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47 results for “Reproductive physiology”
Fig. 3 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 3. Ovum (a) and germ of female studied during diapause of pregnancy: b — 3-blastomers zygote; c — blastula.
Fig. 2 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 2. Baculate rods of copulative organ of males: a — in age of one year; b — two years; c — in adulthood.
Fig. 4 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 4. The uterus of pregnant female, studied 31 December; in the right horn the highlighted location of blastula.
Fig. 7 in Morphology of the female reproductive system and physiological age-grading of Megamelus scutellaris (Hemiptera: Delphacidae), a biological control agent of water hyacinth
Fig. 7. Number of eggs ovulated by adult females of Megamelus scutellaris correlated by a) age (days) and b) collar length (mm). The solid line represents the linear relationship between variables and the dashed lines is the 95% confidence interval (n = 15; P = 0.001 and r = 0.778).
Fig. 6. The 3 in Morphology of the female reproductive system and physiological age-grading of Megamelus scutellaris (Hemiptera: Delphacidae), a biological control agent of water hyacinth
Fig. 6. The 3 parous classes of Megamelus scutellaris. The P1 class (a and b) is characterized by the presence of follicular relics, which may not be present in some or all ovarioles, may be light in coloration and may or may not encircle the base of the ovariole. The follicular relics do not occur at high enough densities to cause an expansion or bulging. The collar may or may not be visible and does not extend past the follicular relic accumulation area. In the P2 class (c and d) follicular relics are present in all ovarioles and at high enough densities to cause bulging. They are distinctly yellow in coloration and relatively darker in comparison to those found in the P1 class. The collar is easily seen and typically extends past the follicular accumulation area. In the P3 class (e and f) follicular relics are variable, may or may not be in high enough densities to cause bulging, and typically completely encircle the base. The collar length easily surpasses the follicular relic accumulation area.
Fig. 4 in Morphology of the female reproductive system and physiological age-grading of Megamelus scutellaris (Hemiptera: Delphacidae), a biological control agent of water hyacinth
Fig. 4. Follicular relic formation and appearance in the distal area of an ovariole and anterior lateral oviduct (loa) with the germinal vesicle (gv), oocyte with yolk (oy), follicular epithelium (fe) beginning to slough off into the ovariole base (as shown by the arrow), follicular relics (fr), and collar in Megamelus scutellaris. Note the granular appearance of follicular relics having a high enough density to begin to expand or bulge the sides of the lateral oviduct.
Fig. 2 in Morphology of the female reproductive system and physiological age-grading of Megamelus scutellaris (Hemiptera: Delphacidae), a biological control agent of water hyacinth
Fig. 2. Photomicrographs of the female reproductive system of Megamelus scutellaris showing a) distal portion of the ovary showing the distal lateral oviduct (lop), common oviduct (co), bursa copulatrix (b), and spermatheca/spermathecal gland (spt and sptg, respectively), and b) close-up of ovariole morphology (b) showing the anterior lateral oviduct (loa), germarium (g), vitellarium (v), and terminal filament (tf).
Fig. 1 in Morphology of the female reproductive system and physiological age-grading of Megamelus scutellaris (Hemiptera: Delphacidae), a biological control agent of water hyacinth
Fig. 1. Photomicrograph of the female reproductive system of Megamelus scutellaris showing ovaries (ov), common oviduct (c), anterior and posterior portions of the lateral oviduct (loa and lop, respectively), and overall structure of a follicle including the germinal vesicle (gv) and oocyte with yolk (oy).
Fig. 3 in Morphology of the female reproductive system and physiological age-grading of Megamelus scutellaris (Hemiptera: Delphacidae), a biological control agent of water hyacinth
Fig. 3. Photomicrographs of the female reproductive system of Megamelus scutellaris showing a) close-up of the distal portion of an ovariole showing the anterior lateral oviduct (loa), follicular epithelium (fe), ovariole sheath (os), germinal vesicle (gv), oocyte with yolk (oy), and collar (c), and b) distal portion of an ovariole showing a newly ovulated egg (e) into the anterior lateral oviduct (loa), ovary (ov), ovariole (lov), and the collar (c).
Fig. 5. The 3 in Morphology of the female reproductive system and physiological age-grading of Megamelus scutellaris (Hemiptera: Delphacidae), a biological control agent of water hyacinth
Fig. 5. The 3 nulliparous stages of Megamelus scutellaris. a) N1—Note the lack of differentiation in the vitellarium (v) and large size of the germarium (g) in comparison to the vitellarium. b) N2—In this stage the ovarioles are fully differentiated, no fully mature follicles, and no follicular relics. c and d) N3—In this stage the ovarioles are fully differentiated, no follicular relics are present, and at least 2 follicles are mature and ready to be ovulated as indicated by darkening of the interior of the oocyte by yolk deposition.
Fig. 4 in Social and reproductive physiology and behavior of the Neotropical cichlid fish Cichlasoma dimerus under laboratory conditions
Fig. 4. Reproductive phases: a) Female laying eggs while male waits to fertilize them. This process is then repeated; b) Spawn on a flat dark stone. Generally between 400 - 800 eggs are laid, depending on female size; c) Female guarding the eggs while male attacks an intruder male. Generally one of the parents remains guarding the fry while the other feeds or defends the territory; d) Female fanning non swimming fry after transferring them to a previously dug pit; fry hatched 3 days after fertilization; e) Male guarding free swimming fry (8 days after fertilization); parents seem to attract the fry by shaking its dark pelvic fin.
Fig. 2 in Social and reproductive physiology and behavior of the Neotropical cichlid fish Cichlasoma dimerus under laboratory conditions
Fig. 2. Body color patterns associated with different social status; a) Schematic representation of the main features of Cichlasoma dimerus color pattern. A: red eye blotch; B: preopercular blotch, C: anterior longitudinal line; D: mid trunk blotch; E: posterior longitudinal line; F: peduncular blotch; G: dorsal transversal bars; H: ventral transversal bars. These features may "turn on" or "off" in different conditions; b) Gregarious individuals; c) Reproductive Territorial male (RT); d) Reproductive Territorial female. e) Non Reproductive Territorial male (nRnT); f) Non Reproductive non Territorial (nRnT) individual. Scale bar = 1 cm
Fig. 1 in Social and reproductive physiology and behavior of the Neotropical cichlid fish Cichlasoma dimerus under laboratory conditions
Fig. 1. Distribution of different social status fish on the experimental aquaria: a) Picture of the experimental aquaria; b) Schematic representation. Abbreviations of social statuses used: nRnT = non Reproductive non Territorial individuals; nRT = non Reproductive Territorial individual; RT = Reproductive Territorial individual. For a detailed description of these social statuses see Table 3.
Data - Krieg et al. Reproductive phases coincide with changes in morphology and photosynthetic physiology in an endangered cycad species
<p>Summary of the data set used in Krieg et al. (2023) Reproductive phases coincide with changes in morphology and photosynthetic physiology in an endangered cycad species. Conservation Physiology.</p>
Reproductive experience drives changes in behavior and physiology in male California mice (Peromyscus californicus)
Open the record for dataset details and reuse information.
The Burden of Reproduction in Lizards: Changes in Respiratory Physiology Associated with Reduced Lung Volume at the Sevilleta National Wildlife Refuge (2007-2008)
Previous morphological work on lizards suggests that the volume of growing eggs may result in a significant decrease in lung volume during gravidity. Iguanid lizard lungs are located within continuous thoracic and abdominal cavities and are highly distensible. Because of their distensible nature and lack of a diaphragm, both naturally occurring and introduced structures within the abdominal and thoracic cavities (i.e. organs, food, eggs) compress them and potentially reduce available lung volume for gas exchange. During reproduction, this decrease comes at a time of increased energetic demands, due to the cost of provisioning eggs and the physical burden of transporting the extra mass before laying. This means that females must increase the oxygen/carbon dioxide exchange with effectively smaller lung capacity than when they are not reproductive. Therefore, the way species compensate for this decrease affects performance, and ultimately the survival of individuals and their offspring.
Data from: Physiological predictors of reproductive performance in the European Starling (Sturnus vulgaris)
Background: It is widely assumed that variation in fitness components has a physiological basis that might underlie selection on trade-offs, but the mechanisms driving decreased survival and future fecundity remain elusive. Here, we assessed whether physiological variables are related to workload ability or immediate fitness consequences and if they mediate future survival or reproductive success. We used data on 13 physiological variables measured in 93 female European starlings (Sturnus vulgaris) at two breeding stages (incubation, chick-rearing), for first-and second-broods over two years (152 observations). Results: There was little co-variation among the physiological variables, either in incubating or chick-rearing birds, but some systematic physiological differences between the two stages. Chick-rearing birds had lower hematocrit and plasma creatine kinase but higher hemoglobin, triglyceride and uric acid levels. Only plasma corticosterone was repeatable between incubation and chick-rearing. We assessed relationships between incubation or chick-rearing physiology and measures of workload, current productivity, future fecundity or survival in a univariate manner, and found very few significant relationships. Thus, we next explored the utility of multivariate analysis (principal components analysis, Mahalanobis distance) to account for potentially complex physiological integration, but still found no clear associations. Conclusions: This implies either that a) birds maintained physiological variables within a homeostatic range that did not affect their performance, b) there are relatively few links between physiology and performance, or, more likely, c) that the complexity of these relationships exceeds our ability to measure it. Variability in ecological context may complicate the relationship between physiology and behavior. We thus urge caution regarding the over-interpretation of isolated significant findings, based on single traits in single years, in the literature.
Population density does not affect seasonal regulation of reproductive physiology in male water voles
<p>Most small rodent species display cyclic fluctuations in their population density. The mechanisms behind these cyclical variations are not yet clearly understood. Density-dependent effects on reproductive function could affect these population variations. The fossorial water vole ecotype, Arvicola terrestris, undergoes a multi-year cycle dynamic with outbreak peaks. Here, we monitored different water vole populations over three years, in spring and autumn, to evaluate whether population density be related to male reproductive physiology. Our results show an effect of season and inter-annual factors in testes mass, plasmatic testosterone level, and androgen-dependent seminal vesicles mass. By contrast, population density does not affect any of these parameters, thus suggesting a lack of modulation of population dynamics of population density.</p>
Fig. 7 in Social and reproductive physiology and behavior of the Neotropical cichlid fish Cichlasoma dimerus under laboratory conditions
Fig. 7. Semiquantitative analysis of pituitary hormone content
Fig. 5. Reproductive territorial male attacking a in Social and reproductive physiology and behavior of the Neotropical cichlid fish Cichlasoma dimerus under laboratory conditions
Fig. 5. Reproductive territorial male attacking a non reproductive territorial male.
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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.