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Fig. 4 in Joaquim José da Silva (c. 1755-1810): his life, natural history collecting activities, and involvement in the so-called first scientific expedition in the interior of Angola
Fig. 4. – Holotype of Rogeria brasiliensis J. Gay ex DC. (––– Pterodiscus brasiliensis (J. Gay ex DC.) Asch.) at P. [Silva s.n., P00435303; © Muséum national d'Histoire naturelle, Paris]
Fig. 19 in The life-history of Aprosthema tardum (KLUG, 1814) (Hymenoptera, Tenthredinoidea, Argidae)
Fig. 19: Aprosthema tardum. Apex of sawsheath (valvulae 3),
Early-life environmental conditions influence parasitism at adulthood and life-history of a cuckoo host
<p>Environmental conditions experienced by individuals early in life can extend into adult phenotypes with potential fitness consequences. Early life environmental effects can be relevant for hosts because bad early life conditions may impair host cognition increasing the risk of future parasitism or lowering parasite recognition. Here we provide a first test of this possibility by using data from a 16-year study of individually marked female magpie <i>Pica pica</i> hosts for which we know natal and adult environments, occurrence of costly great spotted cuckoo <i>Clamator glandarius</i> parasitism, egg discrimination ability and life history in detail. Females born in warmer years were more likely to be parasitized in adulthood and produced fewer offspring throughout their life. Egg discrimination behavior and lifespan of magpies were not influenced by the quality of natal environments. These results provide support for the idea that there exists annual environmental variation potentially promoting cohort effects in magpie hosts that may have an impact on cuckoo-host co-evolutionary dynamics.</p>
A role for sex determination genes in life history evolution? Doublesex mediates sexual size dimorphism in the gazelle dung beetle
<p>An organism's fitness depends strongly on its age and size at maturation. Although the evolutionary forces acting on these critical life history traits have been heavily scrutinized, the developmental mechanisms underpinning intraspecific variation in adult size and development time remain much less well understood. Using RNA interference, I here show that the highly conserved sex determination gene <i>doublesex </i>(<i>dsx</i>) mediates sexual size dimorphism (SSD) in the gazelle dung beetle <i>Digitonthophagus gazella</i>. Because <i>doublesex</i> undergoes sex-specific splicing and sex-limited isoforms regulate different target genes, this suggests <i>dsx</i> contributes to the resolution of intralocus sexual conflict in body size. However, these results contrast with previous studies demonstrating that <i>dsx </i>does not affect body size or SSD in <i>Drosophila</i>. This indicates that intraspecific body size variation is underlain by different developmental mechanisms in different insect lineages. Furthermore, although male <i>D. gazella</i> have a longer development time than females, sexual bimaturism was not affected by <i>dsx</i> expression knockdown. In addition, and in contrast to secondary sexual morphology, <i>dsx</i> did not significantly affect nutritional plasticity in life history. Taken together, these findings indicate that <i>dsx</i> signaling contributes to intraspecific life history variation but that <i>dsx</i>'s function in sexual dimorphism in life history differs among traits and species. More generally, these findings suggest that genes ancestrally tasked with sex determination have been coopted into the developmental regulation of life history traits and may represent an underappreciated mechanism of life history evolution.</p>
Maternal and paternal sugar consumption interact to modify offspring life history and physiology
<p class="MsoCommentText"><span>Intergenerational effects on offspring phenotypes occur in response to variation in both maternal and paternal nutrition. Because the combined maternal and paternal effects are rarely considered together however, their relative contributions, and the capacity for interactions between parental diets to shape offspring life history and physiology are not understood. To address this, we altered sucrose levels of adult fruit flies (<em>Drosophila melanogaster</em>) prior to mating, across two generations, producing parent-parent and parent-offspring combinations that were either matched or mismatched in dietary sucrose. We then measured lifespan, fecundity, body mass, and triglyceride levels in parents and offspring. We reveal complex non-additive interactions, that involve diets of each parent and offspring to shape offspring phenotypes, but the effects were generally not consistent with an adaptive response to parental diet. Notably, we find that interacting parental flies (sires and dams) lived longer when their sucrose treatments were matched, but they produced shorter-lived offspring. </span></p>
Removal of gut symbiotic bacteria negatively affects life history traits of the shield bug, Graphosoma lineatum
<p><span>Bacterial Symbionts play an important biological role in their host. <i>G. lineatum</i> harbor bacterial symbiont in the enclosed crypts of the midgut. It seems that the bacterial symbiont play important role in the insect. Therefore, in this study, the role of bacterial symbiont in the shield bug, <i>Graphosoma lineatum</i> (Heteroptera, Pentatomidae) was investigated. To do this symbiont elimination was performed using surface sterilization of the eggs. Then, we utilized <span>age-stage, two-sex life table analysis</span> to confirm the biological importance of bacterial symbiont in <i>G. lineatum</i>. According to our results symbiont removal had a significantly negative effect on the biology of the insect. These results clearly indicate this symbiont is essential for normal growth and reproduction.</span></p>
Figure 8 in A first comprehensive ecological approach on the highly endemic mygalomorph spider Mecicobothrium thorelli (Araneae: Mecicobothriidae): understanding life history traits to address future conservation issues
Figure 8. Body size of Mecicobothrium thorelli individuals of each category on the surveyed dates.
Figure 2 in A first comprehensive ecological approach on the highly endemic mygalomorph spider Mecicobothrium thorelli (Araneae: Mecicobothriidae): understanding life history traits to address future conservation issues
Figure 2. Study site, located in the Ventania system, south-west Buenos Aires, Argentina.
Figure 1. Mecicobothrium thorelli Holmberg, 1881 in A first comprehensive ecological approach on the highly endemic mygalomorph spider Mecicobothrium thorelli (Araneae: Mecicobothriidae): understanding life history traits to address future conservation issues
Figure 1. Mecicobothrium thorelli Holmberg, 1881, habitus. (a) Male. (b) Female.
Figure 3 in Antibiotics effects on the life history traits of Porcellionides pruinosus (Crustacea: Oniscidea)
Figure 3. Mean mass increase (mg) after (a) 1 month and (b) 3 p
Figure 2 in Antibiotics effects on the life history traits of Porcellionides pruinosus (Crustacea: Oniscidea)
Figure 2. Survival distribution function.
Figure 1 in Antibiotics effects on the life history traits of Porcellionides pruinosus (Crustacea: Oniscidea)
Figure 1. Survival (%) after (a) 1 month and (b) 3 months.
FIGURE 5 in Description of a model tardigrade Paramacrobiotus metropolitanus sp. nov (Eutardigrada) from Japan with a summary of its life history, reproduction and genomics
FIGURE 5. Dorsal cuticle apodemes (muscle attachments/cribriform areas)
FIGURE 7 in Life History of Erotylina jaspidea (Erichson, 1847) (Coleoptera, Erotyloidea Erotylidae, Erotylini)
FIGURE 7. Third instar larvae of Erotylina jaspidea (Erichson, 1847). Scale bar = 2 mm.
Supplementary material 1 from: Prigot-Maurice C, Depeux C, Paulhac H, Braquart-Varnier C, Beltran-Bech S (2022) Immune priming in Armadillidium vulgare against Salmonella enterica: direct or indirect costs on life history traits? In: De Smedt P, Taiti S, Sfenthourakis S, Campos-Filho IS (Eds) Facets of terrestrial isopod biology. ZooKeys 1101: 131-158. https://doi.org/10.3897/zookeys.1101.77216
Tables S1–S4, Figures S1–S3
Microbial life-history strategies mediate microbial carbon pump efficacy in response to N management
Open the record for dataset details and reuse information.
Fig. 1 in Trichodina diaptomi (Ciliophora: Peritrichia) from Two Calanoid Copepods from Botswana and South Africa, with Notes on its Life History
Fig. 1. Map of southern Africa indicating the two localities where Trichodina diaptomi Šrámek-Hušek, 1953 was collected: from the carapace of Metadiaptomus transvaalensis Nata River in Botswana (A) and M. meridianus in the Rustfontein Dam in South Africa (B).
Figure 3 in Accounting for variability in life-history traits for the definition of amphidromous goby fry fisheries closure periods
Figure 3. – Representation of the six to nine month fisheries closure periods ensuring that at least 50% and 75% of abundance and life history trait diversity for Sicyopterus lagocephalus and Cotylopus acutipinnis covered by the discontinuous and continuous alternatives. The months were those selected in the best ranked alternative in the MULTIMOORA analysis.
Figure 2 in Accounting for variability in life-history traits for the definition of amphidromous goby fry fisheries closure periods
Figure 2. – Proportion of the yearly abundance and variability of life-history traits of Sicyopterus lagocephalus (in purple) and Cotylopus acutipinnis (in yellow) covered by the best ranked alternatives (with a duration from five to 10 months) of the MULTIMOORA analysis. The best alternatives of discontinuous fisheries closure periods are displayed in panel A, the best alternatives of continuous periods in panel B.
Figure 4 in Life history traits and exploitation of Hampala barb (Hampala macrolepidota - Cyprinidae) in a subtropical reservoir (Lao PDR)
Figure 4. – Length-weight relationship of Hampala macrolepidota from the Nam Theun 2 Reservoir in Lao PDR between November 2015 and January 2017 according to sex.
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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.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.