Ingestion of poisonous eggs from the invasive apple snail Pomacea canaliculata adversely affects bullfrog Lithobathes catesbeianus intestine morphophysiology

The poisonous eggs of Pomacea canaliculata (Caenogastropoda, Ampullariidae) hardly have any predator. This invasive snail, listed among the 100 worst invasive species, is a serious crop pest and a vector of a human parasitosis. Females lay eggs in pink-reddish masses, presumably as a warning colorat...

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Detalles Bibliográficos
Autores principales:	Brola, Tabata Romina, Dreon, Marcos Sebastián, Fernández, Patricia Elena, Portiansky, Enrique Leo, Heras, Horacio
Formato:	Articulo Preprint
Lenguaje:	Español
Publicado:	2020
Materias:	Bioquímica Ciencias Naturales pomacea egg defense bullfrog frog small intestine lectin toxicity
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/125028
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-125028
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Español
topic	Bioquímica Ciencias Naturales pomacea egg defense bullfrog frog small intestine lectin toxicity
spellingShingle	Bioquímica Ciencias Naturales pomacea egg defense bullfrog frog small intestine lectin toxicity Brola, Tabata Romina Dreon, Marcos Sebastián Fernández, Patricia Elena Portiansky, Enrique Leo Heras, Horacio Ingestion of poisonous eggs from the invasive apple snail Pomacea canaliculata adversely affects bullfrog Lithobathes catesbeianus intestine morphophysiology
topic_facet	Bioquímica Ciencias Naturales pomacea egg defense bullfrog frog small intestine lectin toxicity
description	The poisonous eggs of Pomacea canaliculata (Caenogastropoda, Ampullariidae) hardly have any predator. This invasive snail, listed among the 100 worst invasive species, is a serious crop pest and a vector of a human parasitosis. Females lay eggs in pink-reddish masses, presumably as a warning coloration of their chemical defenses. Egg ingestion alters rodents’ gastrointestinal tract and is lethal if injected, but its effect on other taxa is unknown. Here we explored the toxic effects of Pomacea canaliculata eggs on bullfrog Lithobathes catesbeianus (Anura, Ranidae). Juvenile bullfrogs were gavaged with egg extracts and their digestive tract analyzed after 24 h and 48 h using histological, immunohistochemical and lectin-histochemical techniques. Toxicity was also evaluated by intraperitoneal injection of eggs extracts. Egg extract ingestion adversely affected small intestine of bullfrogs. Short term (24 h) effects included large, reversible changes of the intestinal wall, villi morphology, and changes in the glycosylation patterns of enterocytes. The mucosal area increased and infiltration of inflammatory cells, mainly eosinophils and macrophages, were observed together with a weak hemorrhage. Most of these changes reversed after 48 h. Besides, intraperitoneal injection of egg extract was nontoxic to bullfrog juveniles and no lethality or behavioral changes were observed, a remarkable difference with egg’ effect on mammals. As a whole, these results indicate that toxins of apple snail eggs reversibly modify gut morphology, which may alter bullfrog physiology limiting their ability to absorb egg nutrients. This study extends the known targets of the apple snail egg defenses against predation to amphibians.
format	Articulo Preprint
author	Brola, Tabata Romina Dreon, Marcos Sebastián Fernández, Patricia Elena Portiansky, Enrique Leo Heras, Horacio
author_facet	Brola, Tabata Romina Dreon, Marcos Sebastián Fernández, Patricia Elena Portiansky, Enrique Leo Heras, Horacio
author_sort	Brola, Tabata Romina
title	Ingestion of poisonous eggs from the invasive apple snail Pomacea canaliculata adversely affects bullfrog Lithobathes catesbeianus intestine morphophysiology
title_short	Ingestion of poisonous eggs from the invasive apple snail Pomacea canaliculata adversely affects bullfrog Lithobathes catesbeianus intestine morphophysiology
title_full	Ingestion of poisonous eggs from the invasive apple snail Pomacea canaliculata adversely affects bullfrog Lithobathes catesbeianus intestine morphophysiology
title_fullStr	Ingestion of poisonous eggs from the invasive apple snail Pomacea canaliculata adversely affects bullfrog Lithobathes catesbeianus intestine morphophysiology
title_full_unstemmed	Ingestion of poisonous eggs from the invasive apple snail Pomacea canaliculata adversely affects bullfrog Lithobathes catesbeianus intestine morphophysiology
title_sort	ingestion of poisonous eggs from the invasive apple snail pomacea canaliculata adversely affects bullfrog lithobathes catesbeianus intestine morphophysiology
publishDate	2020
url	http://sedici.unlp.edu.ar/handle/10915/125028
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bdutipo_str	Repositorios
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Ingestion of poisonous eggs from the invasive apple snail Pomacea canaliculata adversely affects bullfrog Lithobathes catesbeianus intestine morphophysiology

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