Responses of Generalist Predators Fed High-Ni Melanotrichus boydi (Heteroptera: Miridae): Elemental Defense Against the Third Trophic Level

Boyd, Robert S.; Wall, Michael A.

doi:10.1674/0003-0031(2001)146[0186:rogpfh]2.0.co;2

Cited by 49 publications

(27 citation statements)

References 36 publications

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“…Other species observed but not analyzed for Ni are also listed Site High Ni concentrations in both grasshoppers and spiders suggest that the presence of hyperaccumulating plants affects the flux of Ni to both herbivore and carnivore trophic levels. This parallels findings recently published by Boyd and Wall (2001) showing that nickel accumulated by a herbivore feeding on hyperaccumulating plants can be passed on to the bodies of carnivores. Their study mostly involved feeding experiments in captivity, in which animals were reared on a single diet with no choices.…”

Section: Discussionsupporting

confidence: 90%

“…Our data extend this finding to a natural situation, in which both herbivores and carnivores were feeding freely on foods with a variety of metal concentrations. In one case, Boyd and Wall (2001) reported the nickel concentration in wild-caught crab spiders (Misumena vatia, Araneae: Thomisidae) from Streptanthus polygaloides on California serpentines. The maximum Ni concentration they reported, 110 µg g -1 , was similar to our mean value for spiders of 103.1 µg g -1 .…”

Section: Discussionmentioning

confidence: 99%

“…If these figures are taken as representative of general concentrations of Ni in herbivore and carnivore trophic levels, their ratio represents a biomagnification index (Laskiowski 1991, Boyd & Wall 2001 of B = 0.998. Values of this index near unity indicate that, once an element enters the food chain, it is transferred but is not further concentrated or "magnified."…”

Section: Discussionmentioning

confidence: 99%

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Spread of metals through an invertebrate food chain as influenced by a plant that hyperaccumulates nickel

et al. 2003

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Summary. Hyperaccumulation of metals in the shoot system of plants is uncommon, yet taxonomically and geographically widespread. It may have a variety of functions, including defense against herbivores. This study investigated the effects of hyperaccumulation on metal concentrations across trophic levels. We collected plant material, soil, and invertebrates from Portuguese serpentine outcrops whose vegetation is dominated by the nickel hyperaccumulator Alyssum pintodasilvae. Samples were analyzed for nickel, chromium, and cobalt. Grasshoppers, spiders, and other invertebrates collected from sites where A. pintodasilvae was common had significantly elevated concentrations of nickel, compared to nearby sites where this hyperaccumulator was not found. Chromium and cobalt, occurring in high concentrations in the serpentine soil but not accumulated by A. pintodasilvae, were not elevated in the invertebrates. Therefore, it appears likely that a flux of nickel to herbivore and carnivore trophic levels is specifically facilitated by the presence of plants that hyperaccumulate this metal. The results may be relevant to the development of phytoremediation and phytomining technologies, which use plants to extract metals from the soil.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Spread of metals through an invertebrate food chain as influenced by a plant that hyperaccumulates nickel

et al. 2003

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“…Similar results were reported by Boyd and Wall [66]. These studies demonstrate that HM can be transferred among invertebrate species, mobilizing metals from one trophic level to another, reaching animals such as small mammals [70][71][72].…”

Section: Heavy Metalssupporting

confidence: 89%

“…For example, the plant Streptanthus polygaloides (Brassicaceae) is a Ni hyperaccumulator species, that is consumed by the herbivore Melanotrichus boydi (Hemiptera) who bioaccumulates Ni in its body as a defense mechanism against the predator species Misumena vatia (Araneae) [66].…”

Section: Heavy Metal Transfer Along Food Chainmentioning

confidence: 99%

Heavy Metal Pollution as a Biodiversity Threat

Tovar-Sánchez¹,

Hernández-Plata²,

Santoyo-Martínez³

et al. 2018

Heavy Metals

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Heavy metals exert their toxic effects through different mechanisms. Lately, increasing attention has been focused on understanding the long-term ecological effects of chronically exposed populations and communities and their consequences to the ecosystem. The long-term exposure to heavy metals in the environment represents a threat to wild populations, affecting communities and putting ecosystem integrity at risk. Therefore, this type of exposure represents a threat to biodiversity. In the field, metal exposure is generally characterized by low doses and chronic exposures. This type of exposure exerts alterations across levels of biological organization. Distribution and abundance of populations, the community structure and the ecosystem dynamics may be altered. This chapter will focus on how chronically metal exposures in the field affect negatively populations and communities becoming a threat to biodiversity. Also, attention is put on the tools that enable to characterize and analyze the detrimental effects of heavy metal exposure on wild populations. Hence, the use and development of biomarkers in ecotoxicology will be discussed.

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Transfer of heavy metals through terrestrial food webs: a review

Gall

Boyd

Rajakaruna

2015

Environ Monit Assess

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703

258

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Heavy metals are released into the environment by both anthropogenic and natural sources. Highly reactive and often toxic at low concentrations, they may enter soils and groundwater, bioaccumulate in food webs, and adversely affect biota. Heavy metals also may remain in the environment for years, posing long-term risks to life well after point sources of heavy metal pollution have been removed. In this review, we compile studies of the community-level effects of heavy metal pollution, including heavy metal transfer from soils to plants, microbes, invertebrates, and to both small and large mammals (including humans). Many factors contribute to heavy metal accumulation in animals including behavior, physiology, and diet. Biotic effects of heavy metals are often quite different for essential and non-essential heavy metals, and vary depending on the specific metal involved. They also differ for adapted organisms, including metallophyte plants and heavy metal-tolerant insects, which occur in naturally high-metal habitats (such as serpentine soils) and have adaptations that allow them to tolerate exposure to relatively high concentrations of some heavy metals. Some metallophyte plants are hyperaccumulators of certain heavy metals and new technologies using them to clean metal-contaminated soil (phytoextraction) may offer economically attractive solutions to some metal pollution challenges. These new technologies provide incentive to catalog and protect the unique biodiversity of habitats that have naturally high levels of heavy metals.

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Responses of Generalist Predators Fed High-Ni Melanotrichus boydi (Heteroptera: Miridae): Elemental Defense Against the Third Trophic Level

Cited by 49 publications

References 36 publications

Spread of metals through an invertebrate food chain as influenced by a plant that hyperaccumulates nickel

Spread of metals through an invertebrate food chain as influenced by a plant that hyperaccumulates nickel

Heavy Metal Pollution as a Biodiversity Threat

Transfer of heavy metals through terrestrial food webs: a review

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