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Although certainly present, opercula are not known in Asgardospira, Lytospira or Lesueurilla (or in most fossil gastropods) but several euomphalines have a prominent calcified operculum (Yochelson & Linsley 1972; Yochelson 1979; Peel 2015).
Muscle scars in euomphaline gastropods from the Ordovician of Baltica/Lihaste kinnitusjaljed euomphaliinsetel tigudel Baltika Ordoviitsiumis
furnieri opercula that were prepared according to CASTRO-ROSAS & ESCARTIN (2002) were also used in this study.
Biofilm formation by Vibrio parahaemolyticus on different surfaces and its resistance to sodium hypochlorite/ Formacao de biofilme por Vibrio parahaemolyticus em diferentes superficies e resistencia ao hipoclorito de sodio
The fruits have one to several locules, each with a single seed, with or without specialized structures for germination, such as stopper-like opercula or valves that hinge open.
Fruit Morphology and Anatomy of the Spondioid Anacardiaceae
A second structure that can be used to determine the age of gastropods is the operculum (plural opercula): a shield-like plate, often wholly organic, that the gastropod uses to close off its aperture and protect the soft body tissues inside the shell from predatory attacks and in intertidal species to prevent potential desiccation.
TECHNIQUES FOR ESTIMATING THE AGE AND GROWTH OF MOLLUSCS: GASTROPODA
Neurogenesis suggests independent evolution of opercula in serpulid polychaetes.
Radiolar Eyes of Serpulid Worms (Annelida, Serpulidae): Structures, Function, and Phototransduction
Three eggs had their opercula detached and shells destroyed to allow examination and measurement of the operculum and internal micropylar plate.
Description of the female, egg and first instar nymph of the stick insect Paraphasma pautense (Phasmatodea: Pseudophasmatidae) from Southeast Brazil
Behavioral responses which include colouration of the fish skin and opercula colouration were observed.
Effects of Aluminium Phosphide on the Behaviour, Haematology, Oxidative Stress Biomarkers and Biochemistry of African Catfish (Clarias gariepinus) Juvenile
It is totally covered by the fronto-parietal and temporal opercula.
Insulectomy for insular and peri-insular seizures could be an ideal and safe approach?/La insulectomia podria ser un abordaje ideal para crisis insulares y peri-insulares?
Abstract--Aging of tautog (Tautoga onitis) has historically required sacrificing fish to obtain opercula and otoliths.
Identification of a nonlethal method for aging tautog (Tautoga onitis)
The combination group showed significant increases in metabolism in a number of regions, including the right hemisphere cluster (insula/putamen/ amygdala/superior and middle temporal region); the left middle temporal pole fusiform gyrus and anterior temporal region; the right middle and inferior frontal region; and the right rolandic opercula.
Omega-3 and physical, mental training slowed decline
The opercula in both sexes bear small and irregularly arranged spots (Esmaeili et al.
Threatened fishes of the world: Aphanius pluristriatus (Jenkins 1910) (Cyprinodontidae)
We observed gill lice on gills (n = 34; 46.0% of all those observed), branchial rims (n = 22; 29.7% of all those observed), opercula (n = 17; 23.0% of all those observed), and at the base of one pectoral fin (n = 1; <1% of all those observed) of kokanee salmon.
Prevalence and intensity of the parasitic copepod (Salmincola californiensis) on kokanee salmon (Oncorhynchus nerka) in a reservoir in Colorado

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