• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

These data represent reproductive ecology characteristics for 4 species of mature female turtles captured at Elephant Butte Reservoir on the Rio Grande River in New Mexico, during two field survey...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

Table 1, compiles data from published studies of various subspecies of the slider turtle (Trachemys scripta) from throughout the native range of the species in the United States. Data include...

• xml
• xml

• Organization: U.S. Environmental Protection Agency
• Updated: 2021-01-15

Mothers may produce more of one sex to maximize their fitness if there are differences in the cost of producing each sex or there are differences in their relative reproductive value. We tested if...

• html

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-05-15T19:15:49.000+00:00

Seasonal migration of commercial-size (=102 mm carapace width [CW]), morphometrically mature (MM) snow crabs (Chionoecetes opilio) from the eastern Bering Sea was examined in relation to the...

• none
• none
• none
• none

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2024-02-29T00:00:00.000+00:00

Stock assessment of Alaskan red king crab, Paralithodes camtschaticus (Tilesius, 1815), can be improved by incorporating reproductive output, which requires an understanding of the size-fecundity...

• none
• none
• none

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-05-05T00:00:00.000+00:00

Information to support Size Maturity and Spawning season for 7 species, including Fork length, Tail length, Mass, Gonad Mass, and GSI. Size at maturity and spawning season were estimated for...

• none
• none
• none
• none
• none
• none

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-05-15T19:15:44.000+00:00

Maternal effects on the quality of progeny can have direct impacts on population productivity. Rockfish are viviparous and the oil globule size of larvae at parturition has been shown to have...

• none
• none
• none

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-04-01T17:16:20.000+00:00

Protogynous fishes are often assumed to be more sensitive than gonochorists to exploitation, primarily because of potential sperm limitation and/or social disruption of mating if larger, mostly...

• none
• none
• none

• Organization: Department of the Interior
• Updated: 2020-08-20T00:00:00Z

The endangered Indiana bat (Myotis sodalis) has declined dramatically and continuing threats have made it necessary to understand population dynamics and life history throughout the year....

• xml
• xml

• Organization: Department of the Interior
• Updated: 2016-10-11T00:00:00Z

"PI is studying the impact of hemlock decline in riparian areas on the riparian obligate bird species Louisiana waterthrush and the hemlock-associated bird species Acadian flycatcher. Citizen...

• zip
• zip

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2014-01-01T00:00:00.000+00:00

This project addresses major gaps in knowledge on vital rates such as age to maturity, survival, sex ratios, and population size (including the males)whcih have made it difficult to conduct...

• none
• none
• none
• none

• Organization: Department of the Interior
• Updated: 2020-08-20T00:00:00Z

These bat location estimates have been reported by Bogan and others (In press) and come in the form of a GIS shape file. Three species of nectar-feeding phyllostomid bats migrate north from...

• xml
• xml