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Episodic recruitment and cohort dominance in echinoidpopulations at bathyal depths
| Title: | Episodic recruitment and cohort dominance in echinoidpopulations at bathyal depths. |
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| Name(s): |
Young, Craig M. Harbor Branch Oceanographic Institute |
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| Type of Resource: | text | |
| Genre: | Article | |
| Date Issued: | 1992 | |
| Publisher: | Olsen & Olsen | |
| Place of Publication: | Fredensborg, Denmark | |
| Physical Form: | ||
| Extent: | 9 p. | |
| Language(s): | English | |
| Identifier: | FA00007211 (IID), 10.1017/S0025315400060033 (doi) | |
| Note(s): |
Between 1985 and 1990, population processes were inferred from size-frequency distributions of 21 species
of bathyal echinoids collected by submersible in Bahamian waters. All species studied reproduce by means
of long-lived planktonic larvae. Local populations mostly consisted of larger individuals; cohorts of recent
recruits were observed only rarely. Growth of individuals in a cohort was evident between sequential samples
of several populations, but Palaeobrissus hilgardi sampled at San Salvador over a three-year period had a stable
size distribution with no apparent growth, recruitment or size-specific mortality. On a regional basis, bathy·
metric range width was correlated significantly with a measure of recruitment frequency, suggesting that
species with less stringent habitat requirements recruit more successfully on the bathyal slope. Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 831 This manuscript is an author version with the final publication available and may be cited as: Young, C. M. (1992). Episodic recruitment and cohort dominance in echinoid populations at bathyal depths. In G. Columbo et al. (Eds.). Marine eutrophication and population dynamics: 25th European Marine Biology Symposium (pp. 239-246). Fredensborg: Olsen & Olsen. |
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| Subject(s): |
Echinodermata Holothuroidea Sea cucumbers Ovaries--Ultrastructure Vitellogenesis |
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| Links: | http://dx.doi.org/10.1017/S0025315400060033 | |
| Persistent Link to This Record: | http://purl.flvc.org/fau/fd/FA00007211 | |
| Host Institution: | FAU |
