Publication Date:
2021-05-19
Description:
Todos los organismos han desarrollado evolutivamente mecanismos que les permiten
defenderse de otros, garantizar su permanencia temporalmente y evitar el ataque de depredadores. Uno de
estos mecanismos es la defensa química, mediante la cual los depredadores potenciales de los organismos
son disuadidos de consumir su presa. En este estudio se evaluó la capacidad disuasora de los extractos
orgánicos crudos de quince esponjas marinas del Caribe colombiano, sobre el pez arrecifal generalista
Stegastes partitus. Se encontró que el extracto de Cribrochalina infundibulum actuó como un atrayente
para estos depredadores potenciales, mientras que sólo los extractos de las esponjas Dragmacidon
reticulata, Petromica cyocaliptoides, Neopetrosia proxima, Myrmekioderma gyroderma y Biemna
cribaria fueron disuasores; además, se observó que esas tres últimas esponjas también cuentan con
aparentes defensas físicas, indicando que la presencia de mecanismos de defensa químicos y físicos no
son necesariamente excluyentes.
Description:
Evaluation of the feeding deterrent potential of crude organic extracts from fifteen
marine sponges. Organisms have developed diverse mechanisms during their evolution, to defend
themselves from predators and competitors, in order to ensure temporal permanence. One of these
mechanisms is chemical defense. Chemical substances are used by some organisms to deter potential
predators from devouring them. This paper evaluates the efficacy of the organic crude extracts of fifteen
different marine sponges from the Colombian Caribbean to deter a potential predator, the generalist
reef fish Stegastes partitus. It was found that Cribrochalina infundibulum extract acted as a feedingattractant
to this particular predator, while only the extracts from Dragmacidon reticulata, Petromica
cyocaliptoides, Neopetrosia proxima, Myrmekioderma gyroderma and Biemna cribaria were feeding deterrants; it was also observed that the latter three also presented apparent physical defenses, showing
that chemical and physical defenses are not necessarily excluding.
Description:
INVEMAR
Description:
Published
Description:
Feeding deterrence; Crude organic extract; Marine sponges
Keywords:
Chemical ecology
;
Feeding deterrents
;
Sponges
;
Predators
;
Feeding
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
,
Article
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