Results 181 to 190 of about 241,574 (228)

Regulation of Schistosoma infections in snail populations: a modelling framework with inheritable resistance in snails

van Dijk NJ, de Vlas SJ, Emery AM, Webster BL, Knopp S, Ali SM, Pennance T, Coffeng LE.   +7 more
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Antioxidant defense system in the apple snail eggs, the role of ovorubin

Archives of Biochemistry and Biophysics, 2004
A novel role of ovorubin as a protection system against oxidative damage in eggs from Pomacea canaliculata was investigated. Carotenoid composition, and their antioxidant capacity, as well as the carotenoid-apoprotein interaction, were studied for this lipoglycocarotenoprotein.
Guillermo Schinella, Horacio Heras
exaly   +3 more sources

Supercooling ability is surprisingly invariable in eggs of the land snail Cantareus aspersus

Cryobiology, 2007
From an ontogenetic point of view, invertebrate eggs are generally the most freezing intolerant stage of a species. Development state, water content and acclimation may affect their supercooling ability. In this study, we measured fresh mass, water content and temperature of crystallisation (T(c)) of eggs of the edible land snail Cantareus aspersus ...
Philippe Vernon, Armelle Ansart, Luc Madec   +2 more
exaly   +5 more sources

Pesticide Concentrations in Snail Kite Eggs and Nestlings in Florida

Condor, 1985
Concentrations of organochlorine pesticides were first reported in the Snail Kite (Rostrhamus sociabilis) and its principal prey, the apple snail (Pomacea paludosa), by Lamont and Reichel (Auk 87:158-159, 1970), using material from Conservation Area 2A (CA2A) and Loxahatchee National Wildlife Refuge (NWR) in the northeastern part of the Florida ...
Paul W Sykes
exaly   +2 more sources

Chemical Mediation of Egg Capsule Deposition by Mud Snails

Journal of Chemical Ecology, 2002
Mud snails (Ilyanassa obsoleta = Nassarius obsoletus = Nassa obsoleta) deposit eggs in protective capsules on hard substrata in soft bottom environments. We studied sites of egg capsule deposition and snail movement responses to odors to determine if chemoreception plays a role in deposition site selection.
Dan, Rittschof, Prasad, Sawardecker, Caroline, Petry   +2 more
openaire   +2 more sources

EGG COUNTING SNAILS

Journal of Experimental Biology, 2003
Laying eggs is hard work, and risky with the next generation's future invested in a single clutch. So snails only ovulate when the time and place is right. But how land snails control this costly process wasn't clear until Ronald Chase began investigating a branch of the intestinal nerve that ...
openaire   +1 more source

The Eggs and Egg-Laying Habits of Some Midwestern Land Snails

Transactions of the Kansas Academy of Science (1903-), 1963
During the past few years laboratory populations of twenty-four species of Nebraska's land snails have been established as part of a continuing survey of the gastropod fauna of the state. Observations on the eggs and aspects of the reproductive activity of some of these gastropods are recorded here as a contribution to an area of the natural history of
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The Egg-Laying Behavior of the Pond Snail: Electrophysiological Aspects

1984
The ovulation hormone of the pond snail Lymnaea stagnalis is produced by the caudo-dorsal cells (CDCs) of the cerebral ganglia [1]. The CDCs secrete their products (see also Geraerts et al., this volume) during a 30 min period of repetitive spiking activity termed the afterdischarge [2].
Ter Maat, A., Jansen, R.
openaire   +2 more sources