Sexual size dimorphism of two common European percid fish: linkage with spatial distribution and diet.
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F22%3A00557050" target="_blank" >RIV/60077344:_____/22:00557050 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/00216208:11310/22:10454792
Výsledek na webu
<a href="https://doi.org/10.1007/s10750-022-04844-6" target="_blank" >https://doi.org/10.1007/s10750-022-04844-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10750-022-04844-6" target="_blank" >10.1007/s10750-022-04844-6</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Sexual size dimorphism of two common European percid fish: linkage with spatial distribution and diet.
Popis výsledku v původním jazyce
Many fish species exhibit female-biased size dimorphism that may lead to spatial segregation of sexes. We selected two common European percids (Percidae, European perch Perca fluviatilis and ruffe Gymnocephalus cernua) differing in total body size, reproduction mode, habitat use and diurnal activity, to test whether they display size dimorphism and its effect on habitat use and diet. Females were significantly larger than equally old males (by 76% in perch, 23% in ruffe). No differences in habitat use by sexes were found along depth and longitudinal gradients of reservoir or between inshore and offshore habitats. Perch females had fuller guts, but both sexes were equally likely to consume same prey items (Leptodora kindtii, Daphnia spp., Chironomidae larvae, fish). Both sexes of ruffe had similar stomachs fullness, but females preferred L. kindtii and males Asellus aquaticus. In summary, perch and ruffe show strong female-biased size dimorphism, but sexes do not segregate spatially. Their unequal sex-specific dietary demands are satisfied by higher feeding rate of female perch and by preference for different prey items in ruffe. The magnitude of dimorphism was related to species body size and reproduction mode being larger in larger species and in total spawner (perch).
Název v anglickém jazyce
Sexual size dimorphism of two common European percid fish: linkage with spatial distribution and diet.
Popis výsledku anglicky
Many fish species exhibit female-biased size dimorphism that may lead to spatial segregation of sexes. We selected two common European percids (Percidae, European perch Perca fluviatilis and ruffe Gymnocephalus cernua) differing in total body size, reproduction mode, habitat use and diurnal activity, to test whether they display size dimorphism and its effect on habitat use and diet. Females were significantly larger than equally old males (by 76% in perch, 23% in ruffe). No differences in habitat use by sexes were found along depth and longitudinal gradients of reservoir or between inshore and offshore habitats. Perch females had fuller guts, but both sexes were equally likely to consume same prey items (Leptodora kindtii, Daphnia spp., Chironomidae larvae, fish). Both sexes of ruffe had similar stomachs fullness, but females preferred L. kindtii and males Asellus aquaticus. In summary, perch and ruffe show strong female-biased size dimorphism, but sexes do not segregate spatially. Their unequal sex-specific dietary demands are satisfied by higher feeding rate of female perch and by preference for different prey items in ruffe. The magnitude of dimorphism was related to species body size and reproduction mode being larger in larger species and in total spawner (perch).
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10618 - Ecology
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Hydrobiologia
ISSN
0018-8158
e-ISSN
1573-5117
Svazek periodika
849
Číslo periodika v rámci svazku
9
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
19
Strana od-do
2009-2027
Kód UT WoS článku
000780287500002
EID výsledku v databázi Scopus
2-s2.0-85127469067