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707 results for “Heterobranchia”
FIGURE 7 in Benthic Heterobranch Sea Slugs (Gastropoda: Heterobranchia) from Santa Barbara County, California
FIGURE 7. Monthly variation in egg-laying and abundance of 12 of the more frequently observed heterobranchs at Naples Point, averaged across all years sampled. Values shown are means ± 1 SE of monthly number of individuals per hour per observer, 2002–19; black bars at top of graphs indicate monthly presence of egg masses.
FIGURE 9 in Benthic Heterobranch Sea Slugs (Gastropoda: Heterobranchia) from Santa Barbara County, California
FIGURE 9. Yearly change in abundance of A two northern nudibranchs, and B two southern nudibranchs at Naples Point, 2006–2019. Values shown are yearly means ± 1 SE of monthly number of individuals per hour per observer.
FIGURE 3 in Benthic Heterobranch Sea Slugs (Gastropoda: Heterobranchia) from Santa Barbara County, California
FIGURE 3. Mean monthly sea surface temperatures in the Santa Barbara Harbor, 2002–18. Data from Scripps Institution of Oceanography (2019).
FIGURE 6 in Benthic Heterobranch Sea Slugs (Gastropoda: Heterobranchia) from Santa Barbara County, California
FIGURE 6. Monthly change in (A) total number of species of Heterobranchia, and (B) total number of individuals of Nudipleura at Naples Point, averaged across all years sampled. Values shown are means ± 1 SE of monthly numbers per hour per observer, 2002–19.
FIGURE 2 in Benthic Heterobranch Sea Slugs (Gastropoda: Heterobranchia) from Santa Barbara County, California
FIGURE 2. Main study site at Naples Point. (A) Main study site, outlined in white, on a -0.3 m tide, 9 May 2015; (B) The same, from beach level, with the tide level at 0.1 m on 1 April 2019. adjacent terrace in the late 19th century. The intertidal bench at Naples Point is unique on the Santa Barbara County coastline in its breadth and flatness. Elsewhere in the County the Monterey formation is significantly tilted and sometimes folded, dipping seaward as a result of the uplift of the adjacent Santa Ynez Mountains (Dibblee 1950). Mean monthly coastal sea surface temperatures (SSTs) in the region typically vary from about 12°C in the winter to 19°C in the late summer, but were consistently elevated one to two degrees starting in 2014 (Fig. 3). During our study daily SST extremes in the Santa Barbara Harbor (about 24 km east of Naples Point) varied from 10.4°C on 22 February 2011 to 23.4°C on 31 August 2015 (Scripps Institution of Oceanography 2019).
FIGURE 1 in Benthic Heterobranch Sea Slugs (Gastropoda: Heterobranchia) from Santa Barbara County, California
FIGURE 1. Map of southern Santa Barbara County showing the location of Naples Point in relation to Santa Barbara to the east, Point Conception to the west, and the northern Channel Islands to the south.
FIGURE 5 in Benthic Heterobranch Sea Slugs (Gastropoda: Heterobranchia) from Santa Barbara County, California
FIGURE 5. Cumulative number of species of heterobranchs found at Naples Point, 2002–19. Each point represents a sample month, with 86 total months sampled. Note that no months were sampled from 2003 through 2005.
FIGURE 4 in Benthic Heterobranch Sea Slugs (Gastropoda: Heterobranchia) from Santa Barbara County, California
FIGURE 4. Selected nudibranchs found at Naples Point during the present study. (A) Trapania velox, 2 January 2019. (B) Doris cf. pickensi, 19 January 2012. (C) Thordisa bimaculata, 22 April 2015. (D) Doriopsilla gemela, 3 December 2018. (E) Tritonia myrakeenae, 14 April 2018. (F) Orienthella cooperi, 28 February 2019. (G) Hermissenda opalescens, 1 April 2017. (H) Austraeolis stearnsi, 15 January 2017, found by ZG and photographed by WG.
Fig. 4 in Japonactaeon nipponensis (Yamakawa, 1911) (Gastropoda: Heterobranchia) - single species of the family Acteonidae in the Russian seas with description of a new subspecies
Fig. 4. Distribution of Japonactaeon nipponensis ussuriensis ssp. nov. (triangles – occurrence in Sukhodol and Telyakovskogo bays).
Fig. 1 in Japonactaeon nipponensis (Yamakawa, 1911) (Gastropoda: Heterobranchia) - single species of the family Acteonidae in the Russian seas with description of a new subspecies
Fig. 1. Japonactaeon nipponensis nipponensis: A, В – shells (height 8.7 and 9.5 mm, UMMY); B – radula (SEM). Scale bar: 50 μm.
Рис. 2. Japonactaeon nipponensis ussuriensis ssp. nov.: A – голотип (высота 5.6 мм, ЗоомуЗей ДВФУ), B – паратип (высота 4.6 мм, МуЗей ИБМ); C – раковина (СЭМ, высота 1.9 мм); D, E – скульптура раковины (СЭМ). МасШтаб: 200 мкм. in Japonactaeon nipponensis (Yamakawa, 1911) (Gastropoda: Heterobranchia) - single species of the family Acteonidae in the Russian seas with description of a new subspecies
Рис. 2. Japonactaeon nipponensis ussuriensis ssp. nov.: A – голотип (высота 5.6 мм, ЗоомуЗей ДВФУ), B – паратип (высота 4.6 мм, МуЗей ИБМ); C – раковина (СЭМ, высота 1.9 мм); D, E – скульптура раковины (СЭМ). МасШтаб: 200 мкм.
Figura 4. Spurilla braziliana. A in Catálogo de las especies de Nudibranchia (Gastropoda: Heterobranchia) de la Colección de Moluscos del Museo de La Plata, Argentina
Figura 4. Spurilla braziliana. A) Espécimen vivo en ambiente natural. B) Ejemplar conservado. Barra de escala: 10 mm. Figure 4. Spurilla braziliana. A) Live specimen in natural environment. B) Preserved specimen. Scale bar: 10 mm.
Figura 2 in Catálogo de las especies de Nudibranchia (Gastropoda: Heterobranchia) de la Colección de Moluscos del Museo de La Plata, Argentina
Figura 2. Procedencia geográfica de los ejemplares de Nudibranchia depositados en la Sección Malacológica del Museo de La Plata. Figure 2. Geographical origin of the Nudibranchia specimens deposited in the Malacological Section of the Museo de La Plata.
Figura 1 in Catálogo de las especies de Nudibranchia (Gastropoda: Heterobranchia) de la Colección de Moluscos del Museo de La Plata, Argentina
Figura 1. Número de ejemplares por familias de Nudibranchia depositados en la Sección Malacológica del Museo de La Plata. Figure 1. Number of specimens by families of Nudibranchia deposited in the Malacological Section of the Museo de La Plata.
Fig. 14 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family
Fig. 14. Haplotype network of Doriopsilla Bergh, 1880 sequences from the 16S data subset (for the corresponding tree see Supp. file 2: Fig. S3). Coloured nodes on the haplotype network correspond to specific geographic localities and the size of the coloured nodes corresponds to the number of analysed sequences. Hash marks on the haplotype network denote mutational steps.
Fig. 13 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family
Fig. 13. Haplotype network of Doriopsilla Bergh, 1880 sequences from the CO1 data subset (for the corresponding tree see Supp. file 2: Fig. S4). Coloured nodes on the haplotype network correspond to specific geographic localities and the size of the coloured nodes corresponds to the number of available sequences. Hash marks on the haplotype network denote mutational steps.
Fig. 11 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family
Fig. 11. Phylogenetic reconstruction of Dendrodorididae O'Donoghue, 1924 based on16S data set, with Bathydoris aioca Er. Marcus & Ev. Marcus, 1962 and Prodoris clavigera (Thiele, 1912) as outgroup. Terminal taxa at species level partly collapsed (triangles coloured for clarity) and specimen numbers written in brackets. Species in red are newly sequenced in this study. Species more related to the Iranian sequences are mentioned with their localities. Numbers before and after slash indicate approximate likelihood ratio test (SH-aLRT) and bootstrap values for maximum likelihood (ML) respectively. Values less than 50 are removed. Coloured bars indicate species delimitation resulting from ABGD test.
Fig. 9 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family
Fig. 9. Genital system of Doriopsilla aroni sp. nov. A. Highly lobulated prostate gland. B. Transition of penis into penial sheath. C. Detail of penis showing the area, where spines start; note the various shapes. D. Fertilisation chamber containing a few eggs. E. Bursa copulatrix. F. Empty receptaculum seminis in vicinity of bursa copulatrix. Abbreviations: Bc = Bursa copulatrix; Pr = Prostate gland; Rs = Receptaculum seminis; Va = Vaginal duct; Vd = Vas deferens.
Fig. 7 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family
Fig. 7. Histological sections of Doriopsilla aroni sp. nov. A. Cross section of tubercles containing spicules. B. Cross section of the mantle with spicules; two parasites can be seen in the notum tissue. C. Cross section of oesophagus and part of cerebropleural/pedal ganglia with statocyst. D. Cross section of oesophagus and opening of intestine into stomach with pyloric gland. E. Cross section of muscular oesophagus. F. Cross section of highly ciliated and muscular intestine. Abbreviations: Cplg = Cerebropleural ganglion; G = Glandular vesicle containing mucopolysaccharides (stained in violet); GF = Glandular follicles surrounded by muscle layers; In = Intestine; Oe = Oesophagus; P = Parasite; Peg = Pedal ganglion; Pgl = Pyloric gland; Sp = Spicules; St = Statocyst with otoconia.
Fig. 2 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family
Fig. 2. External appearance of live animals. A. Dorsal view of Dendrodoris nigra (W. Stimpson, 1855) with black mantle and yellow spots. B. Dendrodoris nigra with black mantle, white spots, and a thick distinct red submarginal band; inset shows ventral view. C. Dendrodoris fumata (Rüppell & Leuckart, 1830) black form. D. Dendrodoris fumata red form. E. Dendrodoris fumata pale brown form. F. Dorsal view of Doriopsilla aroni sp. nov.; inset shows ventral view.
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Allen Brain Atlas
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