Impact of invasive apple snails on the functioning and services of natural and managed wetlands | Semantic Scholar (2024)

This review aims to analyse the mechanisms of the impacts that these invasive Pomacea provoke or may provoke and to better understand the environmental impacts of invasive Pomace and their underlying mechanisms.

To understand Island Apple Snail invasion success in seasonal wetlands, more research is needed on the relative importance of landscape- versus local-scale wetland characteristics and how resources such as preferred forage versus egglaying sites affect snail-population growth.

Overall, this study found higher numbers of female P. maculata than males, and that females preferred to lay egg clutches on culverts as opposed to other available substrates, which indicates that these populations are successfully reproducing throughout the year.

High tolerance to prolonged drying and rapid recovery after re-immersion for 3 Pomacea species is found, indicating resistance to drying conditions and resilience during recovery.

Overall plant community compositions in LTOHO and WCA3A appeared less impacted than expected based on previous reports of P. maculata invasions, and both native and non-native apple snail species were found in many W CA3A sites following P. Maculata invasion.

This review focused on the basic aspects of introduction, biology, damage and management of invasive Pomacea spp.

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This study demonstrates how an herbivore may trigger a shift from clear water and macrophyte dominance to a turbid state dominated by planktonic algae, and is detrimental to the integrity and functioning of wetland ecosystems, and to the services these provide in Southeast Asia.

The results indicated that P.canaliculata could have out-competed native herbivorous snails from the pond by predation on their juveniles or eggs, and management strategies should be developed to prevent its further spread.

The results indicate that common carp can be an effective biological control agent against the invasive apple snail, but caution should be taken about its potential to reduce wetland floral and faunal diversity.

Knowledge about intra-specific differences in ecological performance may help deepen the understanding of the processes that underlie population dynamics in invertebrates such as gastropods, and help develop control strategies for invasive golden apple snails.

It is suggested that the negative effect the golden apple snail had on the growth of these plant species in field enclosures is present in the natural environment as well and could have serious negative effects on invaded freshwater ecosystems in this region.

Wetland restoration in areas invaded by P. insularum should focus on emergent structural species with low palatability, as although apple snails fed on invasive plants at a high rate, their consumption of many native species was even greater.

It is indicated that, due to their higher nutritional value and lower chemical and physical defences, cultivated macrophytes are in general desirable for the apple snail which may partly explain its successful invasion into wet agricultural areas in Asia.

To evaluate potential impacts of introduced apple snails relative to the native species, this work investigated plant species preference, consumption rates, growth rates, and growth efficiencies in five introduced and the single native species across eight native macrophytes common in the Everglades.

Compared snail density in habitats with (wet prairie) and without (slough) emergent macrophytes, as well as evaluating the effects of structural attributes within the broad wet prairie habitat type, indicate that wet prairies supports greater snail densities than Nymphaea- dominated slough.

Through increased numbers and difficult detection, juvenile applesnails could feasibly consume a greater proportion of plant biomass than adult iPhones and this may partially underlie the success of global applesnail invasions.

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