Results 51 to 60 of about 11,679 (161)

Life table estimates of the invasive snail Physa acuta Draparnaud, 1805, occurring in India

open access: yesEkológia (Bratislava), 2017
The life table characteristics of the invasive snail Physa acuta were assessed in the laboratory using the individuals occurring in a newly colonised area in Burdwan, West Bengal, India.
Saha Chilka   +4 more
doaj   +1 more source

Mating and egg-laying behaviour of the Southeast Asian apple snail Pila pesmei (Morlet, 1889) (Caenogastropoda, Ampullariidae) [PDF]

open access: yesZooKeys
The apple snail Pila pesmei is an economically valuable freshwater snail in mainland Southeast Asia whose populations have recently dramatically declined.
Supunya Annate   +3 more
doaj   +3 more sources

The Developmental Rate and Oxygen Consumption of Snail Eggs at Various Temperatures

open access: yesZeitschrift für Naturforschung B, 1965
Niedrige Temperaturen verzögern die Eientwicklung der Schnecken Australorbis glabratus und Lymnaea stagnalis stärker als ihren Sauerstoffverbrauch. Folglich bedarf die Embryonalentwicklung bei Minimaltemperaturen größerer Energie durch den Stoffwechsel.
openaire   +2 more sources

Oxygen Availability and Embryonic Development in Sand Snail (Polinices Sordidus) Egg Masses [PDF]

open access: yesJournal of Experimental Biology, 1995
ABSTRACT The oxygen transport physiology of sand snail Polinices sordidus egg masses was investigated using oxygen microelectrodes and open-flow respirometry. P. sordidus eggs are laid in a jelly matrix that rapidly absorbs water and swells into a horseshoe-shaped sausage. The average diameter of these sausages is 37 mm.
openaire   +2 more sources

The Influence of Self-fertilization performance and Copulation Behaviour in Reproduction by Cross-fertilization in Groups of Biomphalaria tenagophila (Mollusca, Planorbidae)

open access: yesMemorias do Instituto Oswaldo Cruz, 1997
The following hypotheses were tested for groups of simultaneous hermaphrodites Biomphalaria tenagophila: (a) snails that have low reproductive success during the process of self-fertilization do not increase their reproductive success after the end of ...
Freitas June Springer de   +2 more
doaj  

Schistosoma “Eggs-Iting” the Host: Granuloma Formation and Egg Excretion

open access: yesFrontiers in Immunology, 2018
Schistosomiasis is a major cause of morbidity in humans invoked by chronic infection with parasitic trematodes of the genus Schistosoma. Schistosomes have a complex life-cycle involving infections of an aquatic snail intermediate host and a definitive ...
Christian Schwartz   +3 more
doaj   +1 more source

Effects of AgNPs on the Snail Biomphalaria glabrata: Survival, Reproduction and Silver Accumulation

open access: yesToxics, 2019
Silver nanoparticles (AgNPs) are used intensively in medical and industrial applications. Environmental concerns have arisen from the potential release of this material into aquatic ecosystems.
Eduardo Cyrino Oliveira-Filho   +6 more
doaj   +1 more source

Technical note: Sustainable snail meal enhances duck egg production and health

open access: yesPoultry Science
This study evaluated the effects of replacing soybean meal with snail meal on laying performance, egg quality, and blood parameters in laying ducks. Five experimental diets with graded levels of soybean meal replacement by snail meal were formulated: T0 (0% replacement), T1 (25% replacement), T2 (50% replacement), T3 (75% replacement), and T4 (100 ...
Yunqian He, Saikun Pan, Shengjun Wu
openaire   +2 more sources

Dietary inclusion of golden apple snail egg powder as a natural astaxanthin source modulates MUC2 gene expression without affecting performance or organ weight in laying pullets

open access: yesItalian Journal of Animal Science
Golden apple snail eggs (GASE) is a potential natural source of astaxanthin, a carotenoid with notable antioxidant properties. However, the presence of antinutrients within GASE raises concerns regarding their effective utilisation in animal diets.
Suluh Nusantoro   +4 more
doaj   +1 more source

Modelación matemática del consumo de presas y el flujo de energía asociado a la reproducción de Rostrhamus sociabilis (Aves, Falconiformes) [PDF]

open access: yesAnimal Biodiversity and Conservation, 2017
Mathematical model of prey consumption and energy flow associated with breeding in Rostrhamus sociabilis (Aves, Falconiformes) The snail kite (Rostrhamus sociabilis) is a bird of prey that has permanent populations and is fairly common in Cuba.
Denis, D., Rodríguez–Ochoa, A.
doaj  

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