Results 41 to 50 of about 7,029 (156)

Necessity knows no law in a snail

open access: yesThe European Zoological Journal, 2017
In the present review, we outline the relationship between starvation and taste-aversive learning (conditioned taste aversion: CTA) in the pond snail Lymnaea stagnalis and introduce the “necessity knows no law” concept. When snails were food-deprived for
E. Ito, Y. Totani, A. Oike
doaj   +1 more source

Acaenoplax — polychaete or mollusc?

open access: yesNature, 2001
Palaeozoic invertebrate fossils may pose severe problems in assigning them to Recent taxa. Sutton et al.1 describe the beautifully preserved and illustrated Silurian fossil Acaenoplax hayae as a “plated aplacophoran” mollusc, interpreting its polychaete-like characters as convergent features.
Steiner, G, Salvini-Plawen, L
openaire   +2 more sources

Occurrence of the invasive species Corbicula fluminea (Bivalvia, Corbiculidae) in the Sapucaí River (São Paulo, Brazil) [PDF]

open access: yesBiotemas, 2010
Biological invasions are gaining increasing importance due to the ecological damage and economic impacts caused by the invaders. Corbicula fluminea (Müller, 1774) is an invasive exotic bivalve introduced into Brazil in the 1970’s, and it has colonized ...
Marina Peixoto Vianna   +1 more
doaj  

Estructura de la comunidad de moluscos y relaciones tróficas en el litoral rocoso del estado Sucre, Venezuela

open access: yesRevista de Biología Tropical, 2006
Se analizó la estructura de la comunidad de moluscos y sus relaciones tróficas en seis localidades del litoral rocoso con diferentes grados de exposición al oleaje (área expuesta y área protegida), en el Estado Sucre, Venezuela.
Johanna Fernández, Mayré Jiménez P
doaj  

Genetic considerations for mollusc production in aquaculture: current state of knowledge.

open access: yesFrontiers in Genetics, 2014
IIn 2012, world mollusk production in aquaculture reached a volume of 15,171,000 tons, representing 23% of total aquaculture production and positioning mollusks as the second most important category of aquaculture products (fishes are the first).
Marcela eAstorga
doaj   +1 more source

Morphological characterization of the hemocytes of the pulmonate snail Biomphalaria tenagophila

open access: yesMemorias do Instituto Oswaldo Cruz, 1993
The blood cells of the pulmonate snail Biomphalaria tenagophila, an important transmiter of the trematode Schistosoma mansoni in Brazil, were examined by ligth and transmission electron microscopy (TEM).
Margherita Anna Barracco   +2 more
doaj   +1 more source

Anaerobically functioning mitochondria: evolutionary perspective on modulation of energy metabolism in Mytilus edulis

open access: yesInvertebrate Survival Journal, 2015
The mitochondrion represents a compelling biological model of complex organelle development driven by evolutionary modification of permanently enslaved primordial purple non-sulphur bacteria.
G B Stefano   +3 more
doaj  

Sydney Basin in the Triassic–a review of the geology, flora and fauna, and ecosystems. The Wianamatta Group

open access: yesRecords of the Australian Museum
As the town of Sydney grew in the 1800’s the search for building material and the later construction of railways in the colony revealed an extensive trove of Triassic fossils.
Graham McLean
doaj   +1 more source

Variation in nuclear genome size in a freshwater snail model system featuring a recent whole-genome duplication

open access: yesRoyal Society Open Science
Conspecifics often share—or are assumed to share—nuclear genome characteristics like nucleotide composition and genome size. These fundamental aspects of the nuclear genome can themselves be the object of natural selection. We here provide the first high-
Maurine Neiman   +3 more
doaj   +1 more source

Norepinephrine and octopamine: linking stress and immune function across phyla [PDF]

open access: yesInvertebrate Survival Journal, 2008
In species from three widely divergent phyla (Arthropoda, Mollusca and Chordata) tyrosine derivatives (norepinephrine or octopamine) mediate a response to acute stress.
SA Adamo
doaj  

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