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Community recruitment: Settlement and juvenile survival of seven co-occurring species of sessile marine invertebrates

Community recruitment: Settlement and juvenile survival of seven co-occurring species of sessile... 227 109 109 3 3 C. J. Hurlbut Department of Zoology University of Hawaii 96822 Honolulu Hawaii USA Harbor Branch Oceanographic Institution 5600 Old Dixie Highway 34946 Fort Pierce Florida USA Abstract Recruitment of a group of co-occurring sessile invertebrates (a serpulid polychaete, an oyster, a bryozoan, and several colonial and one solitary ascidian) that encrust floating docks in Pearl Harbor, Hawaii, was studied in August 1985. Daily photographs were taken of acrylic settling plates over a 14 d period, and daily settlement and juvenile mortality were measured. Settlement rates were compared between species and days, while juvenile mortalities were compared between species, days, juvenile ages and densities of juveniles on the plates. Species differed in abundance of both settlers and juveniles, and in rate and pattern of juvenile mortality. Settlement intensity varied between days for some species. Significant juvenile mortality occurred during the 14 d for most species; it appeared to be caused by fish predation. For two species, mortality varied with juvenile age, with older individuals suffering higher mortality. Mortality was density-dependent for some species, increasing with numbers of juveniles on the plates. Mortality patterns varied even within the colonial species. Assessing larval settlement and juvenile mortality for a single species or type of organism in a community thus may not indicate that similar patterns exist for co-occurring species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine Biology Springer Journals

Community recruitment: Settlement and juvenile survival of seven co-occurring species of sessile marine invertebrates

Marine Biology , Volume 109 (3) – Oct 1, 1991

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References (26)

Publisher
Springer Journals
Copyright
Copyright © 1991 by Springer-Verlag
Subject
Life Sciences; Biomedicine general; Oceanography; Ecology; Microbiology; Zoology
ISSN
0025-3162
eISSN
1432-1793
DOI
10.1007/BF01313517
Publisher site
See Article on Publisher Site

Abstract

227 109 109 3 3 C. J. Hurlbut Department of Zoology University of Hawaii 96822 Honolulu Hawaii USA Harbor Branch Oceanographic Institution 5600 Old Dixie Highway 34946 Fort Pierce Florida USA Abstract Recruitment of a group of co-occurring sessile invertebrates (a serpulid polychaete, an oyster, a bryozoan, and several colonial and one solitary ascidian) that encrust floating docks in Pearl Harbor, Hawaii, was studied in August 1985. Daily photographs were taken of acrylic settling plates over a 14 d period, and daily settlement and juvenile mortality were measured. Settlement rates were compared between species and days, while juvenile mortalities were compared between species, days, juvenile ages and densities of juveniles on the plates. Species differed in abundance of both settlers and juveniles, and in rate and pattern of juvenile mortality. Settlement intensity varied between days for some species. Significant juvenile mortality occurred during the 14 d for most species; it appeared to be caused by fish predation. For two species, mortality varied with juvenile age, with older individuals suffering higher mortality. Mortality was density-dependent for some species, increasing with numbers of juveniles on the plates. Mortality patterns varied even within the colonial species. Assessing larval settlement and juvenile mortality for a single species or type of organism in a community thus may not indicate that similar patterns exist for co-occurring species.

Journal

Marine BiologySpringer Journals

Published: Oct 1, 1991

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