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45 results for “Echiura”
Fig. 4 in Ikedosoma (Annelida: Echiura: Thalassematidae) from the Tropical Pacific, with Description of a New Species
Fig. 4. Ikedosoma sp. collected from Dam Bay, Nha Trang, Vietnam (CBM-ZW 1100). A, dorsal view of dissected trunk showing musculature (with aid of light box); B, magnified trunk wall showing two longitudinal muscle bands (marked by asterisks) and a continuous oblique muscle layer between them. Scales: A, 1 cm; B, 1 mm.
Fig. 3 in Ikedosoma (Annelida: Echiura: Thalassematidae) from the Tropical Pacific, with Description of a New Species
Fig. 3. Internal morphology of Ikedosoma abemama sp. nov. (holotype, NSMT-Ec 187), dorsal view. Most mesenteries and gonostomal lips, and appearance of trunk musculature omitted for clarity. A, anterior end of trunk; B, posterior end of trunk. Abbreviations: an, anus; av, anal vesicle; cg, ciliated groove; cr, crop; dv, dorsal vessel; e, esophagus; gd, gonoduct; gl, gonostomal lip; gz, gizzard; i, intestine; m, mesentery; nv, neurointestinal vessel; ph, pharynx; pp, papilla; r, rectum; rv, ring vessel; vnc, ventral nerve cord; vss, ventral setal sac; vv, ventral vessel. Scales: 1 cm.
Fig. 2 in Ikedosoma (Annelida: Echiura: Thalassematidae) from the Tropical Pacific, with Description of a New Species
Fig. 2. Comparison of morphology around the basal proboscis among three species of Ikedosoma (ventral view). Arrowheads indicate mouth position to show lower lip absence (B) or presence (C, D). A, B, Ikedosoma abemama sp. nov., preserved specimen (holotype, NSMT- Ec 187); C, I. elegans, live specimen (non-type, NSMT-Ec 113); D, I. gogoshimense, live specimen (non-type, NSMT-Ec 116). Scales: A, C, D, 1 cm; B, 2 mm.
Fig. 1 in Ikedosoma (Annelida: Echiura: Thalassematidae) from the Tropical Pacific, with Description of a New Species
Fig. 1. Ikedosoma abemama sp. nov. (holotype, NSMT-Ec 187). A, lateral view of the entire body, before dissection; B, dorsal view of the dissected trunk showing musculature (with aid of light box); C, magnified trunk wall showing two longitudinal muscle bands (marked by asterisks) and the continuous oblique muscle layer between them. Scales: A, B, 1 cm; C, 1 mm.
Fig. 4 in Ephemeral Occurrence of the Echiuran Listriolobus brevirostris (Annelida: Echiura) in Osaka Bay between 1995 and 2002; a New Record for Japan, Probably Resulting from Human-mediated Introduction
Fig. 4. Relationship between trunk length and proboscis length in 52 fixed specimens of Listriolobus brevirostris, collected from Osaka Bay in 1999 (NSMT-Ec 164 to 183).
Fig. 3 in Ephemeral Occurrence of the Echiuran Listriolobus brevirostris (Annelida: Echiura) in Osaka Bay between 1995 and 2002; a New Record for Japan, Probably Resulting from Human-mediated Introduction
Fig. 3. Internal morphology (dorsal view) of Listriolobus brevirostris from Osaka Bay, collected off Kobe on 26 November 2001 (NSMT-Ec 186). A, anterior end of trunk; B, posterior end of trunk (ventral vessel undetectable due to deterioration). Abbreviations: al, alimentary canal; av, anal vesicle; dv, dorsal vessel; gd, gonoduct; gl, gonostomal lip; im, interbasal muscle; nv, neurointestinal vessel; rc, rectal caecum; re, rectum; rv, ring vessel; tb, terminal bulb; vn, ventral nerve cord: vs, ventral seta; vv, ventral vessel. Scale bars: 1 mm.
Fig. 5 in Ephemeral Occurrence of the Echiuran Listriolobus brevirostris (Annelida: Echiura) in Osaka Bay between 1995 and 2002; a New Record for Japan, Probably Resulting from Human-mediated Introduction
Fig. 5. Seasonal changes in trunk length of Listriolobus brevirostris from Osaka Bay in 1999. Solid bars indicate mature specimen(s), dotted lines, measurements from live specimens, and double-headed arrow of dotted line, the length range in live specimens (see text).
Figure 5 in Checklist of the phyla Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Myxozoa, Tardigrada, Cephalorhyncha, Nemertea, Echiura, Brachiopoda, Phoronida, Chaetognatha, and Chordata (Tunicata, Cephalochordata,
Figure 5. The distribution of the number of Appendicularia (Tunicata) species along the coasts of Turkey. Each grid has a dimension of 15 × 15 km.
Figure 2 in Checklist of the phyla Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Myxozoa, Tardigrada, Cephalorhyncha, Nemertea, Echiura, Brachiopoda, Phoronida, Chaetognatha, and Chordata (Tunicata, Cephalochordata,
Figure 2. The number of species of the phyla Platyhelminthes (PLA), Chordata (Tunicata, Cephalochordata, and Hemichordata) (CHO), Nemertea (NEM), Nematoda (NMT), Xenacoelomorpha (XEN), Chaetognatha (CHA), Acanthocephala (ACA), and others (OTH, including Echiura, Myxozoa, Brachiopoda, Cephalorhyncha, Tardigrada, and Phoronida) along the coasts of Turkey. ∑S indicates the total number of species.
FIG. 1. — A-C in Report on some deep-sea echiurans (Echiura) of the North-East Atlantic
FIG. 1. — A-C, Torbenwolffia galatheae Zenkevitch, 1966; A, ventral view of anterior part of female; B, gonoduct; C, anal vesicle of one side; D, Alomasoma nordpacificum Zenkevitch, 1958, gonoducts; E-G, Sluiterina sibogae (Sluiter, 1902); E, ventral view of anterior part of female; F, anterior part of alimentary canal; G, anal vesicles. Abbreviations: av, anal vesicle; dv, dorsal vessel; gd, gonoduct;
FIG. 2. — A, B in Report on some deep-sea echiurans (Echiura) of the North-East Atlantic
FIG. 2. — A, B, Pseudoikedella achaeta (Zenkevitch, 1958); A, ventral view of anterior part of female; B, gonoduct; C-F, Achaetobonellia ricei n. sp.; C, ventral view of anterior part of female; D, gonoduct; E, internal morphology; F, anal vesicles. Abbreviations: av, anal vesicle; dv, dorsal vessel; gd, gonoduct; gp, gonopore; gs, gonostome; int, intestine; nc, nerve cord; niv, neurointestinal vessel; oes, oesophagus; ph, pharyx; pr, proboscis; re, rectum; vv, ventral vessel. Scale bars: A, C, E, 3 mm;
FIG. 3. — A-C in Report on some deep-sea echiurans (Echiura) of the North-East Atlantic
FIG. 3. — A-C, Eubonellia longistomum DattaGupta, 1981; A, ventral view of female; B, gonoduct; C, anterior end of trunk cavity showing the blood system; D, E, Charcotus clavatum DattaGupta, 1981; D, ventral view of anterior part of female; E, gonoduct. Abbreviations: dv, dorsal vessel; gd, gonoduct; gp, gonopore; gs, gonostome; nc, nerve cord; niv, neurointestinal vessel; pr, pro-
FIGURE 6. Alpheus christofferseni n in Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae) in Panama
FIGURE 6. Alpheus christofferseni n. sp., male from Bocas del Toro, Panama (USNM 1100667): a, second pereiopod, lateral view; b, third pereiopod, lateral view; c, fifth pereiopod, lateral view; d, same, propodus and dactylus, ventral view; e, appendix masculina and appendix interna of second pleopod. Scale bars: 1 mm.
FIGURE 5. Alpheus christofferseni n in Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae) in Panama
FIGURE 5. Alpheus christofferseni n. sp., male from Bocas del Toro, Panama (USNM 1100667): a, major cheliped, mesial view; b, same, distal merus, carpus and chela, lateral view; c, same, dactylus plunger, lateral view; d, minor cheliped, lateral view; e, same, distal merus, carpus and chela, mesial view. Scale bars: 1 mm.
FIGURE 2. Alpheus christofferseni n in Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae) in Panama
FIGURE 2. Alpheus christofferseni n. sp., female paratype from Atol das Rocas, Brazil (MNRJ 17926) (a–e) and male holotype (MNRJ 17905) (f): a, female major cheliped, mesial view; b, same, distal merus, carpus and chela, lateral view; c, same, coxa to carpus, lateral view; d, female minor cheliped, mesial view; e, same, distal merus, carpus and chela, lateral view; f, male minor cheliped, distal merus, carpus and chela, lateral view. Scale bars: 1 mm.
FIGURE 10 in Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae) in Panama
FIGURE 10. Alpheus aequus Kim & Abeke, 1988, female from Coibita, Coiba Marine National Park, Panama (MNHN 16389): a, frontal margin, dorsal view; b, major cheliped, lateral view; c, same, chela, mesial view; d, minor chela, lateral view; e, second pereiopod, lateral view; f, third pereiopod, lateral view. Scale bars: 1 mm.
FIGURE 4. Alpheus christofferseni n in Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae) in Panama
FIGURE 4. Alpheus christofferseni n. sp., male from Bocas del Toro, Panama (USNM 1100667): a, frontal region, dorsal view; b, same, lateral view; c, third maxilliped; d, right uropod, dorsal view; e, telson, dorsal view. Scale bar: 1 mm.
FIGURE 1. Alpheus christofferseni n in Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae) in Panama
FIGURE 1. Alpheus christofferseni n. sp., female paratypes from Atol das Rocas, Brazil (MNRJ 17926) (a–h) and male holotype (MNRJ 17905) (i): a, frontal region, dorsal view; b, same, lateral view; c, tooth on mesioventral carina of first antennular segment, lateral view; d, scaphocerite of antenna, dorsal view; e, third maxilliped, lateral view; f, telson and left uropod, dorsal view; g, distal margin of exopod of right uropod; h, orbital hoods and rostrum of another specimen, dorsal view; i, appendix masculina and appendix interna of male second pleopod. Scale bars: 1 mm.
FIGURE 3. Alpheus christofferseni n in Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae) in Panama
FIGURE 3. Alpheus christofferseni n. sp., female paratypes from Atol das Rocas, Brazil (MNRJ 17926): a, second pereiopod, lateral view; b, third pereiopod, lateral view; c, same, distal propodus and dactylus; d, fourth pereiopod, lateral view; e, same, distal propodus and dactylus; f, fifth pereiopod, lateral view; g, same, propodus and dactylus, ventral view; h, second pereiopod of another specimen, carpus and chela; i, third pereiopod of another specimen, distal carpus, propodus and dactylus, lateral view. Scale bars: 1 mm.
FIGURE 12 in Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae) in Panama
FIGURE 12. Habitats and hosts: a, shallow subtidal sandflat with patches of flotting algae and seagrass at Carenero Island, Bocas del Toro, Panama, type locality of Alpheus christofferseni n. sp.; b, c, Alpheus christofferseni n. sp. with host, Ochetostoma cf. edax (Fisher, 1946) (Echiura, Thalassematidae), a few hours after collection; d, partly exposed rock-mud intertidal at Coibita, Coiba Marine National Park, Panama, one of collection sites of Alpheus aequus Kim & Abele, 1988; e, Ochetostoma edax (Echiura, Thalassematidae), host of the Coibita specimen (MNHN-Na 16389).
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