scholarly journals Cosmopolitan Distribution of Endozoicomonas-Like Organisms and Other Intracellular Microcolonies of Bacteria Causing Infection in Marine Mollusks

2020 ◽  
Vol 11 ◽  
Author(s):  
Irene Cano ◽  
David Ryder ◽  
Steve C. Webb ◽  
Brian J. Jones ◽  
Cara L. Brosnahan ◽  
...  
Keyword(s):  
Cosmopolitan Distribution ◽  
Marine Mollusks

Recent progress in marine mollusks from the South China Sea: chemical and ecological studies

2020 ◽  
Vol 17 ◽  
Author(s):  
Song-Wei Li ◽  
Yue-Wei Guo
Keyword(s):  
South China Sea ◽  
South China ◽  
Biological Activities ◽  
The South China Sea ◽  
Bioactive Metabolites ◽  
Research Subject ◽  
Ecological Studies ◽  
The South ◽  
China Sea ◽  
Marine Mollusks

: Marine mollusks are a prolific source of secondary metabolites with complex/diverse structures and various aspects of biological activities. For above mentioned reason, these animals have been being extensively explored and became the hotspot of research subject in the recent years. It is well documented that mollusks can escape from predation by utilizing bioactive metabolites as defensive chemicals. In the last decade, the possible diet relationship between the South China Sea mollusks and their related potential prey organisms, including sponges, corals, algae, etc. have been systematically investigated. A series of interesting results have been obtained concerning the chemistry, chemoecology and pharmacological profiles of the studied marine organisms. The present review focuses on recent development dealing with chemistry, chemoecology, and bioactivity of the South China Sea mollusks and their dietary organisms.

NITROGEN ISOTOPES IN MARINE MOLLUSKS AS INDICATORS OF NITROGEN LOADING IN COASTAL NORTH CAROLINA

2018 ◽  
Author(s):  
Hayley I. Bennett ◽  
◽  
David P. Gillikin ◽  
David H. Goodwin ◽  
Elizabeth Cilia ◽  
...  
Keyword(s):  
North Carolina ◽  
Nitrogen Isotopes ◽  
Nitrogen Loading ◽  
Marine Mollusks

scholarly journals Comparative Tissue Responses of Marine Mollusks on Seasonal Changes in the Northern Adriatic Sea

2021 ◽  
Vol 11 (6) ◽  
pp. 2874
Author(s):  
Natalija Topić Popović ◽  
Martina Krbavčić ◽  
Josip Barišić ◽  
Blanka Beer Ljubić ◽  
Ivančica Strunjak-Perović ◽  
...  
Keyword(s):  
Stress Responses ◽  
Seasonal Variations ◽  
Antioxidant Defense ◽  
Winter Season ◽  
Northern Adriatic ◽  
Gonadal Maturation ◽  
Marine Mollusks ◽  
Significant Difference ◽  
Tissue Responses ◽  
Antioxidant Defense Systems

In the shallow Northern Adriatic, marine mollusks are affected by bottom trawling and seafood disturbance. Seasonal oscillations of oceanographic factors additionally influence their physiology, stress responses and survival. Tissue responses to seasonal variations in green ormer (Haliotis tuberculata L.) and Mediterranean scallop (Pecten jacobaeus L.) in the Northern Adriatic have not been reported. Hence, their biochemical and antioxidant defense properties over seasons were studied and the microanatomical structure of their tissue was correlated with function. Histological analysis of gonads revealed two peaks of gonadal maturation and spawning during the spring/summer period and winter season for scallops, and one peak during the fall for ormers. The gonadal maturation of both species was correlated with their seasonal variations of metabolic demands and antioxidant capacity. The lipid vacuoles of tubuloacinar terminations in the digestive gland differed between the two species; in scallop they are several-fold larger in size and number. Low temperatures in winter contributed to a decline in enzymatic antioxidant defense in scallop tissues, having lower superoxide dismutase (SOD) and glutathione peroxidase (GPx) activity, and higher concentrations of thiobarbituric acid reactive substances (TBARS) and total antioxidant status (TAS). In ormers, winter induced lower TAS, TBARS, SOD and GPx concentrations. The significant difference of winter TAS and TBARS levels between ormers and scallops was correlated with variations in their reproductive cycles, as well as in antioxidant defense systems. The most important factor for stress-related parameters for both species in this work was found to be the season-induced temperature change.

The first Tertiary (Paleocene) marine mollusks from the Eureka Sound Group, Ellesmere Island, Canada

1991 ◽  
Vol 65 (2) ◽  
pp. 242-248 ◽  
Author(s):  
Louie Marincovich ◽  
William J. Zinsmeister
Keyword(s):  
Atlantic Ocean ◽  
South Dakota ◽  
Arctic Ocean ◽  
Canadian Arctic ◽  
Ellesmere Island ◽  
Marine Mollusks ◽  
Molluscan Fauna ◽  
Northern Atlantic ◽  
Northern Alaska ◽  
Northern Atlantic Ocean

The gastropod Drepanochilus pervetus (Stanton) and the bivalve Cytrodaria rutupiensis (Morris) occur in the Mount Moore Formation at Strathcona Fiord, west-central Ellesmere Island, northern Canada. They are the first marine mollusks identified from the Eureka Sound Group of the Canadian arctic islands. These mollusks correlate with Paleocene faunas of the Cannonball Formation of North Dakota and South Dakota, the Prince Creek Formation of northern Alaska, the Barentsburg Formation of Svalbard, and the Thanet and Oldhaven Formations of southeastern England. These occurrences imply that the earliest Tertiary Arctic Ocean molluscan fauna was compositionally distinct from coeval faunas of the northern Atlantic Ocean.

Recent Advances in Microscale Toxicity Testing with Marine Mollusks

2018 ◽  
pp. 423-436
Author(s):  
John W. Hunt ◽  
Brian S. Anderson ◽  
Bryn M. Phillips
Keyword(s):  
Toxicity Testing ◽  
Marine Mollusks ◽  
Recent Advances

scholarly journals Review of fossiliferous localities at Antioquia department, Colombia

2016 ◽  
pp. 46-54 ◽  
Author(s):  
Yenny Paola Valencia Giraldo ◽  
Luis Carlos Escobar Arenas ◽  
Juliana Mendoza Ramirez ◽  
Daniel Delgado Sierra ◽  
Andrés Leonardo Cárdenas Rozo
Keyword(s):  
Sedimentary Rocks ◽  
Review Of The Literature ◽  
Quaternary Deposits ◽  
Digital Map ◽  
Terrestrial Vertebrates ◽  
Metasedimentary Rocks ◽  
Marine Mollusks ◽  
Fossil Leaves ◽  
Petrified Wood ◽  
Fossil Assemblages

Even though only 11.5% of Antioquia’s area has outcrops of sedimentary rocks, a review of the literature and the development of a digital map of fossil localities (27), allows us to conclude that the region has a great palaeontological potential. The data show that Antioquia’s fossil occurrences date from Ordovician (~ 485.4 to ~ 443.8Ma) to Quaternary (~ 2.6Ma to the Present). Moreover, there are macro-fossils belonging to different phyla (i.e. Chordata, Echinodermata, Hemichordata, Mollusca and Trachaeophyta). The oldest paleofauna in the area, consists of graptolites and trilobites recorded in Paleozoic metasedimentary rocks, whereas marine mollusks and echinoderms compose the major fossil assemblages of the Cretaceous. The paleoflora (i.e. fossil leaves and petrified wood) in the area is associated with to the Amagá Formation (Oligocene - Miocene). Finally, fossils of terrestrial vertebrates (i.e. mastodons and horses) are recorded in Quaternary deposits.

scholarly journals Diversity of benthic marine mollusks of the Strait of Magellan, Chile (Polyplacophora, Gastropoda, Bivalvia): a historical review of natural history

ZooKeys ◽  
2020 ◽  
Vol 963 ◽  
pp. 1-36
Author(s):  
Cristian Aldea ◽  
Leslie Novoa ◽  
Samuel Alcaino ◽  
Sebastián Rosenfeld
Keyword(s):  
Research Effort ◽  
Historical Review ◽  
Valid Species ◽  
Marine Research ◽  
Marine Mollusks ◽  
The Pacific ◽  
Strait Of Magellan ◽  
The Strait Of Magellan ◽  
Diversity Studies ◽  
Interesting Area

An increase in richness of benthic marine mollusks towards high latitudes has been described on the Pacific coast of Chile in recent decades. This considerable increase in diversity occurs specifically at the beginning of the Magellanic Biogeographic Province. Within this province lies the Strait of Magellan, considered the most important channel because it connects the South Pacific and Atlantic Oceans. These characteristics make it an interesting area for marine research; thus, the Strait of Magellan has historically been the area with the greatest research effort within the province. However, despite efforts there is no comprehensive and updated list of the diversity of mollusks within the Strait of Magellan up to now. This study consisted of a complete bibliographic review of all available literature that included samples of mollusks in the Strait of Magellan. More than 300 articles were reviewed, covering 200 years of scientific knowledge. There were 2579 records belonging to 412 taxa, of which 347 are valid species. Of the total valid species, 44 (~13%) are considered of doubtful presence in the Strait. This work increases the known richness of mollusks of the Strait of Magellan by 228%; it is also the first report that integrates all available diversity studies of the three most speciose classes of benthic mollusks (Gastropoda, Bivalvia and Polyplacophora) from the Strait of Magellan.

Sign in / Sign up

Export Citation Format

Share Document