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This checklist is the fifth and last compilation on the decapod crustaceans reported to São Paulo (Brazil) coastal area, resulting from long-term multidisciplinary projects, which combined morphological analyses and molecular techniques. The current research includes 75 decapod species, herein referred as shrimps/lobsters-like (shrimps, ghost-shrimps, lobsters, and related groups), reported to São Paulo coastal area. These species occur in marine, estuarine, and amphidromous habitats and are classified into 21 families as follow: Aristeidae (2 spp., 2 genera), Atyidae (4 spp., 2 genera), Axianassidae (1 sp., 1 genus), Callianassidae (1 sp., 1 genus), Callichiridae (6 spp., 4 genera), Crangonidae (1 sp., 1 genus), Glyphocrangonidae (1 sp., 1 genus), Luciferidae (2 spp., 2 genera), Nephropidae (4 spp., 2 genera), Palaemonidae (15 spp., 9 genera), Palinuridae (2 spp., 1 genus), Pandalidae (1 sp., 1 genus), Pasiphaeidae (1 sp., 1 genus), Penaeidae (10 spp., 6 genera), Sergestidae (3 spp., 3 genera), Sicyoniidae (4 spp., 1 genus), Scyllaridae (5 spp., 3 genera), Solenoceridae (4 spp., 3 genera), Stenopodidae (2 spp., 1 genus), and Upogebiidae (6 spp., 1 genus). We generated new sequences of cytochrome oxidase subunit I (barcode region) and 16S genes (51 and 54, respectively) of 54 species. Our examination concluded that 75 shrimps/lobsters-like species are reported to the São Paulo coast. We excluded Leander tenuicornis (Palaemonidae), Penaeus setiferus (Penaeidae), Philocheras gorei (Crangonidae), and Rhynchocinetes typus (Rhynchocinetidae) from this list.

Lissosabinea Christoffersen, 1988 Lissosabinea Christoffersen, 1988: 46, 48 [type species: Sabinea tridentata Pequegnat, 1970, by original designation. Gender feminine], Published as part of Tavares, Marcos, Mendonça, Joel Braga De & Colavite, Jéssica, 2022, New record and a new species of Lissosabinea Christoffersen, 1988 (Decapoda: Caridea: Crangonidae) from Brazil, pp. 75-83 in Zootaxa 5182 (1) on page 76, DOI: 10.11646/zootaxa.5182.1.5, http://zenodo.org/record/7042853, {"references":["Christoffersen, M. L. (1988) Genealogy and phylogenetic classification of the world Crangonidae (Crustacea, Caridea), with a new species and new records for the southwestern Atlantic. Revista Nordestina de Biologia, 6, 43 - 59.","Pequegnat, L. H. (1970) Deep-sea caridean shrimps with descriptions of six new species. Texas A & M University Oceanographic Studies, 1, 59 - 123."]}

Lissosabinea tridentata (Pequegnat, 1970) Sabinea tridentata Pequegnat, 1970: 115, figs 4–16, 4–17 (type locality: southeastern Gulf of Mexico, 391 m); Pequegnat et al. 1971: 10; Dardeau & Heard 1983: 5, 7 [key], 8 fig. 2b, 29 fig. 15, 30. Lissosabinea tridentata — Komai 2006: 41, figs 5-6; Poore 2004: 136, 138 fig. 36a, 139 [= L. arthuri Taylor & Collins 2009, non Lissosabinea tridentata (Pequegnat, 1970)]; Taylor & Collins 2009: 176 [key], 184, fig. 7. Material examined: United States: Holotype, male, cl 4.0 mm (USNM 128808), R/ V “ Alaminos, Cruise 65A, Gulf of Mexico, off Florida, stn 9–21, 24°58’12.0”N, 84°16’48.0”W, 14.vii. 1965, 391 m. Paratype: 1 ovigerous female, cl 4.3 mm (USNM 128809), same data as holotype. Brazil: 1 female, cl 3.1 mm (MZUSP 33444), R/ V “Marion Dufresne”, TAAF MD 55/Brésil Expedition, Vitória-Trindade Seamount Chain, Montague Bank, stn 16 DC29, 20°26.5’S, 36°41.4’W, M. Tavares coll., 14.v.1987, 310– 350 m, sand with foraminiferans. Distribution. Gulf of Mexico, off Flórida, 391 m and Brazil (Vitória-Trindade Seamount Chain), 310- 350m. Remarks. The female of L. tridentata from Brazilian waters agrees well with the type specimens from the southeast Gulf of Mexico. However, in the female paratype the branchiostegal spine is straight and obliquely directed upward (Komai 2006: 5 B), whereas the female from Brazil agrees better with the male holotype in having the branchiostegal spine less strong and more forwardly directed. Here it is confirmed that L. tridentata has two arthrobranchs at the base of the third maxilliped, one large and a much smaller one well discernible in the Brazilian specimen. Lissosabinea tridentata is heretofore known from its type locality in the southeast Gulf of Mexico, off Florida (24°N), and is reported here for the first time from much farther south, Brazil (20°S), off the coast of Espírito Santo, Vitória-Trindade Seamount Chain, Montague Bank, between 310 and 391 m (Pequegnat 1970; Dardeau & Heard 1983; Vázquez-Bader & Garcia 2013; this report). Lissosabinea tridentata and Lissosabinea christofferseni sp. nov. both have a transverse row of four acute teeth on the posterior margin of the sixth pleonal sternite followed by a preanal spine (Fig. 4B, D). To the best of our knowledge, within Crangonidae, such a similar armature is only found in the crangonid Placopsicrangron formosa Komai & Chan, 2009, in which the posterior margin of the sixth pleonal sternite bears a transversal row of about 12 spines near the posterior margin (see Komai & Chan, 2009: 255, fig. 2D, E). An examination of the other species in Lissosabinea needs to be carried out to ascertain how general this feature is in the genus., Published as part of Tavares, Marcos, Mendonça, Joel Braga De & Colavite, Jéssica, 2022, New record and a new species of Lissosabinea Christoffersen, 1988 (Decapoda: Caridea: Crangonidae) from Brazil, pp. 75-83 in Zootaxa 5182 (1) on pages 81-82, DOI: 10.11646/zootaxa.5182.1.5, http://zenodo.org/record/7042853, {"references":["Pequegnat, L. H. (1970) Deep-sea caridean shrimps with descriptions of six new species. Texas A & M University Oceanographic Studies, 1, 59 - 123.","Dardeau, M. R. & Heard, R. W. Jr. (1983) Crangonid shrimps (Crustacea: Caridea), with a description of a new species of Pontocaris. Memoirs of the Hourglass Cruises, 6, 1 - 39.","Komai, T. (2006) A review of the crangonid genus Lissosabinea Christoffersen, 1988 (Crustacea, Decapoda, Caridea), with descriptions of three new species from the western Pacific. Zoosystema, 28 (1), 31 - 59.","Poore, G. C. B. (2004) Marine decapod Crustacea of southern Australia. A guide to identifi cation (with chapter on Stomatopoda by Shane Ahyong). CSIRO Publishing, Melbourne, 574 pp. https: // doi. org / 10.1071 / 9780643092129","Taylor, J. & Collins, D. J. (2009) New records of the shrimp genus Lissosabinea (Caridea: Crangonidae) from Australia including descriptions of three new species and a key to world species. Memoirs of Museum Victoria, 66, 175 - 187. https: // doi. org / 10.24199 / j. mmv. 2009.66.16","Vazquez-Bader, A. R. & Garcia, A. (2013) Crangonidae and Glyphocrangonidae (Decapoda; Caridea) of the Southern Gulf of Mexico. Zootaxa, 3669 (3), 367 - 383. https: // doi. org / 10.11646 / zootaxa. 3669.3.10","Komai, T. & Chan, T. - Y. (2009) New genus and species of Crangonidae (Decapoda: Caridea) with a large plate-like eye from the abyssal zone off Taiwan, northeastern Pacific. Journal of Crustacean Biology, 29 (2), 254 - 265. https: // doi. org / 10.1651 / 08 - 3080 R. 1"]}

Lissosabinea christofferseni sp. nov. (Figures 1A–E; 2A–F; 3A–F; 4A, B) Lissosabinea cf. tridentata — Christoffersen, 1988: 53, 54; Komai 2006: 36, 44; Spivak et al. 2019: 48 [non Lissosabinea tridentata (Pequegnat, 1970)] Lissosabinea tridentata — Spivak 1997: 79, 80. Type material. Holotype, female, cl 4.7 mm (MZUSP 22798), R/ V “Marion Dufresne”, TAAF MD 55/ Brésil Expedition, off Espírito Santo, Abrolhos Bank, stn 53 CB92, 19°34’S, 38°55’W, M. Tavares coll., 29.v.1987, 340– 360 m, on fluid mud with foraminiferans and pteropods. Paratypes: 1 male, cl 3.5 mm (MZUSP 22799) and 1 female, cl 4.2 mm (MZUSP 29971), same data as holotype. Type locality. Off the coast of Espírito Santo, Abrolhos Bank, 19°34’S, 38°55’W, 340–360m. Distribution. So far only known from Brazil: Abrolhos Bank (off the coast of Espírito Santo in fluid mud with foraminiferans and pteropods, and sand with foraminiferans) and Chuí (off the coast of Rio Grande do Sul, in sand calcareous rock and corals, and sand and gravel), between 166 and 360 m. Etymology. The new species is named after our colleague, Martin Christoffersen (Universidade Federal da Paraíba), in recognition for his numerous contributions to the Brazilian zoology. Description. Rostrum slightly upcurved distally, broad proximally, distal part laterally compressed, leaf-like, abruptly narrowing at about distal 0.25 in dorsal view; tip almost reaching distal margin of first article of antennular peduncle (Figs. 1A, B; 2A); dorsal surface deeply concave with low, blunt median carina extending to level of base of first epigastric tooth, shallow sulcus on either side of median carina; rostral lateral margin forming strongly upturned lateral carina extending to about distal 0.50 of rostrum, ending in strong dorsolateral tooth (Fig. 1B, D, E); rostral ventral face compressed, forming gently convex longitudinal keel ending abruptly near tip of rostrum (Fig. 1B, D, E). Carapace (Figs. 1A, 2A, 4A) middorsal carina sharply delimited, extending to 0.80 of carapace length, armed with three strong nearly equidistant teeth; first epigastric tooth strongest, directed upwards, almost reaching base of rostrum; second epigastric and cardiac teeth nearly equal in size, directed forward. Cornea of eye (Fig. 2A) spherical, maximum diameter 0.21 of carapace length. Antennal tooth small, almost reaching to midlength of cornea. Branchiostegal tooth straight, slightly directed upward, short, reaching slightly beyond midlength of antennal basicerite only (Figs. 1A, 2A). Pterygostomial angle armed with acute tooth; hepatic and epibranchial teeth of about same size, carinae low, epibranchial carina longest (Figs. 1A, 4A). Antennular peduncle (Fig. 2A) reaching 0.50 of antennal scale; stylocerite spiniform, laterally compressed in distal half, reaching nearly distal margin of first peduncular segment; lateral flagellum of 8–13 articles in females; mesial flagellum of 12–15 articles in females. Antennal scale (Fig. 2A, B) about 0.57 of carapace length, about 3.30 times as long as wide, lateral margin slightly concave, distal blade rounded; basicerite with small ventrolateral tooth; carpocerite reaching about midlength of antennal scale. Fourth thoracic sternite with long median spur; IV-VIII sternites with acute median spine each, spines decreasing progressively in size posteriorly (Fig. 2C). Mouthparts not dissected. Third maxilliped slightly overreaching distal end of antennal scale; ultimate segment longer than penultimate segment; antepenultimate segment moderately lateraly compressed. First pereopod (Fig. 3A, B) with palm about 3 times as long as wide; cutting edge of palm strongly oblique; pollex relatively large, triangular, slightly recurved; carpus with one moderately large spine on lateral margin; merus with strong dorsodistal spine not reaching distal margin of anteriorly extended carpus, distolateral margin without tooth; ventral lamina terminating in acute tooth. Second pereopod (Fig. 3C) falling far short of midlength of merus of first pereopod; dactylus about 0.36 length of propodus; propodus not widened distally; carpus as long as dactylus and propodus together; merus almost twice as long as carpus; ischium distinctly shorter tha merus. Third pereopod (Fig. 3D) very slender; ischium about 0.63 length of merus. Fourth pereopod (Fig. 3E) moderately slender, overreaching antennal scale by length of dactylus and about 0.40 of propodus; dactylus compressed dorsoventrally, about 0.58 as long as propodus; propodus with distal tuft of setae; carpus 0.37 as long as propodus; merus nearly 8.0 times as long as wide, unarmed on dorsodistal margin; ischium about 0.66 times as long as merus. Fifth pereopod (Fig. 3F) similar to fourth, overreaching antennal scale by slightly more than length of dactylus; ischium 0.40 times as long as merus. Pleonal somites 1–5 pleura all rounded marginally. Second pleonal somite smooth, dorsally (Fig. 1A). Third somite somewhat gibbous with distinct middorsal carina stretching from back to front almost 4/5 over entire length of somite, strongly convex in lateral view, posterodorsal margin of somite strongly produced posteriorly (Figs. 1A, C; 2D). Fourth and fifth somites also smooth, non-carinate dorsally. Sixth somite about 1.3 times as long as high; dorsal surface with shallow sulcus along midline flanked by two submedian carinae, each ending in acute spine at some distance from posterior margin (Figs. 1A, C; 2E),ventral surface with transverse row of four acute spines adjacent to posterior margin succeeded medially by distinct preanal spine (Fig. 4B). Telson tapering to small posteromedial spine, with 2 pairs of dorsolateral movable spines; 3 pairs of posterolateral blunt spines: lateralmost longest, second very short, mesialmost about 4/5 the length of the lateralmost spine; terminal process blunt (Fig. 2E, F). Remarks. Lissosabinea christofferseni sp. nov. immediately differs from the other described species of Lissosabinea by having two longitudinal, dorso-submedian carinae on the sixth pleonal somite, each terminating in a small acute submarginal spine (Fig. 2E), whereas in all its congeners the sixth pleonal somite is devoid of such carinae and spines (Komai 2006; Taylor & Collins 2009). Lissosabinea tridentata, L. armata and L. christofferseni sp. nov. are the only species in the genus with three teeth on dorsal midline of the carapace and in that they stand apart from L. arthuri, L. beresfordi, L. ecarina, L. indica, and L. lynseyae, whose carapace bears two teeth on dorsal midline (cf. Komai 2006; Taylor & Collins, 2009), and from L. unispinosa, which is unique in having only one tooth on the dorsal midline of the carapace (Komai 2006). Lissosabinea christofferseni sp. nov. can be separated from its northwestern Atlantic counterpart L. tridentata by having the (characters for L. tridentata within brackets): (1) distal part of the rostrum leaf-like, abruptly narrowing at about distal 0.25 in dorsal view (Fig. 2A) (vs distal part of rostrum spiniform, tapering progressively distally in dorsal view) (see Komai 2006: fig. 6B); (2) constriction of rostrum subdistally, well beyond the pair of rostral lateral spines in dorsal view (Fig. 2A) (vs rostral constriction starting at the level of the base of the pair of rostral lateral spines in dorsal view (see Komai 2006: fig. 6B); (3) pair of rostral lateral spines relatively shorter and broader in L. christofferseni sp. nov. than in L. tridentata (Fig. 2A vs Komai 2006: fig. 6B); (4) rostrum’s ventral keel not reaching to rostral tip (Fig. 1B, D, E) (vs ventral keel gently joining the rostral tip (Fig. 4C) (see also Komai 2006: fig. 6A); (5) carapace cardiac, second and first epigastric teeth nearly equidistant in lateral view (Fig. 4A) (vs first and second epigastric teeth distinctly closer to each other than to the cardiac tooth (Fig. 4C) (see also paratype of L. tridentata in Komai 2006: 5 B); (6) carapace epibranchial carina well defined and epibranchial and hepatic spines well separated from each other (Figs. 2A, 4A) (vs epibranchial carina poorly defined and epibranchial and hepatic spines much closer to each other) (Fig. 4C); (7) third maxilliped almost reaching to distal end of antennal scale (vs third maxilliped overreaching antennal scale by half length of ultimate segment); (8) telson with 2 pairs of dorsolateral spines; 3 pairs of posterolateral blunt spines: lateralmost longest, second very short, mesialmost about 4/5 the length of the lateralmost spine; terminal process blunt (Fig. 2E, F) (vs 2 pairs of dorsolateral spines; 1 pair of posterolateral minute spines, 3 long simple setae; terminal process acutely pointed (see Komai 2006: fig. 5E, F). Lissosabinea armata differs from L. christofferseni sp. nov. by having the shape of the rostrum much more similar to that of L. tridentata (see Komai 2006: fig. 8A); in the antennal tooth elongate, slightly overreaching the anterior margin of eye and in the first epigastric tooth also elongate, overhanging the base of the rostrum (vs antennal and first epigastric teeth much shorter in L. christofferseni sp. nov.). Lissosabinea armata yet differs in possessing much longer branchiostegal spines, the median carina on the third pleonal somite extremely high, the distal margin of the antennal blade obliquely truncate and the sixth pleonal somite provided with numerous minute dorsoproximal spines (Komai 2006: fig. 8E) (vs distal margin of blade broadly rounded and sixth pleonal somite devoid of dorsoproximal spines in L. christofferseni sp. nov.) (Figs. 1A, C; 2E; 4A). Lissosabinea armata also differs in the arrangement of the posterolateral spines in the telson, which are as follows: lateralmost spine short, blunt; second spine slender; mesialmost spine stout, longest; terminal process rounded (see Komai 2006: fig. 8E, F) (see above for L. christofferseni sp. nov.) (Fig. 2E, F). Although the two specimens from Chuí assigned to Lissosabinea cf. tridentata by Christoffersen (1988) were not located for study, they are referred herein to Lissosabinea christofferseni sp. nov. on account of the sixth pleonal somite being armed with one pair of submedian dorsal carinae and submarginal spines, a character unique to the present new species (Fig. 2E). Lissosabinea christofferseni sp. nov. has two arthrobranchs at the base of the third maxilliped, one large and a much smaller one. Such arrangement of the arthrobranchs was also found for L. indica by Kim & Natsukari (2000) and is reported herein for L. tridentata (see below). Christoffersen (1988) reported only one arthrobranch in the third maxilliped in the specimens from Chuí (as far it was possible to ascertain in the exuviae and the damaged specimen available to him) and may well have overlooked the smaller arthrobranch., Published as part of Tavares, Marcos, Mendonça, Joel Braga De & Colavite, Jéssica, 2022, New record and a new species of Lissosabinea Christoffersen, 1988 (Decapoda: Caridea: Crangonidae) from Brazil, pp. 75-83 in Zootaxa 5182 (1) on pages 76-81, DOI: 10.11646/zootaxa.5182.1.5, http://zenodo.org/record/7042853, {"references":["Christoffersen, M. L. (1988) Genealogy and phylogenetic classification of the world Crangonidae (Crustacea, Caridea), with a new species and new records for the southwestern Atlantic. Revista Nordestina de Biologia, 6, 43 - 59.","Komai, T. (2006) A review of the crangonid genus Lissosabinea Christoffersen, 1988 (Crustacea, Decapoda, Caridea), with descriptions of three new species from the western Pacific. Zoosystema, 28 (1), 31 - 59.","Spivak, E. D., Farias, N. E., Ocampo, E. H., Lovrich, G. & Luppi, T. (2019). Annotated catalogue and bibliography of marine and estuarine shrimps, lobsters, crabs and their allies (Crustacea: Decapoda) of Argentina and Uruguay (Southwestern Atlantic Ocean). Frente Maritimo, 26, 1 - 138.","Pequegnat, L. H. (1970) Deep-sea caridean shrimps with descriptions of six new species. Texas A & M University Oceanographic Studies, 1, 59 - 123.","Spivak, E. D. (1997) Los crustaceos decapodos del Atlantico sudoccidental (25 ° - 55 ° S): distribucion y ciclos de vida. Investigaciones Marinas, 25, 69 - 91. https: // doi. org / 10.4067 / S 0717 - 71781997002500006","Taylor, J. & Collins, D. J. (2009) New records of the shrimp genus Lissosabinea (Caridea: Crangonidae) from Australia including descriptions of three new species and a key to world species. Memoirs of Museum Victoria, 66, 175 - 187. https: // doi. org / 10.24199 / j. mmv. 2009.66.16","Kim, J. N. & Natsukari, Y. (2000) Range extension of three crangonid shrimps (Decapoda, Caridea) to Japanese waters. Crustacean Research, 29, 35 - 44. https: // doi. org / 10.18353 / crustacea. 29.0 _ 35"]}

Lissosabinea tridentata (Pequegnat, 1970) known hitherto from the Gulf of Mexico off Florida (24°N) and only western Atlantic representative of the genus, is reported here for the first time from much further south, Brazil off the coast of Espírito Santo, Vitória-Trindade Seamount Chain, Montague Bank (20°S), between 310 and 391 m. A second western Atlantic species, Lissosabinea christofferseni sp. nov., is described here as new from material collected in the Abrolhos Bank, at depth between 340–360 m. One exuviae and one damaged specimen, reported in 1988 from off the coast of Chuí, Brazil (34°S) (at that time mistakenly referred to as Uruguay) and attributed to “Lissosabinea cf. tridentata” are herein referred to the new species. It has been clarified that Lissosabinea christofferseni sp. nov. and L. tridentata have a transverse row of teeth adjacent to the posterior margin of the sixth pleonal sternite; in crangonids, such a feature is so far known only in Placopsicrangron formosa Komai & Chan, 2009.

Panulirus argus virus 1 (PaV1) (Family Mininucleoviridae) causes chronic and systemic infection in wild juvenile spiny lobsters Panulirus argus (Latreille, 1804), ending in death by starvation and metabolic wasting. In marine decapods, the antennal gland is involved in osmoregulation and excretion. In this compact organ, fluid is filtered from the hemolymph, and ions are reabsorbed to produce a hypotonic urine. Although PaV1 is released with the urine in infected individuals, little is known regarding the metabolic effect of PaV1 in the antennal gland. The objective of this study was to perform a comparative evaluation of the metabolic profile of the antennal gland of clinically PaV1-infected lobsters versus those with no clinical signs of infection, using proton nuclear magnetic resonance analysis. Overall, 48 compounds were identified, and the most represented metabolites were those involved in carbohydrate, amino acid, energy, and nucleotide metabolism. Most of the metabolites that were down-regulated in the infected group were essential and non-essential amino acids. Some metabolites involved in the urea cycle and carbohydrate metabolism were also altered. This study represents a first approach to the metabolic evaluation of the antennal gland. We broadly discuss alterations in the content of several proteinogenic and non-proteinogenic amino acids and other key metabolites involved in energetic and nucleotide metabolism.

In this study, a microcosm experiment was conducted for 30 days to assess the impact of the presence of juvenile gray shrimp Crangon crangon on meiofauna. The results suggested that juvenile shrimp had a significant negative impact on the abundance of nematodes and copepods, but no effect on polychaetes. Moreover, nematodes showed a significant decline in individual weight. The collected nematodes were taxonomically identified and assigned to five functional traits: shapes of the tail and amphid, life history, feeding types, and adult length. The nematode traits were affected by the number of shrimp introduced, and descriptors followed normal or inversed bell-shaped curves. When no shrimp were present, the nematofauna had a higher species richness compared with treatments of 4, 8, and 12 shrimp. Bell-shaped curve patterns were common in relation to the two phases of feeding for C. crangon. During the first phase, C. crangon consumed the nematode species Oncholaimus campylocercoides; thereafter, shrimp fed mostly on the nematode Anticoma eberthi and copepods.

New finds of nine species of Crangonidae shrimp are described, and new data on the geographical range and bathymetry are presented. The longitudinal carinae and spines on segment VI of the abdomen are quite varied in the species studied. There are four combinations of their morphotypes. The structures of pleopod II of the male also demonstrate two combinative variants.

Pontocaris boschii (Christoffersen, 1988) Aegaeon boschii Christoffersen, 1988: 49, figs. 2–3. Material examined. None. Distribution. Western Atlantic— Brazil (Rio de Janeiro, São Paulo, Santa Catarina, Rio Grande do Sul), Uruguay, and Argentina (Christoffersen 1988; Chan 1995; Alves-Júnior et al. 2018). Remarks. This species was previously recorded in São Paulo state as Aegeon boschii by Christoffersen (1988), but the exact locality was not mentioned. According to Christoffersen (1988) the specimens were collected at 60 m, in sand and mud, 15.56 °C., Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on page 34, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Chan, T. Y. (1995) Crustacea Decapoda Crangonidae: Revision of the three closely related genera Aegaeon Agassiz, 1846, Pontocaris Bate, 1888 and Parapontocaris AIcock, 1901. ln: Crosnier, A. (Eds.) Resultats des Campagnes MUSORSTOM 15. Memoires du Museum National d'Histoire Naturelle. Serie A. Zoologie, 168: 269 - 336.","Alves-Junior, F. A., Viana, G. F. S., Araujo, M. S. L. C. & Souza-Filho, J. F. (2018) New records of the family Crangonidae (Decapoda: Caridea) from Southwestern Atlantic. Zootaxa, 4369 (1), 046 - 062. https: // doi. org / 10.11646 / zootaxa. 4369.1.2"]}

Family Crangonidae Haworth, 1825 Genus Pontocaris Spence Bate, 1888, Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on page 34, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Spence Bate, C. S. (1888) Report on the Crustacea Macrura collected by H. M. S. Challenger during the Years 1873 - 76. In: Murray, J. (Eds.) Zoology. Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 - 76 Under the Command of Captain George S. Nares, R. N., F. R. S. and the Late Captain Frank Tourle Thomson, R. N. Wyville Thomson, C. and J. Murray (series eds.) Vol. 24. Edinburgh, Neill and Company. pp. i - xc, 1 - 942."]}

Mantelatto, Fernando L., Al, Et (2022): Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea]. Zootaxa 5121 (1): 1-74, DOI: https://doi.org/10.11646/zootaxa.5121.1.1, URL: http://dx.doi.org/10.11646/zootaxa.5121.1.1

The effects of antidepressants in the environment are starting to generate considerable interest due to the fact that neurotransmitters influence a range of biological processes. Crypsis is an important behavioural and physiological response in many crustaceans modulated by monoamine and pigment dispersing/concentrating hormones. This study aimed to develop a test methodology and investigate the effects of the selective serotonin reuptake inhibitor (SSRI), fluoxetine, on a chromatophore index and overall carapace ‘darkness’ in the common sand shrimp Crangon crangon. Adult shrimp were exposed for either 1 h, 1 day or 1 week across a range of nominal fluoxetine concentrations (10 ng/L, 100 ng/L and 1000 ng/L) and the chromatophore index or carapace percentage ‘darkness’ was recorded following 30 min on white and black substrates. These experiments were repeated three times using different specimens. Animals became significantly darker (~20%) on darker background and lighter on light backgrounds as one might expect. However, time periods over which the animals were recorded had a significant impact on the colouration suggesting habituation to laboratory conditions. Fluoxetine exposure came up as a significant factor in two of the three trials for the chromatophore index but the results was inconsistent between trials. There was a high degree of correlation between the chromatophore index and the percentage darkness analyses however, there was no significant effects for fluoxetine exposure with the percentage darkness data. We conclude that the effects on antidepressants on colour change remain inconclusive from these experiments and we discuss potential areas to improve the repeatability of the experiments.

The European brown shrimpCrangon crangonis an abundant and commercially important species in the North Sea. Currently, there is interest in landing live shrimp to provide fresh animals for a growing market in live brown shrimp. During 4 survival studies between 2014 and 2016, shrimp were collected from commercial trawlers and maintained alive in off-shore facilities. From Day 1 onwards, a minority of shrimp (~2.24%) developed a white discoloration of the abdominal muscles and a depigmentation of the distal part of the abdomen, along with paralysis of the affected tissues and appendages. As the symptoms progressed, a circumferential blackish delineation appeared, creating a distinct boundary between healthy and necrotic tissue. Affected shrimp survived up to 3 wk, although in several animals the distal part of the tail was completely lost. Histological and electron microscopical examination confirmed the myonecrosis. A secondary bacterial invasion of the necrotic muscle was observed in some animals. RT-PCR for infectious myonecrosis virus was negative. The condition appears not to be contagious, based on the feeding of healthy shrimp with necrotic tissue of affected shrimp. Based on these observations, a mechanical cause inflicted during the catching process is proposed.

Marine invertebrates inhabiting estuaries and coastal areas are exposed to natural suspended particulate matter (SPM) like clay or diatom shells but also to anthropogenic particles like microplastics. SPM concentrations may reach 1 g per liter and more, comprising hundreds of millions of items in the size range of less than 100 μm. Suspension feeders and deposit feeders involuntarily ingest these particles along with their food. We investigated whether natural and anthropogenic microparticles at concentrations of 20 mg L

Multiple enveloped viruses with rod-shaped nucleocapsids have been described, infecting the epithelial cell nuclei within the hepatopancreas tubules of crustaceans. These bacilliform viruses share the ultrastructural characteristics of nudiviruses, a specific clade of viruses infecting arthropods. Using histology, electron microscopy and high throughput sequencing, we characterise two further bacilliform viruses from aquatic hosts, the brown shrimp (Crangon crangon) and the European shore crab (Carcinus maenas). We assembled the full double stranded, circular DNA genome sequences of these viruses (~113 and 132 kbp, respectively). Comparative genomics and phylogenetic analyses confirm that both belong within the family Nudiviridae but in separate clades representing nudiviruses found in freshwater and marine environments. We show that the three thymidine kinase (tk) genes present in all sequenced nudivirus genomes, thus far, were absent in the Crangon crangon nudivirus, suggesting there are twenty-eight core genes shared by all nudiviruses. Furthermore, the phylogenetic data no longer support the subdivision of the family Nudiviridae into four genera (Alphanudivirus to Deltanudivirus), as recently adopted by the International Committee on Taxonomy of Viruses (ICTV), but rather shows two main branches of the family that are further subdivided. Our data support a recent proposal to create two subfamilies within the family Nudiviridae, each subdivided into several genera.

Sand shrimp, Crangon septemspinosaSay, 1818, is one of the most abundant decapod crustaceans in estuaries and coastal waters of the northwestern Atlantic Ocean, though little is known about its population dynamics in polyhaline lagoons of the mid-Atlantic region. Seasonal and spatial patterns of abundance and distribution of C. septemspinosa were evaluated in relation to temperature, salinity, and dissolved oxygen in Maryland coastal bays (MCBs) using monthly data (April to October 1994 to 2012). We tested the hypothesis that temperature influences the occurrence and distribution of sand shrimp in the lagoons. A consistent pattern of high relative abundance of shrimp in spring and its scarcity in summer and early fall was observed. Shrimp abundance was highest in the northern bays and at sites closest to the Ocean City Inlet during April, but lowest at sites in the upper parts of Chincoteague Bay and MCBs tributaries. As mean temperature increased from April (12.2–17.1 oC) to June (21.8–26.7 oC), the relative abundance of the shrimp decreased substantially at most sites except at two sites where mean water temperature was comparatively low (21.8–23.3 oC). By July, when mean temperature was at its maximum (23.1–28.9 oC) in the bays, shrimp were rarely caught in trawls even in early fall in spite of the decline in temperature. It is likely that shrimp moved into nearshore waters with cooler temperature or suffered high mortality due to high temperature during this period. Generalized linear models suggest that temperature, and temperature and dissolved oxygen combined, were the most important abiotic factors examined that influenced the spatial distribution of C. septemspinosa in May and June, respectively. Considering their trophic importance, the spatio-temporal variations in the occurrence and abundance of the shrimp have implications for food web dynamics in the MCBs.

Tolerance of organisms towards heterogeneous and variable environments is highly related to physiological flexibility. An effective strategy to enhance physiological flexibility is the expression of polymorphic enzymes. This seems to be the case in the brown shrimp Crangon crangon. It shows high reproduction rates, feeds opportunistically on endo- and epibenthic organisms, and is apparently well adapted to variable environmental conditions. Previous electrophoretic studies revealed a high level of polymorphism and no consistent phenotype of digestive enzymes between individuals. In order to understand the underlying biochemical processes, we carried out a transcriptome-based study of digestive enzymes of C. crangon. Detailed sequence analyses of triacylglycerol lipase, phospholipase A2, alpha amylase, chitinase, trypsin and cathepsin L were performed to identify putative isoforms. The number of isoforms, and thus the degree of polymorphism varied among enzymes: lipases and carbohydrases showed higher numbers of isoforms in enzymes that besides their extracellular function also have diverse intracellular functions. Furthermore, cysteine proteinases showed a lower polymorphism than serine proteinases. We suggest that the expression of enzyme isoforms improves the efficiency of C. crangon in gaining energy from different food sources.

The anaesthetic isoeugenol has been used as metabolic suppressant for commercial transport of live lobsters in order to decrease energy expenditure and improve survival. Given the central role of mitochondria in metabolism and structural similarities of isoeugenol to the mitochondrial electron carrier coenzyme Q, we explored the influence on mitochondrial function of isoeugenol. Mitochondrial function was measured using high-resolution respirometry and saponin-permeabilised heart fibres from the Australasian red spiny lobster, Jasus edwardsii. Relative to vehicle (polysorbate), isoeugenol inhibited respiration supported by complex I (CI) and cytochrome c oxidase (CCO). While complex II (CII), which also reduces coenzyme Q, was largely unaffected by isoeugenol, respiration supported by CII when uncoupled was depressed. Titration of isoeugenol indicates that respiration through CI has a half-maximal inhibitory concentration (IC50) of 2.4±0.1 µmol l−1, and a full-maximal inhibitory concentration (IC100­) of approximately 6.3 µmol l−1. These concentrations are consistent with those used for transport and euthanasia of J. edwardsii and indicate that CI is a possible target of isoeugenol, like many other anaesthetics with quinone-like structures.

The brown shrimpCrangon crangonis a key component of the North Atlantic coastal food web and an important target species for the fishery economy. As the brown shrimp contains large amounts of protein and essential fatty acids, its consumption makes it a beneficial choice for humans. Commercially harvested crustaceans likeC. crangonare frequently affected by bacterial shell disease, with necrotizing erosions and ulcerations of the cuticle. To determine whether shell disease influences the nutritional value ofC. crangon, total protein and lipid contents, as well as fatty acid compositions of muscle tissue and hepatopancreas, together with the hepatosomatic index, were examined in healthy and affected individuals. The biochemical composition of the tissues did not differ significantly between the 2 groups. Also, the hepatosomatic index, as an indicator of energy reserves in shrimps, was similar between healthy and affected animals. Our results indicate that the nutritional value ofC. crangonis not affected by shell disease, as long as it remains superficial as in the present study.

The brown shrimp, Crangon crangon, is well adapted to the variable environmental conditions in the southern North Sea. It is very abundant, has high reproduction rates, and holds a key position in coastal ecosystems. This species has very low lipid deposits in the midgut gland, suggesting that the main function of the midgut gland is metabolic turnover rather than energy storage. Based on seasonal gene expression studies and established transcriptome data, we investigated key components of lipid metabolic pathways. Gene expression of triacylglycerol lipase, phospholipase, and fatty acid desaturase were analyzed and compared with that of other digestive enzymes involved in lipid, carbohydrate, and protein catabolism. Our results suggest that gene expression of digestive enzymes involved in lipid metabolism is modulated by the lipid content in the midgut gland and is related to food availability. Brown shrimp seem to be capable of using cellular phospholipids during periods of food paucity but high energetic (lipid) requirements. Two of three isoforms of fatty acid binding proteins (FABPs) from the midgut gland involved in fatty acid transport showed specific mutations of the binding site. We hypothesize that the mutations in FABPs and deficiencies in anabolic pathways limit lipid storage capacities in the midgut gland of C. crangon. In turn, food utilization, including lipid catabolism, has to be efficient to fulfill the energetic requirements of brown shrimp.

Metacrangon punctata Komai, 2012 (Fig. 4 C–E) Metacrangon punctata Komai, 2012: 17, figs. 5–7, 43 (type locality: Banda Sea, Indonesia, 1,058–1,084 m). Material examined. SJADES, stn CP 13, S of Java, 06°00.52′S, 104°49.41′E to 06°00.83′S, 104°49.43′E, 1,259–1,268 m, 26 March 2018, beam trawl, 1 ovigerous female (cl 12.9 mm), ZRC 2019.1873; stn CP 18, S of Java, 06°10.76′S, 105°05.59′E to 16°11.59′S, 105°05.74′E, 1,060–1,073 m, 26 March 2018, beam trawl, 1 male (cl 7.4 mm), 1 ovigerous female (cl 12.5 mm), ZRC 2019.1874. Colouration in life. Body generally whitish; carapace with tinge of purplish brown anterodorsally; pleon mottled with purplish brown markings at least on pleomeres 3–5, pleomere 6 semitransparent; cornea brownish, reflective; antennular and antennal peduncles purplish brown; pereopod 1 whitish, semitransparent; pereopods 4 and 5, pleopods and uropods generally purplish brown (Fig. 4 C–E). Distribution. Previously known from the Banda Sea (Indonesia), Papua New Guinea, Solomon Islands, and New Caledonia, at depths of 670–1,135 m. The present specimens came from the south of Java, Indonesia, at depths of 1,060 –1,268 m, extending the geographical range of the species to the eastern Indian Ocean. Remarks. As Komai (2012) argued, M. punctata can be assigned to the “ M. jacqueti ” species group, characterised by the greatly enlarged anterior middorsal spine on the carapace at least partially overhanging the rostrum, the possession of a ventral marginal tooth on each pleonal pleuron 1–3, and the marginally setose dactyli of the pereopods 4 and 5. The southern Java specimens agree well with the type material, particularly in the punctate branchial region of the carapace (Fig. 4 C–E), one of the characteristics of M. punctata., Published as part of Komai, Tomoyuki & Chan, Tin-Yam, 2020, New records of the crangonid shrimp genus Metacrangon Zarenkov, 1965 (Decapoda: Caridea), from the south of Java, eastern Indian Ocean, with description of a new species, pp. 326-333 in Raffles Bulletin of Zoology 68 on page 331, DOI: 10.26107/RBZ-2020-0026, http://zenodo.org/record/4577277, {"references":["Komai T (2012) A review of the western Pacific species of the crangonid genus Metacrangon Zarenkov, 1965 (Decapoda: Caridea), with descriptions of seven new species. Zootaxa, 3468: 1 - 77."]}

Metacrangon clevai Komai, 2012 (Figs. 3, 4B) Metacrangon clevai Komai, 2012: 34, figs. 16–18, 43 (type locality: Solomon Islands, 1,001–1,012 m). Material examined. 1 female (cl 7.4 mm), SJADES, stn DW 32, S of Java, 07°42.58′S, 107°34.54′E to 07°42.56′S, 107°35.93′E, 977– 805 m, 29 March 2018, dredge, ZRC 2019.1872. Colouration in life. Body generally maroon; cornea reflective; antennular and antennal peduncles also brownish; maxilliped 3 antepenultimate article brownish, distal two articles paler; pereopod 1 generally pale brown, darker at subdistal part of palm; pereopods 2–5 generally semitransparent, with tinge of brown on ischium and merus of pereopod 4. Pleopods also semitransparent with tinge of brown on protopods. Distribution. Previously only known from the Solomon Islands and Vanuatu, at depths of 777–1,040 m. Newly recorded from south of Java, Indonesia, at depths of 805– 977 m. Remarks. The present specimen from the south of Java generally agrees with the description of Metacrangon clevai in the following diagnostic features (see Komai, 2012): (1) the carapace has two middorsal spines, the anterior one located in an epigastric position; (2) there are no submedian spines on the gastric region of the carapace; and (3) the pleomeres 2–4 possess an obsolescent middorsal carina. Only minor differences are observed between this Java specimen and the type material: (1) the anterior middorsal spine on the carapace is relatively longer and narrower in the present specimen than in the type specimens (Fig. 3A; Komai, 2012: figs. 16B, 18A); and (2) the posterior middorsal spine arises slightly anterior to the midlength in the newly collected specimen (Fig. 3A), whereas in the type specimens, it rises at the midlength or slightly posterior to it (Komai, 2012: figs. 16B, 18A)., Published as part of Komai, Tomoyuki & Chan, Tin-Yam, 2020, New records of the crangonid shrimp genus Metacrangon Zarenkov, 1965 (Decapoda: Caridea), from the south of Java, eastern Indian Ocean, with description of a new species, pp. 326-333 in Raffles Bulletin of Zoology 68 on page 330, DOI: 10.26107/RBZ-2020-0026, http://zenodo.org/record/4577277, {"references":["Komai T (2012) A review of the western Pacific species of the crangonid genus Metacrangon Zarenkov, 1965 (Decapoda: Caridea), with descriptions of seven new species. Zootaxa, 3468: 1 - 77."]}

Pontocaris affinis affinis (Alcock, 1901) Material. 1 ovigerous female (ZUTC 6858), Bandar Abbas, Persian Gulf. General distribution. Indian Ocean Remarks. The single specimen was at the collection of ZUTC with only given sampling site, and no other information. As the ovigerous female shows simple fifth pereiopods, the subspecies of P. affinis affinis is allocated to it based on the species key provided by Chace (1984)., Published as part of Ashrafi, Hossein, Dehghani, Amir, Sari, Alireza & Naderloo, Reza, 2020, An updated checklist of caridean shrimps of the Persian Gulf and Gulf of Oman, pp. 521-534 in Zootaxa 4747 (3) on page 523, DOI: 10.11646/zootaxa.4747.3.6, http://zenodo.org/record/3696260, {"references":["Chace, F. A. Jr. (1984) The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition, 1907 - 1910, part 2: families Glyphocrangonidae and Crangonidae. Smithsonian Contributions to Zoology, 397, 1 - 63. https: // doi. org / 10.5479 / si. 00810282.397"]}

Komai, Tomoyuki, Chan, Tin-Yam (2020): New records of the crangonid shrimp genus Metacrangon Zarenkov, 1965 (Decapoda: Caridea), from the south of Java, eastern Indian Ocean, with description of a new species. Raffles Bulletin of Zoology 68: 326-333, DOI: 10.26107/RBZ-2020-0026