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62 results for “egg masses”
FIGURES 18–27. C. perseana immature stages. 18–19, egg masses. 20 in A new avocado pest in Central America (Lepidoptera: Tortricidae) with a key to Lepidoptera larvae threatening avocados in California
FIGURES 18–27. C. perseana immature stages. 18–19, egg masses. 20, larval damage to avocado fruit. 21–22, larvae. 23–25, pupae. 26, pupa exuvium extruding from avocado. 27, adult resting on avocado.
Cold storage of Spodoptera litura eggs and Telenomus remus adults for improving mass-rearing efficiency
<p>This is the raw data of the performance of <em>Telenomus remus</em> adults after refrigeration and the its parasitism capacity on stored <em>Spodoptera litura</em> eggs.</p>
Data from: The trade-off between clutch size and egg mass in tree swallows (Tachycineta bicolor) is modulated by female body mass
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Disentangling the interrelations of body mass, egg deposition site, climate and microhabitat use in frogs and salamanders
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Data from: Genomic dissection of variation in clutch size and egg mass in a wild great tit (Parus major) population
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Data from: Quorum-sensing signaling by chironomid egg masses’ microbiota affects haemagglutinin/protease (HAP) production by Vibrio cholerae
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Data from: Experimental increase in temperature affects eggshell thickness, and not egg mass, eggshell spottiness or egg composition in the great tit (Parus major)
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Data from: Estimating egg mass-body mass relationships in birds
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Numerical and mass concentrations of microplastic debris collected by manta net; Numerical concentrations of Halobates sericeus adults/juveniles and eggs; zooplankton biomass concentration. Various cruises from 1972 - 2010 (completed).
Microplastic, Halobates, and zooplankton were collected using a standard manta net tow. Each sample was sorted at 6-12x magnification under a Wild M-5 dissecting microscope, and plastic particles and H. sericeus removed for further analysis. Plastic particles were soaked in deionized water to remove salts, dried at 60°C, and stored in a desiccator. Dry mass was measured on an analytical balance. Particles were then digitally imaged with a Zooscan digital scanner (Gorsky et al. 2010). The total number of particles was measured using NIH ImageJ-based tools in the Zooprocess software, calibrated against manual measurements (Gilfillan et al. 2009, Gorsky et al. 2010). H. sericeus samples were enumerated and classified into 5 categories: juvenile, adult male, adult female, newly molted, and molted exoskeletons. H. sericeus eggs, both those attached to plastic and those that had become detached during the collection process, were also enumerated. Dry mass of zooplankton was obtained from preserved manta tow samples. After fixation in 1.8% formaldehyde for 24 months, samples were split in a Folsom splitter, filtered onto 202 µm Nitex mesh disks and rinsed with isotonic ammonium formate. Filters were dried for 24 hours at 60°C and placed in a vacuum dessicator until weighing. Filters were weighed to the nearest 0.0001 gram on the same analytical balance as the plastic samples. A 20% correction factor was applied in order to compensate for the biomass lost by preservation.
Figure 1 in Observations of multiple pelagic egg masses from small-sized jumbo squid (Dosidicus gigas) in the Gulf of California
Figure 1. Conductivity, temperature, depth profile in the Gulf of California (27.25° N, 111.5° W) on 28 May 2015. Horizontal dashed lines represent depth of egg masses.
Figure 4 in Observations of multiple pelagic egg masses from small-sized jumbo squid (Dosidicus gigas) in the Gulf of California
Figure 4. (a) Dosidicus gigas embryos. (b) Stage 17 embryo on a 1 mm-spaced ruler. (c) Stage 21 embryo. (d) Punctate chromatophores on a paralarva. (e) Hatched paralarva. Note the very short proboscis.
Figure 5 in Observations of multiple pelagic egg masses from small-sized jumbo squid (Dosidicus gigas) in the Gulf of California
Figure 5. (a) Scuticociliates (Metanophrys sinensis) around the eye of a live Dosidicus gigas paralarva. (b) Scuticociliates around a dead embryo. (c) Parascelus sp. found in a D. gigas egg mass sample. (d) An amphipod (Hyperiidae) found in a D. gigas egg mass sample.
Figure 3 in Observations of multiple pelagic egg masses from small-sized jumbo squid (Dosidicus gigas) in the Gulf of California
Figure 3. (a) Distribution of Dosidicus gigas embryo and paralarval stages found in six egg masses. The variability in the number of eggs from each mass was due to sampling variability. (b) Estimated age (duration since spawning event) of egg masses based on modal stage. Stages and corresponding ages are based on Watanabe et al. (1996). Note that the May 29 #2 and May 30 #2 masses are slightly older than May 28 #1 even though they have less developed embryos because the Stage 17 age estimate is from 20 rather than 23°C incubation and thus a slower developmental rate. (c) Estimated time the egg masses were spawned based on age.
Agalychnis callidryas and A. spurrelli egg masses
<p class="MsoNormal">Syntopic populations of species provide a unique opportunity to examine divergence of adaptive traits that suggest character displacement when compared with allopatric populations of those species. Past work on syntopic populations of tree frogs, Agalychnis callidryas and A spurrelli documented differences in embryonic risk responses. Due to a serendipitous opportunity, we sampled egg masses from these species oviposited during a breeding aggregation at a forested wetland during July 2017 in the Puntarenas Province of Costa Rica. We collected data on egg masses of the two species including oviposition site and evidence of predation. Both species oviposited on vegetation around the perimeter of the wetland. Additionally, we found that A. callidryas, the species that was previously documented as hatching quickly in response to snake predation took advantage of canopy vegetation overhanging the wetland for oviposition, sites more available to arboreal snakes. This canopy vegetation was not used by A spurrelli. Conversely, A spurrelli, the species shown to respond more strongly to submergence by hatching early, oviposited on vegetation directly emerging from the wetland, sites not used by A callidryas. This divergence of reproductive and ecological traits is not seen in allopatric populations of the same species. These findings suggest that character displacement in oviposition site may have caused differences in selection pressure on embryonic behavior.</p>
Figure 2 from: Riera R, Escanez A, González Á, Sierra Á (2012) On the occurrence of egg masses of the diamond-shaped squid Thysanoteuthis rhombus Troschel, 1857 in the subtropical eastern Atlantic (Canary Islands). A potential commercial species? ZooKeys 222: 69-76. https://doi.org/10.3897/zookeys.222.2835
Figure 2 - Some Thysanoteuthis rhombus egg masses recorded (numbers refer to descriptions in Table 1 and Figure 1).
Figure 1 from: Riera R, Escanez A, González Á, Sierra Á (2012) On the occurrence of egg masses of the diamond-shaped squid Thysanoteuthis rhombus Troschel, 1857 in the subtropical eastern Atlantic (Canary Islands). A potential commercial species? ZooKeys 222: 69-76. https://doi.org/10.3897/zookeys.222.2835
Figure 1 - Distribution of egg masses of Thysanoteuthis rhombus in Canary Islands. Triangles: literature records. Circles: new data (numbers refer to descriptions in Table 1).
Data from: Experimental manipulation of food availability leads to short-term intra-clutch adjustment in egg mass but not in yolk androgen or thyroid hormones
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Data from: Mother and offspring fitness in an insect with maternal care: phenotypic trade-offs between egg number, egg mass and egg care
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Agalychnis callidryas and A. spurrelli egg masses
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Association of egg mass and egg sex in chicken
GEO Series GSE59041. Gallus gallus. 15 samples. Type: Expression profiling by array.
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