Skip to main content
Dryad

Diverse host-parasite interactions mediate seasonal ecosystem linkages

Cite this dataset

Asakura, Hinako et al. (2024). Diverse host-parasite interactions mediate seasonal ecosystem linkages [Dataset]. Dryad. https://doi.org/10.5061/dryad.gtht76htn

Abstract

Nematomorph parasites manipulate terrestrial arthropods, such as crickets and ground beetles, to enter streams where the parasites reproduce. These manipulated arthropods become a substantial prey subsidy for stream salmonids, causing cross-ecosystem energy flow. Diverse nematomorph-arthropod interactions are known to underlie the energy flow. However, whether and how they can mediate the magnitude and temporal attributes of energy flow remains largely unknown. Here, we investigated whether distinct species or phylogenetic groups of nematomorphs respectively manipulate different arthropod hosts, and how the diverse nematomorph-arthropod interactions, if any, mediate seasonal prey subsidy for stream salmonids. We found that distinct phylogenetic groups of Gordionus and Gordius nematomorphs infected ground beetle and orthopteran hosts, respectively. The Gordionus nematomorphs led their ground beetle hosts to enter streams in spring, subsidizing salmonid individuals during that season. By contrast, the Gordius nematomorphs manipulated orthopterans in autumn, causing the prey subsidy for salmonid individuals during that time. Maintaining the two distinct nematomorph-arthropod interactions, thus, resulted in the parasite-mediated prey subsidy in both spring and autumn in the study streams. Manipulative parasites are common, and they often associate with a range of host lineages, suggesting that similar effects of diverse host-parasite interactions on energy flow might be widespread in nature.

README: Data for the manuscript entitled "Diverse host-parasite interactions mediate seasonal ecosystem linkages"

https://doi.org/10.5061/dryad.gtht76htn

Description of the data and file structure

List of variables present in the data file:

No: running number of data

date: year/month/date

round: rounds of electrofishing

time: AM or PM

season: spring [late May], summer [early July], autumn [late August-early September] and winter [mid-November]

temperature: water temperature at the sampring (℃)

stream: name of the stream

species: abbreviation for the common name of a salmonid individual

fl: folk length of a salmonid individual (mm)

wet_mass: wet mass of a salmonid individual (g)

dry_mass: dry mass of a salmonid individual (mg)

ground_beetles: presence(1) or absence(0) of ground beetles in the stomach content of a salmonid individual

orthopterans: presence(1) or absence(0) of orthopterans in the stomach content of a salmonid individual

nematomorphs: presence(1) and absence(0) of nematomorphs in the stomach content of a salmonid individual

WM_ground_beetles: wet mass of ground beetles consumed by a salmonid individual (g)

WM_orthopterans: wet mass of orthopterans consumed by a salmonid individual (g)

WM_nematomorphs: wet mass of nematomorphs consumed by a salmonid individual (g)

WM_others: wet mass of invertebrates other than grond beetles, orthopterans and nematomorphs and vertebrates consumed by a salmonid individual (g)

WM_sum: total wet mass of prey consumed by a salmonid individual (g)

DM_ground_beetles: dry mass of ground beetles consumed by a salmonid individual (mg)

DM_orthopterans: dry mass of orthopterans consumed by a salmonid individual (mg)

DM_nematomorphs: dry mass of nematomorphs consumed by a salmonid individual (mg)

DM_others: dry mass of invertebrates other than grond beetles, orthopterans and nematomorphs and vertebrates consumed by a salmonid individual (mg)

DM_sum: total dry mass of prey consumed by a salmonid individual (mg)

Sharing/Access information

Please contact the corresponding author (Hinako Asakura: asakura@ecology.kyoto-u.ac.jp) if you are interested in using the data.

Methods

Fish sampling was conducted in Koitoi stream, Uenai stream and Yuuburi stream, which are located in the mid-southern region of Hokkaido, Japan. Stomach contents were classified as nematomorphs, presumed hosts of nematomorphs (ground beetles and orthopterans) and non-host invertebrates (including both aquatic and terrestrial invertebrates) and vertebrates (i.e., fish). Each category was weighted in nearest 1 mg in wet mass.

Funding

Japan Science and Technology Agency, Award: JPMJFR211C, FOREST

Japan Society for the Promotion of Science, Award: 20K21439

Japan Society for the Promotion of Science, Award: 22H02694

Japan Society for the Promotion of Science, Award: 22H04983

Japan Society for the Promotion of Science, Award: 22j11821

Japan Society for the Promotion of Science, Award: JP23H00532

Ministry of Education, Culture, Sports, Science and Technology, "Joint usage / Education Center" in Forest Research Station, Field Science Center for Northern Biosphere