Results 61 to 70 of about 1,898 (201)

Three Distinct Views of Deep Pelagic Community Composition Based on Complementary Sampling Approaches

Frontiers in Marine Science, 2022
Our perception of deep-sea communities has evolved as various sampling approaches have captured different components of deep-sea habitats. We sampled midwater zooplankton assemblages in Monterey Bay, California to quantify community composition ...
Elizabeth D. Hetherington, C. Anela Choy, Erik V. Thuesen, Steven H. D. Haddock   +3 more
doaj   +1 more source

Functional morphology of the pharyngeal teeth of the ocean sunfish, Mola mola

The Anatomical Record, EarlyView.
Abstract Many fish use a set of pharyngeal jaws in their throat to aid in prey capture and processing, particularly of large or complex prey. In this study—combining dissection, CT scanning, histology, and performance testing—we demonstrate a novel use of pharyngeal teeth in the ocean sunfish (Mola mola), a species for which pharyngeal jaw anatomy had ...
Benjamin Flaum, Michael J. Blumer, Mason N. Dean, Laura J. Ekstrom   +3 more
wiley   +1 more source

From the sea to DNA barcode: Optimized preservation method for gelatinous zooplankton integrative taxonomy

Limnology and Oceanography: Methods, EarlyView.
Abstract Assigning taxonomic identity and thus assessing taxonomic diversity in gelatinous zooplankton is challenging due to their fragility and difficult preservation. Formalin fixation compromises DNA integrity, while flash‐freezing, ethanol, and acetone preservation affect morphological features. In this study, we developed a methodological protocol
Claudia Traboni, Rade Garić, Rita Marino, Paolo Sordino, Priscilla Licandro   +4 more
wiley   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

Distribution and diversity of gelatinous zooplankton in Indian EEZ

, 2012
Link between increases of gelatinous zooplankton and global warming is recent emerging research in world Ocean. Indian seas are less documented areas of the world regarding gelatinous zooplankton taxonomy and ecology. Considerable amount of work has been
Sampathkumar, P., Balamurugan, K., Ezhilarasan, P., Kannathasan, A.   +3 more
core   +1 more source

Massive consumption of gelatinous plankton by Mediterranean apex predators.

PLoS ONE, 2012
Stable isotopes of carbon and nitrogen were used to test the hypothesis that stomach content analysis has systematically overlooked the consumption of gelatinous zooplankton by pelagic mesopredators and apex predators.
Luis Cardona, Irene Álvarez de Quevedo, Assumpció Borrell, Alex Aguilar   +3 more
doaj   +1 more source

Stranding of blue button jelly Porpita porpita on the beaches of Visakhapatnam, India (Western Bay of Bengal)

Marine and Fishery Sciences, 2023
Porpita porpita occurs in the tropical and sub-tropical waters of the Pacific, Atlantic, and Indian Oceans, and the mass numbers of stranded colonies seem to be increasing. Although its presence in Indian waters is minimal, this is the first record ever
Sujit K. Pattnayak, Krishnan Silambarasan, Annada Bhusan Kar , Pratyush Das, Gummadi V. A. Prasad   +4 more
doaj   +1 more source

Using Eye Lens Stable Isotopes to Identify the Rearing Origin of Fall Age‐0 Walleye (Sander vitreus)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Isotope values in fish eye lenses may be useful in differentiating rearing origins. We compared eye lens isotopic values of fall fingerling age‐0 walleye (Sander vitreus) reared in a hatchery pond, a recirculating aquaculture system (RAS), and a natural lake. Using 10 fish per rearing source, we delaminated layers from one eye lens per fish to
Justin M. Sturtz, Benjamin J. Schall, Matthew J. Ward, Cody E. Treft, Steven R. Chipps, Christopher A. Cheek   +5 more
wiley   +1 more source

A semi-automated image analysis procedure for in situ plankton imaging systems. [PDF]

PLoS ONE, 2015
Plankton imaging systems are capable of providing fine-scale observations that enhance our understanding of key physical and biological processes. However, processing the large volumes of data collected by imaging systems remains a major obstacle for ...
Hongsheng Bi, Zhenhua Guo, Mark C Benfield, Chunlei Fan, Michael Ford, Suzan Shahrestani, Jeffery M Sieracki   +6 more
doaj   +1 more source

Gelatinous zooplankton versus Algerian environmental factors

, 2022
Abstract Factors governing gelatinous zooplankton distributions and dispersal have long interested pelagic ecologists. The objective of the present study was to investigate the distribution of gelatinous zooplankton in relation to environmental parameters of coastal Algeria (Southwestern Mediterranean Sea).
Ghollame Ellah Yacine KHAMES, Zakia ALIOUA, Aldjia KHERCHOUCHE, Aziz HAFFERSSAS   +3 more
openaire   +1 more source