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Guide BA, Andaló V, Ferreira DG, Alves VS, Fernandes TAP, Neves PMOJ. First report and biological characteristics of Heterorhabditis amazonensis in the state of Paraná, Brazil. BRAZ J BIOL 2024; 84:e262374. [DOI: 10.1590/1519-6984.262374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/15/2022] [Indexed: 11/22/2022] Open
Abstract
Abstract Entomopathogenic nematodes (EPNs) from Heterorhabditidae and Steinernematidae families are extensively used to control insect pests. In Brazil, however, relatively few studies have identified and characterized these entomopathogens. The objective of this study was to identify and characterize an EPN isolate obtained from soil samples collected in the state of Paraná, Brazil. An isolate (UEL 08) of Heterorhabditis was detected in a soil sample collected from a pasture area cultivated with Brachiaria grass in Londrina, state of Paraná, Brazil (23°34ʹ311ʹʹS, 050°58ʹ298ʹʹW), using the insect-baiting technique with Galleria mellonella larvae as hosts. The nematode was identified through morphometric studies and molecular analyses based on amplification of the rDNA ITS region. Although we identified certain morphometric differences compared with the original description, the molecular data indicated that the ITS sequence obtained for the UEL 08 isolate is identical to the reference sequence of H. amazonensis (DQ665222) and presented 100% similarity. Thus, the findings of our morphological and molecular studies confirmed that the isolated nematode is H. amazonensis, which is the first time this species has been registered in Paraná. Study of the biological characteristics of H. amazonensis (UEL 08) revealed that the isolate has two distinct life cycles – one short (216 h) and the other long (288 h) – and produces two generations in both cycles. We observed that H. amazonensis (UEL 8) was pathogenic and virulent to the three evaluated hosts, although with different virulence against these hosts. The larvae of G. mellonella and Alphitobius diaperinus were more susceptible than adult Dichelops (Diacereus) melacanthus, with 100%, 85%, and 46% mortality, respectively. Furthermore, an in vivo production assay revealed a mean daily yield of 3.4 × 103 infective juveniles/g host larvae.
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Affiliation(s)
| | - V. Andaló
- Universidade Federal de Uberlândia, Brasil
| | | | - V. S. Alves
- Universidade Estadual do Norte do Paraná, Brasil
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Androcioli HG, Hoshino AT, Pastório MA, Cardoso PC, de Araújo PM, Fernandes TAP, Menezes AO. First Record of Euphoria lurida Fabricius (Coleoptera: Scarabaeidae) Injurious to Safflower (Carthamus tinctorius L.) (Asterales: Asteraceae) in Brazil. Neotrop Entomol 2017; 46:130-132. [PMID: 27553719 DOI: 10.1007/s13744-016-0434-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 07/29/2016] [Indexed: 06/06/2023]
Abstract
We present the first report on Euphoria lurida (Fabricius) (Coleoptera: Scarabaeidae) infestation on safflower (Carthamus tinctorius L.), a crop of industrial and medicinal importance. Between September and October 2013-2015 in Paraná State, we observed E. lurida adults feeding on safflower plants from the inception of flower head formation onwards, over an area of approximately 400 m2. Losses in the productivity of infested plants were estimated between 15 and 50%. The damage was characterized by perforations in the upper portion and at the base of the developing flower heads or open flowers, resulting in withering and abortion of the reproductive structures.
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Affiliation(s)
- H G Androcioli
- Agronomic Institute of Paraná, Rodovia Celso Garcia Cid, PR 445, Km 375, ZIP 86047-902, Londrina, PR, Brasil.
| | - A T Hoshino
- State Univ of Londrina, Rodovia Celso Garcia Cid, PR 445, Km 380, University Campus, ZIP 86.057-970, Londrina, PR, Brasil
| | - M A Pastório
- State Univ of Londrina, Rodovia Celso Garcia Cid, PR 445, Km 380, University Campus, ZIP 86.057-970, Londrina, PR, Brasil
| | - P C Cardoso
- Agronomic Institute of Paraná, Rodovia Celso Garcia Cid, PR 445, Km 375, ZIP 86047-902, Londrina, PR, Brasil
| | - P M de Araújo
- Agronomic Institute of Paraná, Rodovia Celso Garcia Cid, PR 445, Km 375, ZIP 86047-902, Londrina, PR, Brasil
| | - T A P Fernandes
- State Univ of Londrina, Rodovia Celso Garcia Cid, PR 445, Km 380, University Campus, ZIP 86.057-970, Londrina, PR, Brasil
| | - A O Menezes
- State Univ of Londrina, Rodovia Celso Garcia Cid, PR 445, Km 380, University Campus, ZIP 86.057-970, Londrina, PR, Brasil
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Sato JO, Fernandes TAP, Nascimento CB, Brito RG, Saad-Magalhães C. Inactive disease and remission rates after intraarticular steroids as initial therapy for juvenile idiopathic arhtritis (JIA). Pediatr Rheumatol Online J 2011. [PMCID: PMC3194566 DOI: 10.1186/1546-0096-9-s1-p207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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