Sigl, R; Steibl, S; Laforsch, C: The role of vision for navigation in the crown-of-thorns seastar, Acanthaster planci, Scientific Reports, 1-7 (2016), online: 01.08.2016, doi:10.1038/srep30834
Abstract:
Coral reefs all over the Indo-Pacific suffer from substantial damage caused by the crown-of-thorns seastar Acanthaster planci, a voracious predator that moves on and between reefs to seek out its coral prey. Chemoreception is thought to guide A. planci. As vision was recently introduced as another sense involved in seastar navigation, we investigated the potential role of vision for navigation in A. planci. We estimated the spatial resolution and visual field of the compound eye using histological sections and morphometric measurements. Field experiments in a semi-controlled environment revealed that vision in A. planci aids in finding reef structures at a distance of at least 5 m, whereas chemoreception seems to be effective only at very short distances. Hence, vision outweighs chemoreception at intermediate distances. A. planci might use vision to navigate between reef structures and to locate coral prey, therefore improving foraging efficiency, especially when multidirectional currents and omnipresent chemical cues on the reef hamper chemoreception.
Aktuelle Termine

BayCEER-Kolloquium:
Do. 09.07.2020
Physical constraints and biological controls of plant-environment interactions
Do. 09.07.2020
Presentations W1/W3 Professorship Geoinformatics and Spatial Big Data
Do. 16.07.2020
Verschoben auf WS 2020/21! Investigating communal pathogen defense and its role in social evolution
Ökologisch-Botanischer Garten:
Mi. 01.07.2020 aktuell
Alle Termine im Juli 2020 entfallen!
Fr. 03.07.2020 aktuell
Gewächshäuser ab sofort wieder geöffnet!
BayCEER Blog
13.01.2020
Why Science Communication?
24.05.2019
Stoichiometric controls of C and N cycling
07.05.2019
Flying halfway across the globe to dig in the dirt – a research stay in Bloomington, USA
07.05.2019
EGU – interesting research and free coffee
RSS Blog als RSS Feed
Wetter Versuchsflächen
Globalstrahlung: 699 W/m²
Lufttemperatur: 21.4 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: 7 h/d
Wind (Höhe 32m): 18.3 km/h

...mehr
Diese Webseite verwendet Cookies. weitere Informationen