Spatiotemporal variation in Akodon montensis (Cricetidae

Sigmodontinae) and hantaviral seroprevalence in a subtropical forest ecosystem

Robert D. Owen, Douglas G. Goodin, David E. Koch, Yong Kyu Chu, Colleen Jonsson

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Relatively little information is available concerning the natural history or population ecology of the montane akodont, Akodon montensis, a sigmodontine species that harbors Jabor and Ape Aime hantaviruses. On the basis of mark-recapture sampling of 3 locales during 2 years, this report provides comparative data on populational and other characteristics of the species near its distributional limit, in the Upper Paran Atlantic Forest in Paraguay. We found A. montensis to be almost exclusively terrestrial (nonarboreal) and to vary in population density among locales and between years, findings consistent with earlier studies. Population density was not related either to neotropical seasonality or to most precipitation variables, but sex ratio varied seasonally, which has not been reported previously. We evaluated the seroprevalence of hantavirus in A. montensis, in association with external, populational, and individual variables. As in most previous studies of rodenthantavirus systems, seroprevalence varied among sampling locales and was higher among males. However, unlike previous reports, especially those from North America, we did not find a correspondence between seroprevalence and population density, seasonal variation, or most precipitation variables. Simple and direct associations between seroprevalence levels and either seasonality or precipitation may be less characteristic of humid neotropical or subtropical systems. Our analyses revealed that seropositive animals exhibit several noteworthy behavioral and life-history modifications, in particular that they have larger home ranges than do seronegatives; exhibit greater maximum distance moved; have greater home range displacement between sampling sessions, particularly those individuals that are seroconverting during the same period; and have greater longevity, especially among males. In general, these characteristics could be postulated as favorable to the capacity of the virus to be transmitted horizontally to other hosts.

Original languageEnglish (US)
Pages (from-to)476-481
Number of pages6
JournalJournal of Mammalogy
Volume91
Issue number2
DOIs
StatePublished - Apr 16 2010

Fingerprint

Sigmodontinae
Arvicolinae
Seroepidemiologic Studies
seroprevalence
forest ecosystems
forest ecosystem
Ecosystem
population density
Population Density
Homing Behavior
Hantavirus
home range
seasonality
sampling
population ecology
general characteristics
Paraguay
sex ratio
Sex Ratio
Hominidae

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Animal Science and Zoology
  • Genetics
  • Nature and Landscape Conservation

Cite this

Spatiotemporal variation in Akodon montensis (Cricetidae : Sigmodontinae) and hantaviral seroprevalence in a subtropical forest ecosystem. / Owen, Robert D.; Goodin, Douglas G.; Koch, David E.; Chu, Yong Kyu; Jonsson, Colleen.

In: Journal of Mammalogy, Vol. 91, No. 2, 16.04.2010, p. 476-481.

Research output: Contribution to journalArticle

@article{079f2bb083fd4390bb3ea2bd91996b75,
title = "Spatiotemporal variation in Akodon montensis (Cricetidae: Sigmodontinae) and hantaviral seroprevalence in a subtropical forest ecosystem",
abstract = "Relatively little information is available concerning the natural history or population ecology of the montane akodont, Akodon montensis, a sigmodontine species that harbors Jabor and Ape Aime hantaviruses. On the basis of mark-recapture sampling of 3 locales during 2 years, this report provides comparative data on populational and other characteristics of the species near its distributional limit, in the Upper Paran Atlantic Forest in Paraguay. We found A. montensis to be almost exclusively terrestrial (nonarboreal) and to vary in population density among locales and between years, findings consistent with earlier studies. Population density was not related either to neotropical seasonality or to most precipitation variables, but sex ratio varied seasonally, which has not been reported previously. We evaluated the seroprevalence of hantavirus in A. montensis, in association with external, populational, and individual variables. As in most previous studies of rodenthantavirus systems, seroprevalence varied among sampling locales and was higher among males. However, unlike previous reports, especially those from North America, we did not find a correspondence between seroprevalence and population density, seasonal variation, or most precipitation variables. Simple and direct associations between seroprevalence levels and either seasonality or precipitation may be less characteristic of humid neotropical or subtropical systems. Our analyses revealed that seropositive animals exhibit several noteworthy behavioral and life-history modifications, in particular that they have larger home ranges than do seronegatives; exhibit greater maximum distance moved; have greater home range displacement between sampling sessions, particularly those individuals that are seroconverting during the same period; and have greater longevity, especially among males. In general, these characteristics could be postulated as favorable to the capacity of the virus to be transmitted horizontally to other hosts.",
author = "Owen, {Robert D.} and Goodin, {Douglas G.} and Koch, {David E.} and Chu, {Yong Kyu} and Colleen Jonsson",
year = "2010",
month = "4",
day = "16",
doi = "10.1644/09-MAMM-A-152.1",
language = "English (US)",
volume = "91",
pages = "476--481",
journal = "Journal of Mammalogy",
issn = "0022-2372",
publisher = "Allen Press Inc.",
number = "2",

}

TY - JOUR

T1 - Spatiotemporal variation in Akodon montensis (Cricetidae

T2 - Sigmodontinae) and hantaviral seroprevalence in a subtropical forest ecosystem

AU - Owen, Robert D.

AU - Goodin, Douglas G.

AU - Koch, David E.

AU - Chu, Yong Kyu

AU - Jonsson, Colleen

PY - 2010/4/16

Y1 - 2010/4/16

N2 - Relatively little information is available concerning the natural history or population ecology of the montane akodont, Akodon montensis, a sigmodontine species that harbors Jabor and Ape Aime hantaviruses. On the basis of mark-recapture sampling of 3 locales during 2 years, this report provides comparative data on populational and other characteristics of the species near its distributional limit, in the Upper Paran Atlantic Forest in Paraguay. We found A. montensis to be almost exclusively terrestrial (nonarboreal) and to vary in population density among locales and between years, findings consistent with earlier studies. Population density was not related either to neotropical seasonality or to most precipitation variables, but sex ratio varied seasonally, which has not been reported previously. We evaluated the seroprevalence of hantavirus in A. montensis, in association with external, populational, and individual variables. As in most previous studies of rodenthantavirus systems, seroprevalence varied among sampling locales and was higher among males. However, unlike previous reports, especially those from North America, we did not find a correspondence between seroprevalence and population density, seasonal variation, or most precipitation variables. Simple and direct associations between seroprevalence levels and either seasonality or precipitation may be less characteristic of humid neotropical or subtropical systems. Our analyses revealed that seropositive animals exhibit several noteworthy behavioral and life-history modifications, in particular that they have larger home ranges than do seronegatives; exhibit greater maximum distance moved; have greater home range displacement between sampling sessions, particularly those individuals that are seroconverting during the same period; and have greater longevity, especially among males. In general, these characteristics could be postulated as favorable to the capacity of the virus to be transmitted horizontally to other hosts.

AB - Relatively little information is available concerning the natural history or population ecology of the montane akodont, Akodon montensis, a sigmodontine species that harbors Jabor and Ape Aime hantaviruses. On the basis of mark-recapture sampling of 3 locales during 2 years, this report provides comparative data on populational and other characteristics of the species near its distributional limit, in the Upper Paran Atlantic Forest in Paraguay. We found A. montensis to be almost exclusively terrestrial (nonarboreal) and to vary in population density among locales and between years, findings consistent with earlier studies. Population density was not related either to neotropical seasonality or to most precipitation variables, but sex ratio varied seasonally, which has not been reported previously. We evaluated the seroprevalence of hantavirus in A. montensis, in association with external, populational, and individual variables. As in most previous studies of rodenthantavirus systems, seroprevalence varied among sampling locales and was higher among males. However, unlike previous reports, especially those from North America, we did not find a correspondence between seroprevalence and population density, seasonal variation, or most precipitation variables. Simple and direct associations between seroprevalence levels and either seasonality or precipitation may be less characteristic of humid neotropical or subtropical systems. Our analyses revealed that seropositive animals exhibit several noteworthy behavioral and life-history modifications, in particular that they have larger home ranges than do seronegatives; exhibit greater maximum distance moved; have greater home range displacement between sampling sessions, particularly those individuals that are seroconverting during the same period; and have greater longevity, especially among males. In general, these characteristics could be postulated as favorable to the capacity of the virus to be transmitted horizontally to other hosts.

UR - http://www.scopus.com/inward/record.url?scp=77951266109&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77951266109&partnerID=8YFLogxK

U2 - 10.1644/09-MAMM-A-152.1

DO - 10.1644/09-MAMM-A-152.1

M3 - Article

VL - 91

SP - 476

EP - 481

JO - Journal of Mammalogy

JF - Journal of Mammalogy

SN - 0022-2372

IS - 2

ER -