Group Size Buffers against Energetic Stress in Honeybee Workers (Apis mellifera)

Stresses, Год журнала: 2023, Номер 3(2), С. 397 - 403

Опубликована: Апрель 4, 2023

Individuals of the Western honeybee species, Apis mellifera, live in large groups thousands worker bees, a queen, and few drones. Workers interact frequently with related individuals while performing various tasks. Although it is well understood why under which conditions sociality can evolve, consequences for living permanent are less understood. As solitary species become stressed when kept at high density, might be opposite obligate social species. Here, I use an experimental laboratory set-up to study effect varying group sizes on magnitude within-group variance stress responses towards energetic heat stress. While only weak difference was found response as function size, showed statistically significant positive relationship size glucose/trehalose ratio, marker The marker, hsp70AB gene expression, did not show any size. seem benefit from adaptations living, e.g., buffering against stress, especially higher density individuals. infections immune system activation isolated discussed.

Язык: Английский

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Bimodal alarm signals modulate responses to monomodal alarm signals in Camponotus modoc carpenter ants

Insect Science, Год журнала: 2024, Номер unknown

Опубликована: Май 15, 2024

Distressed western carpenter ants, Camponotus modoc, produce alarm pheromone and substrate-borne vibrations. The attracts nestmates but the effects of vibratory signals, or bimodal pheromonal are not known. Worker ants two congeners reportedly stand still ("freeze") run fast in response to engineered drumming vibrations inputted on plastic, many responses ant-produced signals wood have yet been investigated. Generally, orientating toward signalers under vertebrate predator attack seems maladaptive beneficial ant colonies. We tested hypotheses (1) that cause freezing, rapid running attraction nestmates, (2) modulate monomodal thereby possibly reducing predation risk. Laser Doppler vibrometry recordings revealed ants' readily propagate through nest lamellae, thus quickly inform mates perceived threats. With a speaker modified record deliver we obtained distressed Douglas fir veneer, bioassayed signal an arena with suspended veneer floor. In playback ran rapidly, froze, did approach signals. Exposed pheromone, frequently visited source. However, concurrently exposed both source less often spent more time "frozen." modulated seem adaptive reproductive fitness benefits be quantified.

Язык: Английский

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Streptomyces odontomachi sp. nov., a novel actinobacterium with antimicrobial potential isolated from ants (Odontomachus simillimus Smith, 1858)

The Journal of Antibiotics, Год журнала: 2024, Номер 77(11), С. 727 - 736

Опубликована: Авг. 9, 2024

Язык: Английский

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Acorn ant exhibits age-dependent induced defence in response to parasitic raids

Biology Letters, Год журнала: 2024, Номер 20(10)

Опубликована: Окт. 1, 2024

When risk is unpredictable, organisms may evolve induced defenses, which are activated after an indication of increased risk. In colonies with behavioural specialization, investment in defence not be uniformly beneficial among group members. Instead, it should depend on the individual’s likelihood participating defence. The ant Temnothorax longispinosus uses venom to defend against raids by social parasite americanus . We tested whether T. upregulate experiencing a raid, investigating relationship between volume and worker caste. Overall, raided had more per capita than unraided colonies. divided into castes, foragers while nurses did not. These results demonstrate that have chemical parasitic raids. However, instead this being deployed all workers, induction depends caste, therefore age, worker, implying plasticity production increases age. Since older insect workers tend perform riskier tasks, inducibility align increase expected death, especially if likely colony parasites younger workers.

Язык: Английский

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Morphology of the head-associated exocrine glands in Cornitermes cumulans with the description of a novel gland for the worker caste

Tissue and Cell, Год журнала: 2024, Номер 93, С. 102688 - 102688

Опубликована: Дек. 15, 2024

Язык: Английский

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