. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 20 - 10 20 Larval age (days post-fertilization) Figure 1. Pacific acropond larvae exhibit a stringent requirement for contact with crustose red algae for metamorphosis; development and decay of metamorphic competence is dependent on larval age. (A) Metamorphosis of. Icm/inni iiiiMiiu larvae (3, Sand 7 days post-fertilization) in response to various crustose red algae and controls after 48 h incubation in 10 ml filtered seawater (FSW). Algae: 1 = ^m FSW alone (control); 2 - Lobophora niricxata (brown alga, control); 3 =
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 20 - 10 20 Larval age (days post-fertilization) Figure 1. Pacific acropond larvae exhibit a stringent requirement for contact with crustose red algae for metamorphosis; development and decay of metamorphic competence is dependent on larval age. (A) Metamorphosis of. Icm/inni iiiiMiiu larvae (3, Sand 7 days post-fertilization) in response to various crustose red algae and controls after 48 h incubation in 10 ml filtered seawater (FSW). Algae: 1 = ^m FSW alone (control); 2 - Lobophora niricxata (brown alga, control); 3 = Peyssonnelia sp.; 4 = Hydroliihtw reinhi/dii (form ;); 5 = llydrnlillinn n-inhnlilii (form //); 6 = Ilytlrolnhvn mnhnlilii (form //'/); 7 = Hy- ilniliiliuH rcinhii/tlii (form iv). Values are mean % (± 1 std. error) metamorphosis of five individuals in each of two trials (n = 2). Percentages were arcsine transformed for analysis. (B) Metamorphic response of Acropora digitifera larvae (3, 5 and 7 days post-fertilization) to algae and controls, as in (A). (C) Metamor- phosis of .-I naxnia larvae after a 48-h incubation with Peyssonnelia sp. (•) or a parallel exposure to FSW alone (O). Individual points represent ages (days post-fertilization) at challenge; metamorphosis (%) = mean; error bars = of n = 2 (days 3-7 or 3 (days > 7). (D) A digitifera larval response as for (C). (E)A. tennis larval response as for (C), n = 3 all days. Larvae of each species were obtained as follows: The maturity of coral gonads was confirmed (14): colonies were transferred from the reef to laboratory aquana and kept in darkness until the gamete clusters were ready to be released; the colonies were transferred to individual containers for spawning; gamete clusters from a single colony were collected and dispersed by sequential transfer into FSW; eggs and sperm were separated for immediate cross-fertilization with gametes of other colonies (> 95'i fertilization rate): all spawnings! I/speci
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
