Economic Outcome of Classical Biological Control: A Case Study on the Eucalyptus Snout Beetle, Gonipterus platensis, and the Parasitoid Anaphes nitens

Carlos Valente, Catarina I. Gonçalves, Fernanda Monteiro, João Gaspar, Margarida Silva, Miguel Sottomayor, Maria Rosa Paiva, Manuela Branco

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Despite the importance of invasive pests, few studies address the costs and benefits of the strategies used to control them. The present work assesses the economic impact of the Eucalyptus snout beetle, Gonipterus platensis, and the benefits resulting from its biological control with Anaphes nitens in Portugal, over a 20-year period. Comparisons were made between the real situation (with A. nitens) and three scenarios without biological control: 1) replacement of Eucalyptus globulus by resistant eucalypts; 2) insecticide use; and 3) offset of yield losses by imported wood. A cost-benefit analysis was performed to evaluate a programme that aimed to accelerate A. nitens establishment. Although A. nitens provides adequate pest control in several regions, 46% of the area planted with eucalypts is affected by the beetle, causing wood losses of 648 M euros over 20 years. Losses in the three hypothetical scenarios were estimated at 2451 M-7164 M euros, resulting in benefits from biological control of 1803 M–6516 M euros, despite the fact that only partial success was achieved. Anticipating biological control by just one, two, or three years resulted in benefit-cost ratios of 67, 190, and 347, respectively. Because nonmarket values were not accounted for, these figures are likely underestimated.

Original languageEnglish
Pages (from-to)40-47
Number of pages8
JournalEcological Economics
Volume149
DOIs
Publication statusPublished - 1 Jul 2018

Fingerprint

parasitoid
biological control
beetle
economics
cost-benefit analysis
pest control
economic impact
insecticide
replacement
Biological control
Economics
cost
loss
Scenarios
Wood
Pest

Keywords

  • Biological Invasions
  • Cost-Benefit Analysis
  • Defoliation
  • Eucalyptus Weevil
  • Natural Enemy
  • Pest Management

Cite this

Valente, Carlos ; Gonçalves, Catarina I. ; Monteiro, Fernanda ; Gaspar, João ; Silva, Margarida ; Sottomayor, Miguel ; Paiva, Maria Rosa ; Branco, Manuela. / Economic Outcome of Classical Biological Control: A Case Study on the Eucalyptus Snout Beetle, Gonipterus platensis, and the Parasitoid Anaphes nitens. In: Ecological Economics. 2018 ; Vol. 149. pp. 40-47.
@article{4ee2f8d334ed402880a9b52d7842e8a9,
title = "Economic Outcome of Classical Biological Control: A Case Study on the Eucalyptus Snout Beetle, Gonipterus platensis, and the Parasitoid Anaphes nitens",
abstract = "Despite the importance of invasive pests, few studies address the costs and benefits of the strategies used to control them. The present work assesses the economic impact of the Eucalyptus snout beetle, Gonipterus platensis, and the benefits resulting from its biological control with Anaphes nitens in Portugal, over a 20-year period. Comparisons were made between the real situation (with A. nitens) and three scenarios without biological control: 1) replacement of Eucalyptus globulus by resistant eucalypts; 2) insecticide use; and 3) offset of yield losses by imported wood. A cost-benefit analysis was performed to evaluate a programme that aimed to accelerate A. nitens establishment. Although A. nitens provides adequate pest control in several regions, 46{\%} of the area planted with eucalypts is affected by the beetle, causing wood losses of 648 M euros over 20 years. Losses in the three hypothetical scenarios were estimated at 2451 M-7164 M euros, resulting in benefits from biological control of 1803 M–6516 M euros, despite the fact that only partial success was achieved. Anticipating biological control by just one, two, or three years resulted in benefit-cost ratios of 67, 190, and 347, respectively. Because nonmarket values were not accounted for, these figures are likely underestimated.",
keywords = "Biological Invasions, Cost-Benefit Analysis, Defoliation, Eucalyptus Weevil, Natural Enemy, Pest Management",
author = "Carlos Valente and Gon{\cc}alves, {Catarina I.} and Fernanda Monteiro and Jo{\~a}o Gaspar and Margarida Silva and Miguel Sottomayor and Paiva, {Maria Rosa} and Manuela Branco",
note = "Sem PDF conforme despacho.",
year = "2018",
month = "7",
day = "1",
doi = "10.1016/j.ecolecon.2018.03.001",
language = "English",
volume = "149",
pages = "40--47",
journal = "Ecological Economics",
issn = "0921-8009",
publisher = "Elsevier Science B.V., Amsterdam.",

}

Economic Outcome of Classical Biological Control: A Case Study on the Eucalyptus Snout Beetle, Gonipterus platensis, and the Parasitoid Anaphes nitens. / Valente, Carlos; Gonçalves, Catarina I.; Monteiro, Fernanda; Gaspar, João; Silva, Margarida; Sottomayor, Miguel; Paiva, Maria Rosa; Branco, Manuela.

In: Ecological Economics, Vol. 149, 01.07.2018, p. 40-47.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Economic Outcome of Classical Biological Control: A Case Study on the Eucalyptus Snout Beetle, Gonipterus platensis, and the Parasitoid Anaphes nitens

AU - Valente, Carlos

AU - Gonçalves, Catarina I.

AU - Monteiro, Fernanda

AU - Gaspar, João

AU - Silva, Margarida

AU - Sottomayor, Miguel

AU - Paiva, Maria Rosa

AU - Branco, Manuela

N1 - Sem PDF conforme despacho.

PY - 2018/7/1

Y1 - 2018/7/1

N2 - Despite the importance of invasive pests, few studies address the costs and benefits of the strategies used to control them. The present work assesses the economic impact of the Eucalyptus snout beetle, Gonipterus platensis, and the benefits resulting from its biological control with Anaphes nitens in Portugal, over a 20-year period. Comparisons were made between the real situation (with A. nitens) and three scenarios without biological control: 1) replacement of Eucalyptus globulus by resistant eucalypts; 2) insecticide use; and 3) offset of yield losses by imported wood. A cost-benefit analysis was performed to evaluate a programme that aimed to accelerate A. nitens establishment. Although A. nitens provides adequate pest control in several regions, 46% of the area planted with eucalypts is affected by the beetle, causing wood losses of 648 M euros over 20 years. Losses in the three hypothetical scenarios were estimated at 2451 M-7164 M euros, resulting in benefits from biological control of 1803 M–6516 M euros, despite the fact that only partial success was achieved. Anticipating biological control by just one, two, or three years resulted in benefit-cost ratios of 67, 190, and 347, respectively. Because nonmarket values were not accounted for, these figures are likely underestimated.

AB - Despite the importance of invasive pests, few studies address the costs and benefits of the strategies used to control them. The present work assesses the economic impact of the Eucalyptus snout beetle, Gonipterus platensis, and the benefits resulting from its biological control with Anaphes nitens in Portugal, over a 20-year period. Comparisons were made between the real situation (with A. nitens) and three scenarios without biological control: 1) replacement of Eucalyptus globulus by resistant eucalypts; 2) insecticide use; and 3) offset of yield losses by imported wood. A cost-benefit analysis was performed to evaluate a programme that aimed to accelerate A. nitens establishment. Although A. nitens provides adequate pest control in several regions, 46% of the area planted with eucalypts is affected by the beetle, causing wood losses of 648 M euros over 20 years. Losses in the three hypothetical scenarios were estimated at 2451 M-7164 M euros, resulting in benefits from biological control of 1803 M–6516 M euros, despite the fact that only partial success was achieved. Anticipating biological control by just one, two, or three years resulted in benefit-cost ratios of 67, 190, and 347, respectively. Because nonmarket values were not accounted for, these figures are likely underestimated.

KW - Biological Invasions

KW - Cost-Benefit Analysis

KW - Defoliation

KW - Eucalyptus Weevil

KW - Natural Enemy

KW - Pest Management

UR - http://www.scopus.com/inward/record.url?scp=85043451850&partnerID=8YFLogxK

U2 - 10.1016/j.ecolecon.2018.03.001

DO - 10.1016/j.ecolecon.2018.03.001

M3 - Article

VL - 149

SP - 40

EP - 47

JO - Ecological Economics

JF - Ecological Economics

SN - 0921-8009

ER -