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30 results for “fish maturity”
Figure 1 in The developmental variations of the sagitta otolith in the young and mature male of a hermaphrodite polynemidae fish, Eleutheronema tetradactylum (Shaw, 1804)
Figure 1. Schematic diagram of a typical sagitta (right) showing various characteristics on the medial surface of Eleutheronema tetradactylum. Abbreviation here and in Fig. 2: A, anterior side; Ar, antirostrum; Cbl, caudal bulb; Cc, caudal colliculum; Ci, crista inferior; Co, concretion; Cs, crista superior; D, dorsal side; Dd, dorsal depression; Os, ostium; P, posterior side; R, rostrum; V, ventral side; zigzag arrow, growth stripes; arrow head, excisura major; arrow, mid-dorsal groove; double arrow, width between posterior caudal end and the postero-ventral margin, asterisk, 'V'-shaped ridge at the junction of ostium and cauda.
Figure 7 in The developmental variations of the sagitta otolith in the young and mature male of a hermaphrodite polynemidae fish, Eleutheronema tetradactylum (Shaw, 1804)
Figure 7. Relationships of the body size groups with different sagitta constituents: (A) cauda width (CW); (B) length of caudal bulb (Cbl); (C) width between posterior caudal end and the postero-ventral margin (CPVM); (D) width between dorsal margin to crista superior (CrsD).
Data from: Minimum size limits and the reproductive value of numerous, young, mature female fish
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Heterogeneous genetic basis of age at maturity in salmonid fishes
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Data from: Temperature-related variation in growth rate, size, maturation, and lifespan in a marine herbivorous fish over a latitudinal gradient
1. In ectotherms, growth rate, body size, and maturation rate co-vary with temperature, with the direction and magnitude of variation predicted by the Temperature-Size Rule (TSR). Nutritional quality or availability of food, however, may vary over latitudinal gradients, resulting in ambiguous effects on body size and maturation rate. The Temperature-Constraint Hypothesis (TCH) predicts that marine herbivorous ectotherms are nutritionally compromised at latitudes exceeding 30o. This provides an opportunity to resolve the contrasting demographic responses of ectotherms to variation in temperature and nutritional status over latitudinal gradients. 2. This study uses analysis of demographic rates to evaluate the predictions of the TSR in a marine herbivorous ectotherm sampled over a significant latitudinal gradient. 3. The direction and magnitude of demographic variation was established in the marine herbivorous fish, Odax pullus (the butterfish), and compared with that of a phylogenetically related but trophically distinct species, the carnivorous Notolabrus fucicola (the banded wrasse). Both species were sampled at three locations across the length of New Zealand covering latitudes between 35oS and 49oS. Growth rate, mean size-at-age, age- and size-at-maturity, lifespan, and abundance were estimated for each species at each location. 4. Demographic traits of both taxa varied with latitude. Both species showed slower initial growth rates, and matured later at a larger body size at higher latitudes than populations sampled at lower latitudes. In addition, abundances increased significantly at higher latitudes in both species. 5. These results were consistent with the TSR but not the TCH, confirming that nutritional ecology (herbivore vs. carnivory) did not determine demographic patterns over a biologically significant latitudinal gradient. Results from this study suggest that the absence of herbivorous reef fishes from the higher latitudes of the northern hemisphere may not reflect a general physiological mechanism as suggested by the TCH, and highlights the need to clarify the evolutionary histories of the marine biotas of each hemisphere.
Data from: Temperature-related variation in growth rate, size, maturation, and lifespan in a marine herbivorous fish over a latitudinal gradient
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Data from: Growth potential can affect timing of maturity in a long-lived semelparous fish
Many diadromous fishes such as salmon and eels that move between freshwater and the ocean have evolved semelparous reproductive strategies, but both groups display considerable plasticity in characteristics. Factors such as population density and growth, predation risk or reproduction cost have been found to influence timing of maturation. We investigated the relationship between female size at maturity and individual growth trajectories of the long-lived semelparous European eel, Anguilla anguilla. A Bayesian model was applied to 338 individual growth trajectories of maturing migration-stage female silver eels from France, Ireland, the Netherlands, and Hungary. The results clearly showed that when growth rates declined, the onset of maturation was triggered, and the eels left their growth habitats and migrated to the spawning area. Therefore, female eels tended to attain larger body size when the growth conditions were good enough to risk spending extra time in their growth habitats. This flexible maturation strategy is likely related to the ability to utilize diverse habitats with widely ranging growth and survival potentials in the catadromous life-history across its wide species range.
Data from: Growth potential can affect timing of maturity in a long-lived semelparous fish
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Data from: Accurate estimates of age at maturity from the growth trajectories of fishes and other ectotherms
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A time series of the pituitary gland transcriptome during development and sexual maturation in the model fish medaka
GEO Series GSE179598. Oryzias latipes. 84 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.
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.