Life tables of Toxorhynchites rutilus (Diptera : Culicidae) in nature in Southern Florida

  • Campos R
  • Lounibos L
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Abstract

Stage-specific survivorship curves were constructed for the immature
stages of a native. predatory mosquito, Toxorhynchites rutilus (Coquillet),
by regular censuses in the summer and fall of water-holding treeholes
and tires. Survival from egg to adult ranged from 1.8 to 5.6{%}, and
survivorship patterns were significantly heterogeneous between seasons
and container types. The probability of death was highest in the
first and fourth larval instars. Rainfall and drought were relatively
unimportant risk factors during this study, but the probabilities
of disappearance of eggs and first and fourth instars were significantly
higher in the presence of large conspecifics, suggesting that cannibalism
is a major source of mortality

Author-supplied keywords

  • 2000
  • 3
  • 37
  • 385ð392
  • AEDES-AEGYPTI
  • BEHAVIOR
  • BIOLOGICAL-CONTROL
  • BODY-SIZE
  • BREVIPALPIS
  • CENSUSES
  • Diptera
  • EGGS
  • IMMATURE STAGES
  • INSTARS
  • LARVAL
  • LARVAL INSTARS
  • LIFE-TABLE
  • MORTALITY
  • MOSQUITOS
  • PATTERNS
  • PHYTOTELMATA
  • RAINFALL
  • RICE FIELDS
  • RISK
  • Toxorhynchites rutilus
  • cannibalism
  • con-
  • cosmopolitan mosquito genus
  • egg
  • entomol
  • instar
  • j
  • life table
  • life tables
  • life-tables
  • med
  • mortality
  • natural or artiþcial water
  • survival
  • survivorship
  • t oxorhynchites is a
  • toxorhynchites rutilus
  • whose larvae occur in

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Authors

  • R E Campos

  • L P Lounibos

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