Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
188
datasets available to search
ShareScore release 0.7.1
Dataset results
188 results for “reproductive strategy”
Climate warming and temporal variation in reproduction strategies in the endangered meadow viper
<p>Here, we used more than three decades of mark-recapture data in a natural population of the endangered meadow viper (<i>Vipera ursinii ursinii</i>) to unravel the patterns of temporal variation in reproductive traits, local climatic determinants of inter-annual variation in reproduction and the potential buffering effects of life cycle on population growth rate. We found significant inter-annual variation in annual body growth, gestation length, post-parturition body condition, clutch success and offspring traits at birth, but little temporal effects in reproductive effort. Temperature during gestation was the most influential local climatic determinant by shortening gestation length, and increasing clutch success and post-parturition body condition. Neither air humidity nor insolation was found to influence reproduction.</p>
Figure 2. a, coelomic brood juveniles from a in Observations of reproductive strategies for some dendrochirotid holothuroids (Echinodermata: Holothuroidea: Dendrochirotida)
Figure 2. a, coelomic brood juveniles from a female Staurothyone inconspicua (Bell) showing mid-body constrictions and variable sizes (F58613; photo by CR). b, coelomic juvenile of S. inconspicua showing a deep mid-body constriction (F58456; CR). c, coelomic juveniles from a female Parathyonidium Heding species (F84983; CR). d, many small (F58592, late October; CR) and one large (F76371, late December; CR) coelomic brood juveniles of Neoamphicyclus materiae O'Loughlin. e, single large coelomic juvenile of N. materiae (F58606; late December; LA). f, invaginated body wall marsupium of Cladodactyla crocea (Lesson) with single remaining egg/embryo (F106967; 27 mm long; LA).
Figure 1 in Observations of reproductive strategies for some dendrochirotid holothuroids (Echinodermata: Holothuroidea: Dendrochirotida)
Figure 1. Fissiparity by Cucuvitrum rowei O'Loughlin and O'Hara. a, peristaltic contractions in live specimen (F157401; about 25 mm long; photo by JE). b, 3 live individuals resulting from fissiparity (F157401; JE). c, live specimen showing regenerating anal end (F157419; 4 mm long; LA). d, preserved specimens showing evidence of fissiparity, with fully developed tentacles and ring and lacking internal soft organs (upper), with developing tentacles and ring (lower) (F161501; LA).
Figure A2 in A student-based expansion of the strategies of reproduction in fish (STOREFISH) database to 288 North American freshwater and anadromous species for 14 egg and larval traits
Figure A2. – Summary of the 162 answers for survey questions 5-9 (see Tab. A1 for details). Letter refer to the difficulties associated with (A) finding information (B) reading articles in English, (C) accessing documents, and (D) other reasons.
Figure 2 in A student-based expansion of the strategies of reproduction in fish (STOREFISH) database to 288 North American freshwater and anadromous species for 14 egg and larval traits
Figure 2. – The number of species (A) and records (B) in the original (black bars) and new (white bars) data sets for egg (left of the vertical bar) and larval (right of the bar) traits. Numbers in the x-axis correspond to trait numbers in Table I. The maximum possible number of species in (A) was 80 and 288 for the original and new data, respectively. See Table I for trait units and description.
Figure A3 in A student-based expansion of the strategies of reproduction in fish (STOREFISH) database to 288 North American freshwater and anadromous species for 14 egg and larval traits
Figure A3. – Boxplot summaries of the number of references (Q11) and traits (Q12) that the students found. See Table A1 for details.
Fig. 3 in Reproductive strategies of the kangaroo leech, Marsupiobdella africana (Glossiphoniidae)
Fig. 3. Scanning electron micrographs of a Marsupiobdella africana spermatophore: (a) proximal region showing the attachment disk attachment fibres; (b) spermatophore showing smooth surface of the two 'side by side' germinal lobes and; (c) distal horn. Scale bars: a, 50 μm; b, 100 μm; c, 20 μm.
Fig. 2 in Reproductive strategies of the kangaroo leech, Marsupiobdella africana (Glossiphoniidae)
Fig. 2. Microscope images of Marsupiobdella africana: (a) mature leech with a spermatophore implanted on the dorsal surface; (b) micrograph of a spermatophore firmly attached to a leech; (c) cross section through a spermatophore showing the two lobes; (d) histological cross section of a leech at the position of the spermatophore attachment; (e) histological section through the spermatophore contents that have been transferred into a leech; (f) light micrograph of a gravid leech with the brood pouch heavily swollen; (g) light micrograph showing young that are being discharged from the brood pouch; (h) sagittal section through the brood pouch containing several developing young. Abbreviations: as, attachment site; em, embryo; mp, marsupial pouch opening; sc, spermatophore contents; sp; sperm; sr, spermatophore; td, transfer duct. Scale bars: a, b, f and g, 500 μm; c and e, 20 μm; d, 200 μm; h, 250 μm.
Fig. 1 in Reproductive strategies of the kangaroo leech, Marsupiobdella africana (Glossiphoniidae)
Fig. 1. Light micrographs of (a) two Clawed Frogs Xenopus laevis infected with Kangaroo Leeches Marsupiobdella africana; (b) leeches on the legs of a Cape River Crab Potamonautes perlatus; and (c) two Kangaroo Leeches copulating.
Fig. 2 in Reproductive strategies of the parasitic flatworm Thaparocleidus vistulensis (Siwak, 1932) (Platyhelminthes, Monogenea) infecting the European catfish Silurus glanis Linnaeus, 1758
Fig. 2. The gills of infected fingerling European catfish by T. vistulensis. (A) Developing T. vistulensis attached to the normal gill filaments (arrows) at 2 dpi; (B) Abundance of T. vistulensis on the gill at 10 dpi; (C) (D) Sexually mature monogenean with egg inside the body (arrows) situated on the heavily injured gill at 10 dpi. Scale bars represent 200 μm.
Fig. 1 in Reproductive strategies of the parasitic flatworm Thaparocleidus vistulensis (Siwak, 1932) (Platyhelminthes, Monogenea) infecting the European catfish Silurus glanis Linnaeus, 1758
Fig. 1. Average infection dynamics of Thaparocleidus vistulensis. The First Trial and Second Trial refer to the primary axis (left side), while the Third Trial refers to the secondary axis (right side).
Fig. 3 in Reproductive strategies of the parasitic flatworm Thaparocleidus vistulensis (Siwak, 1932) (Platyhelminthes, Monogenea) infecting the European catfish Silurus glanis Linnaeus, 1758
Fig. 3. Light micrographs of egg development of T. vistulensis. (A) Adult T. vistulensis with an egg inside its body; (B) egg right after oviposition; (C) Egg after 6 hpo; (D) Egg after 24 hpo; (E) (F) Eggs between 24 and 48 hpo: (E) The whole embryo, (F) Larva with primordia of scattered pigment of eyespots and primordia of hamulus; (G) Eggs between 48 and 72 hpo: Developing larva with marginal hooklets and ciliated cells, ventral view; (H) (I) Eggs after 72 hpo: (H) Developed larva before eclosion with anchors and (I) marginal hooklets, lateral view; (J) Moment of eclosion; (K) Empty egg shell with opened operculum; (L) Recently hatched oncomiracidium. Abbreviations: ac, anterior cilia; ca, central anchor; e, eyespot; lc, lateral cilia; mh, marginal hooklets; o, operculum; pc, posterior cilia; pe, primordial eyespot; ph, primordia of hamulus. Scale bars represent 20 μm except for (A), (J), and (L) 50 μm.
Figure 1 in Reproductive biology and strategies of nine meloid beetles from Central Europe (Coleoptera: Meloidae)
Figure 1. Correlation between mean egg number per oviposition and female and the beetle's size (expressed as pronotum length), determined separately for each species (*not applicable for Meloe rufiventris, since four out of seven females had the same pronotum length).
Figure 2 in Reproductive biology and strategies of nine meloid beetles from Central Europe (Coleoptera: Meloidae)
Figure 2. Correlation between mean egg weight per oviposition and female and the beetle's size (expressed as pronotum length), determined separately for each species (*not applicable for Meloe rufiventris, since three out of four females had the same pronotum length).
Figure 1 in Reproductive strategies of two sympatric species of Hyalella Smith, 1874 (Amphipoda, Dogielinotidae) in laboratory conditions
Figure 1. Assortative mating, estimated as the relationship of male and female body size (head length in mm) for precopulatory mating pairs in Hyalella pleoacuta and H. castroi. HLm, head length of males; HLf, head length of females; n, number of individuals.
Figure 3 in Reproductive strategies of two sympatric species of Hyalella Smith, 1874 (Amphipoda, Dogielinotidae) in laboratory conditions
Figure 3. Regression analyses between body size of ovigerous females (head length—HL) and number of eggs in embryonic developmental stages and number of juveniles in H. castroi. F, fecundity.
Figure 2 in Reproductive strategies of two sympatric species of Hyalella Smith, 1874 (Amphipoda, Dogielinotidae) in laboratory conditions
Figure 2. Regression analyses between body size of ovigerous females (head length—HL) and number of eggs in embryonic developmental stages and number of juveniles of H. pleoacuta. F, fecundity.
Fig. 5 in The opportunistic feeding and reproduction strategies of the annual fish Cynopoecilus melanotaenia (Cyprinodontiformes: Rivulidae) inhabiting ephemeral habitats on southern Brazil
Fig. 5. Individuals of Cynopoecilus melanotaenia grouped by frequencies (%) of distribution of oocyte diameters (μm), from wetlands between São Gonçalo channel and Pelotas stream, during May and June 2005, and September 2006. Arrows indicate the size in which the oocytes become mature.
Fig. 3 in The opportunistic feeding and reproduction strategies of the annual fish Cynopoecilus melanotaenia (Cyprinodontiformes: Rivulidae) inhabiting ephemeral habitats on southern Brazil
Fig. 3. Diet of males (a) and females (b) of Cynopoecilus melanotaenia from wetlands between São Gonçalo channel and Pelotas stream, during May and June 2005, and September 2006, according to the frequency of occurrence and dominance of food items.
Fig. 2 in The opportunistic feeding and reproduction strategies of the annual fish Cynopoecilus melanotaenia (Cyprinodontiformes: Rivulidae) inhabiting ephemeral habitats on southern Brazil
Fig. 2. Average, standard error and confidence interval (95%) for the lengths of males and females of Cynopoecilus melanotaenia from wetlands between São Gonçalo channel and Pelotas stream, during May and June 2005, and September 2006.
ScienceDex guides
Understand access before you commit
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.