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Evidence of a chemical defense mechanism in the echiuran worm bonellia viridis echiura bonelliidae






Marine Behaviour & Physiology 6(4): 257-268

Evidence of a chemical defense mechanism in the echiuran worm bonellia viridis echiura bonelliidae

Evidence for the existence of chemical defense in the echiuran B. viridis is provided by investigating the palatability of Bonellia tissues to the shrimp Palaemon elegans, the teleosts Oblada melanura and Mugil labeo, and the anthozoan Anemonia sulcata. Bonellia tissues are highly distasteful to the shrimp. The results with the teleosts and the anthozoan are less clear-cut, though Bonellia extracts are also distasteful to these species.


Accession: 005411062



Related references

Schembri, PJ.; Jaccarini, V., 1979: Evidence of a chemical defence mechanism in the echiuran worm Bonellia viridis Rolando (Echiura: Bonelliidae). Evidence for the existence of chemical defense in the echiuran B. viridis is provided by investigating the palatability of Bonellia tissues to the shrimp Palaemon elegans, the teleosts Oblada melanura and Mugil labeo, and the anthozoan Anemonia su...

Jaccarini, V.; Schembri, PJ., 1977: Feeding and particle selection in the echiuran worm Bonellia viridis Rolando (Echiura, Bonelliidae). The feeding behaviour of Bonellia viridis Rolando is described. Small individual particles ( 94 ± 25 m) are taken onto the proboscis by means of cilia. Individual particles of intermediate size (150±40 m) are taken up by means of a combination o...

Jaccarini, V.; Schembri, P.J., 1977: Feeding and particle selection in the echiurian worm bonellia viridis echiura bonelliidae. The feeding behavior of B. viridis is described. Small individual particles (.ltoreq. 94 .+-. 25 .mu.m) are taken onto the proboscis by means of cilia. Individual particles of intermediate size (150 .+-. 40 .mu.m) are taken up by combined ciliary...

Berec, L.; Schembri, P., J.; Boukal, D., S., 2005: Sex determination in Bonellia viridis (Echiura: Bonelliidae): population dynamics and evolution. In the echiuran worm Bonellia viridis Rolando, the vast majority of sexually undifferentiated larvae metamorphose into dwarf males that live inside the female when exposed to females, but differentiate into females when developing in the absence o...

Schembri, P.J.; Jaccarini, V., 1977: Loco motory and other movements of the trunk of bonellia viridis echiura bonelliidae. Trunk irrigatory and locomotory movements in the echiuran B. viridis consist of peristaltic waves of constriction. Irrigation is by antero-posterior waves. Locomotion in the burrow may be produced in 3 different ways: antikinetic, synkinetic, and...

Jaccarini, V.; Schembri, P.J., 1977: Loco motory and other movements of the proboscis of bonellia viridis echiura bonelliidae. The various proboscis movements of B. viridis are described. At rest, the proboscis is coiled in front of the trunk. The proboscis lobes progress with a velocity of the order of 1 mm/s by means of powerful cilia situated on the dorsal surface of t...

Harris R.R.; Jaccarini V., 1981: Structure and function of the anal sacs of bonellia viridis echiura bonelliidae. The structure of the anal sacs of the echiuran B. viridis Rolando was studied using scanning electron microscopy, transmission electron microscopy, and light microscopy. The characteristic ciliated funnels, which open into the coelom and connect i...

Jaccarini V.; Agius L.; Schembri P.J.; Rizzo M., 1983: Sex determination and larval sexual interaction in bonellia viridis echiura bonelliidae. Sex determination in the echiuran B. viridis Rolando has classically been regarded as depending primarily on the environment of the newly settled larvae. The majority of the sexually undifferentiated larvae settling on an adult female become males...

Jaccarini, V.; Agius, L.; Schembri, P.; Rizzo, M., 1983: Sex determination and larval sexual interaction in Bonellia viridis Rolando (Echiura: Bonelliidae). Sex determination in the echiuran B. viridis Rolando has classically been regarded as depending primarily on the environment of the newly settled larvae. The majority of the sexually undifferentiated larvae settling on an adult female become males...

Agius L.; Jaccarini V.; Ballantine J.A.; Ferrito V.; Pelter A.; Psaila A.F.; Zammit V.A., 1979: Photodynamic action of bonellin an integumentary chlorin of bonellia viridis echiura bonelliidae. The photodynamic activity of bonellin, an integumentary chlorin of B. viridis, is investigated. Bonellin solutions (10-6 M) hemolyze erythrocytes only in the presence of light. Previous illumination (tungsten lamp 2000-4000 lx for 1 h) of the bone...