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Fig. 7 in Morphological requirements in limulid and decapod gills: A case study in deducing the function of lamellipedian exopod lamellae

Fig. 7. Allometric relationships between respiratory surface and dry−body weight in Limulus polyphemus (dots and solid regression line) in bi−logarithmic coefficients. Abbreviations are: correlation coefficients (r); drybody weight (W); total area for respiratory surface (A); allometric scaling exponent (α). For comparisons, the results on the gills of decapod crustaceans Callinectes sapidus and Libinia dubia are shown in dashed lines, the data are referred to Hughes (1983).

Fig. 6 in Morphological requirements in limulid and decapod gills: A case study in deducing the function of lamellipedian exopod lamellae

Fig. 6. Phyllobranchiate gill of a decapod crustacean Atergatris sp. Top one−fourth is shown. SEM photo.

Fig. 5 in Morphological requirements in limulid and decapod gills: A case study in deducing the function of lamellipedian exopod lamellae

Fig. 5. The area of every gill lamella of selected first branchial appendages. A. Instar stage 4 of dry−body weight 0.01 g. B. Instar stage 10 of dry−body weight 0.43 g. C. Instar stage 14 of dry−body weight 6.7 g. D. Instar stage 18 of dry body weight 177.09 g. Grey shaded area corresponds to possible newly established lamellae in each instar stage. Darker shade ranges to minimum established number, while lighter maximum. Total respiratory area (T), respiratory area for newly established lamellae of minimum (Nmin) and maximum value (Nmax) are also noted. These ratios relative to the total area are shown in parentheses. The lamellae left to dashed lines lack an osmoregulatory area.

Fig. 4 in Morphological requirements in limulid and decapod gills: A case study in deducing the function of lamellipedian exopod lamellae

Fig. 4. Growth−related change in gill morphology of Limulus polyphemus shown in instar−stage series. A. Mean total respiratory (white bars) and osmoregulatory area for each instar stage (grey bars) and their increment rates (black and grey line graph denotes respiratory and osmoregulatory area, respectively). B. Average total lamellar number for each instar stage (bar graph) and its increment rates (line graph). C. Average area per single lamellae for each instar stage (bar graph) and its increment rates (line graph). The bar graphs should refer to left indexes shown in exponential form (A and C) or in actual numbers (B), and the line graphs right indexes. Error bars denote the maximum and the minimum lamellar numbers. Numbers shown above the columns represent the numbers of examined specimens.

Fig. 10 in Morphological requirements in limulid and decapod gills: A case study in deducing the function of lamellipedian exopod lamellae

Fig. 10. Lamellipedian exopod of the trilobite Olenoides serratus. A. Camera lucida drawing; traced from Whittington (1980: text−fig. 6). B. Estimated area of each exite shown in A.

Fig. 3 in Morphological requirements in limulid and decapod gills: A case study in deducing the function of lamellipedian exopod lamellae

Fig. 3. Posterior view of first instar stage of Limulus polyphemus Linnaeus, 1758. Only five gill lamellae (gl) are visible between the operculate division of first (ba1) and second branchial appendage (ba2). Other abbreviations: op, operculum; pr, prosoma. SEM photo.

Fig. 2 in Morphological requirements in limulid and decapod gills: A case study in deducing the function of lamellipedian exopod lamellae

Fig. 2. Book gill of Limulus polyphemus Linnaeus, 1758. A. Dorsal view of left first branchial appendage of instar stage 14. Endopod and exopod of the operculate division of branchial appendage as well as lamellae of book gill are shown. SEM photo. B. Dorsal view of left first branchial appendage of instar stage 4. SEM photo. C. Transparent microscopic photo of a gill lamella dyed with toluidine blue, showing osmoregulatory and respiratory area.

opencc-by-4.0Feb 2018View details →

Fig. 5 - Amazighopsis cretacica n. gen., n in Amazighopsidae, a new family of decapod macruran astacideans from the late Cretaceous (Cenomanian-Turonian) of Gara Sbaa, Southeastern Morocco

Fig. 5 - Amazighopsis cretacica n. gen., n. sp., MSNM i27546. A) Close-up of the carapace with the simple system grooves [cervical, (ee 1) and antennal (b) grooves] and short rostrum with serrate suprarostral margin (x 1.36). B) Close-up of P1 chela with the occlusal margins of dactylus and index (x 1.78).

opencc-zeroJan 2024View details →

Linked collectors and determiners for: DecASO: Decapod Crustaceans of the Southwestern Atlantic Ocean.

Natural history specimen data linked to collectors and determiners held within, "DecASO: Decapod Crustaceans of the Southwestern Atlantic Ocean". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/2276fa28-814c-4d9d-b620-7b13d5ea99eb">https://bionomia.net/dataset/2276fa28-814c-4d9d-b620-7b13d5ea99eb</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/2276fa28-814c-4d9d-b620-7b13d5ea99eb">https://gbif.org/dataset/2276fa28-814c-4d9d-b620-7b13d5ea99eb</a>. Formatted as a Frictionless Data package.

opencc-by-4.0Oct 2004View details →

Figure 3 in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 3. Ultrastructure of the projections on the mouthparts. A, cross-section of the basal part of type I projection, which is circular in cross-sectional shape. The lumen is filled with semicircular sheath cells. Arrow indicates bundle of sensory cilia. B, close-up of semicircular sheath cells (arrow) in the basal part of a type I projection encircling the sensory cilia. C, cross-section of the basal part of a type II projection. Arrow indicates semicircular sheath cells. D, oblique section of a type IV projection, note no lumen or sheath cells. Arrowhead indicates articulation. E, cross-section of the basal part of a type IV projection showing flattened shape and no lumen. F, oblique and cross-section of setules from a pappose seta. Arrowheads indicate cross-sections, arrow indicates the articulation with the cuticle of the setal shaft. G, cross-section of setules and denticles from the distal part of a serrate seta. Arrow indicates lumen of seta. Abbreviations: D, denticle; Ge Cu, general cuticle; S, setule; Se Cu, cuticle of seta; SC, sensory cilium.

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Figure 1 in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 1. Mouth apparatus of Cherax quadricarinatus. A, line drawing of the head region giving a medial view of the left side of the mouth apparatus. Striated area indicates sectioned tissue. Position of mouthparts resembles the live animal when not eating. B, labrum seen ventrally. Ch. quadricarinatus is the only species with setae on the labrum. C, left mandible seen dorso-laterally. All species have a heavy setation on the mandibular palp with the major part on the distalmost segment. D, left maxilla 1 seen dorsally. Most setae are found on the medial rim. E, left maxilla 2 seen dorsally. The scaphognathite has a setal rim but most of the other setae are found on the medial edge of the basis and coxa. (F) left maxilliped 1 seen dorsally. Most setae are found on the exopod and the medial rim of the basis and coxa. (G) left maxilliped 2 seen dorsally. Most setae are on the medial side of the endopod and on the exopod. (H) left maxilliped 3 seen dorsollay. The medial side of the endopod has heavy setation. Abbreviations Bas, basis; Cox, coxa; Endo, endopod; Epi, epipod; Exo, exopod; IP, incisor process; Lb, labrum; Mdp, mandibular palp; MP, molar process; Mx1, maxilla 1; Mx2, maxilla 2; Mxp1, maxilliped 1; Mxp2, maxilliped 2; Mxp3, maxilliped 3; Scapho, scaphognathite.

opencc-by-4.0May 2006View details →

Figure 3 in Progressive troglomorphism of ambulatory and sensory appendages in three Mexican cave decapods

Figure 3. (A–F) Electron micrographs of segments from antennae (left column) and antennules external branch (right column), respectively, of Procambarus olmecorum (A, B), P. cavernicola (C, D), and P. oaxacae reddelli (E, F); (G–J) electron micrographs of segments of antennae (left column) and tip of antennules (right column), respectively, of M. totonacum (G, H) and M. villalobosi (I, J).

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Figure 2 in Progressive troglomorphism of ambulatory and sensory appendages in three Mexican cave decapods

Figure 2. Electron micrographs of carapace surface, magnification of surface, and dactyl of third maxilliped, respectively, of Procambarus olmecorum (A–C), P. oaxacae reddelli (D–F), and P. cavernicola (G–I).

FIG. 17 in Revision of Mesozoic decapod crustaceans from Madagascar

FIG. 17. — Hoploparia pusilla Secrétan, 1964 from the Lower Campanian of Belo-sur-Thsiribihina, Menabe region, central Morondava Basin: A, holotype (MNHN.F.R03904, Coupe de Berere, gisement 166), cephalothorax in left lateral view, note finely tuberculate orna- ment; B-D, paratype (MNHN.F.R03905, Coupe de Berere, gisement 166), incomplete specimen in right lateral, dorsal and left lateral views, respectively, showing articulated cephalothorax and abdomen, note left propodus of P1 with carinate outer margin; E, line drawing by F. Fogliazza, left lateral view. Abbreviations: b, antennal groove; b1, hepatic groove; c, postcervical groove; e1e, cervical groove. Scale bars: 1 cm. Photographs by C. Lemzaouda (MNHN).

FIG. 14 in Revision of Mesozoic decapod crustaceans from Madagascar

FIG. 14. — Hoploparia collignoni (Van Straelen, 1949) from the Albian of the Sitampiky region, eastern Mahavavy River, southern Mahajanga Basin: A, B, abdomen (MNHN.F.R03940, Malandiandro, gisement 46), in dorsal and right lateral views, respectively, note smooth somites; C, incomplete telson (MNHN.F.A33152, detail of Fig. 13C, D), note completely smooth dorsal surface; D, fragments of uropods (MNHN.F.R03943, Malandiandro, gisement 46), lateral view, exopod with distal diaresis bearing small spines on the upper margin; E, G, abdomen (MNHN.F.R03948, syntype of Hoploparia sculpta, Befamonto, gisement 42), dorsal (E), right lateral (F) and detailed (G) views, note ornament of somites: s1 completely smooth, s2-5 with two pairs of dorsal aligned tubercles, s6 with dorsal surface uniformly tuberculate (E); pleurae 2 and 3 with two proximal tubercles; pleurae 4 and 5 with a single proximal tubercle; pleurae 6 with one median tubercle (F); telson with two median tubercles (G); H, abdomen (MNHN.F.R03950, syntype of H. sculpta, Befamonto, gisement 42), dorsal view, detail of somites. Scale bars: A, B, E, F, H, 2 cm; C, D, G, 1 cm. Photographs by C. Lemzaouda (MNHN).

FIG. 10 in Revision of Mesozoic decapod crustaceans from Madagascar

FIG. 10. — Eryma granuliferum Secrétan, 1964 from the lower to middle Kimmeridgian of Antsalova, south of the Maintirano region, northern Morondava Basin: A, holotype (MNHN.F.R03975, eastern Antsalova, gisement 236), complete cephalothorax in left lateral view; B, C, incomplete specimen (MNHN.F.R03974, holotype of Eryma madagascariensis, gisement 233, Antsalova, east of Mount Ambohidroa), right lateral view (B) and detail of cephalothorax (C); D, line drawings by F. Fogliazza in left lateral view. Abbreviations: a, branchiocardiac groove; b, antennal groove; b1, hepatic groove; c, postcervical groove; e1e, cervical groove; i, inferior groove. Scale bars: 2 cm. Photographs by C. Lemzaouda (MNHN).

FIG. 9 in Revision of Mesozoic decapod crustaceans from Madagascar

FIG. 9. —?Enoploclytia armata Secrétan, 1964 from the Lower Campanian of Belo-sur-Thsiribihina, Menabe region, central Morondava Basin: A-C, holotype (MNHN.F.R03913, Coupe de Ampolypoly-Antsirasira-Behamotra, gisement 287), very large, massive and compressed propodus, with inner (A) and outer (C) surfaces strongly tuberculate, dorsal margin finely tuberculate, ventral margin strongly tuberculate with two rows of more or less aligned strong tubercles (B). Scale bar: 2 cm. Photographs by C. Lemzaouda (MNHN).

FIG. 8 in Revision of Mesozoic decapod crustaceans from Madagascar

FIG. 8. — Enoploclytia collignoni Secrétan, 1964 from the lower Campanian of Belo-sur-Tsiribihina,Menabe region, central Morondava Basin: A, near-complete specimen in ventral view (MNHN.F.A33132, Coupe de Bevaho, gisement 261) showing P1 with elongate chelae (note homochely), merus with strong spines on the ventral margin and a fragment of the cephalothorax; B, C, line drawings by F. Fogliazza, in dorsal and right lateral views,respectively. Abbreviations:a, branchiocardiac groove;b, antennal groove;b1, hepatic groove; c, postcervical groove; e1e, cervical groove; fa, fusiform area; i, inferior groove; rs, rostral spine.Scale bar: 2 cm. Photographs by C. Lemzaouda (MNHN).

FIG. 7 in Revision of Mesozoic decapod crustaceans from Madagascar

FIG. 7. — Enoploclytia collignoni Secrétan, 1964 from the lower Campanian of Belo-sur-Tsiribihina, Menabe region, central Morondava Basin: A, B, holotype (MNHN.F.R03925, Coupe de Bevaho, gisement 256), isolated cephalothorax in dorsal and right lateral views, respectively; C, fragmentary chela of P1 (MNHN.F.R03924, Coupe de Bevaho, gisement 261), lateral view, note the straight occlusal margins of dactylus and index, with a single row of strong teeth; D, E, globose propodus (MNHN.F.R03914, Coupe de Berere III, gisement 192) covered by uniform pits and small tubercles on the outer surface (D) and by uniform pits with sparse, strong and aligned tubercles on the inner (E), note the articulation to the carpus; F, G, complete chela of P1 (MNHN.F.R03923, Coupe de Bevaho, gisement 261) with globose propodus retaining index (F, outer surface) and dactylus (G, inner surface) very narrow, elongate and curved distally. Scale bars: 2 cm. Photographs by C. Lemzaouda (MNHN).

FIG. 5 in Revision of Mesozoic decapod crustaceans from Madagascar

FIG. 5. — Detail of the Central Morondava Basin with fossil-bearing outcrops. Type localities: 1, Ctenocheles madagascariensis; 2, C. madagascariensis and Caloxanthus simplex; 3, C. madagascariensis and Enoploclytia collignoni; 4, C. madagascariensis, Hoploparia pusilla, Notopocorystes australis, Schlueteria menabensis and "Xanthosia" robertsi; 5, C. madagascariensis, Linuparus bererensis and Notopocorystes denisae. Full species names are indicated in Table 1.