Science topic

Mollusca - Science topic

A phylum of the kingdom Metazoa. Mollusca have soft, unsegmented bodies with an anterior head, a dorsal visceral mass, and a ventral foot. Most are encased in a protective calcareous shell. It includes the classes GASTROPODA; BIVALVIA; CEPHALOPODA; Aplacophora; Scaphopoda; Polyplacophora; and Monoplacophora.
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Publications related to Mollusca (10,000)
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In this research, Solamen Vaillanti mollusk (SVM) skin biosorbent was synthesized and used as a low-cost and environmentally friendly adsorbent to eliminate cobalt (Co 2+) heavy metal ion from aqueous solution. The surface morphology and specific surface area of SVM were analyzed by SEM and BET analyses. Also, the impact of various effective factor...
Article
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Relationships between growth increments of internal shell and age was studied in three neritic decapod cephalopods cultured in laboratory through their entire life cycles. The studied cephalopods were the nektic Sepioteuthis lessoniana d’Orbigny, 1826, Sepia pharaonis Ehrenberg, 1831 and Sepiella inermis Van Hasselt, 1835. Most of the relationship...
Article
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The early Eocene greenhouse Earth experienced several transient global warming events, indicated by sharp negative excursions in the stable isotope ratios of carbon and oxygen. A huge amount of CO 2 , enriched with ¹² C, was released in the ocean–atmosphere system leading to warming. The Paleocene–Eocene boundary is demarcated by the most significa...
Article
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Background The marine environment hosts a wide variety of species that have evolved to live in harsh and challenging conditions. Marine organisms are the focus of interest due to their capacity to produce biotechnologically useful compounds. They are promising biocatalysts for new and sustainable industrial processes because of their resistance to...
Article
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Background Scallops (Bivalvia: Pectinidae) present extraordinary variance in both mitochondrial genome size, structure and content, even when compared to the extreme diversity documented within Mollusca and Bivalvia. In pectinids, mitogenome rearrangements involve protein coding and rRNA genes along with tRNAs, and different genome organization pat...
Chapter
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The inventory and conservation status of terrestrial mollusks in Parque Nacional Alejandro de Humboldt, Guantánamo, Cuba was recorded. https://www.rapidinventories.fieldmuseum.org/_files/ugd/d0d95f_6c214d8c7b884ff18aadf42f71c79d4a.pdf?lang=es
Article
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Expanded shellfish mariculture is an important strategy to improve global food security. However, greenhouse gas (GHG) emissions associated with mariculture are a concern when evaluating the benefits of protein production. In this study, we conducted two field campaigns in a constricted tagelus (Sinonovacula constricta) farming system (March 3–5 an...
Article
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The aim of this research is to reveal additional information on the community structure of Mollusca species (Gastropods and Bivalvia) in the coastal region of Foça, a marine protected area in the Aegean Sea of Turkey. Samples were taken from 0.5 to 5 m depth from four different stations with 30x30 quadrants between February 2016 and October 2016, a...
Article
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The coastal lagoons of the Gulf of California support important traditional fisheries and mollusc cultures (generally oysters) and receive important volumes of agricultural, industrial and urban effluents, consumption of the oysters could pose risk to human health. The concentrations of arsenic (As), cadmium (Cd), copper (Cu), iron (Fe), lead (Pb),...
Article
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RESUMEN. La agriculturización es un causante de transformación en los territorios. El actual modelo de agricultura predominante, basado en la aplicación de plagui-cidas para mantener el cultivo saludable y sin competencia, no solo afecta a la especie objetivo sino también a aquellas no blanco, impactando en la biodiversidad local y el funcionamient...
Article
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Members of the parasitic copepod family Pennellidae are highly transformed ecto- or mesoparasites infecting a wide array of marine teleosts. Currently, this family contains more than 20 valid genera. The pennellid genus Cardiodectes Wilson, 1917 is currently known to contain 15 nominal species. Some pennellids exhibit a complex life cycle involving...
Article
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The absence of morphological identification characters, together with the complexity of the fish supply chain make processed seafood vulnerable to cases of species substitution. Therefore, the authentication and the traceability of such products play a strategic role in ensuring quality and safety. The aim of the present study was to detect species...
Article
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New-generation vaccines, formulated with subunits or nucleic acids, are less immunogenic than classical vaccines formulated with live-attenuated or inactivated pathogens. This difference has led to an intensified search for additional potent vaccine adjuvants that meet safety and efficacy criteria and confer long-term protection. This review provid...
Presentation
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The diversity of molluscs living on the summits and bathyal slopes of the seamounts south of the Azores has been investigated since the late 19th century. Particularly the results gathered from the cruises made by the research vessels Hirondelle and Princesse Alice showed a high biodiversity and a high degree of endemism. A second large step change...
Article
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In this work, the presence of species of the slug family Milacidae in Switzerland was investigated by using the barcoding marker cytochrome c oxidase subunit I ( COI ) as well as traits of the body and the genital organs. Currently, three species of Tandonia living in Switzerland in established populations could be reported, i.e., T. rustica , T. b...
Article
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Here we report a rotifer-ciliate-gastropod hyperepibiosis in freshwater canal, Goa, India. A ro-tifer Philodina cf. megalotrocha Ehrenberg, 1832 was found attached on the colony of Epistylis plicatilis Ehrenberg, 1838 which was epibiont on gastropod Pomacea bridgesi (Reeve, 1856). This is first report of a member of Epistylis as an epibiont on Poma...
Article
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The genus Raphitoma Bellardi, 1847 is widely known in the Mediterranean Sea with about 40 species and some still undescribed. One of them is here identified as a new species on morphological characters based on 92 specimens.
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Collagen and chitosan and their combination are the most trending biomaterials at present due to their excellent bioavailability, biodegradability, biocompatibility, nontoxicity, and potent wound healing activity. Chitosan is obtained from chitin, a second-most freely accessible characteristic biomaterial after cellulose. Chitin is not soluble in w...
Article
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Serotonin plays a decisive role in long-term synaptic plasticity and long-term memory in mollusks. Previously, we demonstrated that histone acetylation is a regulatory mechanism of long-term memory in terrestrial snail. At the behavioral level, many studies were done in Helix to elucidate the role of histone acetylation and serotonin. However, the...
Article
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The article is devoted to the study of the parasitic fauna of the common carp (Cyprinus carpio L.) in the Kura River basin in the territory of Azerbaijan and a comparative analysis of data from 1975 years to the present days. Of these, protozoa (Protista - 16 species) and, accordingly, digenetic (Trematoda - 9 species) and monogenetic (Monogenea -...
Article
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From 4 biodiversity repositories (GBIF, NHM, SpeciesLink, and BNDB), 407,570 occurrence records for 10,390 species of plants, animals, and fungi were analyzed to support the identification of areas for conservation and biogeographic studies in Ecuador. The species were assigned to 1,773 higher taxonomic groups to assess the support of endemic areas...
Conference Paper
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Gastropod molluscs forage with their radula, consisting of a thin chitinous membrane with small, embedded teeth. Especially the radular teeth can show a high interspecific diversity in their morphology and structure. This is generally associated with specialisations to distinct food sources, since the teeth are the actual interfaces between the org...
Article
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Agar, which can be degraded by agarase, is composed of agarose and agaropectin. Agarases producing microorganisms have been isolated from many sources, including seawater, marine sediments, marine algae, marine mollusks, fresh water, and soil. The present study was firstly planned to investigate the effect of medium composition and culture conditio...
Article
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This present paper made it possible to update the inventory of benthic malacofauna in the soft bottoms of gulf of Oran. Samples of macrobenthic fauna were collected and separated from the Molluscs from other zoological groups. 116 Molluscs inventoried and determined by the species, including 13 orders, 20 families, 24 genuses and 29 species. Bivalv...
Article
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Bellamya molluscs - Antimicrobial activity.pdf
Article
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The Ovulidae (Gastropoda, Cypraeoidea) is a family of small Mollusca in the order Littorinimorpha, and Sandalia is a very small genus containing only three extant species. In the present study, 132 specimens of Ovulidae were collected, belonging to seven genera and nine species, including 54 Sandalia bridgesi and three Sandalia triticea individuals...
Poster
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Several organisms are known to damage the seedlings in a rice field. However, only few literatures citing reviews of snails in agricultural areas. This paper is presented to assess species richness and relative abundance of terrestrial snails in the 1 ha rice paddies of Brgy. Pagsabangan, Tagum City, Philippines as well as the physical parameters i...
Technical Report
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Volume covering nudibranchs, pteropods, gastropods, bivalves, chitons, octopus. This Field Guide aims to facilitate underwater/topside field identification from visual characters of organisms seen by scuba divers based on Ross Island, Antarctica. Most organisms were identified from photographs with no specimen collection, so these identifications a...
Article
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This is the first record of two non-native terrestrial slug species from Sinaloa, Mexico. Deroceras laeve and Sarasinula plebeia were collected between 2019 and 2022 in Concordia and Mazatlan Municipalities (north-western Mexico). The external morphology and anatomic features of the dissected specimens coincide with the descriptions of each species...
Conference Paper
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Among the great diversity of hydrobiid snails, the taxa that have adapted to live in groundwaters and cave reservoirs are of particular interest. Though this family is extensively studied, most information on its taxonomy, diversity, and ecology is based on material from European countries, whereas other regions remain relatively understudied. Here...
Article
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Allergic reactions to food constituents or additives can be systemic, digestive and cutaneous and may follow one or more of the four known types of allergic reactions (immediate or delayed). Almost all common constituents of traditional or industrially prepared rations are likely to be or contain allergens: meat of all species (mammals, fish, mollu...
Conference Paper
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Molluscs are capable of foraging on a variety of food sources, which is, in most taxa, enabled by the radula, one important autapomorphy of this phylum. The radula can consist of a thin, chitinous membrane with rows of embedded teeth, which vary in shape, mechanical, and chemical properties between taxa. Since the teeth serve as actual interfaces b...
Article
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The gastropod, mangrove snail Cerithidea decollata is an intertidal invertebrate that inhabits the mangroves, especially in Avicennia marina, distributed along the Western Indian Ocean. This study aimed at deepen the economic and social importance of the mangrove snail and to analyze its contribution to food security for the population of Quelimane...
Article
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Annotation The life cycles of most helminth species involve molluscs, which act as intermediate hosts. Elucidation of the role of certain species of terrestrial and freshwater molluscs. of terrestrial molluscs by larvae of helminths is much wider, they revealed cercariae (metatsercariae) of trematodes, cystocercaids, cestodes and larvae of nematode...
Article
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Background Scallops are among the best-studied bivalve mollusks. However, adult nervous system and neurogenesis studies of scallops are limited. Here, we studied the localization of neurotransmitters (serotonin/5-HT, FMRFamide, catecholamines) in adult ganglia and larvae of Azumapecten farreri using histochemical and immunohistochemical methods. R...
Article
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This study defines the optimal parameters that allow the use of waste mollusk shells (WS) to remove heavy metals from three mining and metallurgical leachates. First, the influence of parameters such as pH, contact time, initial metal concentration, adsorbent dose and the presence of co-ions in Cu2+, Cd2+, Zn2+ and Ni2+ adsorption was investigated...
Article
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Shell formation is a dynamic process involving organic matrix secretion and calcification. In this study, we characterized shell morphogenesis during larval development in Crassostrea gigas. Using scanning electron microscopy (SEM) and fluorescence staining, we demonstrated that shell field, the first morphologically distinguishable shell-forming t...
Conference Paper
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Molluscs are a diverse phylum in coastal lagoons. Numerous gastropods and bivalves taxa that inhabit such lagoons display broad ranges of optima and tolerances with respect to temperature and salinity. We present the taxonomic composition and spatial distribution of mollusc assemblages (live-collected with soft parts intact or paired shells for Biv...
Article
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Crushed shells from three bivalve mollusc species (mussel, oyster and scallop) in two particle size ranges (63–150 μm and 710–1180 μm) were tested for their ability to remove dissolved copper and zinc ions from synthetic stormwater in a column. For comparison, zeolite (1–2 mm), which is commonly used for heavy metal ion capture, was also assessed....
Article
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Understanding metapopulation dynamics is critical for effective species conservation, but they are not always considered for marine species due to difficulties in assessing connectivity in marine environments. This is particularly true for species that are rare or threatened, as demographic and life history data are usually sparse. We employ Lagran...
Article
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La presencia de bacterias del género Vibrio spp., en los sistemas de producción de moluscos bivalvos, es un factor de riesgo considerable en la producción de los mismos, este documento, presenta el procedimiento y los resultados obtenidos en un bioensayo realizado con larvas de ostra del Pacífico Crassostrea gigas desafiadas con una cepa patogénica...
Article
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Despite the attempts that have started since the 1960s, not even a single cell line of marine molluscs is available. Considering the vast contribution of marine bivalve aquaculture to the world economy, the prevailing viral threats, and the dismaying lack of advancements in molluscan virology, the requirement of a marine molluscan cell line is indi...
Article
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Caracol Chileno de Parchappe Chilina parchappii (d'Orbigny, 1835) Phylum Mollusca Clase Gastropoda Subclase Heterobranchia Superfamilia Chilinoidea Familia Chilinidae Género Chilina Descripción: Caracol dulceacuícola con concha alargada, de contorno oval, delgada y translúcida, con hasta cinco vueltas y 35 mm de largo. Espira alargada con ápice pun...
Article
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The treatment of inflammatory and immune-related diseases due to dysfunctioning of the immune system necessitates modulation of the immune response through immunomodulatory compounds. Marine environments are considered as a new frontier for health benefit product implementations. Marine biodiversity is still a low explored resource, despite it is e...
Preprint
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Illustrated species account of Cuthona nana (Alder & Hancock, 1842) Mollusca, Nudibranchia.
Article
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The immune repertoires of mollusks beyond commercially important organisms such as the pacific oyster Crassostrea gigas or vectors for human pathogens like the bloodfluke planorb Biomphalaria glabrata are understudied. Despite being an important model for neural aging and the role of inflammation in neuropathic pain, the immune repertoire of Aplysi...
Article
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Heavy metals in the marine environment pose risk to mollusks and cause undesirable effects to the environment. This study is focused on the potential-threat of trace metals to locally available univalve in the coastline of Balamban, Cebu, Philippines. Sediment along with univalve mollusk samples were collected in the sites. The sediment sample was...
Article
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The settlement of molluscs’ larvae of and other biofouling organisms on experimental collectors was studied, with particular reference Great Mediterranean scallop, Pecten jacobaeus. Three types of experimental collector made from vegetable sacks, modelled based on the collectors used in Japan, were placed in four existing fish and shellfish farms l...
Chapter
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In Paraná, mangroves are distributed along the Estuarine Complex of Paranaguá and Baía de Guaratuba, totaling 31,199.1 ha. The mangrove ecosystem makes up the coastal landscape in conjunction with rainforest areas and restingas in sandbanks. The typical mangrove plant species found in this location are the red mangrove (Rhizophora mangle), the whit...
Article
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Tyrosinase is a type-3 copper protein with six conserved histidine residues within the copper-binding sites. It participates in mollusk nacre formation. Here, we identified nacreous-layer-specific tyrosinases (NLSTyr) from Pinctada fucata martensii ( PmTyr-4 and PmTyr-6 ), as well as their homologs in Pinctada maxima ( PmaxTyr and PmaxTyr4 ) and Pi...
Article
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Freshwaters are under accelerated human pressure, and mollusk communities are among its most sensitive, threatened, and valuable components. To the best of our knowledge, the overall effects of damming, environment, space, time, and invasive alien mollusk species, on structural and functional responses of native mollusk communities were not yet com...
Article
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The freshwater apple snail, Pila globosa is one of the most abundant and commercially valued molluscs. The present condition of P. globose in south west region is alarming due to indiscriminate killing for Prawn farming. The present study was aimed at elucidating the breeding behavior and reproduction process of P. globosa. The natural breeding exp...
Article
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An up-to-date list of exclusively cave-dwelling gastropod species recorded in Brazil is presented including updated taxonomy, detailed geographic information, and illustration of types. The list includes 18 cave-exclusive (troglobitic) gastropods encompassing 15 land and three freshwater species, with the status of further species pending additiona...
Article
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Oysters face a complex and changeable environment in the intertidal zone. Heat stress is the main cause of their mass summer deaths. Several important genes are identified to be associated with heat response for oysters. However, regulation of these heat response genes in oysters remains largely unknown. In this study, 27 RNA-seq datasets are used...
Conference Paper
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The Neogene marine sequence of the Dwarka Basin, western India, harbours a rich haul of diverse molluscan fossils like bivalves and gastropods. The early Miocene succession (i.e., Nandana Member within Gaj Formation) hosts a siliciclastic shell bed and is faunistically dominated in terms of abundance by the turritelline gastropods (constituting ~96...
Article
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Freshwater and saltwater molluscs are potential uses to mankind. So, our present project work is “comparative study on the antimicrobial activity, anti-oxidant, anti-diabetic and anti-inflammatory property of fresh water mollusks (Bellamya bengalensis) and marine molluscs (saccostrea cucullata)". Antimicrobial activity of Saccostrea cucullata a...
Article
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Freshwater snail, Angulyagra microchaetophoraFam.Viviparoidea belongs to the phylum Mollusca and to the class Gastropoda and is a species found abundantly in states of Assam, Manipur and Nagaland. A common fresh water snail has been selected for its shell which has a unique dye degrading property. Herein we report the findings of how the enzyme Der...
Article
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Studies of the composition of carotenoids in the Black Sea bivalve mollusks Mytilus galoprovincialis, Crassostrea gigas, Anadara kagoshimensis, Cerastoderma glaucum, Chamelea gallina, Polititapes aureus and their closely related species showed changes depending on their habitats in the World Ocean (W.O.). The most obvious differences were noted bet...
Preprint
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Illustrated species account of Edmundsella pedata (Montagu, 1816) Mollusca, Nudibranchia, including comparison with Flabellina affinis (Gmelin, 1791) and Paraflabellina ischitana (Hirano & T. E. Thompson, 1990).
Conference Paper
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The members of genus Vibrio have acquired a great importance because several are associated with human disease. These members are autochthonous to aquatic environments mcludimg estuarine, coastal waters and sediments worldwide, and some species are well-known pathogens of marine organisms including fish, crustaceans, corals and mollusks. The aim of...
Article
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RESUMEN Setipellis stigmatica (Cepolidae) es un caracol hermafrodita, endémico cubano, cuya conducta de apareamiento se desconoce. Se describen su conducta de apareamiento y uso del aparato del dardo, en cautiverio, incluidos datos sobre morfología del dardo y espermatóforo. El trabajo se realizó en noviembre 2012 y entre enero-febrero 2016. Se rec...
Article
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In theyears2020–2022, asurveywascarriedoutwiththeaimofcontrollingtheentomofauna present in seven Sardinian snail farms. The sampling was carried out during the spring–summer and autumn–winter periods, corresponding to the production cycles of the Helix aspersa snails (Müller, 1774), the species most frequently bred in snail farms. The samples were...
Article
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Bioturbation is recognized as a deterministic process that sustains the physicochemical properties of the freshwater ecosystem. Irrigation, ventilation, and particle reworking activities made by biotic components on sediment beds influence the flow of nutrients and transport of particles in the sediment–water interface. Thus, the biogenic disturban...
Article
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Suboptimal nutrition may contribute to lionfish (Pterois volitans and Pterois miles) health issues in managed care environments. This study’s objective was to establish and compare whole blood fatty acid profiles in wild and aquarium lionfish. Whole blood samples were dried onto specialized high-quality paper cards from wild, invasive lionfish harv...
Article
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Rocky tide pools are transition environments whose communities are affected by sudden temperature, salinity and nutrient fluctuations. Furthermore, these environments are exposed to multiple stressors and can be easily altered by human trampling. In particular, specific studies on rock pool heterobranchs communities are lacking for the Mediterranea...