Filters: Tags: Eggs (X) > Categories: Data (X)

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Annual Variation Birds as indicators of contaminants in the Great Lakes Tree swallow (Tachycineta bicolor) eggs and nestlings were collected from 16 sites across the Great Lakes to quantify normal annual variation in total polychlorinated biphenyl (PCBs) exposure and to validate the sample size choice in earlier work. A sample size of 5 eggs or 5 nestlings per site was adequate to quantify exposure to PCBs in tree swallows given the current exposure levels and variation. There was no difference in PCB exposure in 2 randomly selected sets of 5 eggs collected in the same year, but analyzed in different years. Additionally, there was only modest annual variation in exposure, with between 69% (nestlings) and 73% (eggs) of sites having no differences between years. There was a tendency,... Categories: Data; Tags: Areas of Concern (AOC), Great Lakes, Great Lakes Basin, PCBs, Tachycineta bicolor, All tags... Tree Swallows, USGS Science Data Catalog (SDC), annual variation, eggs, nestlings, Fewer tags Reproductive success and contaminant associations in tree swallows (Tachnycineta bicolor) nesting in the U.S. and Binational Great Lakes' Areas of Concern data During 2010-2014, tree swallow (Tachycineta bicolor) reproductive success was monitored at 68 sites across all 5 Great Lakes, including 58 sites located within Great Lakes Areas of concern (AOCs) and 10 non-AOCs. Sample eggs were collected from tree swallow clutches and analyzed for contaminants including polychlorinated biphenyls (PCBs), dioxin and furans, polybrominated diphenyl ethers, and 34 other organic compounds. Contaminant data were available for 360 of the 1249 clutches monitored. Markov chain multistate modeling was used to assess the importance of 5 ecological and 11 of the dominant contaminants in explaining the pattern of egg and nestling failure rates. Four of 5 ecological variables (female Age, Date... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Areas of Concern, Great Lakes, PBDEs, PCBs, PCDD-F, All tags... Tachycineta bicolor, Tree swallows, USGS Science Data Catalog (SDC), egg failure probability, eggs, hatching success, industrial pollution, nestling failure probability, organic pesticides, reproductive success, Fewer tags Mojave Desert Tortoise (Gopherus agassizii) Morphometrics and Egg Data from Seven Sites across the Mojave, (1997-2002) These data were acquired from 7 study sites distributed across the range of Gopherus agassizii. Data were collected from 1997 to 2002 as part of three separate studies, although data were not collected at all sites in each year. Radio-transmitters were attached to the carapace of 151 females and VHF radio-telemetry was used to relocate animals to assess reproductive status. Egg production was determined from X-radiographs taken weekly/biweekly intervals (depending on the study) using a portable X-ray machine between April and July or August of each year. In addition, the mean carapace length (MCL) of each tortoise was measured at each time of capture or recapture using calipers (mm). A nesting event was recorded... Categories: Data; Tags: Area 31, Bird Spring Valley, California, Gopherus agassizii, Lake Mead National Recreation Area, All tags... Mojave Desert, Mojave National Preserve, Mojave desert tortoise, Nevada, Pahcoon Flat, Piute Valley, Redcliffs, Sandstone Mountain, USGS Science Data Catalog (SDC), Utah, Wildlife Biology, X-radiography, biological production, biota, body size, climate change, climatic variability, climatic variation, clutch size, ecology, ecosystem functions, eggs, environmental effects, environmental variables, field inventory and monitoring, radiography, reproduction, reproductive output, reproductive status, reptile, reptiles, size, tortoises, total annual egg production, wildlife, wildlife biology, Fewer tags Bigheaded carp ichthyoplankton qPCR screening tool: data This dataset includes information from ichthyoplankton sampling for silver carp and bighead carp collected from three main reaches in the Upper Mississippi River Basin, including the La Grange, Peoria, Starved Rock, and Marseilles reaches of the Illinois River, Pool 20 of Mississippi River, and the St. Croix River. Data include the number of bigheaded carp eggs and larvae identified using traditional manual sorting techniques, and genetic data derived from quantitative PCR (qPCR) and 4 bigheaded carp markers (SCTM4/5 and BHTM1/2) that were used to identify the amount of DNA in ichthyoplankton tow samples. These data provide information for natural resource agencies and managers who could use this qPCR screening... Categories: Data; Tags: Hypophthalmichthys, Illinois, Illinois River, USA, Iowa, Midwest Region, USA, All tags... Minnesota, Mississippi River, USA, St Croix River, USA, USGS Science Data Catalog (SDC), Wisconsin, bighead carp, biota, eggs, genetic screening, larvae, silver carp, Fewer tags Female Faxonius (formerly Orconectes) quadruncus broodstock for toxicity testing Broodstock, individual Faxonius quadruncus, were collected for culturing eggs until hatch. Hatchling crayfish were to be used in toxicity testing to assess hazards of metals mixtures to young Faxonius quadruncus Categories: Data; Tags: Biota, Faxonius quadruncus, Little St. Francis River, Missouri, Rock Creek, All tags... St. Francis River drainage, USA, USGS Science Data Catalog (SDC), eggs, fecundity, hatchlings, toxicity testing, Fewer tags Lake trout hatch rates using adults collected in 2019 from Northern Refuge, Lake Michigan Data includes hatch, unfertilized, underdeveloped, and larval mortality count data of lake trout (Salvelinus namaycush) eggs fertilized from adult gametes collected within Northern Refuge reefs in Lake Michigan conducted by the U.S. Geological Survey Great Lakes Science Center during Fall 2019 gill net survey. Adult lake trout were collected using gill net (4.5, 5.5, and 6.0 inch) panels. Gametes were removed and fertilized in the field and then incubated at the Great Lakes Science Center Aquatic Research Laboratory in Ann Arbor, MI. Results are reported as date, collection reef, latitude, longitude, tray number, reef panel, and counts (unfertilized, dead or unsuccessful hatch, hatched, and larval mortality). Categories: Data; Tags: Aquatic Biology, Ecology, Great Lakes, Lake Michigan, USGS Science Data Catalog (SDC), All tags... Wildlife Disease, biota, contamination and pollution, eggs, fish, lake trout, Fewer tags Birds as indicators of contaminants in the Great Lakes - Egg Contaminants Data Tree swallows, Tachycineta bicolor, were sampled across the Great Lakes basin in 2010-2015 to provide a system-wide assessment of current exposure to organic contaminants. These results provide information identified as critical by land managers and regulators to assess the ‘Bird or Animal Deformity or Reproductive Problems’ Beneficial Use Impairment. Eggs were collected from 69 sites across all five Great Lakes, including 27 Areas of Concern (AOCs), some with multiple sites, and ten sites not listed as an AOC. Concentrations of organic contaminants in eggs were quantified and compared to background and reproductive effect thresholds. Approximately one-third of the AOCs had geometric mean concentrations of total... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: EPA Areas of Concern, GLRI, Great Lakes, Great Lakes Basin, Great Lakes Restoration Initiative, All tags... Lake:Lake Erie, Lake:Lake Huron, Lake:Lake Michigan, Lake:Lake Ontario, Lake:Lake St. Clair, Lake:Lake Superior, PBDEs, PCBs, PCDD-F, Template 80, Toxic Substances, eggs, organic pesticides, tree swallows, Fewer tags Do life history traits influence patterns of maternal immune elements in New World blackbirds (Icteridae) data release This metadata record represents passive immunity components of six songbird species (Passeriformes) in a single taxonomic family, the New World blackbirds (Icteridae). Six immune elements were compared among blackbird eggs collected in North Dakota, South Dakota, and Puerto Rico, including immunoglobulins (Ig) in both yolk and albumen, lipopolysaccharide-specific immunoglobulins in both yolk and albumen, and ovotransferrin and lysozyme in albumen. The data were summarized and used in the analysis for a peer-reviewed journal publication entitled: "Do life history traits influence patterns of maternal immune elements in New World blackbirds (Icteridae)?" The data consist of two data sets. The first data set includes... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Albumen, Brood parasitism, Cabo Roja Municipality, Puerto Rico, Clutch size, Colonial, All tags... Day County, South Dakota, Eco-immunology, Ecological immunology, Eddy County, North Dakota, Eggs, Hettinger County, North Dakota, Immunoglobulins, Immunology, Kidder County, North Dakota, Life history, Lysozyme, Maternal effects, McPherson County, South Dakota, Nest, North Dakota, Passive immunity, Puerto Rico, South Dakota, Stutsman County, North Dakota, USGS Science Data Catalog (SDC), Yolk, biota, birds, environment, immunology, Fewer tags Fish Egg Retention on Egg Mats in Experimental Flumes and Targeted Field Gear Egg Collection in the Detroit River, 2015-2016 Egg mat retention trials were conducted with walleye (Stizostedion vitreum) and lake whitefish (Coregonus clupeaformis) eggs in an experimental flume tank, seeded directly on egg mats (test retention efficiency) and hand dispersed in flowing flume water to simulate spawning over egg mats (test capture efficiency) with and without alternate substrate. In the field study, we measured number of eggs collected on mats and with bottom drift nets in the Detroit River to compare capture effectiveness. The field collection data describe the number, date of collection, and exact collection location of target species (walleye and lake whitefish). The flume trial data include number of eggs retained or collected, water velocity,... Categories: Data; Tags: Aquatic Biology, Coregonus clupeaformis, Detroit River, Ecology, Maumee River, All tags... Saginaw Bay, Sander vitreus, Stizostedion vitreum, USGS Science Data Catalog (SDC), biological sampling, biota, eggs, environment, field inventory and monitoring, fish eggs, fish eggs, fishery management, fishery resources, fishes, freshwater ecosystems, gear efficiency, inlandWaters, lake whitefish, river systems, walleye, Fewer tags