Influência da temperatura no desenvolvimento de Euborellia annulipes (Lucas) (Dermaptera: Anisolabididae), predador do bicudo-do-algodoeiro

Abstract

Influence of Temperature on the Development of Euborellia annulipes (Lucas)(Dermaptera: Anisolabididae), Predator of Cotton Boll Weevil ABSTRACT -The biology and influence of temperature on the development of nymphal stages of Euborellia annulipes (Lucas) was studied in growth chambers at 15, 20, 23, 25, 28, 30, 33, and 35°C, 60 ± 10% RH, and 14L:10D photoperiod. The viability of eggs ranged from 72.5% (20°C) to 89.3% (28°C).Temperatures of 15° and 35°C were lethal to eggs. The egg incubation period ranged from 6.9 days (33°C) to 18.7 days (20°C). The number of instars of E. annulipes tended to decrease with the increase of temperature. However, in most cases, the nymphal stage presented five instars. Survival of nymphal stage and overall survival (from egg to adult emergence) were higher at 28°C (96.0 and 85.7%), and lower at 30 o C (66.0 and 51.6%). Developmental times from egg to adult emergences of males and females with five instars ranged from 51.5 days (33°C) to 171.3 days (20°C) and from 48.7 days (30°C) to 161.8 days (20°C), respectively. KEY WORDS: Insecta, ring-legged earwig, Anthonomus grandis, biological control, cotton. RESUMO -Estudou-se a biologia e a influência da temperatura no desenvolvimento das formas jovens do predador Euborellia annulipes (Lucas).O estudo foi conduzido a 15, 20, 23, 25, 28, 30, 33, e 35 o C, 60 ± 10% UR e fotofase de 14 horas. A viabilidade de ovos variou de 72,5% (a 20°C) a 89,3% (a 28°C). Entretanto, ocorreu 100% de mortalidade dos ovos a 15° e 35°C. O período de incubação dos ovos variou de 6,9 dias (a 33°C) a 18,7 dias (a 20°C). Na fase ninfal, E. annulipes apresentou cinco ínstares, tendendo a diminuir com o aumento da temperatura. As sobrevivências da fase ninfal e do período total (ovo à emergência de adultos) foram mais altas a 28°C (96,0% e 85,7%) e mais baixas a 30°C (66,0% e 51,6%). O tempo de desenvolvimento de ovo à emergência de adultos, para machos e fêmeas com cinco ínstares, variou de 51,5 dias (a 33°C) a 171,3 dias (a 20°C) e de 48,7 dias (30°C) a 161,8 dias (a 20°C), respectivamente.

Age-Dependent Fecundity and Life-Fertility Tables forEuborellia annulipes(Lucas) (Dermaptera: Anisolabididae) a Cotton Boll Weevil Predator in Laboratory Studies with an Artificial Diet

“…According to this author, eggs do not develop at 10 and 14ЊC; however, a high proportion of eggs hatch at 20ЊC (73.6%) and 32ЊC (85.4%). Lemos et al (1998) reported that this predator had egg survival of 85.5% (at 25ЊC) and 78.1% (at 30ЊC), which are similar to the survival rates obtained in this research. These rates varied greatly as a function of the age of females at both temperatures.…”

“…The ringlegged earwig Euborellia annulipes (Lucas) has been reported as an efÞcient natural enemy of Cosmopolites sordidus German (Curculionidae) and some pest insects of stored grains (Klostermeyer 1942), as well as lepidopterous pests in sugar-cane ecosystems in the United States and Japan (Klostermeyer 1942, Gould 1948, Hensley 1971. Recently, studies conducted by Ramalho and Wanderley (1996), and Lemos et al (1998Lemos et al ( , 1999 reported the possibility of using E. annulipes as a predator of larvae and pupae of the cotton boll weevil in the northeast region of Brazil.…”

“…Studies on the life history and bionomics of North American populations of this species have been conducted by Klostermeyer (1942), Neiswander (1944), Bohart (1947), Bharadwaj (1966), and Rankin et al (1995) and comparative notes with E. cincticollis (Gerstaecker) in California were added by Knabke and Grigarick (1971). In Brazil, during the last few years there has been an increase in the knowledge on this predator, especially its biology and rearing techniques (Lemos 1997), impact of temperature on development , and thermal requirements (Lemos et al 1999). Melamed-Madjar (1971) and Koppenhö fer (1995) also studied the bionomic aspects of populations of E. annulipes in Israel and Kenya, respectively.…”

Exigências térmicas de Doru lineare Eschs. e Doru luteipes Scudder em laboratório

“…Nas demais temperaturas, a viabilidade dos ovos foi superior a 84%, para D. luteipes, e para D. lineare houve um decréscimo nas temperaturas extremas, e a temperatura de 25ºC foi a mais favorável (Tabela 1). Semelhante ao observado neste trabalho, LEMOS et al (1998) também observaram que temperaturas de 15 e 33ºC desfavorecem o desenvolvimento embrionário de Euborellia annulipes (Lucas) (Dermaptera: Anisolabididae), ou seja, há uma tendência de que as temperaturas na faixa de 18 a 28ºC sejam as ideais pa ra o desenvolvimento embrionário de dermápteros (SHEPARD et al, 1973; JONES et al, 1988; JAMET & CAUSSANEL, 1995;LEMOS et al, 1998), o que está de acordo com a faixa de temperatura encontrada para D. luteipes e D. lineare neste trabalho.A temperatura promoveu variações na duração dos ínstares para ambas as espécies, com diferenças significativas para o desenvolvimento ninfal. Entretanto, o número de ínstares foi constante (4), independente da temperatura, para ambas as espécies.…”

Life stage and population density ofPlutella xylostellaaffect the predation behavior ofEuborellia annulipes

“…The colonies of the ringlegged earwigs were established in the Biological Control Unity of the Embrapa Algodão, Campina Grande, Para ıba, Brazil (Lemos et al, 1998) and, posteriorly, reared at LEN/UFPB, and they were supplemented with field-collected individuals every 2-3 years. The colonies of the ringlegged earwigs were established in the Biological Control Unity of the Embrapa Algodão, Campina Grande, Para ıba, Brazil (Lemos et al, 1998) and, posteriorly, reared at LEN/UFPB, and they were supplemented with field-collected individuals every 2-3 years.…”