Multiple environmental cues impact habitat choice during nocturnal homing of specialized reef shrimp. (15th December 2018)

• Record Type: Journal Article
• Authors: Ashur, Molly M; Dixson, Danielle L
• Is Part Of: Behavioral ecology. Volume 30:Number 2(2019)
• Page Start: 348
• Page End: 355
• Publication Date: 2018-12-15
• Subjects: coral reef -- habitat selection -- homing -- Lysmata pederseni -- peppermint shrimp -- sensory systems -- sponges; Animal behavior -- Periodicals; Behavior evolution -- Periodicals; Ecology -- Periodicals; Psychology, Comparative -- Periodicals; 591.5
• DOI: 10.1093/beheco/ary171
• Languages: English
• ISSNs: 1045-2249

Abstract

Abstract: Habitat selection is a critical process for animals throughout their life, and adult organisms that travel to forage or mate must reselect habitat frequently. On coral reefs, competition for space has led to a high proportion of habitat specialists. Habitat selection is especially vital for organisms that require specialized habitat; however, research has primarily focused on the initial habitat choice made during the larval/juvenile stage. Here, we analyze habitat selection in the adult sponge-dwelling reef shrimp, Lysmata pederseni . Using a mark-and-recapture technique, belt transects, patch reefs, and cue isolation experiments, this study reveals that adult L. pederseni diurnally reselect habitat and a natural preference exists for specific sponge species and shapes. This natural preference is a function of chemical and morphological cues as well as sponge distribution. As habitat specialists can drive biodiversity, understanding the mechanisms behind habitat selection can inform research and management practices. Abstract : Is architecture more important than smell when choosing a home? Here, we investigate the external cues involved in habitat selection of a sponge-associated shrimp after nightly forays on the reef. By tracking shrimp locations through time and isolating environmental variables, we conclude that while both sponge shape and chemical cues play a role in habitat selection, shape may be a more critical factor for resident shrimp.