scholarly journals Prevalencia de leptospirosis en roedores sinantrópicos de la Ciudad de Corrientes, Argentina. Período mayo 2005–junio 2008

2008 ◽  
Vol 19 (2) ◽  
pp. 150 ◽  
Author(s):  
G. Marder ◽  
R. M. Ruiz ◽  
O. R. Bottinelli ◽  
H. A. Peiretti ◽  
L. Zorzo ◽  
...  
Keyword(s):  
Mus Musculus ◽  
Rattus Rattus

<p>La leptospirosis es una zoonosis causada por bacterias del género Leptospira sp., las cuales regularmente provocan brotes de la enfermedad en Argentina, donde el conocimiento de su epidemiología es incompleto. Los roedores (ratas y ratones sinantrópicos y silvestres) son los principales reservorios de leptospirosis en nuestro medio. El objetivo del estudio fue investigar la presencia de Leptospira sp. en roedores de la Ciudad de Corrientes, Argentina, así como la especie, sexo y edad de los ejemplares positivos a leptospirosis. Fueron capturados 101 especimenes, cuyo tejido renal fue utilizado para demostrar la presencia de Leptospira sp. mediante microscopio de campo oscuro a partir de cultivos de 15 días hasta un máximo de 6 meses. La tasa de positividad detectada fue de 58,4%, con una alta proporción de animales machos de la especie Rattus rattus. Solamente pudo capturarse un ejemplar de Mus musculus, que resultó infectado. Se concluye que la alta prevalencia de leptospirosis en roedores del área en estudio constituye un alarmante factor de riesgo de infección en animales domésticos y seres humanos.</p>

scholarly journals Glodavci u skladištima poljoprivrednih proizvoda – štetnost i suzbijanje

2021 ◽  
Vol 44 (6) ◽  
pp. 42-48
Author(s):  
Dinka Grubišić ◽  
Ivan Juran ◽  
Mirjana Brmež ◽  
Maja Šurlog ◽  
Viktorija Sever ◽  
...  
Keyword(s):  
Mus Musculus ◽  
Rattus Norvegicus ◽  
Rattus Rattus

Glodavci su važni štetnici uskladištenih poljoprivrednih proizvoda. Uz zadovoljenje osnovnih prehrambenih potreba, štetne vrste u skladištima nalaze povoljne uvjete za razvoj i razmnožavanje te zaštitu od prirodnih neprijatelja. Najštetnije vrste glodavaca u skladištima Republike Hrvatske jesu štakori vrsta Rattus norvegicus i Rattus rattus te domaći miš Mus musculus. Osim što se hrane uskladištenim proizvodima, rasipaju ih, onečišćuju urinom, izmetom, dlakom i slinom, navedene vrste rezervoari su zoonozama koje utječu na zdravlje ljudi, te domaćih i divljih životinja. U Republici Hrvatskoj u populacijama sitnih glodavaca dokazani su uzročnici Lajmske borelioza, trihineloze, leptospiroze, Q groznice i hemoragijske vrućice s bubrežnim sindromom. Utvrđene su i višestruke infekcije glodavaca uzročnicima zoonoza. Redovito praćenje brojnosti glodavaca važno je u svrhu pravovremenog suzbijanja te smanjenja materijalnih gubitaka, ali i u svrhu sprječavanja pojave epidemija zoonoza. Uz preventivne mjere koje podrazumijevaju održavanje higijene prostora te održavanje infrastrukture, čime sprječavamo privlačenje i nastanjivanje glodavaca u skladištima, provodi se i kontinuirana deratizacija koja uključuje primjenu mehaničkih, fizikalnih i kemijskih mjera zaštite.

Ticks on small mammals from an ecotone region impacted by rural activities in Brazil

2021 ◽  
Vol 26 (2) ◽  
pp. 427-437
Author(s):  
Rafael Quirino Moreira ◽  
Vanessa Do Nascimento Ramos ◽  
Adriane Suzin ◽  
Diego Garcia Ramirez ◽  
Paulo Ricardo De Oliveira Roth ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Small Mammals ◽  
Mus Musculus ◽  
Tick Species ◽  
Rattus Rattus ◽  
Riparian Forests ◽  
Forest Fragments ◽  
Cerrado Biome ◽  
Didelphis Albiventris

We evaluated the role of communities of small mammals from three distinct areas in a region of Cerrado mixed with Atlantic Forest remains for maintenance of tick fauna. Thirty-nine marsupials (Gracilinanus agilis, n = 34; Marmosa paraguaiana, n = 4; Didelphis albiventris, n = 1) and 33 rodents (Oecomys cleberi, n = 10; Nectomys squamipes, n = 4; Calomys tener, n = 4; Hylaeamys megacephalus, n = 4; Akodon sp., n = 3; Rattus rattus, n = 3; Cerradomys subflavus, n = 2; Mus musculus, n = 2; Rhipidomys macrurus, n = 1) were captured. Solely G. agilis and the four rodent species (N. squamipes, R. macrurus, C. subflavus and Akodon sp.) were infested. Four tick species were collected (Amblyomma dubitatum, Amblyomma sculptum, Ixodes loricatus and Ornithodoros mimon). A. dubitatum was the most abundant tick species on hosts. Capture success was higher in the dry season, but the infestation was similar in both seasons. Forested habitats, particularly riparian forests, resulted in higher number of hosts and ticks collected (from hosts and from vegetation), compared to pastures and anthropized sites. The association between C. subflavus and I. loricatus and between A. dubitatum and N. squamipes observed here is the first recorded in Cerrado biome. Areas with more patches of forest, including the Atlantic Forest fragments, tend to present a richest community of small mammals and associated ticks.

scholarly journals The successful eradication of introduced roof rats (Rattus rattus) from Buck Island using diphacinone, followed by an irruption of house mice (Mus musculus)

2007 ◽  
Vol 34 (2) ◽  
pp. 108 ◽  
Author(s):  
Gary W. Witmer ◽  
Frank Boyd ◽  
Zandy Hillis-Starr
Keyword(s):  
United States ◽  
Mus Musculus ◽  
Management Strategies ◽  
Rattus Rattus ◽  
The United States ◽  
Sea Turtle ◽  
Pest Species ◽  
National Monument ◽  
Park Service ◽  
Bait Stations

The United States National Park Service and the United States Wildlife Services made a planned and sustained effort to eradicate the introduced roof rats (Rattus rattus) from Buck Island Reef National Monument in the Caribbean Sea during 1998–2000. The rats were causing substantial damage to a variety of the 80-ha island’s floral and faunal resources. An island-wide grid of elevated bait stations containing anticoagulant (0.005% diphacinone; 50 ppm) rodenticide bait blocks were used to eradicate the rats. The bait stations were modified several times to assure ready access by rats while minimising access by non-target animals, especially crabs and birds. Numerous post-project trapping sessions over six years resulted in no rat captures, suggesting that, indeed, the rats had been eradicated from the island. No non-target losses resulting from the baiting program were observed by field personnel, but they noted what appeared to be a recovery of some of the island’s floral and faunal resources. There have been no depredations of endangered sea turtle nests since the eradication. Post-project monitoring sessions revealed the presence of a growing house mouse (Mus musculus) population on the island. The threats posed by, and potential management strategies for, this introduced pest species are being investigated. This is the first successful rat eradication on a sizable island, using diphacinone bait blocks with a unique, elevated bait-station system. Diphacinone can provide an alternative to the highly toxic brodifacoum and may help reduce non-target hazards in some situations, although several applications are generally required.

scholarly journals Dietary niche differentiation among three species of invasive rodents (Rattus rattus, R. exulans, Mus musculus)

2012 ◽  
Vol 15 (5) ◽  
pp. 1037-1048 ◽  
Author(s):  
Aaron B. Shiels ◽  
Caitlin A. Flores ◽  
Arthur Khamsing ◽  
Paul D. Krushelnycky ◽  
Stephen M. Mosher ◽  
...  
Keyword(s):  
Mus Musculus ◽  
Rattus Rattus ◽  
Niche Differentiation ◽  
Dietary Niche ◽  
Invasive Rodents

Evaluating the susceptibility of invasive black rats (Rattus rattus) and house mice (Mus musculus) to brodifacoum as a prelude to rodent eradication on Lord Howe Island

2018 ◽  
Vol 21 (3) ◽  
pp. 833-845 ◽  
Author(s):  
Robert Wheeler ◽  
David Priddel ◽  
Terence O’Dwyer ◽  
Nicholas Carlile ◽  
Dean Portelli ◽  
...  
Keyword(s):  
Mus Musculus ◽  
Rattus Rattus ◽  
House Mice ◽  
Lord Howe Island ◽  
Rodent Eradication ◽  
Black Rats

Secondary poisoning of stoats (Mustela erminea) at low mouse (Mus musculus) abundance in a New Zealand Nothofagus forest

1998 ◽  
Vol 25 (4) ◽  
pp. 419 ◽  
Author(s):  
K. P. Brown ◽  
N. Alterio ◽  
H. Moller
Keyword(s):  
New Zealand ◽  
Mus Musculus ◽  
Prey Species ◽  
Rattus Rattus ◽  
Relative Importance ◽  
Trichosurus Vulpecula ◽  
Secondary Poisoning ◽  
Mustela Erminea ◽  
Nothofagus Forest ◽  
Tracking Tunnels

Two different brodifacoum (Talon 20 P™) poisoning regimes effectively killed 100% of resident radio-tagged stoats (Mustela erminea) by secondary poisoning in a New Zealand Nothofagus forest when mice (Mus musculus) were scarce. Resident possums (Trichosurus vulpecula) and ship rats (Rattus rattus) were also killed. The relative importance of different prey species as sources of poison for stoats has not been clearly identified but availability of poisoned prey will determine the efficacy of secondary poisoning in years of low prey abundance. Tracking tunnels did not accurately measure the decline in the stoat population and were probably influenced by immigrant stoats that were kill-trapped and contained high levels of poison. This study corroborates the findings of several other similar studies that secondary poisoning using brodifacoum effectively kills stoats.

On the Diet of the Boa Epicrates striatus on Hispaniola, with Notes on E. fordi and E. gracilis

1987 ◽  
Vol 8 (3) ◽  
pp. 251-258 ◽  
Author(s):  
José A. Ottenwalder ◽  
Robert W. Henderson ◽  
Albert Schwartz ◽  
Teresa A. Noeske-Hallin
Keyword(s):  
20Th Century ◽  
Mus Musculus ◽  
Prey Species ◽  
Rattus Rattus ◽  
Stomach Contents ◽  
Early 20Th Century ◽  
Ontogenetic Shift ◽  
Small Rodents ◽  
Prey Remains

AbstractThe stomach contents of 214 specimens of Hispaniolan Epicrates (Serpentes: Boidae) were examined for prey remains. The largest species, E. striatus, exhibits a sharp ontogenetic shift in diet: snakes < 60 cm SVL ate predominantly Anolis lizards; snakes 60-80 cm SVL took anoles and small rodents; and snakes > 80 cm SVL ate birds and rats (Rattus rattus). Epicrates fordi preyed on anoles and small rodents, and E. gracilis took only Anolis. E. striatus ate larger individuals of the same species of Anolis consumed by Hispaniolan colubrids. Before the arrival of Europeans on Hispaniola, large Epicrates striatus most likely preyed upon birds and now-extict rodents (Brotomys, Isolobodon and Plagiodontia) and insectivores (Nesophontes). The diet of E. striatus would have gradually shifted from native to introduced mammals, and by the early 20th century, when most native, non-volant mammals had become extinct on Hispaniola, the shift would have become nearly complete, with the exotics Mus musculus and Rattus rattus becoming the predominant prey species.

Presence of Stenoponia tripectinata (Tiraboschi, 1902) (Siphonaptera, Ctenophtalmidae) in murine (Rodentia) from the Canary Islands

2012 ◽  
Vol 57 (2) ◽  
Author(s):  
Santiago Vicente ◽  
Maria Gómez López
Keyword(s):  
Canary Islands ◽  
North Africa ◽  
Mus Musculus ◽  
Rattus Rattus ◽  
Flea Species ◽  
Gran Canaria ◽  
El Hierro ◽  
La Palma ◽  
The Mediterranean ◽  
La Gomera

AbstractThis article reports the geographical and host distribution of the flea Stenoponia tripectinata on the Canary Islands. S. tripectinata is widely distributed throughout the Mediterranean and North Africa as a parasite of Muridae rodents. To date, Gran Canaria is the only island of the archipelago where S. tripectinata had been found. In this report, S. tripectinata has appeared parasitizing 116 specimens of Mus musculus out of a total of 660, and only 2 Rattus rattus of 215 captured. All the trapped Muridae hosts found to be parasitized by S. tripectinata came from humid biotopes. The results showed that S. tripectinata is present on all the western Canary Islands and on one of the eastern islands, Gran Canaria, the only island already reported. The detection of S. tripectinata on El Hierro, La Palma, La Gomera and Tenerife represents the first records of this flea species on those Canary Islands.

Functional responses of an invasive top predator Mustela erminea to invasive meso-predators Rattus rattus and Mus musculus, in New Zealand forests

2011 ◽  
Vol 38 (2) ◽  
pp. 131 ◽  
Author(s):  
Christopher Jones ◽  
Roger Pech ◽  
Guy Forrester ◽  
Carolyn M. King ◽  
Elaine C. Murphy
Keyword(s):  
New Zealand ◽  
Mus Musculus ◽  
Feeding Activity ◽  
Rattus Rattus ◽  
Passage Time ◽  
Gut Contents ◽  
Functional Responses ◽  
Mammal Species ◽  
Mustela Erminea ◽  
Rodent Prey

Context Management of suites of invasive mammal species can lead to perverse outcomes, such as meso-predator release, or can achieve desirable reductions in the abundance of top-order predators by controlling their prey. Predictive models for predator–prey systems require estimates of predator functional responses, i.e. predation rates as functions of prey density. Aims In New Zealand, estimates of the functional responses of stoats (Mustela erminea) to mice (Mus musculus) and ship (black) rats (Rattus rattus) are required to improve management models for these invasive species. Methods We derived fitted relationships between the presence or absence of mouse or ship-rat remains in stoat guts and corresponding indices of prey abundance in beech and podocarp forests, respectively. To convert field data on stoat-gut contents to minimum kill rates, we used data on feeding activity and estimates of gut-passage time, observed in captive stoats. Key results The most parsimonious fitted curves were Type II functional responses, with a steeper stoat–mouse curve for autumn–winter, indicating a more specialist feeding habit than that in spring–summer. Estimated kill rates of mice per stoat per day reached an asymptote of 1.13 during autumn–winter. Our maximum observed kill rate for spring–summer was 11% less than the extrapolated upper limit of 1.04 mice per stoat per day for New Zealand ecosystems. No asymptote was reached within the limits of the data for the stoat–rat relationship. Conclusions Recent models for trophic interactions between stoats and the primary rodent prey have overestimated kill rates by stoats in forested ecosystems, particularly at very low and very high densities of mice. We show how data on stoat-gut contents can be rescaled to estimate minimum kill rates of rodent prey. Implications The functional-response relationships we have derived can be used to improve modelled predictions of the effects of natural or management-driven perturbations of invasive stoats and their primary rodent-prey populations.

scholarly journals Mamíferos pequeños de humedales de la costa central del Perú

2020 ◽  
Vol 27 (4) ◽  
pp. 483-498
Author(s):  
Víctor Pacheco ◽  
Jaime Pacheco ◽  
Antuane Zevallos ◽  
Pilar Valentin ◽  
José Salvador ◽  
...  
Keyword(s):  
Mus Musculus ◽  
San Antonio ◽  
Rattus Rattus ◽  
Akodon Mollis

Los humedales son ecosistemas frágiles e importantes que, a pesar de su gran biodiversidad, se conoce poco sobre la diversidad de mamíferos. Por ello, en este estudio se documenta la diversidad y abundancia de los mamíferos pequeños de cuatro humedales de la costa central peruana: Albufera de Medio Mundo, Refugio de vida silvestre Pantanos de Villa, Ensenada San Antonio y Caucato. Se realizó una evaluación convencional con trampas y redes, complementada con el método acústico. El esfuerzo de muestreo fue de 4651 trampas/noche, 145 redes/noche y 48 horas/detector. Registramos 5 especies nativas de roedores, 3 roedores introducidos, 12 murciélagos y un marsupial. El roedor Akodon mollis y los murciélagos Nyctinomops laticaudatus y N. macrotis son primeros registros para el departamento de Lima. El cuy silvestre se distribuye en el centro y sur de la costa y confirmamos la presencia del marsupial Didelphis pernigra a nivel del mar. La mayoría de los humedales están fuertemente impactados por la alta abundancia relativa de roedores introducidos, especialmente de Mus musculus y Rattus rattus. La diversidad β fue moderada a pesar de la relativa cercanía entre los humedales. Resaltamos la alta diversidad de mamíferos pequeños nativos en los humedales y alertamos sobre el impacto que los roedores introducidos pueden producir sobre la sobrevivencia de las demás especies. Además, hipotetizamos que la fauna nativa aquí reportada estuvo presente en la región de Lima al menos todo el periodo republicano. Estos humedales requieren protección continua, monitoreo e implementación de medidas de restauración para asegurar la conservación de su biota.

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