Benthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)

Settlement is the last stage of high mortality in the life cycle of demersal marine fishes, making the number of larvae that successfully settle to a benthic habitat a predictor of future population size. Habitat selection is an active settlement process for coral reef fishes, however, there has bee...

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Autores principales:	LN Havel, LA Fuiman, AF Ojanguren
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2015
Materias:	Biology (General) QH301-705.5 Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/962c4081033d4734b79db88c4f1523fa
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spelling	oai:doaj.org-article:962c4081033d4734b79db88c4f1523fa2021-11-18T09:18:12ZBenthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)1864-77821864-779010.3354/ab00639https://doaj.org/article/962c4081033d4734b79db88c4f1523fa2015-09-01T00:00:00Zhttps://www.int-res.com/abstracts/ab/v24/n2/p81-90/https://doaj.org/toc/1864-7782https://doaj.org/toc/1864-7790Settlement is the last stage of high mortality in the life cycle of demersal marine fishes, making the number of larvae that successfully settle to a benthic habitat a predictor of future population size. Habitat selection is an active settlement process for coral reef fishes, however, there has been less research about settlement in other ecosystems. This study used laboratory and field experiments to examine the relationship between size and settlement over various substrates in red drum Sciaenops ocellatus, a temperate and subtropical estuarine species. In the laboratory, vertical position of fish (4.3 to 40.0 mm standard length [SL]) was recorded in the presence of sand, oyster shells, or seagrass to determine median settlement size. Median settlement size was 12.9 mm SL for seagrass, 15.8 mm SL for sand, and 20.5 mm SL for oyster shells. To determine the size at which fish settle in the wild, vertically partitioned field enclosures were used to separate individuals (5.2 to 37.3 mm SL) in the water column (>16 cm from the sediment) from those in the seagrass (<16 cm from the sediment). Larvae in the water column were smaller than in the seagrass (9.3 vs. 14.3 mm SL). Previous studies reported that red drum reach nursery habitats at 4 mm SL, but this study suggests that they do not use structured habitats at first. Instead, this fish settles at different sizes to various habitats, which can be interpreted as evidence for active settlement.LN HavelLA FuimanAF OjangurenInter-ResearcharticleBiology (General)QH301-705.5MicrobiologyQR1-502ENAquatic Biology, Vol 24, Iss 2, Pp 81-90 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5 Microbiology QR1-502
spellingShingle	Biology (General) QH301-705.5 Microbiology QR1-502 LN Havel LA Fuiman AF Ojanguren Benthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)
description	Settlement is the last stage of high mortality in the life cycle of demersal marine fishes, making the number of larvae that successfully settle to a benthic habitat a predictor of future population size. Habitat selection is an active settlement process for coral reef fishes, however, there has been less research about settlement in other ecosystems. This study used laboratory and field experiments to examine the relationship between size and settlement over various substrates in red drum Sciaenops ocellatus, a temperate and subtropical estuarine species. In the laboratory, vertical position of fish (4.3 to 40.0 mm standard length [SL]) was recorded in the presence of sand, oyster shells, or seagrass to determine median settlement size. Median settlement size was 12.9 mm SL for seagrass, 15.8 mm SL for sand, and 20.5 mm SL for oyster shells. To determine the size at which fish settle in the wild, vertically partitioned field enclosures were used to separate individuals (5.2 to 37.3 mm SL) in the water column (>16 cm from the sediment) from those in the seagrass (<16 cm from the sediment). Larvae in the water column were smaller than in the seagrass (9.3 vs. 14.3 mm SL). Previous studies reported that red drum reach nursery habitats at 4 mm SL, but this study suggests that they do not use structured habitats at first. Instead, this fish settles at different sizes to various habitats, which can be interpreted as evidence for active settlement.
format	article
author	LN Havel LA Fuiman AF Ojanguren
author_facet	LN Havel LA Fuiman AF Ojanguren
author_sort	LN Havel
title	Benthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)
title_short	Benthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)
title_full	Benthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)
title_fullStr	Benthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)
title_full_unstemmed	Benthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)
title_sort	benthic habitat properties can delay settlement in an estuarine fish (sciaenops ocellatus)
publisher	Inter-Research
publishDate	2015
url	https://doaj.org/article/962c4081033d4734b79db88c4f1523fa
work_keys_str_mv	AT lnhavel benthichabitatpropertiescandelaysettlementinanestuarinefishsciaenopsocellatus AT lafuiman benthichabitatpropertiescandelaysettlementinanestuarinefishsciaenopsocellatus AT afojanguren benthichabitatpropertiescandelaysettlementinanestuarinefishsciaenopsocellatus
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Benthic habitat properties can delay settlement in an estuarine fish (Sciaenops ocellatus)

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