Evolution of predator–prey interactions during range expansion in an aquatic insect predator

نویسندگان

چکیده

Many ectotherms are shifting their distributions polewards, which has been associated with the evolution of phenotypic traits and thermal plasticity. Trophic interactions may determine dynamics ecological impact range expansions. However, it is largely unknown how trait in edge populations shapes trophic interactions. We studied evolutionary changes short-term (functional response) long-term predator–prey between an aquatic insect predator (the damselfly Ischnura elegans) its prey water flea Daphnia magna) during predator's ongoing poleward expansion northern Europe. Using a common-garden warming experiment at 20 24°C we tested for differentiation from core regions metabolic rate functional response parameters, used these empirical data to estimate effects on short- interaction strengths. Metabolic rates did not differ nor rearing temperatures. Functional parameters plasticity showed signals expansion. Attack predators regions, but only decreased under region. Handling times region increased While handling were shorter 20°C, 24°C. As result, strength was higher different The system lower stability this difference disappeared because then increased. Our results suggest that rapid reduced direct feeding made more unstable, warming. This provides rare evidence responses can rapidly evolve expansions, potentially destabilizing food web dynamics. Read free Plain Language Summary article Journal blog.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Variation in predator foraging behaviour changes predatorprey spatiotemporal dynamics

1. Foraging underlies the ability of all animals to acquire essential resources and thus provides a critical link to understand population dynamics. A key issue is how variation in foraging behaviour affects foraging efficiency and predator–prey interactions in spatially heterogeneous environments. However, there is very little quantitative information available on this topic. 2. We evaluated t...

متن کامل

An Aquatic Insect Imaging System

Population counts of aquatic insects are a valuable tool for monitoring the water quality of rivers and streams. However, the handling of samples in the lab for species identification is time consuming and requires specially trained experts. An aquatic insect imaging system was designed as part of a system to automate aquatic insect classification and was tested using several species and size c...

متن کامل

Habitat heterogeneity and mammalian predatorprey interactions

1. In predator–prey theory, habitat heterogeneity can affect the relationship between kill rates and prey or predator density through its effect on the predator’s ability to search for, encounter, kill and consume its prey. Many studies of predator– prey interactions include the effect of spatial heterogeneity, but these are mostly based on species with restricted mobility or conducted in exper...

متن کامل

Evolutionary constraints on adaptive evolution during range expansion in an invasive plant.

Biological invasions may expose populations to strong selection for local adaptation along geographical gradients in climate. However, evolution during contemporary timescales can be constrained by low standing genetic variation and genetic correlations among life-history traits. We examined limits to local adaptation associated with northern migration of the invasive wetland plant purple loose...

متن کامل

Environmental constraints upon locomotion and predator-prey interactions in aquatic organisms: an introduction.

Environmental constraints in aquatic habitats have become topics of concern to both the scientific community and the public at large. In particular, coastal and freshwater habitats are subject to dramatic variability in various environmental factors, as a result of both natural and anthropogenic processes. The protection and sustainable management of all aquatic habitats requires greater unders...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Functional Ecology

سال: 2022

ISSN: ['0269-8463', '1365-2435']

DOI: https://doi.org/10.1111/1365-2435.14208