INFLUENCE OF TEMPERATURE ON THE DEVELOPMENT OF <i>GONIPTERUS SCUTELLATUS</i> GYLLENHAL, 1833 (COLEOPTERA, CURCULIONIDAE) IN <i>EUCALYPTUS VIMINALIS</i> LABILL IN CURITIBA, STATE OF PARANÁ

Sanches, M.A.

doi:10.1590/1808-1657v65n2p0431998

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Artigo • Arq. Inst. Biol. 65 (2) • Jul-Dec 1998 • https://doi.org/10.1590/1808-1657v65n2p0431998 linkcopy

INFLUENCE OF TEMPERATURE ON THE DEVELOPMENT OF GONIPTERUS SCUTELLATUS GYLLENHAL, 1833 (COLEOPTERA, CURCULIONIDAE) IN EUCALYPTUS VIMINALIS LABILL IN CURITIBA, STATE OF PARANÁ

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ABSTRACT

A study of development of Gonipterus scutellatus Gyllenhal, 1833 was undertaken in laboratory, using Eucalyptus viminalis as host, at four different temperatures (18, 20, 22 and 24 ºC), R.H. 70±10% with 12 h of photophase. The influence of temperature was demonstrated and the lower thresholds were 9.16 ºC for eggs, 8.08 ºC for larvae and 8.60 ºC for prepupae and pupae. Similarly, the thermic constants were, respectively, 109.32; 271.36 and 518.04 ºD. The temperature requirements suggest the existence of two generations per year, a number which agrees with field observation.

KEY WORDS:
Curculionidae; development; temperature; Gonipterus scutellatus

ESTÁGIO	MESES
Ovo Larva	Abr.	Mai.	Jun.	Jul.	Ago. X	Set. X X	Out. X X	Nov. X X	Dez. X X	Jan. X X	Fev. X X	Mar.	Abr.
Prépupa							X	X	X	X
Adulto	X	X	X	X	X	X	X	X	X	X	X	X	X

ESTÁGIO	TEMPERATURA
18	20	22	24
Ovo 12,83±0,12ª	10,84±0,J3b	8,67±0,92c	7,62±0,J3d
Larva 27,35±0,24ª	22,86±0, 18b	l 9,34±0,17c	17,10±0,12d
Prépupa+pupa 54,34+0,82ª	47,lQ+0,86b	37,51+0,84c	33,94+0,58d
Total 85,95±1,61'	80,86±1,88ª	66,84±1,40b	61,50±I,64h

ÍNSTARES		TEMPERATURA
	18	20	22	24
I	7,75±0,10ª	6,55±0,10b	5,34±0,06'	4,82±0,08d
II	6,00±0,07ª	4,82±0,08b	3,99±0,07"	3,51±0,08<l
III	7,02±0,08ª	5,67±0,07h	4,96±0,08c	4,18±0,06<l
IV	6,58±0,24ª	5,64±0,J0h	5,20±0,15b	4,53±0,08'

FASES		TEMPERATURA
	18	20	22	24
1° ínstar	11,97	13,93	12,30	12,12
2° ínstar	3,88	3,81	0,93	1,72
3° ínstar	4,04	1,98	2,83	1,75
4° ínstar	6,32	5,05	6,80	4,46
prép.pupa	50,56	57,45	62,50	68,22

ESTÁGIOS		TEMPERATURA
	18	20	22	24
Prépupa Pupa	35,74±1,47ª	25,l 7±0,82" 24,44±0,31 ª	21,95±0,60" 20,04±0,26"	18,76±0,5ld 17,73±0,52'

ESTÁGIOS		TEMPERATURA
	18	20	22	24
Ovo	0,0770	0,0950	0,1133	O,1316
Larva	0,0370	0,0440	0,0513	0,0587
Prépupa+pupa	0,0180	0,0220	0,0260	0,0300

ESTÁGIO	EQUAÇÃO	Tb	r2
Ovo	1/D= - 0,0878998 + 0,009147x	9,61	99,19
Larva	1/D= - 0,0297656 + 0,003685x	8,08	99,89
Prépupa+ pupa	11D= - 0,016598 + 0,00l 930x	8,60	98,18

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