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4,028 results for “shrimps”
Fig. 10 in Two new species of shrimp of the Indo-West Pacific genus Hamodactylus Holthuis, 1952 (Crustacea: Decapoda: Palaemonidae)
Fig. 10. Colour pattern of three relatives of the genus Hamodactylus. — A. H. aqabai Bruce & Svoboda, 1983, ovigerous ♀ (UO Aq09-55) on alcyonacean coral Nephthea sp., Aqaba, Red Sea. — B–C. H. paraqabai sp. nov., ovigerous ♀♀, Madang, Papua New Guinea, on Nephthea sp. B. Holotype (MNHN-IU-2013-11092). C. Paratype (MNHN-IU-2013-11090). — D. H. pseudaqabai sp. nov., ovigerous ♀, holotype, N. Sulawesi, Indonesia (RMNH.CRUS.D.57195). Photos: Z. Ďuriš (A), T.-
Fig. 8 in Two new species of shrimp of the Indo-West Pacific genus Hamodactylus Holthuis, 1952 (Crustacea: Decapoda: Palaemonidae)
Fig. 8. Hamodactylus pseudaqabai sp. nov., ovigerous ♀, paratype (PoCL 2.2 mm, Sabah, Malaysia, RMNH.CRUS.D.53969), mouthparts. A. Left mandible, ventral view. B. Same as previous, detail of molar process. C. Right maxillula, ventral view. D. Right maxilla, ventral view, posterior lobe of scaphognathite lost in dissection. E. Right first maxilliped, ventral view. F. Right second maxilliped,
Fig. 5 in Two new species of shrimp of the Indo-West Pacific genus Hamodactylus Holthuis, 1952 (Crustacea: Decapoda: Palaemonidae)
Fig. 5. Hamodactylus paraqabai sp. nov., Ƌ (PoCL 1.1 mm, Lizard Is., Australia, MTQ-33218). A. Carapace and rostrum, lateral. B. First pleopod. C. Same as previous, endopod. D. Second pleopod. E. Same as previous, appendices interna and masculina.
Fig. 3 in Two new species of shrimp of the Indo-West Pacific genus Hamodactylus Holthuis, 1952 (Crustacea: Decapoda: Palaemonidae)
Fig. 3. Hamodactylus paraqabai sp. nov., ovigerous ♀, holotype (PoCL 1.5 mm; Madang, Papua New Guinea). A. Right first pereiopod. B. Same as previous, chela and carpus. C. Same as previous, fingers. D. Same as previous, detail of denticulations. E. Second pereiopod, lateral. F. Same as previous, dactylus and distal propodus. G. Third pereiopod. H. Same as previous, dactylus and distal propodus. I. Fifth pereiopod, dactylus and distal propodus.
Fig. 3 in A new genus and species of axiid shrimp (Crustacea, Decapoda) from a southwestern Indian Ocean seamount
Fig. 3. Montanaxius mediumquod gen. et sp. nov., paratype, ♀, NHMW 25676. A. Front in lateral view. B. Same in dorsal view. C. Major cheliped in lateral view. D. Same, fingers in mesial view. E. Minor cheliped in lateral view. F. Same, fingers in mesial view. G. Second pereopod, lateral view. H. Third pereopod, lateral view. I. Same, detail of distal articles. J. Fourth pereopod in lateral view. K. Fifth pereopod in lateral view. L. Sternites 6–8 in ventral view. M. Telson and right uropods, dorsal view. Setation omitted in A–F. Scale bars: 1 mm.
Fig. 1 in A new genus and species of axiid shrimp (Crustacea, Decapoda) from a southwestern Indian Ocean seamount
Fig. 1. Montanaxius mediumquod gen. et sp. nov., holotype, ³, NHMW 25677. A. Carapace in lateral view. B. Same, dorsal view. C. Minor cheliped in dorsal view. D. Major cheliped in dorsal view. E. Tip of pereopod 2. F. Sternites 6–8. G. Ventral part of coxa 5 and pleomere 1 with Plp1 (first article bent) in lateral view. H. Left Plp1 in anterior view. I. Terminus of left Plp1, posterior view. J. Left Plp2, mesial view. K. Right Plp2, anterior view. Setation omitted in C and D. Scale bars: A–H, J–K = 1 mm; I = 500 µm.
Fig. 4 in A new genus and species of axiid shrimp (Crustacea, Decapoda) from a southwestern Indian Ocean seamount
Fig. 4. Montanaxius mediumquod gen. et sp. nov., holotype, ³, NHMW 25677. A. Front in dorsal view. B. Same in lateral view. C. Terminus of left first pleopod, posterior view. Abbreviations: c = cincinnuli (appendix interna); s = spine. Scale bars: A–B = 1 mm; C = 500 µm.
Fig. 2 in A new genus and species of axiid shrimp (Crustacea, Decapoda) from a southwestern Indian Ocean seamount
Fig. 2. Montanaxius mediumquod gen. et sp. nov., paratype, ♀, NHMW 25675. A. Front in lateral view (rostrum broken). B. Pleon in lateral view. C. Left eyestalk, dorsal view. D. Right antennule in mesial view. E. Right antenna in ventral view. F. Third maxilliped in lateral view. G. Same in mesial view. H. Sternites 6–8. I. Left first pleopod in lateral view. J. Right second pleopod in posterior view. All setation omitted except in F and I. Scale bars: 1 mm.
Fig. 21 in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 21. Caridina poarae sp. nov. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Pre-anal carina. h. Uropodal diaeresis. i. Telson. j. Eggs. k. Cephalothorax. MNHN-IU-2018-2922 (a–k).
Fig. 18 in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 18. Caridina piokerai sp. nov. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Pre-anal carina. h. Uropodal diaeresis. i. Telson. j. Eggs. k. Cephalothorax. MNHN-IU-2018-2900 (a–k).
Fig. 16 in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 16. Caridina tupaia de Mazancourt, Marquet & Keith, 2019. Cephalothorax. MNHN-IU-2018 -2884.
Fig. 17 in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 17. Caridina maeana sp. nov. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Pre-anal carina. h. Uropodal diaeresis. i. Telson. j. First male pleopod. k. Second male pleopod. l. Eggs. m. Cephalothorax. MNHN-IU-2018-2889: (a–i, m), MNHN-IU-2018-2891 (j–k) and MNHN-IU-2018-2895 (l).
Fig. 12. Caridina buehleri Roux, 1934. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 12. Caridina buehleri Roux, 1934. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Pre-anal carina. h. Uropodal diaeresis. i. Telson. j. Pre-anal carina. k. Eggs. l. Cephalothorax. MNHN-IU-2018-2845 (a–i, k), MNHN-IU-2015-20 (j) and MNHN-IU-2018-2846 (l).
Fig. 11 in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 11. Caridina turipi sp. nov. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Pre-anal carina. h. Uropodal diaeresis. i. Telson. j. Eggs. k. Cephalothorax. MNHN-IU-2014-20883 (a–f, h, j–k), MNHN-IU-2014-20882 (g) and MNHN-IU-2014-20878 (i).
Fig. 10. Caridina typus H. Milne Edwards, 1837. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 10. Caridina typus H. Milne Edwards, 1837. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Preanal carina. h. Uropodal diaeresis. i. Telson. j. First male pleopod. k. Second male pleopod. l. Eggs. m. Cephalothorax. MNHN-IU-2018-2825 (a–c, e, h), MNHN-IU-2018-2842 (d, f), MNHN-IU-2018 -2826 (g, j–k), MNHN-IU-2018-2833 (i), MNHN-IU-2018-2832 (l) and MNHN-IU-2018-2824 (m).
Fig. 8. Caridina mertoni Roux, 1911. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 8. Caridina mertoni Roux, 1911. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Pre-anal carina. h. Uropodal diaeresis. i. Telson. j. First male pleopod. k. Second male pleopod. l. Eggs. m. Cephalothorax. n–o. Rostrum variations. MNHN-IU-2018-2817 (a–f, m), MNHN-IU-2018-2815 (h–i, l), MNHN-IU-2018-2816 (j–k), MNHN-IU-2017-2109 (n) and MNHN-IU-2018-2819 (g, o).
Fig. 3 in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 3. Caridina barakoma sp. nov. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Pre-anal carina. h. Uropodal diaeresis. i. Telson. j. First male pleopod. k. Second male pleopod. l. Eggs. m. Cephalothorax. MNHN-IU-2014-20807 (a–i, l–m) and MNHN-IU-2014-20805 (j–k).
Fig. 6 in Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species
Fig. 6. Caridina choiseul sp. nov. a. First pereiopod. b. Second pereiopod. c. Third pereiopod. d. Fifth pereiopod. e. Dactylus of third pereiopod. f. Dactylus of fifth pereiopod. g. Pre-anal carina. h. Uropodal diaeresis. i. Telson. j. First male pleopod. k. Second male pleopod. l. Eggs. m–n. Rostrum variations. o. Cephalothorax. MNHN-IU-2014-20833 (a–g (top, with spine), h, l), MNHN-IU-2014-20836 (g (botom, without spine)), MNHN-IU-2014-20831 (i), MNHN-IU-2014-20829 (j–k), MNHN-IU-2014-20827 (m), MNHN-IU-2014-20837 (n) and MNHN-IU-2014-20826 (o).
Illuminating the impact of diel vertical migration on visual gene expression in deep-sea shrimp
<p>Diel vertical migration (DVM) of marine animals represents one of the largest migrations on our planet. Migrating fauna are subjected to a variety of light fields and environmental conditions that can have notable impacts on sensory mechanisms, including an organism's visual capabilities. Among deep-sea migrators are oplophorid shrimp, that vertically migrate hundreds of meters to feed in shallow waters at night. These species also have bioluminescent light organs that emit light during migrations to aid in camouflage. The organs have recently been shown to contain visual proteins (opsins) and genes that infer light sensitivity. Knowledge regarding the impacts of vertical migratory behavior, and fluctuating environmental conditions, on sensory system evolution is unknown. In this study, the oplophorid <i>Systellaspis debilis</i> was either collected during the day from deep waters or at night from relatively shallow waters to ensure sampling across the vertical distributional range. <i>De novo </i>transcriptomes of light sensitive tissues (eyes/photophores) from the <i>Day/Night </i>specimens were sequenced and analyzed to characterize opsin diversity and visual/light interaction genes. Gene expression analyses were also conducted to quantify expression differences associated with DVM. Our results revealed an expanded opsin repertoire among the shrimp and differential opsin expression that may be linked to spectral tuning during the migratory process. This study sheds light on the sensory systems of a bioluminescent invertebrate and provides additional evidence for extraocular light sensitivity. Our findings further suggest opsin coexpression and subsequent fluctuations in opsin expression may play an important role in diversifying the visual responses of vertical migrators.</p>
FIGURE 4 in First report of two deep-sea shrimps of the genus Acanthephyra A. Milne-Edwards, 1881 (Crustacea: Decapoda: Acanthephyridae) from southwestern Atlantic
FIGURE 4. Geographic distribution of Acanthephyra armata A. Milne-Edwards, 1881 b. Black circles = previous records; star = new record.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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