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38 results for “Naticidae”
FIGURE 3 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 3: Photos of all egg masses used for molecular analysis (see Figure 1) in this study. For details concerning collection sites and the sequences amplified see Table 2. The pictures were taken immediately after the collars has been collected. DNA samples from egg masses were marked with C followed by a reference number when DNA was extracted directly from an egg mass; they were marked with L followed by a reference number if DNA extraction was performed from hatched larvae. Scale bars represent 0.5 cm.
FIGURE 2 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 2: Apertual views of all adult naticid specimens used for molecular analysis (see Figure 1) in this study. For more details concerning collection sites and the sequences amplified see Table 2. Scale bars represent 0.5 cm.
FIGURE 10 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 10: A, Payraudeautia intricata (Donovan, 1804); B, Neverita josephinia (Risso, 1826). Further details as in Figure 3. Scale bars represent 0.5 cm.
FIGURE 8 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 8: A, Tectonatica sagraiana (Orbigny, 1842); B, Tectonatica rizzae (Philippi, 1844). Further details as in Figure 3. Scale bars represent 0.5 cm.
FIGURE 9 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 9: A, Euspira nitida (Donovan, 1804); B, Euspira macilenta (Philippi, 1844). Further details as in Figure 3. Scale bars represent 0.5 cm.
FIGURE 4 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 4: Schematic map of Giglo Island, Grosseto County, Tuscany, Italy (42°21.000´´N 10°54.000´´E), including all collecting sites with naticid occurence: 1, Campese Bay; 2, Pt. del Faraglione; 3, Pt. delle Secche; 4, Cala dell´Allume; 5, Pt. del Corvo; 6, Pt. del Morto; 7, Pt. della Campana; 8, Cannelle Bay; 9,´Swiss House´; 10, Pt. del Fenaio. Pure shallow sandy sites are Campese Bay, Pt. del Faraglione, and Canelle Bay, while the remaining sites are bluffs with rocks, coarse sand flats, and sea weeds. The circular charts show the material (A, living specimens; E, egg masses; S, empty shells) collected at each site in a qualitative manner. N. dillwynii is distributed widest. Collected egg masses listed here were included in the molecular analysis.
FIGURE 6 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 6: A, Naticarius hebraeus (Martyn, 1786); B, Notocochlis dillwynii (Payraudeau, 1826). Further details as in Figure 3. Scale bars represent 0.5 cm.
FIGURE 1 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 1: Phylogenetic tree based on an analysis of the entire data set (H3, COI, 16S, and 18S sequences) of all specimens listed in Table 2. The phylogenetic model (GTR+I+G) was estimated by MrModeltest (Nylander 2004) performed with Paup*4.0b10 (Swofford 2003). Protein coding data sets were coded as "CODON". Based on different base compositions (chi-square test) in each of the single data sets, all parameters were defined as unlinked. Paup*4.0b10 tree characteristics: RI=0.851, CI=0.579. 325 positions were parsimony-informative, 76 were parsimony-uninformative, and 1141 were constant (1542 bp). Tonna cerevisina (Hedley, 1919) and Cypraea annulus (Linnaeus, 1758) were used as outgroup.
FIGURE 5 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses
FIGURE 5: A, Sparsely dotted form of Naticarius stercusmuscarum (Gmelin, 1791); B, Naticarius stercusmuscarum (Gmelin, 1791). All specimens are shown in four standardized views (dorsal, apertural, apical, umbilical) as well as alive. The pictures of living specimens were taken in an aquarium with a black bottom. Scale bars represent 0.5 cm.
Fig. 4 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 4 NeighborNet network based on the concatenated data set (COI, 16S, 18S, 28S, H3). Bootstrap values are indicated
Data from: Morphological conservatism of the Family Naticidae (Gastropoda) through time: potential causes and consequences
<p><span><span><span><span><span><span><span><span><span><span><span>Taxonomic status of several members of the Family Naticidae is extremely vague because of its simple shell morphology. Conventional taxonomic classification schemes suggest that most of the morphological characters tend to be homoplastic and exhibit convergence. Such morphological convergence complicates naticid taxonomy and makes it difficult to understand the evolutionary history of this group; several unrelated taxa are often misidentified as naticids, thereby exaggerating the actual diversity of this group. Here, we employ a standard landmark–based approach to understand the pattern of morphological evolution of this family. Ordination methods such as Principal Components Analysis and Canonical Variate Analysis were used to create morphospaces, and disparity was quantified using variance and range. Our results reveal, when naticids are compared with their sister taxon, Ampullinidae, the two families show significant differences in their average shapes, despite their superficial resemblances. Among naticids, although the mean shapes of the individual subfamilies are different, overall, the family Naticidae has displayed extreme morphological conservatism from the Jurassic to the Holocene. Interestingly, this conservatism has been unaffected by taxonomic changes <b>— </b>neither the extinction of the subfamily Gyrodinae nor the appearance of the subfamily Sininae affected this morphological conservatism. Naticids have always shown strong ecological preference towards an infaunal mode of life, and strict behavioural selectivity in handling and preying upon infaunal organisms, and this ecological and behavioural conservatism could have enabled them to diversify, without undergoing a change in their basic bauplan.</span></span></span></span></span></span></span></span></span></span></span></p>
Data from: Morphological conservatism of the Family Naticidae (Gastropoda) through time: potential causes and consequences
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Figure 1. a-c in Short Communication Range extension of Sigatica pomatiella (Melvill, 1893) (Naticidae: Littorinimorpha) to northern east coast of India
Figure 1. a-c:Sigatica pomatiella (Melvill, 1893) (Height 12.45mm and width 10.15mm).
Data from: Family Naticidae (Gastropoda) from the Upper Jurassic of Kutch, India and a critical reappraisal of taxonomy and time of origination of the family
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Fig. 5 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 5 Pictures of type specimens and protoconchs of a Nerita mammilla Linnaeus, 1758 [ZMUU#386] b Mamma albula Chemnitz, 1758 [nonbinomial, ZMUC] and c Natica pyriformis Recluz, 1844 [BMNH#1991089.1]. For further information see Table 1. Bars 0.5 cm
Fig. 3 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 3 Phylogram obtained through Bayesian inference based on the COI gene fragment. Posterior probabilities are indicated at the nodes. Branches supported by values>0.95 are indicated in bold. Polytomies are due to the cut-off value specified for the consensus tree (50 % used as the default value in MrBayes)
Fig. 2 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 2 Phylogram obtained through Bayesian inference based on the concatenated data set (COI, 16S, 18S, 28S, H3) for a reduced number of taxa. Posterior probabilities are indicated at the nodes. Branches supported by values>0.95 are indicated in bold. Polytomies are due to the cut-off value specified for the consensus tree (50 % used as the default value in MrBayes)
Fig. 6 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 6 Analysed type specimens or figured type specimens of taxa that could potentially represent Polinices sp. 2, Polinices sp. 3 or Polinices sp. 4. a Natica controversa Pritchard & Gatliff, 1913 [MV#F7695]. b Natica dubia Récluz, 1844 [BMNH#1991085] (0 P. constanti Huelsken and Hollmann, herein; replacement name). c Natica deiodosa Reeve, 1855 [BMNH#1991069]. d Uber mellosum Hedley, 1924 [AMS#C20058]. e Natica phytelephas Reeve 1855 [BMNH#1991096]. f Polinices putealis Garrard, 1961 [AMS#C63344]. g Natica jukesii Reeve, 1855 [BMNH#1991067]. (h) Polinices tawhitirahia Powell, 1965 [Auckland Museum #71242]. i Natica vavaosi Reeve, 1855 [figured type]. j Natica galactites Philippi, 1851 [figured type]. k Natica cygnea Philippi, 1850 [figured type]. l Natica virginea Philippi, 1850 [figured type]. For further information see Table 1. Bars 0.5 cm
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