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Angiostrongylus cantonensis infection of non-native rats in Mount Makiling Forest Reserve, the Philippines

Published online by Cambridge University Press:  12 August 2020

Leonardo A. Estaño ,
Anna Monica D. Bordado  and
Vachel Gay V. Paller Open the ORCID record for Vachel Gay V. Paller [Opens in a new window]
Leonardo A. Estaño
Affiliation:
Parasitology Research Laboratory, Animal Biology Division, Institute of Biological Sciences, University of the Philippines Los Baňos (UPLB), College 4031, Laguna, Philippines Department of Biology, College of Mathematics and Natural Sciences, Caraga State University, Ampayon, Butuan City, Philippines
Anna Monica D. Bordado
Affiliation:
Parasitology Research Laboratory, Animal Biology Division, Institute of Biological Sciences, University of the Philippines Los Baňos (UPLB), College 4031, Laguna, Philippines Department of Science and Technology – Science Education Institute, Bicutan, Taguig City, Philippines
Vachel Gay V. Paller*
Affiliation:
Parasitology Research Laboratory, Animal Biology Division, Institute of Biological Sciences, University of the Philippines Los Baňos (UPLB), College 4031, Laguna, Philippines
*
Author for correspondence: Vachel Gay V. Paller, E-mail: vvpaller@up.edu.ph
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Abstract

A number of studies had been conducted on rat species diversity in the Philippines, however, there is a dearth of information on the extent of Angiostrongylus spp. infection in various ecological niches. Collection of non-native rat samples occurred in various sampling sites categorized as residential, agricultural and agro-forest in Philippine Mount Makiling Forest Reserve (MMFR) and its adjacent areas . Three species of non-native rats were captured including Rattus tanezumi, Rattus norvegicus and Rattus exulans. Of the total 90 non-native rats collected, 24.4% were found infected with Angiostrongylus cantonensis. Statistical analysis showed significant difference among rat species with highest prevalence observed in R. exulans (42.9%) followed by R. tanezumi (29.8%) and R. norvegicus (7.7%) (P = 0.047). Angiostrongylus cantonensis infection was significantly higher in adults (29.4%) than in juvenile rats (9.1%) (P = 0.050). However, results showed no significant difference in A. cantonensis infection between male (43.3%) and female (18.3%) rats and between wet (31.6%) and dry seasons (19.2%) (P > 0.05). Moreover, this study also revealed that rats from agricultural and agro-forest areas showed significantly higher prevalence than residential areas. With urbanization and the everchanging landscape of MMFR watersheds and buffer zones, zoonotic transmission can pose health threats to the local people.

Keywords

Angiostrongylus cantonensisnon-native ratsPhilippine Mount Makiling Forest Reservezoonosis
Type
Research Article
Information
Parasitology , Volume 148 , Special Issue 2: 6th International Workshop on Angiostrongylus and Angiostrongyliasis, Hilo, Hawai'i, USA, January, 2020 , February 2021 , pp. 143 - 148
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Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press

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