genera ...
Larry Jiménez-Ferbans   +2 more
exaly   +3 more sources

Two new species of Passalus Fabricius (Coleoptera: Passalidae) from the western Brazilian Amazon with comments on the taxonomic limits of the subgenera [PDF]

open access: yesPapéis Avulsos de Zoologia, 2020
Passalus Fabricius, 1792 is the largest genus of Passalidae and presents great diversity in South America, mainly in the Amazon region. Currently this complex and heterogeneous genus is subdivided into three subgenera: P.
Marcus Bevilaqua   +1 more
doaj   +5 more sources

The sicker the better: nematode-infected passalus beetles provide enhanced ecosystem services [PDF]

open access: yesBiology Letters, 2019
There is growing appreciation for the role that parasites have in ecosystems and food webs, though the possibility that they could improve an ecosystem service has never been considered.
Andrew K Davis
exaly   +3 more sources

Lonely Beetles Lose Weight: Absence of Conspecific Sounds Negatively Impacts Body Mass in Larval and Adult Passalus Beetles

open access: yesStresses
For animals that typically live in groups or family units, being isolated from their conspecifics can be stressful. Horned passalus beetles (genus Odontotaenius), inhabit decaying logs in forests in the eastern United States.
Andrew K Davis
exaly   +4 more sources

Contribuição ao conhecimento da bionomia de Passalus convexus Dalman, 1817 e Passalus latifrons Percheron, 1841 (Coleoptera: Passalidae) [PDF]

open access: yesActa Amazonica, 1988
Coleópteros da família Passalidae, com distribuição pantropical, parecem contribuir, pelo menos em parte, para a reciclagem dos nutrientes nas florestas, facilitando a penetração de umidade e de microorganismos decompositores no interior dos troncos ...
Cláudio R. V. Fonseca
exaly   +4 more sources

Passalidae (Coleoptera, Scarabaeoidea) from the Caribbean coast of Colombia: synopsis, key, and new species description [PDF]

open access: yesZooKeys, 2023
Bess beetles (Passalidae) are a subsocial family of Coleoptera with approximately 1000 known species of saproxylophagous diet and pantropical distribution, with few extratropical species. Because of their high levels of endemism (especially in mountains),
Larry Jiménez-Ferbans   +4 more
doaj   +4 more sources

The Passalidae (Coleoptera, Scarabaeoidea) from Bolivia, with the descriptions of three new species [PDF]

open access: yesZooKeys, 2019
Employing data from literature, examination of specimens in collections, and a field trip, a list of the species of Passalidae from Bolivia is elaborated. A total of 38 species is reported, including new records of Passalus inca Zang, 1905 and P. lunaris
Larry Jiménez-Ferbans   +2 more
doaj   +4 more sources

Sex-specific effects of a parasite on stress-induced freezing behavior in a natural beetle-nematode system. [PDF]

open access: yesPLoS ONE, 2023
Some animals react to predation threats or other stressors by adopting a freezing posture in an attempt to avoid detection, and the duration of this behavior usually corresponds with individual personality, such that timid individuals freeze longer ...
Andrew K Davis   +3 more
doaj   +2 more sources

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