Decryption of Amphipod Cryptic Species: Ecological
Differentiation of Syntopic Lineages of a Gammarus Species
Complex

J 2025

Decryption of Amphipod Cryptic Species: Ecological Differentiation of Syntopic Lineages of a Gammarus Species Complex

BYSTRICKY, Pavel Karel; Tereza Novotna JAROMERSKA; Linda VOTRUBOVA; Jindřiška BOJKOVÁ; Magdalena GAJDOSOVA et al.

Základní údaje

Originální název

Decryption of Amphipod Cryptic Species: Ecological Differentiation of Syntopic Lineages of a Gammarus Species Complex

Autoři

Vydání

FRESHWATER BIOLOGY, WILEY, 2025, 0046-5070

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL, URL

Impakt faktor

Impact factor: 2.700 v roce 2024

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/25:00144622

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

coexistence; functional morphology; Gammarus fossarum; stable isotopes; trophic ecology

Štítky

14314020, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 26. 1. 2026 14:16, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Cryptic species represent an ever-increasing proportion of discovered biological diversity. Thus, the number of observations of cryptic species co-occurring in syntopy also increases, raising the question of mechanisms facilitating this phenomenon. Gammarus fossarum is a widespread, ecologically important, and diversified cryptic species complex with dozens of deeply divergent lineages of Miocene origin, some of which have been observed in syntopy in its European range. We used a multifaceted approach to study the ecology of two syntopic, genetically differentiated G. fossarum lineages in the stable environment of a calcareous spring fen. We investigated the effects of spatial distribution of sampling sites and local environmental factors (water chemistry, substrate composition) on the fine-scale distribution of the two lineages, together with their trophic ecology (delta 13C, delta 15N and gut content analysis). Moreover, we assessed functional morphological differentiation of the lineages, and compared identification based on mitochondrial DNA with variation at three nuclear markers to confirm their reproductive isolation. Small-scale syntopy of both lineages prevailed across the studied locality, having been observed at 14 out of 15 sampling spots. Lineage ratios varied within the spring fen; they were significantly affected by spatial proximity between the sampling spots, but not by local environmental conditions. The two lineages significantly differed in body size as well as trophic niche. However, they were essentially morphologically indistinguishable, although significant shifts were observed in a few phenotypic traits mainly related to feeding. The lack of nuclear allele sharing confirmed the existence of a strong reproductive barrier between them. The two studied G. fossarum lineages are reproductively isolated species that significantly differ in trophic ecology and body size in syntopy. Their local coexistence may thus be facilitated by trophic niche differentiation due to alternative resource use. Our results add to the growing body of evidence that morphologically cryptic species may not be functionally fully equivalent, indicating that cryptic species complexes may be more ecologically differentiated than currently known.

Návaznosti

GA23-05268S, projekt VaV

Název: Souvislost mezi oteplováním klimatu a rostoucí druhovou bohatostí bezobratlých v tekoucích vodách: od historických dat po experimenty

Investor: Grantová agentura ČR, Souvislost mezi oteplováním klimatu a rostoucí druhovou bohatostí bezobratlých v tekoucích vodách: od historických dat po experimenty

Citovat

BYSTRICKY, Pavel Karel; Tereza Novotna JAROMERSKA; Linda VOTRUBOVA; Jindřiška BOJKOVÁ; Magdalena GAJDOSOVA; Veronika HORSÁKOVÁ; Petr Jan JURACKA; Natasa KATANIC; David NOVOTNY; Lukas VESELY; Denis COPILAS-CIOCIANU; Michal HORSÁK a Adam PETRUSEK. Decryption of Amphipod Cryptic Species: Ecological Differentiation of Syntopic Lineages of a Gammarus Species Complex. FRESHWATER BIOLOGY. WILEY, 2025, roč. 70, č. 7, s. 1-13. ISSN 0046-5070. Dostupné z: https://doi.org/10.1111/fwb.70071.

@article{2547900,
   author = {Bystricky, Pavel Karel and Jaromerska, Tereza Novotna and Votrubova, Linda and Bojková, Jindřiška and Gajdosova, Magdalena and Horsáková, Veronika and Juracka, Petr Jan and Katanic, Natasa and Novotny, David and Vesely, Lukas and CopilasandCiocianu, Denis and Horsák, Michal and Petrusek, Adam},
   article_number = {7},
   doi = {https://doi.org/10.1111/fwb.70071},
   keywords = {coexistence; functional morphology; Gammarus fossarum; stable isotopes; trophic ecology},
   language = {eng},
   issn = {0046-5070},
   journal = {FRESHWATER BIOLOGY},
   title = {Decryption of Amphipod Cryptic Species: Ecological Differentiation of Syntopic Lineages of a Gammarus Species Complex},
   url = {https://doi.org/10.1111/fwb.70071},
   volume = {70},
   year = {2025}
}

TY  - JOUR
ID  - 2547900
AU  - Bystricky, Pavel Karel - Jaromerska, Tereza Novotna - Votrubova, Linda - Bojková, Jindřiška - Gajdosova, Magdalena - Horsáková, Veronika - Juracka, Petr Jan - Katanic, Natasa - Novotny, David - Vesely, Lukas - Copilas-Ciocianu, Denis - Horsák, Michal - Petrusek, Adam
PY  - 2025
TI  - Decryption of Amphipod Cryptic Species: Ecological Differentiation of Syntopic Lineages of a Gammarus Species Complex
JF  - FRESHWATER BIOLOGY
VL  - 70
IS  - 7
SP  - 1-13
EP  - 1-13
PB  - WILEY
SN  - 00465070
KW  - coexistence
KW  - functional morphology
KW  - Gammarus fossarum
KW  - stable isotopes
KW  - trophic ecology
UR  - https://doi.org/10.1111/fwb.70071
N2  - Cryptic species represent an ever-increasing proportion of discovered biological diversity. Thus, the number of observations of cryptic species co-occurring in syntopy also increases, raising the question of mechanisms facilitating this phenomenon. Gammarus fossarum is a widespread, ecologically important, and diversified cryptic species complex with dozens of deeply divergent lineages of Miocene origin, some of which have been observed in syntopy in its European range. We used a multifaceted approach to study the ecology of two syntopic, genetically differentiated G. fossarum lineages in the stable environment of a calcareous spring fen. We investigated the effects of spatial distribution of sampling sites and local environmental factors (water chemistry, substrate composition) on the fine-scale distribution of the two lineages, together with their trophic ecology (delta 13C, delta 15N and gut content analysis). Moreover, we assessed functional morphological differentiation of the lineages, and compared identification based on mitochondrial DNA with variation at three nuclear markers to confirm their reproductive isolation. Small-scale syntopy of both lineages prevailed across the studied locality, having been observed at 14 out of 15 sampling spots. Lineage ratios varied within the spring fen; they were significantly affected by spatial proximity between the sampling spots, but not by local environmental conditions. The two lineages significantly differed in body size as well as trophic niche. However, they were essentially morphologically indistinguishable, although significant shifts were observed in a few phenotypic traits mainly related to feeding. The lack of nuclear allele sharing confirmed the existence of a strong reproductive barrier between them. The two studied G. fossarum lineages are reproductively isolated species that significantly differ in trophic ecology and body size in syntopy. Their local coexistence may thus be facilitated by trophic niche differentiation due to alternative resource use. Our results add to the growing body of evidence that morphologically cryptic species may not be functionally fully equivalent, indicating that cryptic species complexes may be more ecologically differentiated than currently known.
ER  -

BYSTRICKY, Pavel Karel; Tereza Novotna JAROMERSKA; Linda VOTRUBOVA; Jindřiška BOJKOVÁ; Magdalena GAJDOSOVA; Veronika HORSÁKOVÁ; Petr Jan JURACKA; Natasa KATANIC; David NOVOTNY; Lukas VESELY; Denis COPILAS-CIOCIANU; Michal HORSÁK a Adam PETRUSEK. Decryption of Amphipod Cryptic Species: Ecological Differentiation of Syntopic Lineages of a Gammarus Species Complex. \textit{FRESHWATER BIOLOGY}. WILEY, 2025, roč.~70, č.~7, s.~1-13. ISSN~0046-5070. Dostupné z: https://doi.org/10.1111/fwb.70071.

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