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484 results for “reproductive biology”
Fig. 4 in Reproductive biology of the peacock bass Cichla piquiti (Perciformes: Cichlidae), an exotic species in a Neotropical reservoir
Fig. 4. Percentage of sexually mature males (solid bar) and females (empty bar) of Cichla piquiti collected during the period from December 2004 to November 2005. Sample size is given above bars.
Fig. 2 in Reproductive biology of the peacock bass Cichla piquiti (Perciformes: Cichlidae), an exotic species in a Neotropical reservoir
Fig. 2. Male and female gonadosomatic index (GSI) ± SD of Cichla piquiti and environmental variables ± SD collected at the Itumbiara Reservoir between December 2004 and November 2005 [GSI male (square), GSI female (triangle); (a) water temperature, (b) accumulated rainfall, (c) reservoir level].
Fig. 7 in Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil
Fig. 7. Relative frequency distribution of caudal filament depth levels for Brachyhypopomus draco males. Caudal filaments depth Level 1 = from 0 to 1.5%; Level 2 = from 1.51% to 2.5%; Level 3 = from 2.51% to 3.50%.
Fig. 1. Sample places location. Points number 1, 3, 7, 12, 14, 18 and 20 in Reproductive biology of Rhaphiodon vulpinus (Ostariophysi: Cynodontidae) in the Tocantins River Basin, Brazil
Fig. 1. Sample places location. Points number 1, 3, 7, 12, 14, 18 and 20 = Tocantins river; 2 = Sono river; 4 = Lajeadinho river; 5 = Santa Luzia river; 6 = Mangues river; 8 = Areias river; 9 = Crixás river; 10 = Capivara Lagoon; 11 = Manuel Alves river; 13 = São Valério river; 15 = Santa Tereza river; 16 = Dionízio Lagoon; 17 = Água Branca Lagoon; 19 = Paranã river and 21 = Bonita Lagoon.
Fig. 5 in Reproductive biology of Rhaphiodon vulpinus (Ostariophysi: Cynodontidae) in the Tocantins River Basin, Brazil
Fig. 5. Monthly Tocantins River water level (m) variation. Vertical bars = minimum and maximum values; point = mean values.
Fig. 2 in Reproductive biology of Rhaphiodon vulpinus (Ostariophysi: Cynodontidae) in the Tocantins River Basin, Brazil
Fig. 2. Distribution of males and females of Rhaphiodon vulpinus, by standard length class. Asterisks indicate significant differences in sex ratio.
Fig. 4 in Reproductive biology of Rhaphiodon vulpinus (Ostariophysi: Cynodontidae) in the Tocantins River Basin, Brazil
Fig. 4. Monthly variation of the frequency of gonadal maturity stages (a and b), mean gonadosomatic index (c and d), and index of reproductive activity (e and f) for females (a, c, e) and males (b, d, f) of Rhaphiodon vulpinus.
Figure 9 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 9. Dissected male reproductive accessory sex glands from (a) Paramelomys rubex, (b) Uromys caudimaculatus, and (c) Hyomys goliath. Note large sacculated seminal vesicles in (a) and (b) with coagulating glands on their inner curvatures; H. goliath has rather different gross morphology of seminal vesicles and coagulating glands and strikingly large preputial glands (PG). SV = seminal vesicles, CG = coagulating glands, P = prostate glands, AG = ampullary glands, BU = bulbourethral glands, PG = preputial glands, and DD = ductus deferens. Scale bars a–c = 10 mm.
Figure 8 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 8. Scanning electron micrographs of spermatozoa from (a) Lorentzimys nouhuysi, (b) Mammelomys lanosus, (c) Mammelomys rattoides, (d) Coccymys shawmayeri, (e) Xenuromys barbatus, and (f) Rattus niobe. Scale bars a = 1.5 µm, b–f = 2.5 µm.
Figure 6 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 6. Scanning electron micrographs of spermatozoa from (a) Pseudohydromys pumehanae,(b) Melomys lutillus,(c) Paramelomys platyops, (d) Uromys anak, (e) Uromys caudimaculatus, and (f) Chiruromys lamia. AH = apical hook and VPs = ventral processes of sperm head. Scale bars a = 2 µm, b = 1.3 µm, c = 2 µm, d = 1 µm, e and f = 2 µm.
Figure 3 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 3. Boxplot of relative testes mass (g) for species in the divisions (H) Hydromys, (U) Uromys, (P) Pogonomys, (M) Mallomys, and (R) Rattus.
Figure 7 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 7. Scanning electron micrographs of spermatozoa from (a) Chiruromys vates, (b) Pogonomys loriae with inset a fluorescent LM stained with DAPI showing nucleus, (c) Pogonomys macrourus, (d) Pogonomys sylvestris, (e) Hyomys goliath with arrow indicating ventral spike on sperm head, and (f) Mallomys aroaensis inset fluorescent LM stained with DAPI showing nucleus. AH = apical hook and VPs = ventral processes of sperm head. Scale bars a–d = 0.7 µm, e and f = 1.4 µm.
Figure 4 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 4. Boxplot of maximum sperm tail length (µm) for species in the divisions (H) Hydromys, (U) Uromys, (P) Pogonomys, (M) Mallomys, and (R) Rattus.
Figure 2 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 2. Boxplot showing maximum numbers of fetuses across the species in the divisions (H) Hydromys, (U) Uromys, (P) Pogonomys, (M) Mallomys, and (R) Rattus.
Figure 1 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 1. Boxplot showing nipple numbers for species in the divisions (H) Hydromys, (U) Uromys, (P) Pogonomys, (M) Mallomys, and (R) Rattus.
Figure 5 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 5. Light micrographs of spermatozoa from (a) Leptomys elegans, (b) Melomys rufescens, (c) Pogonomys championi, (d) Pogonomys loriae, (e) Abeomelomys sevia, (f) Anisomys imitator, and (g) Rattus steini. Scale bars a = 4 µm, b–g = 5 µm.
Fig. 2 in Ex-situ conservation of the critically endangered swamp forest crab Parathelphusa reticulata Ng, 1990 (Decapoda: Brachyura: Gecarcinucidae): observations on its reproduction and biology in captivity
Fig. 2. Top view of captive conditions of a, adult crab (CW: 30 mm); b, crablet (CW: 4 mm); c, juvenile crab (CW: 15 mm); d, Setup for pairing individuals. Photographs: Dian Alisha Binte Misba.
Fig. 4 in Ex-situ conservation of the critically endangered swamp forest crab Parathelphusa reticulata Ng, 1990 (Decapoda: Brachyura: Gecarcinucidae): observations on its reproduction and biology in captivity
Fig. 4. Growth of captive Parathelphusa reticulata (F1 generation) over 52 weeks (N = 20). Vertical bars indicate standard deviations.
FIGURE 3 in The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology
FIGURE 3 Girardia tigrina from Liguria. Photomicrographs of hyperplasic ovaries and testes. A. ZMA V.Pl. 7283.1, hyperplasic ovaries located behind the brain; B. ZMA V.Pl. 7283.1, ectopic hyperplasic ovarian masses located at the level of the copulatory apparatus; C. ZMA V.Pl. 7283.1, magnification of hyperplasic ovaries, with oocytes at different stages of maturation; D. ZMA V.Pl. 7283.1, mature testes with sperm.
FIGURE 1 Girardia tigrina. A in The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology
FIGURE 1 Girardia tigrina. A. Geographic range of allochthonous sexual populations (filled circles) and populations with sexualized animals (triangles and asterisk) in the Western Palaearctic; asterisk: population from Liguria investigated in the present study. B. Aquatic plants as preferential shaded microhabitat in a tank at the Botanical Garden of the University of Genoa, Liguria. C. Habitus of a living ex-fissiparous specimen of the Ligurian population. Scale bar not available.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.