Trawl P-4; sample 2/18; Echinoderms, sipunculids, nemertea, etc.
Title
Anthozoa sp.
Description
Trawl II-4; sample 1/4; Anemone sp. 2
Title
Petrolisthes cinctipes
Title
Pasiphaea magna
Title
Fusinus luteopictus
Description
Material picked from large collection of coralline algae
Title
Eucopella sp.
Description
O: Hydroida
Title
Colossendeis colossea
Description
Trawl II-6;
Title
Eubranchus rustyus
Title
Anthozoa sp.
Description
Trawl II-5; sample 2/10; Anemone
Title
Calliopius laeviusculus
Description
Night lights; Amphipoda
Title
Biological Report
Description
Title
Anthozoa sp.
Description
Trawl M-4; sample 5/23; Anemones
Title
Holothuria impatiens
Title
Isididae sp.
Description
Trawl II-1; sample 1/3; Isiidae -bamboo coral
Title
Systellaspis cristata
Description
Midwater; Steinhart tow 62
Title
Okenia rosacea
Description
O: Nudibranchia; SC: Opisthobranchia
Title
California State Waters Map Series—Offshore of Pigeon Point, California
Description
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and visualization of swath sonar data, acoustic backscatter, seafloor video, seafloor photography, high-resolution seismic-reflection profiles, and bottom-sediment sampling data. The map products display seafloor morphology and character, identify potential marine benthic habitats, and illustrate both the surficial seafloor geology and shallow subsurface geology.
Dietary variability in two common Alaskan skates (Bathyraja interrupta and Raja rhina)
Description
Determining trophic relationships within and among species can provide insight into the structure and function of an ecosystem, and can inform the development of multi-species monitoring and management plans. The goal of this study was to address the need for dietary and trophic information of two common and abundant skates in Prince William Sound (PWS), the Bering skate, Bathyraja interrupta, and longnose skate, Raja rhina. Based on identification and analysis of stomach content data, both species were found to be generalist predators with diets dominated by crustaceans and supplemented with teleosts. The primary source of dietary variability for each species was total length, with spatial variables (i.e., latitude, longitude, and depth) also explaining a large portion of total dietary variability in the Bering skate. However, only a small proportion of the total intraspecific dietary variation was accounted for among the analyzed variables, suggesting substantial individual-based differences in the feeding habits of each species. Trophic level estimates indicated that the Bering skate and longnose skates <100 cm total length (TL) were secondary consumers, whereas longnose skates ≥100 cm TL were more piscivorous, tertiary consumers. Significant interspecific dietary differences were also evident, suggesting trophic separation, likely as a function of skate size. Given their abundance and generalistic feeding behavior, PWS skates can provide a means of monitoring demersal community health; information about their foraging ecology will be valuable in gaining a better understanding of trophodynamics within the PWS food web.
Pristiophorus lanae sp. nov., a new sawshark species from the western north Pacific, with comments on the genus Pristiophorus Müller & Henle, 1837 (Chondrichthyes: Pristiophoridae)
