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Demographic fitness of Belminus ferroae (Hemiptera: Triatominae) on three different hosts under laboratory conditions

Overview of attention for article published in Memórias do Instituto Oswaldo Cruz, November 2013
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Title
Demographic fitness of Belminus ferroae (Hemiptera: Triatominae) on three different hosts under laboratory conditions
Published in
Memórias do Instituto Oswaldo Cruz, November 2013
DOI 10.1590/0074-0276130211
Pubmed ID
Authors

Claudia Magaly Sandoval, Paula Medone, Elsa Evelia Nieves, Diego Alexander Jaimes, Nelcy Ortiz, Jorge Eduardo Rabinovich

Abstract

Triatominae are widely recognised for their role as vectors of Trypanosoma cruzi. One of the main biological characteristics of this subfamily is their obligate haematophagous condition. However, previous studies on Belminus herreri and Belminus ferroae suggested that cockroaches are their principal hosts in domiciles. Due to this peculiar behaviour, the aim of this study was to analyse several demographic and reproductive parameters of B. ferroae fed on three different hosts (mice, cockroaches and Rhodnius prolixus) and relate B. ferroae fitness to these alternative hosts. The cohorts were reared under constant conditions. The egg hatching rate was similar for cohorts fed on cockroaches (69.4%) and R. prolixus (63.8%), but was much lower for the cohort fed on mice (16%). The development time from the nymph to adult stage and the average age of first reproduction (α) presented lower values in the cohort fed on cockroaches, which is consistent with the higher population growth rate associated with this host. Demographic parameters [intrinsic rate of natural increase, finite rate of population growth, net reproductive rate and damping ratio] showed statistically significant differences between the cohorts. Analysis of the life history of B. ferroae revealed a higher fitness related to the cockroach. The implications of these results for the origin of the subfamily are discussed.

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Geographical breakdown

Country Count As %
United States 1 3%
Unknown 29 97%

Demographic breakdown

Readers by professional status Count As %
Researcher 7 23%
Student > Master 5 17%
Student > Bachelor 4 13%
Professor 4 13%
Student > Doctoral Student 3 10%
Other 4 13%
Unknown 3 10%
Readers by discipline Count As %
Agricultural and Biological Sciences 13 43%
Medicine and Dentistry 6 20%
Environmental Science 2 7%
Nursing and Health Professions 2 7%
Biochemistry, Genetics and Molecular Biology 1 3%
Other 2 7%
Unknown 4 13%