Results 81 to 90 of about 187,236 (351)

Biology of the amphipod Gammarus pulex L. in water-bodies of the Leningrad district, and its piscicultural importance [Translation from: Trudy Vsesoyuznogo Gidrobiologicheskogo Obshchestva 7 99-122, 1956] [PDF]

open access: yes, 1977
Observations and laboratory experiments are summarised that examine the widely discussed issue of what Gammarus pulex feeds on. On the basis of the observations of the authors and data from the literature it can be noted that G.
Borovitskaya, M. P.
core  

No compromise between metabolism and behavior of decorator crabs in reduced pH conditions. [PDF]

open access: yes, 2019
Many marine calcifiers experience metabolic costs when exposed to experimental ocean acidification conditions, potentially limiting the energy available to support regulatory processes and behaviors. Decorator crabs expend energy on decoration camouflage
Graeve, Olivia A   +3 more
core   +3 more sources

In‐vitro puncture experiment using alligator teeth tracks the formation of dental microwear and its association with hardness of the diet

open access: yesThe Anatomical Record, EarlyView.
Abstract With the development of dental microwear texture analysis (DMTA), there has been an increasing application of DMTA for dietary estimation in extant and fossil reptiles, including dinosaurs. While numerous feeding experiments exist for herbivorous mammals, knowledge remains limited for carnivorous reptiles. This study aimed to qualitatively and
K. Usami, M. O. Kubo
wiley   +1 more source

Pattern recognition receptors in Crustacea: immunological roles under environmental stress

open access: yesFrontiers in Immunology
Innate immunity is the first line of defense against infections and the only known available strategy for invertebrates. Crustaceans, being mostly aquatic invertebrates, are constantly exposed to potential pathogens in the surrounding water. Their immune
Jesús Luis Betancourt   +2 more
doaj   +1 more source

Abiotic factors effects on demineralization of blue swimming crab shell (Portunus segnis), Persian Gulf, for purification of chitin [PDF]

open access: yesبوم‌شناسی آبزیان, 2018
Different factors are involved in the removal of inorganic compounds from the shells of crustaceans. In this study, different effective factors were optimized for the removal of inorganic compounds from the chitin of crab shell Portunus segnis.
Mohammad Sadegh Khakshoor   +1 more
doaj  

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

open access: yesThe Anatomical Record, EarlyView.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

Detection of Crabs and Lobsters Using a Benchmark Single-Stage Detector and Novel Fisheries Dataset

open access: yesComputers
Crabs and lobsters are valuable crustaceans that contribute enormously to the seafood needs of the growing human population. This paper presents a comprehensive analysis of single- and multi-stage object detectors for the detection of crabs and lobsters ...
Muhammad Iftikhar   +4 more
doaj   +1 more source

Dscam1 in Pancrustacean Immunity: Current Status and a Look to the Future

open access: yesFrontiers in Immunology, 2017
The Down syndrome cell adhesion molecule 1 (Dscam1) gene is an extraordinary example of diversity: by combining alternatively spliced exons, thousands of isoforms can be produced from just one gene. So far, such diversity in this gene has only been found
Sophie A. O. Armitage   +6 more
doaj   +1 more source

Progress in the discovery of amphipod crustaceans

open access: yesPeerJ, 2018
At present, amphipod crustaceans comprise 9,980 species, 1,664 genera, 444 subfamilies, and 221 families. Of these, 1,940 species (almost 20%) have been discovered within the last decade, including 18 fossil records for amphipods, which mostly occurred ...
Tri Arfianti   +2 more
semanticscholar   +1 more source

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

open access: yesThe Anatomical Record, EarlyView.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy