Group intrusions by a brood parasitic fish are not cooperative

BLAŽEK, Radim, Matej POLACIK a Martin REICHARD. Group intrusions by a brood parasitic fish are not cooperative. Behavioral Ecology. Oxford University Press, 2022, roč. 33, č. 1, s. 178-183. ISSN 1045-2249. Dostupné z: https://dx.doi.org/10.1093/beheco/arab123.

Základní údaje

• Originální název: Group intrusions by a brood parasitic fish are not cooperative
• Autoři: BLAŽEK, Radim (203 Česká republika, domácí), Matej POLACIK a Martin REICHARD (203 Česká republika, garant, domácí).
• Vydání: Behavioral Ecology, Oxford University Press, 2022, 1045-2249.

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Článek v odborném periodiku
• Obor: 10613 Zoology
• Stát vydavatele: Velká Británie a Severní Irsko
• Utajení: není předmětem státního či obchodního tajemství
• WWW: URL
• Impakt faktor: Impact factor: 2.400
• Kód RIV: RIV/00216224:14310/22:00127317
• Organizační jednotka: Přírodovědecká fakulta
• Doi: http://dx.doi.org/10.1093/beheco/arab123
• UT WoS: 000757960400018
• Klíčová slova anglicky: brood predation; cichlid fishes; cuckoo catfish; host; parasite
• Štítky: rivok
• Příznaky: Mezinárodní význam, Recenzováno

Anotace

Brood parasites relegate all parental duties to unrelated hosts. Host resistance against brood parasitism is most effective during egg laying and is best countered by surreptitious oviposition. This may be aided through distraction of host attention by the male partner or a larger cooperative group. Cuckoo catfish (Synodontis multipunctatus) parasitize the broods of mouthbrooding cichlids, which collect their eggs immediately after oviposition. Cuckoo catfish must time their intrusion precisely, as the temporal window for parasitism lasts only a few seconds. As the cuckoo catfish typically intrude host spawning as a group, we tested whether groups of catfish distract spawning cichlid pairs more successfully than a single catfish pair. We found that larger catfish groups were not more effective in parasitism, as parasitism success by groups of three catfish pairs increased only proportionally to single catfish pairs. The number of cichlid eggs in host clutches decreased at high catfish abundance, apparently due to elevated cuckoo catfish predation on the eggs. Hence, group intrusions do not represent cooperative actions, but incur an increased cost to the host cichlid from greater egg predation by cuckoo catfish.