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FIGURE 13 in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 13. Holotype of Elacatinus serranilla, Serranilla Bank, Caribbean Sea (photograph by P.L. Colin).

FIGURE 7 in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 7. Elacatinus colini at edge of the sponge Callyspongia vaginalis, Isla de Utila, Honduras (photograph by K.E. Clifton).

FIGURE 6 in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 6. Elacatinus colini on the sponge Callyspongia plicifera, Isla de Utila, Honduras (photograph by R.F. Myers).

FIGURE 5 in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 5. Elacatinus colini in the sponge Neofibularia nolitangere, Wee Wee Cay, Belize (photograph by P.L. Lobel).

FIGURE 2 in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 2. Holotype of Elacatinus colini on the coral Agaricia sp., Wee Wee Cay, Belize (photograph by P.L. Lobel).

FIGURE 3 in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 3. Elacatinus colini in the sponge Xestospongia muta, Wee Wee Cay, Belize (photograph by J.E. Randall).

FIGURE 1. A in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 1. A. Reef off Wee Wee Cay, where the holotype of Elacatinus colini was collected. B. Coastline of Belize (photograph by P.L. Lobel).

FIGURE 4 in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 4. Elacatinus colini on the sponge Amphimedon compressa, Pelican Cays, Belize (photograph by P.L. Lobel).

FIGURE 16 in A literature review of the sponge-dwelling gobiid fishes of the genus Elacatinus from the western Atlantic, with description of two new Caribbean species

FIGURE 16. Distribution of Elacatinus xanthiprora (yellow spots in Florida), E. colini (red spots in Belize and Islas de la Bahía), E. serranilla (blue spots at Serranilla Bank and Jamaica), E. sp. 1 (lime green spot at edge of Nicaragua continental shelf, and E. sp. 2 (magenta spot at Isla de Providencia). Basic map from R.F. Myers.

opennotspecifiedDec 2007View details →

FIGURE 2. Live individual and a in Two new species of Elacatinus (Teleostei: Gobiidae) from the Mexican coast of the Gulf of Mexico

FIGURE 2. Live individual and a small school of Elacatinus jarocho, Veracruz, Mexico. Photographs by Lad Akins.

opencc-by-4.0Jul 2024View details →

Sponge species identity and morphology shape occupancy patterns of a Caribbean sponge-dwelling goby (Elacatinus horsti)

<p>An R studio project that includes original transect survey data files used to examine the influence of sponge species and morphology on resident fish (goby) occupancy. Associated R code in Script folders 1-3 used to test for differences in goby-occupied sponge abundance across different sites, and test for the effects of different sponge characteristics on goby occupancy and group size. </p> <p> </p>

FIG. 10 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 10. Ontogeny of neuromast distribution in E. lori derived from fluorescent images. (A) 0 dph, 3 mm TL; (B) 10 dph, 4.5 mm SL; (C) 20 dph, 6.5 mm SL; (D) 31 dph, 9 mm SL; and (E) 38 dph, 9 mm SL presettlement larva. Pectoral fin removed to facilitate visualization of all neuromasts on the trunk. Yolk sac not drawn. Scale bar ¼ 1 mm. See Figures 3 and 4 for identity of neuromasts.

FIG. 2 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 2. Neuromast distributions in E. lori vitally stained with 4-di-2-ASP (lateral view, rostral to the left). (A) 0 dph (3 mm NL; yolk sac larva, fin folds still present) with only nine neuromasts present on head. By 1 dph, the yolk sac is fully absorbed and by 10 dph, flexion has started. (B) 38 dph (9.5 mm SL, pre-settlement) individual with all neuromast lines present on head; only the neuromasts in lines on operculum and mandible have begun to proliferate. Canal neuromasts are still visible (e.g., dorsal to orbit), indicating that the canals are not yet fully ossified. Settlement occurs at ~30–45 dph, 9–11 mm SL. (C) Wild-caught adult (42 mm SL) with lines of proliferated superficial neuromasts on head. (D) Trunk and tail of 20 dph (6 mm SL) larva. The few neuromasts on trunk will proliferate to become short vertical series of superficial neuromasts (see F). A few neuromasts on the caudal fin occur in three lines. (E) Anterior portion of the trunk (adult, 42 mm SL) illustrating several short lines of neuromasts. (F) Posterior portion of the trunk (adult, 42 mm SL) with well-organized vertical lines of neuromasts (''stitches'') on each myomere along horizontal septum. (G) Caudal fin (adult, 42 mm SL) with three lines (lines lc, lc1, and lc2) of densely placed neuromasts extending from the fin base to the tip of the caudal fin on the membranes between fin rays. Caudal-fin membranes are so thin that the neuromasts from both the left (white arrowhead) and right (yellow arrowhead) side are visible within a line. See Figures 3 and 4 for identification of neuromast lines.

FIG. 6 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 6. Neuromast and cupular morphology in E. lori. (A) Neuromast showing hair cells in central sensory strip with opposing polarities (hair cell orientation; double-headed arrow). (B) Detail of neuromast, as in A, showing ciliary bundles of individual hair cells (each with kinocilium [kc] and multiple stereocilia [sc]) with opposing polarities. (C) Gelatinous cupula (cu) retained on a neuromast that has the same orientation as neuromast in A; note the ''wing-like'' extensions of the cupula that reaches to the tips (arrows) of the elongate neuromast. (D) Neuromast that appears to be in the process of budding, which is thought to be the mechanism for neuromast proliferation. Double-headed arrows ¼ hair cell orientation.

FIG. 5 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 5. Lateral line development in E. lori. (A–E) Supraorbital (SO) canal with canal neuromasts (CNs) between orbits and superficial neuromasts in larvae. (A) CN (arrow) prior to canal enclosure (Stage I) at 0 dph. (B) CN (arrow) in depression as canal formation starts (Stage IIa) at 10 dph (5 mm SL). Nuclei of cells in two layers are visible in the neuromast (upper layer, sensory hair cells; lower layer, non-sensory support cells). (C) Left and right CNs (arrows) in the SO canal in the dorsal midline, with canal walls rising (*, Stage IIb), but not yet enclosing the CNs. (D) Left and right CNs (arrows, as in C; cupula of left neuromast is visible) are enclosed in the ossified SO canal (Stage IV; wild-caught settler, 14 mm SL). (E) Example of a line of densely placed superficial neuromasts (line c2) in wild-caught settler (14 mm SL) in the nasal area; prominent olfactory epithelium (oe). Stages of canal development (I–IV) follow Webb and Shirey (2003). (F–J) Ontogeny of superficial neuromast size and shape in E. lori showing diamond shape and gradual restriction of hair cells to a central, oval sensory strip. Axis of best physiological sensitivity (hair cell orientation) is perpendicular to the long axis of the neuromast. (F) 0 dph—neuromast on trunk is already diamond-shaped, (G) 10 dph—neuromast on trunk, (H) 20 dph—neuromast on cheek, (I) 34 dph—neuromast on cheek, note that sensory strip takes up a smaller portion of area of the neuromast compared to those in F–H. (J) Adult—superficial neuromast on caudal fin. Scale bars: A–E, 50 lm; F–H, 2 lm; I–J, 5 lm.

FIG. 9 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 9. Comparison of neuromast size in post-settlement juveniles and adult E. lori. Least squared means of (A) neuromast length and (B) neuromast width and standard error are plotted for each neuromast type (canal neuromasts [CN], canal neuromast homologs [CNH], superficial neuromasts [SN])—Head CN (n ¼ 13), Head CNH (n ¼ 45), Head SN (n ¼ 102), Trunk SN (n ¼ 65), and Tail SN (n ¼ 8)—based on linear measurements of scanning electron micrographs. Statistically significant differences are indicated by brackets (post hoc Tukey's HSD, P, 0.05).

FIG. 1 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 1. Examples of the distribution of lateral line canal pores (open circles) and superficial neuromasts (filled circles) in longitudinal and transverse patterns in gobies. (A) Thorogobius macrolepis has a longitudinal pattern with lines ventral to the eye (lines a, b, c, and d) that extend rostro-caudally (re-drawn from Sanzo, 1911). (B) Elacatinus oceanops has a transverse pattern with lines ventral to the eye that radiate from the edge of the orbit, the site of the ancestral infraorbital canal (the only published data for Elacatinus spp.; re-drawn from Miller, 1972). (C) Tigrigobius limbaughi (¼Elacatinus limbaughi), with a transverse pattern (re-drawn from Hoese and Reader, 2001). (D) Tigrigobius macrodon, with a transverse pattern (re-drawn from Miller, 1972).

FIG. 4 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 4. Distribution of superficial neuromasts (black circles) in body and caudal series in an E. lori post-settlement juvenile (''settler''; 38 dph, 9.5 mm SL) based on fluorescent images (see also Fig. 2D–G). Superficial neuromast series (defined by Sanzo, 1911) are color-coded: blue ¼ oculoscapular, purple ¼ anterior dorsal, pink ¼ body, and brown ¼ caudal. Names for superficial neuromast lines within series follow Sanzo (1911) and Wongrat and Miller (1991). The large pectoral fin is not drawn in order to visualize all neuromasts on the trunk. See text for additional details.

FIG. 12 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 12. Neuromast morphology in species of Tigrigobius (lateral views; rostral to left). (A) T. multifasciatus (AMNH 23621)—radiating superficial lines on the cheek (3, 4, 5, b, d; see Fig. 3B). (B) Lines 5 and b (see box in A), which have a tip-to-tip arrangement. (C) T. gemmatus (AMNH 26076)— preopercular canal (PO) pores (e, c) and opercular series (lines ot, os, oi, forming the ''F'' on the operculum). (D) T. gemmatus (AMNH 26076)— superficial neuromast line on trunk just caudal to tip of pectoral fin when against body. (E) T. dilepis (AMNH 250269)—diamond-shaped superficial neuromasts in line os (ventral horizontal line in ''F'' on operculum) with ''tip-to-tip'' arrangement and hair cell orientation (double-headed arrows) perpendicular to line. (F) T. gemmatus (AMNH 26076)—first two diamond-shaped superficial neuromasts in line b (see box in B) with ''tip-to-tip'' arrangement and hair cell orientation (double-headed arrows) perpendicular to line. Scale bars: A, C, 200 lm; B, D, 100 lm; E–F, 20 lm.

FIG. 8 in Organization and Ontogeny of a Complex Lateral Line System in a Goby (Elacatinus lori), with a Consideration of Function and Ecology

FIG. 8. Neuromast arrangements within lines in E. lori and other goby species examined. (A) Canal neuromasts, aligned ''side-by-side'' with axis of best physiological sensitivity parallel to the length of the canal and line of neuromasts (black lines represent canal walls). (B) Canal neuromast homologs or caudal fin superficial neuromasts, arranged ''side-by-side'' with axis of best physiological sensitivity parallel to line of neuromasts. On the caudal fin, each neuromast line is located on the membrane between adjacent fin rays. Dashed lines represent location of canal walls (in an ancestral canal) on the head or the fin rays on the tail. (C) Superficial neuromasts aligned ''tip-to-tip'' with axis of best physiological sensitivity perpendicular to line. Gray area ¼ sensory strip. Double-headed arrow ¼ axis of best physiological sensitivity (hair cell orientation).