Application of Multivariate Analysis for the Selection of Candidates for Biological Control Agents

Sujii, E. R.; Fontes, Eliana G.; Pires, Carmen S. S.; Teixeira, C. A. D.

doi:10.1006/bcon.1996.0096

Cited by 7 publications

(4 citation statements)

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“…Herbivorous arthropod communities are expected to vary with season, not only because species may be affected by weather conditions, but also because they may be linked to certain plant reproductive stages. However, few studies have quantified the difference in species assemblages between seasons for herbivorous insects (Aukema et al 2004;Grimbacher and Stork 2009;Sujii et al 1996) or other taxonomic groups and ecological guilds (Espírito-Santo et al 2009;García-Roger et al 2011), or assessed the subsequent impact on species richness estimates (Moir et al 2011;Selmi and Boulinier 2003). The arthropods sampled on P. aculeata differed significantly between seasons, with similar numbers of observed species and level of survey completeness in each season.…”

Section: Survey Completeness At the Continental Scalementioning

confidence: 99%

Characterising the phytophagous arthropod fauna of a single host plant species: assessing survey completeness at continental and local scales

Bell

Heard

Manion³

et al. 2014

Biodivers Conserv

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Quantifying survey completeness is a key step in designing and interpreting biodiversity assessments. To date this has only been examined either at a local scale through repetitive sampling, or across broader geographic areas through multiple survey sites. In this paper, we determine the completeness of sampling at both local and continental scales, of the phytophagous arthropod assemblage on the Neotropical shrub Parkinsonia aculeata (Leguminosae). We used survey gap analysis (SGA) to determine whether existing surveys adequately sampled the diversity of environments and geographic space covered by the plant. Within defined geographic regions, we determined survey completeness at a local scale with species accumulation curves. SGA identified the highest priority sites for future sampling in the Sonoran Desert and the Pacific Coast of South America. The arthropods sampled on P. aculeata differed significantly between seasons, highlighting the importance of including surveys throughout the year. At the local scale, surveys in most regions were estimated to have sampled \50 % of all species. Only the Communicated by Anurag chaurasia. Electronic supplementary materialThe online version of this article (Mexican Gulf, following 84 samples including 902 individuals, had a reasonably complete sample of all species (more than 50 %). As in other studies, rare species will continue to be detected even after extensive surveying, and it is likely that close to 100 samples or 1,000 individuals will be needed to attain 50 % survey completeness in a region. However, if the objective is to document close ''host-associations'' then effort may be better directed at surveying ecologically distinct new areas rather than exhaustive sampling in existing ones. Methods such as SGA can direct such surveys, and in conjunction with species-richness estimates, can be used to assess the adequacy of existing surveys.

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Section: Survey Completeness At the Continental Scalementioning

confidence: 99%

Characterising the phytophagous arthropod fauna of a single host plant species: assessing survey completeness at continental and local scales

Bell

Heard

Manion³

et al. 2014

Biodivers Conserv

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“…Increasing infestations of the weed, particularly in the Gulf of Carpentaria, led to efforts to find a biological control beginning in the early 1990s. Surveys within the native range through Mexico and Central America (Palmer and Pullen, 2001) and also in Brazil (Sujii et al, 1996) were undertaken. However, the results of these surveys, together with previous information (Cock and Evans, 1984), did not reveal many prospective biological control agents suitable for Australia.…”

Section: Senna Obtusifolia Lmentioning

confidence: 99%

A review of Australian classical biological control of weeds programs and research activities over the past 12 years

Palmer¹,

Heard

Sheppard

2010

Biological Control

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“…Sujii et al (1996) proposed the use of multivariate techniques (indirect gradient analysis) as a tool to facilitate selection of weed biological control agents when conducting field surveys for potential natural enemies of the target weeds. They proposed seeking potential candidate species on the basis of appropriate environmental characteristics (identified using multivariate techniques), which should ensure pre-adaptation to the intended area of introduction.…”

Section: Introductionmentioning

confidence: 99%

“…They proposed seeking potential candidate species on the basis of appropriate environmental characteristics (identified using multivariate techniques), which should ensure pre-adaptation to the intended area of introduction. In their study, Sujii et al (1996) underscored the relevance of this type of community analysis to identify weed biological control agents that could be considered for multiple introductions, based on species co-occurrence, frequency of encounter and feeding guild, which may identify species that are unlikely to compete with each other. The primary objective of this study was to identify those ecological factors that likely play a role in influencing the parasitoid assemblage associated with U. stellata and parasitoid species densities.…”

Section: Introductionmentioning

confidence: 99%

Ecological correlates of the non-indigenous parasitoid assemblage associated with a Hawaiian endemic moth

Kaufman

Wright

2011

Oecologia

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Understanding what ecological factors might predispose indigenous habitats to invasion by invasive species is an important aspect of conservation and invasive species management, particularly when biological control is considered for suppression of the invasive species. This study seeks to identify ecological factors that might play a role in determining the structure of the parasitoid assemblage associated with caterpillars of the endemic Hawaiian moth Udea stellata (Crambidae). Parasitoids were reared from field-collected U. stellata larvae at 18 locations. Fourteen environmental variables were measured at each site. Two multivariate analyses, principal component analysis (PCA) and partial redundancy analysis (RDA), were used to analyze the parasitoid assemblage across a range of habitats varying in environmental characteristics. The PCA analysis showed that the occurrence of some species were highly correlated, and associated with less disturbed sites, whereas other species were associated with sites of medium and high levels of disturbance. The RDA analysis showed that only three of the measured environmental variables (U. stellata density, elevation, and level of habitat disturbance) significantly explained variability in the parasitoid assemblage among sites. There was greater parasitoid species richness associated with U. stellata larvae at higher elevation sites with a lower degree of habitat disturbance by exotic vegetation. The purposely introduced parasitoid species were associated with the non-target moth at sites located at higher elevations with low levels of disturbance. Multivariate analysis has the potential to provide valuable insights into the identification of important environmental factors that mediate parasitoid assemblage structure and level of parasitism on a particular target or non-target species, and therefore facilitate identification of suitable target habitats or susceptible non-target habitats.

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Application of Multivariate Analysis for the Selection of Candidates for Biological Control Agents

Cited by 7 publications

References 0 publications

Characterising the phytophagous arthropod fauna of a single host plant species: assessing survey completeness at continental and local scales

Characterising the phytophagous arthropod fauna of a single host plant species: assessing survey completeness at continental and local scales

A review of Australian classical biological control of weeds programs and research activities over the past 12 years

Ecological correlates of the non-indigenous parasitoid assemblage associated with a Hawaiian endemic moth

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