Silent assassins: predation of native New Zealand trichopteran eggs by non-native freshwater gastropods

Smith, Brian J.; Reid, David

doi:10.1080/01650424.2016.1274767

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…We also found the invasive freshwater snails Physa acuta and Pseudosuccinea columella at four of the five sites we surveyed. These snails are prolific breeders, are widespread in New Zealand, and could potentially alter invertebrate community composition by displacing native species and/or predating on eggs [60]. However, the negative impacts on native aquatic fauna are likely more negatively impacted by the presence of the three non-native, invasive fish species: goldfish (Carassius auratus), brown bullhead (Ameiurus nebulosus), and mosquitofish (Gambusia affinis).…”

Section: Supporting Native Biodiversity By Managing Exotic Speciesmentioning

confidence: 99%

‘Dual Purpose’ Surface Flow Constructed Treatment Wetlands Support Native Biodiversity in Intensified Agricultural Landscapes

Goeller

Sukias

Woodward

et al. 2023

Water

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In agricultural landscapes, free-water surface flow wetlands (FWS) are constructed mainly to improve water quality; however, their contribution to biodiversity conservation is increasingly recognised. To inform biodiversity management in FWS treating agricultural runoff, we surveyed the vegetation and fauna assemblages in five established FWS in a lowland, pastoral landscape in the central North Island, New Zealand. The FWS had been established for between 3 and 19 years, planted with a restricted range of native plant species, and fenced to exclude livestock access. Larger wetlands hosted significantly more plant and mammal species. However, other than wetland size, we found few other significant relationships between wetland habitat, landscape characteristics, and measures of biodiversity (total species, proportion of native species, number of wetland specialists, or threatened species). We recorded one-hundred and thirteen plant, twenty bird, five mammal, eighty-five terrestrial invertebrates, forty-seven aquatic invertebrates, six fish, and two amphibian species inhabiting the FWS. Native species comprised 96% of the total aquatic invertebrate fauna identified. For other taxa, native flora and fauna accounted for half or less than half of all species identified: 53% terrestrial invertebrates, 50% fish, 45% birds, 32% plants, and 0% amphibian and mammal species. Few wetland specialists (aquatic or wetland-adapted) or threatened native species were detected, probably reflecting the limited range of wetland plant species in initial plantings and the difficulties native taxa face when colonising new habitat where potential reservoirs of colonist species are also depauperate or too distant. FWS support native biodiversity, but further enhancements may require active management of exotic and pest species to minimise competition or predation on native species.

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Section: Supporting Native Biodiversity By Managing Exotic Speciesmentioning

confidence: 99%

‘Dual Purpose’ Surface Flow Constructed Treatment Wetlands Support Native Biodiversity in Intensified Agricultural Landscapes

Goeller

Sukias

Woodward

et al. 2023

Water

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“…; Bovill et al . ; Smith & Reid ). Even more fundamentally, such studies require that ecologists can identify and quantify eggs, either in the field or in laboratory‐processed samples.…”

Section: Introductionmentioning

confidence: 99%

“…The aim of this paper is to provide descriptions and images of the egg masses of some caddisflies in the family Hydrobiosidae that commonly occur in south‐eastern Australia. Some Hydrobiosidae and their egg masses have already featured as model systems to test ecological ideas in Australia (references below) and New Zealand (Smith & Reid ; Storey et al . ), and there is scope for further useful research using this system.…”

Section: Introductionmentioning

confidence: 99%

Egg masses of some stream‐dwelling caddisflies (Trichoptera: Hydrobiosidae) from Victoria, Australia

Lancaster

Glaister

2018

Austral Entomology

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Eggs are a largely neglected life stage in most ecological studies of aquatic insects, despite the importance of oviposition behaviour and fecundity estimates for many research questions. Incorporating egg stages into ecological research requires that ecologists can identify and quantify eggs, but descriptions of eggs and egg masses are scarce for many groups and particularly for Australian taxa. This paper focusses on stream-dwelling caddisflies in the family Hydrobiosidae and provides species-level identifications, morphological descriptions and images of egg masses of some species that commonly occur in south-eastern Australia. All the species we identified laid plaque-shaped egg masses attached to the underside of river rocks that protrude above the water surface. These egg masses can be identified in the field with the naked eye or the aid of a low-magnification hand lens. Interspecific variations in egg mass morphology were primarily thickness and firmness of the spumaline layer, egg mass size and arrangement of eggs within the mass. We also provide some ecological information on clutch sizes and the physical characteristics of oviposition sites, and we discuss various ways in which these taxa could be exploited as model systems for ecological research.

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Risks for overwintering eggs of the dragonfly Sympetrum vicinum in aquatic and terrestrial environments

Martin

McCauley

2021

Hydrobiologia

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Silent assassins: predation of native New Zealand trichopteran eggs by non-native freshwater gastropods

Cited by 4 publications

References 29 publications

‘Dual Purpose’ Surface Flow Constructed Treatment Wetlands Support Native Biodiversity in Intensified Agricultural Landscapes

‘Dual Purpose’ Surface Flow Constructed Treatment Wetlands Support Native Biodiversity in Intensified Agricultural Landscapes

Egg masses of some stream‐dwelling caddisflies (Trichoptera: Hydrobiosidae) from Victoria, Australia

Risks for overwintering eggs of the dragonfly Sympetrum vicinum in aquatic and terrestrial environments

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