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166 results for “Sacoglossa”
FIGURE 18 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 18. Elysia papillosa, external morphology and egg mass. Live specimens were photographed upon field collection from Bocas del Toro, Panama (C–E, G–H) or Discovery Bay, Jamaica (F). A, Illustration accompanying original description (Verrill 1901: fig. 2), showing lateral undulations of the parapodial margin but no branching papillae; specimen is shown resting on stipe of H. incrassata. B, Illustration accompanying re-description of E. papillosa (Ev. Marcus & Er. Marcus 1967: figs. 22 and 23). C, Side view of isolate Epap_04Pan01 (8 mm length) showing brown parapodial margin with crown-like lateral undulations. D, Side view of isolate Epap_04Pan04 (5 mm). E, Top view of isolate Epap_04Pan08 (6 mm), showing elongated tail. F, Side view of juvenile LACM 178620 (3 mm). G–H, Dorsal surface of relaxed isolates Epap_04Pan07 (G) and Epap_04Pan01 (H), showing renopericardial complex, vessel network and greyish-white gametic vesicles. I (bottom right panel), Egg mass from Curaçao specimen showing irregular ribbon of white ECY twisting around uncleaved ova; field of view = 1.75 mm.
FIGURE 16 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 16. Elysia chlorotica, drawing of the pericardium and dorsal vessel network traced from a photograph of a live animal from Martha's Vineyard, MA.
FIGURE 14 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 14. External morphology of specimens of Elysia crispata from which the COI haplotypes analyzed in Fig. 13 were obtained, showing parapodial ruffling and coloration (left panel), foot (center), and close-up view of the anterior parapodial margin (right) from each live specimen. A, Green clarki morph from Lake Surprise, FL (isolate Ecri_09LKS05; 60 mm). B, Dark clarki morph from Mote Tropical Research Laboratory, Florida Keys (Ecri_07Mot03; 20 mm). C, Intermediate clarki morph from Geiger Beach, Key West, FL (Ecri_07Gei08; 8 mm). D, Typical high-flow crispata morph from Dry Tortugas, FL (Ecri_10Dry11; 12 mm). Isolate Ecri_10Dry08 had external features nearly identical to this specimen. E, High-flow morph from Dry Tortugas, FL (Ecri_10Dry07; 13 mm). F–G, Intermediate morphs with mixed features from Sweeting's Cay, Bahamas (F, Ecri_07Swe10, 25 mm; G, Ecri_07Swe07, 25 mm). H–I, Intermediate morphs with mixed features from the Northern Exumas, Bahamas (H, Ecri_10NEx01, 15 mm; I, Ecri_10NEx02, 18 mm). J, Intermediate morph from San Salvador Island, Bahamas (Ecri_07SSal01, 15 mm). K–L, Typical crispata morphs from Curaçao (K, Ecri_ 09Cur01, 52 mm) and New Providence, Bahamas (L, Ecri_10NPr02, 30 mm). M, Green clarki morph from Little San Salvador, Bahamas (Ecri_07LSS02, 32 mm). N, Intermediate morph from Little San Salvador, Bahamas (Ecri_07LSS04, 25 mm). O, Dark clarki morph from Little San Salvador, Bahamas (Ecri_07LSS08, 28 mm).
FIGURE 11 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 11. Elysia crispata, SEM of the radulae of several specimens. A, Complete radula (LACM 178593). B, Leading tooth (LACM 178593). C, Close-up of leading tooth showing fine denticles (LACM 178593). D, Leading tooth (LACM 178636). E, Leading tooth (LACM 178594). F, Leading tooth (LACM 178637). G, Leading tooth (LACM 178591).
FIGURE 9 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 9. Elysia crispata, external anatomy and egg mass. A, Dorsal view of specimen from Florida Keys (LACM 178590; 14 mm). B, Dorsal view of specimen from boat channel at the Mote Tropical Research Laboratory, Florida Keys (LACM 178635; 23 mm). C, Dorsal view of specimen from Dry Tortugas (LACM 178593; 18 mm). D, Dorsal view of a 'clarki' morph specimen from Lake Surprise, Florida (LACM 178595; 52 mm). E, Dorsal view of specimen from Bocas del Toro, Panama (35 mm). F–G, Variability in parapodial notch in two specimens from Yucatan, Mexico. I–L, Variability in foot sole pigmentation for specimens from the Florida Keys (LACM 178590) (I), (LACM 178635) (J), Dry Tortugas (LACM 178593) (K), and 'clarki' morph from Lake Surprise, Florida (LACM 178595) (L). M, Egg mass of a specimen from Sweetings Cay, Bahamas. Field of view = 11.7 mm. N, Close-up of larvae from a clutch laid by a specimen from Lake Surprise, Florida; shelled larvae have lost their velar lobes and are metamorphosing on the egg mass at the time of hatching. Field of view = 1.8 mm.
FIGURE 10 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 10. Elysia crispata, drawing of the pericardium and dorsal vessels of a preserved specimen (LACM 178589; 4.5 cm long × 3.3 cm wide).
FIGURE 8 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 8. Elysia ornata, SEM of the radula (LACM 178581). A, Complete radula. B, Leading tooth. C, Ascus.
FIGURE 6 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 6. Penial morphology of some species examined. A, Elysia ornata (LACM 178583). B–E, Elysia crispata (LACM 178640) (B); (LACM 178641) (C); (LACM 2004.5.1) (D); (isolate Ecri_10LKS03) (E). F, Elysia chlorotica (LACM 178597). G–H, Elysia patina (LACM 178650) (G); (LACM 178651) (H). I, Elysia flava (LACM 178626). J, Elysia subornata (LACM 178629). K, Elysia canguzua (LACM 178644). L, Elysia serca (CPIC 00027). M, Elysia evelinae (MZUCR INB0003312779). N, Elysia velutinus (LACM 178642), O, Elysia papillosa (LACM 178607). P, Elysia cornigera (LACM 173227). Q, Elysia marcusi (LACM 178647), R, Elysia pratensis (CPIC 00068). S, Elysia zuleicae (LACM 178656). Abbreviations: bw, body wall; dd, deferent duct; pe, penis; s, stylet.
FIGURE 29 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 29. Original drawing of "Elysia crispa" by Verrill (1900) from Bermuda showing the characteristic white patch behind the rhinophores, and white patches with smaller white dots across the parapodia, characteristic of E. velutinus.
FIGURE 4 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 4. Phylogenetic hypothesis for family Plakobranchidae rooted on genus Bosellia (not shown) to illustrate relationships within the genera Elysia, Plakobranchus and Thuridilla. Topology and branch lengths are from Maximum Likelihood analysis of concatenated DNA sequences (2,807 bp total) representing portions of two mitochondrial (COI, 16S) and two nuclear (H3, 28S) genes. Significant support values are given as ML bootstrap percentages (below branch), or BI posterior probabilities (above branch); asterisk = 1.0 or 100% support. Species discussed in this study are bolded. Triangle denotes presence of a penial stylet.
FIGURE 3 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 3. Mismatch distributions based on TrN-corrected pairwise distances at the COI locus for three subclades of Elysia. Based on ABGD analysis, genetic distances were classified as intra-specific (white bars) or inter-specific (black bars). Dashed horizontal line indicates the a priori threshold distance used provisionally to delimit candidate species.
FIGURE 5 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 5. Elysia ornata, external anatomy and egg mass. A, Lateral view of a live animal, specimen from Jamaica (20 mm long). B, Dorsal view of same specimen. C, Egg mass of figured specimen from Jamaica (15 mm across). D, Detail of the eggs and ECY from a specimen from Curaçao, showing 1–3 uncleaved ova per capsule, and ECY inclusions imbedded in the upper face of the egg mass. Field = 1.48 mm across.
FIGURE 7 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 7. Elysia ornata, drawing of the renopericardium and dorsal vessel network of a preserved specimen (LACM 178580; 15 mm long × 11 mm wide).
FIGURE 2 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 2. Diagram showing generic morphology of (a) a complete radula, and (b) a leading tooth, labeling features described or measured in the present study of Elysia.
FIGURE 1 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 1. Primary sampling locations for specimens used in morphological and molecular analyses. Sites in the Bahamas included (1) Sweeting's Cay; (2) Great Stirrup Cay; (3) the lagoon in Little San Salvador island; (4) San Salvador island; (5) Plana Cays; (6) Compass Cay; (7) Northern Exumas; (8) New Providence; (9) Bimini; (10) Abaco; (11) Lee Stocking island. Major collecting sites in Florida sites were Lake Surprise, Key Largo (12); Geiger Beach, near Key West (13); and the Dry Tortugas (14). Other sites were Bermuda (15); Jamaica (16); the U.S. Virgin Islands (17); Antigua (18); Dominica (19); St. Lucia (20); Bonaire (21); Curacao (22); Bocas del Toro, Panama (23); and Belize (24). For each site, Table S1 gives the latitude and longitude; corresponding sample identifier abbreviation; sampling dates and collector(s); and more detailed information on collecting localities, as warranted.
FIGURE 33 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 33. Elysia serca, external morphology of specimen from Geiger Beach, Florida Keys (4 mm long). A, Dorsal view of live specimen, showing pointed rhinophores and reduced parapodia. B, Dorsal view showing white, rounded pericardium and vessels. C, Ventral view of foot.
FIGURE 24 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 24. Elysia subornata, external morphology and egg masses. Live specimens photographed upon collection from the Bahamas (A), or near the type locality in Bermuda (B–F). A, Specimen from Sweetings Cay (length = 11 mm) resting on a stipe of Caulerpa racemosa, on which the specimen was collected. B–C, Dorsal view of specimens from Bermuda collected on C. racemosa, showing dark marginal line; length = 2.7 mm (B), 3 mm (C). D, Dorsal view of highly papillose specimen from Bermuda collected on C. cupressoides; length = 6 mm. E–F Side view (E) and dorsal surface (F) of specimen from Bermuda (length = 4.5 mm) showing elongate renopericardial complex and dorsal vessel network lining inner parapodial margin. G, Egg mass from Bahamas specimen showing thick ribbon of orange ECY embedded around egg capsules containing uncleaved ova; field of view = 1.73 mm. H, Subsequent development of egg mass from (G), showing newly metamorphosed juveniles and cast-off larval shells inside egg mass.
FIGURE 22 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 22. Elysia flava, dorsal vessels drawn of a preserved specimen from Venezuala (LACM 178625; 5.5 mm long × 5 mm wide).
FIGURE 28 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 28. Elysia velutinus, SEM of the radula and penis. A, Leading tooth (CPIC 00148). B, Radula (CPIC 00148). C, Penis, (LACM 178634).
FIGURE 40 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 40. Elysia marcusi, SEM of the radula and penis (LACM 178648). A, Partly disarticulated but complete radula. B, Tooth showing denticles. C, Penial stylet.
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