Effects of an exotic prey species on a native specialist: Example of the snail kite

Cattau, Christopher E.; Martin, Julien; Kitchens, Wiley M.

doi:10.1016/j.biocon.2009.11.022

Cited by 48 publications

(63 citation statements)

References 35 publications

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“…In our feeding study, each chicken was fed snail tissue to equal approximately one adult snail per day. However, adult Snail Kites at Toho can consume an average of 1.1 exotic applesnails per hour while foraging (Cattau et al 2010). Thus, the kites' average rate of applesnail consumption should be more than sufficient to induce AVM because A. hydrillicola is producing toxin at Toho, and the snails are expected to consume this material.…”

Section: Discussionmentioning

confidence: 99%

“…Fewer than 500 breeding pairs of Snail Kites remain in Florida, and a large percentage of the remaining birds nest in the Kissimmee Chain of Lakes, especially Toho (Bowling et al 2012;Reichert et al 2012). The Florida Snail Kite historically fed almost exclusively on the native Florida applesnail (Pomacea paludosa) but now readily consumes the larger exotic P. maculata (Sykes 1987;Darby et al 2007;Cattau et al 2010). Although AVM has never been documented at Toho, the presence of A. hydrillicola may pose another threat to Snail Kites if their primary food source, the exotic apple snail, accumulates AVM toxin.…”

Section: Introductionmentioning

confidence: 99%

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ALTERNATE FOOD-CHAIN TRANSFER OF THE TOXIN LINKED TO AVIAN VACUOLAR MYELINOPATHY AND IMPLICATIONS FOR THE ENDANGERED FLORIDA SNAIL KITE (ROSTRHAMUS SOCIABILIS)

Dodd¹,

Haynie

Williams

et al. 2016

Journal of Wildlife Diseases

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Avian vacuolar myelinopathy (AVM) is a neurologic disease causing recurrent mortality of Bald Eagles (Haliaeetus leucocephalus) and American Coots (Fulica americana) at reservoirs and small impoundments in the southern US. Since 1994, AVM is considered the cause of death for over 170 Bald Eagles and thousands of American Coots and other species of wild birds. Previous studies link the disease to an uncharacterized toxin produced by a recently described cyanobacterium, Aetokthonos hydrillicola gen. et sp. nov. that grows epiphytically on submerged aquatic vegetation (SAV). The toxin accumulates, likely in the gastrointestinal tract of waterbirds that consume SAV, and birds of prey are exposed when feeding on the moribund waterbirds. Aetokthonos hydrillicola has been identified in all reservoirs where AVM deaths have occurred and was identified growing abundantly on an exotic SAV hydrilla (Hydrilla verticillata) in Lake Tohopekaliga (Toho) in central Florida. Toho supports a breeding population of a federally endangered raptor, the Florida Snail Kite (Rostrhamus sociabilis) and a dense infestation of an exotic herbivorous aquatic snail, the island applesnail (Pomacea maculata), a primary source of food for resident Snail Kites. We investigated the potential for transmission in a new food chain and, in laboratory feeding trials, confirmed that the AVM toxin was present in the hydrilla/A. hydrillicola matrix collected from Toho. Additionally, laboratory birds that were fed apple snails feeding on hydrilla/A. hydrillicola material from a confirmed AVM site displayed clinical signs (3/5), and all five developed brain lesions unique to AVM. This documentation of AVM toxin in central Florida and the demonstration of AVM toxin transfer through invertebrates indicate a significant risk to the already diminished population of endangered Snail Kites.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

ALTERNATE FOOD-CHAIN TRANSFER OF THE TOXIN LINKED TO AVIAN VACUOLAR MYELINOPATHY AND IMPLICATIONS FOR THE ENDANGERED FLORIDA SNAIL KITE (ROSTRHAMUS SOCIABILIS)

Dodd¹,

Haynie

Williams

et al. 2016

Journal of Wildlife Diseases

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“…These snails [primarily Pomacea maculata (formerly Pomacea insularum, Hayes et al 2012) and P. canaliculata] have become established in a number of aquatic regions throughout the USA (Lach and Cowie 1999;Cattau et al 2010;Cowie and Hayes 2012;Byers et al 2013). These apple snails have been introduced for use as human food sources (Cowie 2002), biological control agents (Okuma et al 1994;Pointier and Jourdane 2000), and products of the aquarium industry (Cowie 2002).…”

Section: Introductionmentioning

confidence: 98%

Tolerance of embryos and hatchlings of the invasive apple snail Pomacea maculata to estuarine conditions

Martin

Valentine

2014

Aquat Ecol

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One of the most successful groups of invasive consumers worldwide is freshwater snails of the family Ampullariidae, including Pomacea maculata, yet little is known about snail survival and growth in the range of conditions found in estuarine ecosystems. Here, we provide an experimental assessment of P. maculata survivability in estuarine conditions, documenting: (1) egg susceptibility to tidal inundation (2) salinity tolerance of snails, and (3) salinity effects on hatchling growth. Results indicate that estuarine conditions will not limit apple snail colonization in oligohaline and mesohaline reaches of estuaries, with eggs remaining viable when exposed to periodic inundations typical of a tidal regime and modest, albeit reduced, growth and survival at moderate salinities (5 and 10 ppt). For this reason, rapid detection and eradication of P. maculata in estuarine areas is needed to avoid the invasion of snails in these vital, productive environments.

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“…The whole country except Tibetan plateau in remote areas has been threaten or been effected by the alien invasive species in variant degrees [1]. Cattau's study highlights the implications of conservation of native species and also describes the importance of effects that invading species have on the native species, especially those that are endangered, because the subtle influences on behavior may have an important significance on population density [2]. Pine wood nematode had extended into Jiangsu, Zhejiang, Anhui, Shandong and Guangdong in 1999, making 15 million trees cumulatively die [3].…”

Section: Introductionmentioning

confidence: 99%

Development of the Information Management System for Monitoring Alien Invasive Species

Li¹,

Ge²,

Gao³

et al. 2011

Computer and Computing Technologies in Agriculture IV

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Abstract.One of the effective methods to prevent the excessive extending of alien invasive species is to really master their epidemic trends and to take appropriate measures to control them. So, the information management system for monitoring alien invasive species based on the integrated technology was developed to provide the information services for the governments, experts and farmers. The main modules of the system are the sub-system of investigation data management and the sub-system of real-time epidemic reporting in new extending area. In the investigation data management sub-system, the dynamic data of the invasive species in invaded areas can be input into the system. And in the sub-system of real-time epidemic reporting in new extending area, the epidemic information can be reported in E-mail, telephone-voice, short message, voice mail, videoconference or other format with users' telephone, cell phone, personal computer, and personal digital assistant(PDA) based on the integrated technology. The system built the information exchanging bridges among the governments, experts and farmers, letting them to make more effective decisions.

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Effects of an exotic prey species on a native specialist: Example of the snail kite

Cited by 48 publications

References 35 publications

ALTERNATE FOOD-CHAIN TRANSFER OF THE TOXIN LINKED TO AVIAN VACUOLAR MYELINOPATHY AND IMPLICATIONS FOR THE ENDANGERED FLORIDA SNAIL KITE (ROSTRHAMUS SOCIABILIS)

ALTERNATE FOOD-CHAIN TRANSFER OF THE TOXIN LINKED TO AVIAN VACUOLAR MYELINOPATHY AND IMPLICATIONS FOR THE ENDANGERED FLORIDA SNAIL KITE (ROSTRHAMUS SOCIABILIS)

Tolerance of embryos and hatchlings of the invasive apple snail Pomacea maculata to estuarine conditions

Development of the Information Management System for Monitoring Alien Invasive Species

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