Seasonal Mass Migration of Water Boatmen (Hemiptera: Corixidae) as a Wetland–River Linkage and Dietary Subsidy to Riverine Fish

Srayko, Stephen; Jardine, Timothy D.; Phillips, Iain D.; Chivers, Douglas P.

doi:10.1007/s10021-021-00734-5

Cited by 5 publications

(1 citation statement)

References 51 publications

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“…Huang et al (2022) and Watts) mentioned that the anatomy of mouth parts and the physiology of organisms likely affect the ingestion of MPs. It is important to note that Corixidae are eaten by fish, birds, and humans (Srayko et al 2022). Therefore, they may act as vectors that introduce MPs to food webs and another aquatic system since the adults can fly and disperse widely, and rapidly invade new habitats (Souty-Grosset et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Can water mites’ parasitism influence the number of microplastics ingested by aquatic insects?

Khedre,

Ramadan,

Ashry

et al. 2024

Appl Water Sci

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Microplastic pollution endangers both aquatic and terrestrial ecosystems. Their spread across the food chain also endangers human health. Wastewater treatment plants (WWTPs) can be viewed as the final barrier between microplastics and the environment. In addition, it is well-known that water mites are abundant parasites in aquatic ecosystems, and nearly all insect orders with aquatic stages are considered potential hosts for at least one water mite species. However, no studies have been conducted to test the direct and indirect effects of parasites on population dynamics in freshwater ecosystems or the role of predators in shaping the behavior and life histories of aquatic organisms. Thus, this work aimed to study the seasonal abundance, distribution, composition, and risk assessment of MPs in surface water, aquatic insects (Coroxide and Notonectidae), and for the first time, water mites (Hydrachnidiae), as well as the effect of water mites’ parasitism on the number of MPs ingested by aquatic insects in two of the most polluted wastewater sites (S1 and S2) in Sohag Governorate, Egypt. The two wastewater sites receive different wastewater inputs (domestic and industrial). The results showed that the MPs abundance in surface water was higher in S2 than in S1 during the four seasons of the year, where the microplastic abundance in surface water was 2.05 ± 0.79 and 3.01 ± 0.9 particles/L in S1 and S2, respectively. Also, MPs were significantly higher in S2 in two insect taxa (Corixidae and Notonectidae) that are known to be infected by water mites. In contrast, the number of MPs was lower in S1, where water mites were absent. In addition, our results showed that adult water mites accumulated MPs. Overall, the 500–2000 µm size range was the most prevalent for both wastewater sites. Fibers were the most common MP morphotype discovered, followed by fragments. The dominant colors of MP were blue, red, and black. Furthermore, FTIR spectroscopy revealed the existence of three distinct polymers, namely polyester (PES), polypropylene (PP), and polyethylene (PE). To the best of our knowledge, this is the first study to examine the effect of water mites’ parasitism on the number of MPs ingested by aquatic organisms. However, Further research is needed to confirm our suggestion.

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Section: Discussionmentioning

confidence: 99%

Can water mites’ parasitism influence the number of microplastics ingested by aquatic insects?

Khedre,

Ramadan,

Ashry

et al. 2024

Appl Water Sci

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Sulfur stable isotopes as a tracer of insect migration and consumption by fish predators

et al. 2023

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Sequential migrations of diverse fish community provide seasonally prolonged and stable nutrient inputs to a river

Kurasawa,

Onishi,

Koba

et al. 2024

Sci. Adv.

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Animal migrations transport resources among spatially separate ecosystems, effectively linking them. In freshwater ecosystems, numerous fish species migrate between mainstream rivers or lakes and their tributaries, providing resources and nutrients during their spawning migrations. Multiple migratory species travel to the same destinations and contribute such nutrients, but knowledge remains limited about how the diversity of migratory animals influences the recipient ecosystem. We investigated how migrations of diverse fish community from Lake Biwa, Japan contribute to nutrient inputs in one of the lake’s tributary rivers and how they influence the ecosystem. Sequential migration of six fish species continued for 8 months of a year, causing high-level nutrient concentration and primary production. The fish-derived resources were taken up by diverse members of the river community. Our results emphasize the extent to which migrations of diverse animals seasonally extend and stabilize the resource subsidy and how they extend pronounced effects on the recipient ecosystems.

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Seasonal Mass Migration of Water Boatmen (Hemiptera: Corixidae) as a Wetland–River Linkage and Dietary Subsidy to Riverine Fish

Cited by 5 publications

References 51 publications

Can water mites’ parasitism influence the number of microplastics ingested by aquatic insects?

Can water mites’ parasitism influence the number of microplastics ingested by aquatic insects?

Sulfur stable isotopes as a tracer of insect migration and consumption by fish predators

Sequential migrations of diverse fish community provide seasonally prolonged and stable nutrient inputs to a river

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