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6 results for “reproductive caste”
Data from: Caste ratios affect the reproductive output of social trematode colonies
Intraspecific phenotypic diversification in social organisms often leads to formation of physical castes which are morphologically specialised for particular tasks within the colony. The optimal caste allocation theory argues that specialised morphological castes are efficient at specific tasks, and hence different caste ratios should affect the ergonomic efficiency, hence reproductive output of the colony. However, the reproductive output of different caste ratios has been documented only in few species of insects with equivocal support for the theory. The present study investigated whether the ratios of non-reproductive and reproductive morphs affect the reproductive output of a recently discovered social trematode, Philophthalmus sp., in which the non-reproductive members are hypothesized to be defensive specialists. Census of natural infections and a manipulative in-vitro experiment demonstrated a positive association between the reproductive output of trematode colonies and the ratio of non-reproductive to reproductive morphs in the presence of an intra-host trematode competitor, Maritrema novaezealandensis. On the contrary, without the competitor, reproductive output was negatively associated with the proportion of non-reproductive castes in colonies. Our findings demonstrate for the first time a clear fitness benefit associated with the non-reproductive castes in the presence of a competitor while illustrating the cost of maintaining such morphs in non-competitive situations. Although the proximate mechanisms controlling caste ratio remain unclear in this trematode system, the present study supports the prediction that the fitness of colonies is influenced by the composition of specialized functional morphs in social organisms, suggesting a potential for adaptive shifts of caste ratios over evolutionary time.
Data from: The behavior and reproductive physiology of a solitary progressive provisioning vespid wasp: evidence for a solitary-cycle origin of reproductive castes
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Data from: Caste ratios affect the reproductive output of social trematode colonies
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Data from: Gene expression patterns associated with caste and reproductive status in ants: worker-specific genes are more derived than queen-specific ones
Variation in gene expression leads to phenotypic diversity and plays a central role in caste differentiation of eusocial insect species. In social Hymenoptera, females with the same genetic background can develop into queens or workers, which are characterized by divergent morphologies, behaviors and lifespan. Moreover, many social insects exhibit behaviorally distinct worker castes, such as brood-tenders and foragers. Researchers have just started to explore which genes are differentially expressed to achieve this remarkable phenotypic plasticity. Although the queen is normally the only reproductive individual in the nest, following her removal, young brood-tending workers often develop ovaries and start to reproduce. Here, we make use of this ability in the ant Temnothorax longispinosus and compare gene expression patterns in the queens and three worker castes along a reproductive gradient. We found the largest expression differences between the queen and the worker castes (~2,500 genes), and the smallest differences between infertile brood-tenders and foragers (~300 genes). The expression profile of fertile workers is more worker-like, but to a certain extent intermediate between the queen and the infertile worker castes. In contrast to the queen, a high number of differentially expressed genes in the worker castes are of unknown function, pointing to the derived status of Hymenopteran workers within insects.
Data from: Gene expression patterns associated with caste and reproductive status in ants: worker-specific genes are more derived than queen-specific ones
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Insulin signaling in the long-lived reproductive caste of ants
GEO Series GSE209617. Harpegnathos saltator. 36 samples. Type: Expression profiling by high throughput sequencing.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.