▁ ▁Ac oust ic ▁calling ▁may ▁be ▁affected ▁by ▁an ▁organ ism ' s ▁physical ▁characteristics ▁which ▁can ▁be ▁affected ▁in ▁turn ▁by ▁the ▁environmental ▁condition . ▁In ▁areas ▁of ▁food ▁and ▁water ▁abund ance ▁the ▁organ isms ▁may ▁be ▁health ier ▁and ▁better ▁able ▁to ▁allocate ▁more ▁resources ▁toward ▁producing ▁the ▁ac oust ic ▁calls . ▁Another ▁experiment ▁exam ining ▁vocal ization ▁studied ▁tree ▁fro gs . ▁The ▁research ers ▁recorded ▁the ▁calls ▁of ▁the ▁male ▁fro gs ▁in ▁two ▁different ▁conditions . ▁In ▁one ▁condition ▁females ▁were ▁present ▁and ▁in ▁the ▁other ▁they ▁were ▁absent . ▁Both ▁weight ▁and ▁condition ▁affected ▁the ▁male ▁f rog ' s ▁ability ▁to ▁call . ▁The ▁smaller ▁males ▁and ▁the ▁males ▁that ▁were ▁in ▁the ▁best ▁condition ▁showed ▁higher ▁pl astic ity . ▁ ▁Effect ▁of ▁phen ot ype ▁and ▁m ating ▁tact ics ▁ ▁In ▁many ▁species ▁there ▁are ▁different ▁m ating ▁tact ics ▁and ▁they ▁are ▁displayed ▁through ▁multiple ▁re product ive ▁behavior al ▁phen ot ypes ▁and ▁the ▁different ▁phen ot ypes ▁have ▁different ▁advantages . ▁These ▁phen ot ypes , ▁which ▁have ▁different ▁sexual ▁signal ing ▁tact ics , ▁are ▁selected ▁with ▁consideration ▁to ▁the ▁organ ism ' s ▁environmental ▁conditions . ▁If ▁a ▁species ▁ener get ic ▁res erves ▁need ▁to ▁be ▁conser ved ▁for ▁a ▁function ▁other ▁than ▁signal ing ▁than ▁the ▁ener get ically ▁low - cost ▁phen ot ypes ▁may ▁be ▁selected ▁for , ▁while ▁in ▁times ▁of ▁high ▁energy ▁a ▁less ▁ener get ically ▁conserv ative