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Journal articles on the topic 'Pleopods'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Wittmann, Karl J., and Daniel Abed-Navandi. "Four new species of Heteromysis (Crustacea: Mysida) from public aquaria in Hawaii, Florida, and Western to Central Europe." European Journal of Taxonomy 735 (February 23, 2021): 133–75. http://dx.doi.org/10.5852/ejt.2021.735.1247.

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Four new species of the subgenus Heteromysis (Olivemysis) were detected in material from (sub)-tropical aquaria in six public aquarium institutions around the globe. Modifications of pleopods by spines represent the strongest structural complex used for differentiation within this subgenus: male pleopods 1–4 modified in H. smithsoniana sp. nov., male pleopods 2–4 plus female pleopod 2 in H. hornimani sp. nov. and H. waikikensis sp. nov. Additional important diagnostic characters are provided by the antennulae, uropods, and telson. The male of H. sixi sp. nov. represents a very rare case within

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2

Stamhuis, E. J., and J. J. Videler. "Burrow ventilation in the tube-dwelling shrimp Callianassa subterranea (Decapoda: thalassinidea). I. Morphology and motion of the pleopods, uropods and telson." Journal of Experimental Biology 201, no. 14 (1998): 2151–58. http://dx.doi.org/10.1242/jeb.201.14.2151.

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The morphology of the pleopods, uropods and telson of the tube-dwelling shrimp Callianassa subterranea have been studied using dissection microscopy and scanning electron microscopy. The kinematics of these appendages were examined by motion analysis of macro-video recordings of ventilating shrimps in transparent artificial burrows. The pleopods show the usual crustacean biramous anatomy, but all segments are rostro-caudally flattened. The protopodite bears a triangular medially oriented endopodite and a scoop-shaped exopodite. The contralateral endopodites are linked by the appendix interna,

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3

Stamhuis, E. J., and J. J. Videler. "Burrow ventilation in the tube-dwelling shimp Callianassa subterranea (Decapoda: thalassinidea). III. Hydrodynamic modelling and the energetics of pleopod pumping." Journal of Experimental Biology 201, no. 14 (1998): 2171–81. http://dx.doi.org/10.1242/jeb.201.14.2171.

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The process of flow generation with metachronally beating pleopods in a tubiform burrow was studied by designing a hydrodynamic model based on a thrust-drag force balance. The drag of the tube (including the shrimp) comprises components for accelerating the water into the tube entrance, for adjusting a parabolic velocity profile, for accelerating the flow into a constriction due to the shrimp's body and another constriction due to the extended tail-fan, for shear due to separation and for the viscous resistance of all tube parts. The thrust produced by the beating pleopods comprises components

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4

HOLLIDAY, CHARLES W. "Branchial Na+/K+-ATPase and Osmoregulation in the Isopod, Idotea Wosnesenskii." Journal of Experimental Biology 136, no. 1 (1988): 259–72. http://dx.doi.org/10.1242/jeb.136.1.259.

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Pleopod Na+/K+-ATPase enzyme specific activity (ESA) and osmoregulatory performance were measured in isopods acclimated for 12–14 days in 100%, 75%, 50% and 25% sea water (SW). The animal was 63–65 mosmol kg−1 hyperosmotic to the medium in 100% and 75% SW, 214 mosmol kg−1 hyperosmotic in 50% SW and 239 mosmol kg−1 hyperosmotic in 25% SW. The five pairs of pleopods are biramous but are not similar. The two anterior pairs do not stain with silver, have low and unchanging ESA, are smaller and more rigid than the three posterior pairs and are used for swimming. The posterior three pairs are thinne

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5

Ghia, Daniela, Simone Morabito, Gianluca Fea, Fabio Ercoli, and Roberto Sacchi. "A new alternative technique for sterilising invasive crayfish: removing female pleopods did not alter courtship pheromone release in signal crayfish." Knowledge & Management of Aquatic Ecosystems, no. 425 (2024): 16. http://dx.doi.org/10.1051/kmae/2024016.

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Invasive species require effective management, especially when population density is still low. Autocidal methods for controlling invasive species offer the advantages of being species-specific and inversely density dependent, without causing environmental changes. An ideal control technique should decrease numbers of juveniles, and, therefore, progressive population ageing. In crayfish, female pleopods can be removed to eliminate support for the attachment of newly fertilised eggs. The aim of this study was to investigate if pleopod removal affects the release of female sexual pheromones. An

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6

Gorissen, Sarsha, and David Sandeman. "Moult cycle staging in decapod crustaceans (Pleocyemata) and the Australian crayfish, Cherax destructor Clark, 1936 (Decapoda, Parastacidae)." Crustaceana 95, no. 2 (2022): 165–217. http://dx.doi.org/10.1163/15685403-bja10180.

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Abstract We tabulated decades of published moult stage criteria of Decapoda: Pleocyemata on setogenesis and changes in pleopods, uropods and gastroliths; and reviewed them focusing on the comparative biology of Cherax destructor. We found their staging criteria relatively consistent. For C. destructor, lacking were a comprehensive description with micrographs; a juvenile application; and, known stage duration. Therefore, we developed comprehensive moult staging techniques in juvenile C. destructor using pleopods, antennules and gastroliths. Using pleopod staging, we found C. destructor exhibit

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7

Kato, Naoko, and Tadashi Miyashita. "Sexual difference in modes of selection on the pleopods of crayfish (Decapoda: Astacoidea) revealed by the allometry of developmentally homologous traits." Canadian Journal of Zoology 81, no. 6 (2003): 971–78. http://dx.doi.org/10.1139/z03-083.

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Crayfish have five pairs of abdominal limbs called pleopods. In males, the first and second pairs of pleopods are used for transferring spermatophores to the female during copulation. The remaining pleopods in males have no obvious function. Female crayfish use their pleopods to carry eggs. Accordingly, it is expected that the selection pressures that act on the pleopods differ between males and females. To test this hypothesis, we estimated modes of selection on pleopods in two species of crayfish (Procambarus clarkii and Pacifastacus trowbridgii) by comparing allometric relationships in func

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8

Shenoy, Shakuntala, Ravindra Paul, and K. N. Sankolli. "Juvenile Morphology and Appearance of Sexual Appendages in Two Porcellanid Crabs, Petrolisthes Rufescens (Heller, 1861) and Pisidia Gordoni (Johnson, 1970) (Decapoda, Anomura, Porcellanidae)." Crustaceana 65, no. 3 (1993): 346–57. http://dx.doi.org/10.1163/156854093x00775.

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AbstractThe porcellanid crabs in their larval phase show typical anomuran features but develop a crab-like form from megalopa through the juvenile instars. However, the adult species characters are not yet noticeable in the juvenile phase thus leading to confusion in identity both at specific or even at generic level. With attainment of the crab-like form, the reproductive appendages, like male pleopods, show a brachyuran pattern. In absence of external sexual dimorphism, sex determination is difficult in this group. Very little information is available as to how and when the sexual appendages

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9

ALEXANDER, DAVID E. "Kinematics of Swimming in Two Species of Idotea (ISOPODA: Valvifera)." Journal of Experimental Biology 138, no. 1 (1988): 37–49. http://dx.doi.org/10.1242/jeb.138.1.37.

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Individuals of Idotea resecata and I. wosnesenskii were videotaped at 200 frames s−1. while swimming freely. Propulsion is provided by the first three pairs of abdominal appendages (pleopods), which may also function as gills. Unlike typical crustacean metachronal beating, in Idotea all three pairs of propulsive pleopods begin their recovery strokes simultaneously. Each pair then carries out its power stroke in sequence: third pleopods have a short power stroke, then second pleopods have an intermediate power stroke, finally first pleopods have a long power stroke. After these power strokes, t

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10

Turnbull, CT. "Pleopod cuticular morphology as an index of moult stage in the ornate Rock Lobster, Panulirus ornatus (Fabricius 1789)." Marine and Freshwater Research 40, no. 3 (1989): 285. http://dx.doi.org/10.1071/mf9890285.

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Seven discrete stages and substages of moulting in the ornate rock lobster, Panulirus ornatus, have been distinguished by microscopic examination of the cuticle and setae of the pleopods. The diagnostic features and the duration of each of the stages are described. Freezing did not visually alter the tissue features used to identify each moult stage. Pleopod morphology can reliably indicate whether a lobster has moulted within the previous 24 h or is within 72 h of the next ecdysis.

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11

Romimohtarto, Kasijan. "FIVE SPECIES OF MATUTA (CALAPPIDAE, BRACHYURA, DECAPODA) FROM INDONESIA." Marine Research in Indonesia 12 (December 14, 2008): 3–23. http://dx.doi.org/10.14203/mri.v12i0.338.

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Five species of Matuta from Indonesia i.e. lunaris, planipes, banksii, inermis and cuntispina are differentiated and grouped according to several important morphological characters. Each species is briefly described but extensively illustrated including the first and the second male pleopods. The first male pleopod of M. curtispina is quite different from the other four. The use of the structure of the stridulating organs as one of the important characters in classifying the species is emphasized and a new key is established.

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Nanri, Takahiro, Mayuko Fukushige, Jonathan P. Ubaldo, et al. "Occurrence of abnormal sexual dimorphic structures in the gonochoristic crustacean, Upogebia major (Thalassinidea: Decapoda), inhabiting mud tidal flats in Japan." Journal of the Marine Biological Association of the United Kingdom 91, no. 5 (2010): 1049–57. http://dx.doi.org/10.1017/s0025315410001712.

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Normal females of the mud shrimp, Upogebia major, have a pair of pleopods on the first abdominal segment, while normal males do not. We have investigated nine populations in the Seto-Inland Sea, Japan, and found morphological disorders on the first abdominal segments of both males and females. In males, the first pleopods occurred. Morphology and arrangement of these additional pleopods were classified into four types. The pleopods of Types M-1 and M-2 were similar in structure to those of normal females. These males could be considered as de-masculinized individuals, and the occurrence of mal

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13

KIM, SUNG HOON, JONG GUK KIM, and SEONG MYEONG YOON. "Description of two new janirid isopods (Isopoda, Asellota, Janiridae) from Korean waters." Zootaxa 5178, no. 6 (2022): 532–46. http://dx.doi.org/10.11646/zootaxa.5178.6.2.

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Two janirid isopods, Caecijaera ciliata sp. nov. and Janiralata truncata sp. nov., are reported from Korean waters in this study. Caecijaera ciliata sp. nov. differs from its congeners by the following features: pereonites 4–7 with large simple setae on the midline of the posterior tergite margins; the pleotelson is angled proximolaterally; the antennula is six-articled; the basis of pereopod Ⅶ is serrated superiorly; and the appendix masculina is not coiled. Janiralata truncata sp. nov. can be distinguished from its related species by the following characteristics: the lateral margin of the c

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14

BRUCE, NIEL L. "New sphaeromatids (Crustacea: Isopoda: Sphaeromatidea) from coastal and freshwater habitats in New Zealand." Zootaxa 1002, no. 1 (2005): 1. http://dx.doi.org/10.11646/zootaxa.1002.1.1.

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Exosphaeroma waitemata sp. nov. is described from the Waitamata Estuary, Auckland, northern North Island; it is characterised by the setose pereopods and body margins, setose uropod rami with distally acute exopods, and males with coxae 6 posteriorly extended and acute; the species is regarded as incertae sedis. A new genus and new species of Sphaeromatidae, Makarasphaera amnicosa gen. nov., sp. nov. is described from maritime freshwater streams and seeps from the Wellington and Wairarapa region of the southern North Island of New Zealand. The genus characterised by the thickened ventrolateral

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15

Araujo, Paula Beatriz, and Andreas Leistikow. "Philosciids with pleopodal lungs from Brazil, with description of a new species (Crustacea, Isopoda)." Contributions to Zoology 68, no. 2 (1999): 109–41. http://dx.doi.org/10.1163/18759866-06802004.

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Several species of “philosciid” Oniscidea are known from Brazil, most of them were found in the southern and eastern parts of this country. The genera Atlantoscia Ferrara & Taiti, 1981, Benthana Budde-Lund, 1908 and Balloniscus Budde-Lund, 1908, the latter considered to represent a separate family Balloniscidae Vandel, 1963, are considered the only neotropical philosciids bearing respiratory areas on their pleopods. Therefore, representatives of these genera are re-examined to shed new light on the question whether these species can be considered to be a monophylum with the autapomorphy “r

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SIDOROV, DMITRY A. "A new subgenus of eusirid amphipod (Crustacea: Amphipoda: Eusiridae) from subterranean waters and springs of the Eastern Sikhote-Alin Mountain Ridge, with comments on the morphology of sternal humps, genital papillae and pleopods." Zootaxa 2518, no. 1 (2010): 1. http://dx.doi.org/10.11646/zootaxa.2518.1.1.

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A new stygomorphic freshwater subgenus of Paramoera Miers, 1875, Ganigamoera subgen. nov., is described and compared with the four North Pacific subgenera and with allied Far Eastern representatives. The classsification of Ganigamoera subgen. nov. is based on two closely-related species: Paramoera (G.) myslenkovi sp. nov., from subterranean fresh waters of the Kievka River basin, and Paramoera (G.) tiunovi sp. nov., from a spring in the Solontsovaya River basin. The new species are identified by the presence of sternal humps, male genital papillae and modified pleopods 1–3. The second pleopod

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17

Thatcher, Vernon E., and Francinete T. Fonseca. "Cymothoa recifea sp. nov. (Isopoda, Cymothoidae) from the mouths of marine fishes of Pernambuco State, Brazil." Revista Brasileira de Zoologia 22, no. 3 (2005): 517–21. http://dx.doi.org/10.1590/s0101-81752005000300001.

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Cymothoa recifea sp. nov. (Isopoda, Cymothoidae) is described from the mouths of Centropomus undecimalis (Bloch, 1792) and Oligoplites palometa (Cuvier, 1832). The fish hosts were caught near Itamaracá and Cabo de Santo Agostinho, State of Pernambuco, Brazil. The new species bears a superficial resemblance to Cymothoa oestrum (Linnaeus, 1793) from which it differs in a number of important respects. In the new species, the basal carinae are large on pereopods 4-7 and usually pointed, whereas in C. oestrum the carinae are small on pereopods 4-6, large on 7 and not pointed. In the new species, on

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18

KARAMAN, IVO M., and MLADEN HORVATOVIĆ. "Mladenoniscus belavodae n. g., n. sp., a troglobitic oniscid (Isopoda: Oniscidea: Trichoniscidae) from Macedonia." Zootaxa 1687, no. 1 (2008): 60. http://dx.doi.org/10.11646/zootaxa.1687.1.4.

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Mladenoniscus belavodae n. g., n. sp., is described from the Bela Voda Cave in Demir Kapija gorge in southern Macedonia. It is characterized by specific combination of haplophthalmoid external body morphology features and the structure of male pleopods 1 and 2, which are similar to pleopods of species within some trichoniscinae genera. Based on this unique combination of characters a new monotypic genus Mladenoniscus n. g. was established. Validity of the current division of the family Trichoniscidae is questioned.

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MALYUTINA, MARINA V. "Microcope gen. nov.—a new deep-sea genus of Munnopsidae (Crustacea, Isopoda,Asellota), with description of two new species from the Southern Hemisphere." Zootaxa 1866, no. 1 (2008): 555. http://dx.doi.org/10.11646/zootaxa.1866.1.25.

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A new genus of Munnopsidae Lilljeborg, Microcope gen. nov., is described including Eurycope ovata Birstein, 1970 from the northwestern Pacific, and two new species, collected in the Cape Basin, and Atlantic Sector of the Southern Ocean. The new genus combines characters common for some genera of Eurycopinae Hansen and Betamorphinae Kussakin, but cannot be related to any known genus of the existing subfamilies and, thus, still remains incertae sedis. Microcope gen. nov. is characterized by minute eurycopine-like broad oval body with fused pereonites 5–7 on the one hand, and betamorpha-like face

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PREVORČNIK, SIMONA, and RODRIGO LOPES FERREIRA. "Brasileirinidae, a new isopod family (Crustacea: Isopoda) from the cave in Bahia (Brazil) with a discussion on its taxonomic position." Zootaxa 3452, no. 1 (2012): 47. http://dx.doi.org/10.11646/zootaxa.3452.1.2.

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The aquatic troglobiont Brasileirinho cavaticus (Crustacea: Isopoda: Calabozoidea), new genus and species is described from the karst cave of the State of Bahia, Brazil. Based on its unique pleonal features i.e. the total absence of female pleopods I–II, uniramous male pleopods I–II, minute, uniramous respiratory pleopods III–V in both sexes and pleotelson not exceeding 45% of the pleon length, a new family, Brasileirinidae, is created. Some biological, ecological and behavioral data for the species are provided together with the nature conservation issues. Additionally, an assignment of the n

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Komai, Tomoyuki, and Michel Segonzac. "A new genus and species of alvinocaridid shrimp (Crustacea: Decapoda: Caridea) from hydrothermal vents on the North Fiji and Lau Basins, south-western Pacific." Journal of the Marine Biological Association of the United Kingdom 84, no. 6 (2004): 1179–88. http://dx.doi.org/10.1017/s0025315404010628h.

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Nautilocaris saintlaurentae gen. nov., sp. nov., is described and illustrated from hydrothermal vents in the North Fiji Basin and Lau Basin in the south-western Pacific. This new taxon is assigned to the Alvinocarididae. It has a well-developed, dorsally dentate rostrum, carapace with pterygostomian spine present, eye broadly fused mesially, epipod–setobranch complex present above pereopods, and appendix internae on second to fourth pleopods greatly reduced. This combination of characters places it in an intermediate position between a group of species in the genus Alvinocaris with well develo

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AYÓN-PARENTE, MANUEL, and MICHEL E. HENDRICKX. "A new genus and new species of hermit crab (Crustacea: Anomura: Paguroidea: Diogenidae) from the eastern tropical Pacific." Zootaxa 2677, no. 1 (2010): 49. http://dx.doi.org/10.11646/zootaxa.2677.1.5.

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Tetralobistes gen. nov., a presently monotypic genus of hermit crab of the family Diogenidae, is described to accommodate a new species, Tetralobistes bicentenarius sp. nov. In many characters, Tetralobistes gen. nov. is similar to Areopaguristes Rahayu & McLaughlin, 2010, Paguristes Dana, 1851, and Pseudopaguristes Mclaughlin, 2002. However, it differs most significantly in the morphology of the male first pleopods and lacks male second and female first pleopods. The most conspicuous character separating Tetralobistes gen. nov. from the other three genera is the shape of the telson, with

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Bruce, Niel L. "Redescription of the overlooked crustacean isopod genus Xenuraega (Aegidae, Flabellifera)." Journal of the Marine Biological Association of the United Kingdom 73, no. 3 (1993): 617–25. http://dx.doi.org/10.1017/s0025315400033154.

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The genus Xenuraega Tattersall, 1909, has been overlooked for most of this century. The rediscovery of Xenuraega now brings the number of genera of Aegidae to six. The genus and the type species X. ptilocera Tattersall, 1909, are described in detail. Xenuraega is characterized by the following apomorphies: antennal flagellum extending beyond pleotelson; mandibular incisor absent, distal mandibular margin fused to cephalon; pleon abruptly narrower than pereon, pleotelson small, not concealing pleopods; uropod exopod reduced to short stub, endopod elongate, styliform, nearly as long as body; ple

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Murano, Masaaki, and John Mauchline. "DEEP-SEA MYSIDS FROM THE NORTH ATLANTIC OCEAN WITH DESCRIPTION OF FOUR NEW SPECIES." Crustaceana 72, no. 3 (1999): 273–95. http://dx.doi.org/10.1163/156854099503366.

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AbstractSeven species of Erythropini from the northeast Atlantic and one from the northwest Atlantic are dealt with. Four are described as new species, and three are new to science but remain unnamed because of mutilated condition. A known species Katerythrops oceanae, is described for the first time for the male pleopods and a revision of the diagnosis of the genus is presented. Five are pelagic species while three were obtained from the stomach contents of demersal fishes. Huit especes d'Erythropini de l'Atlantique sont traitees, dont sept du nord-est et une du nordouest de cet ocean. Quatre

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Kensley, Brian, and Austin B. Williams. "Axiopsis eximia, a new thalassinidean shrimp (Crustacea, Decapoda, Axiidae) from the Middle Eocene of South Carolina." Journal of Paleontology 64, no. 5 (1990): 798–802. http://dx.doi.org/10.1017/s0022336000018990.

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Axiopsis eximia, a new species of thalassinidean shrimp, is described from an exposure of the Middle Eocene Lower Warley Hill Formation of South Carolina, U.S.A. Fossil axiids are rare, but this unique specimen is remarkably preserved as quartz free of enveloping matrix, having a nearly complete though distorted carapace, proximal parts of most thoracic appendages in situ but with distal articles missing, and extended abdomen with segments almost complete except for a few missing appendages. Presence of the bases of pleopods 1 and the elongate eyestalks surpassing the rostral apex, which it sh

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Ainul-Mardhiah, S., Aziz Arshad, and Shozo Sawamoto. "A new species of the genus Siriella Dana, 1850 (Mysida, Mysidae) from an intertidal reef area in Malaysia." Crustaceana 92, no. 11-12 (2019): 1369–85. http://dx.doi.org/10.1163/15685403-00003908.

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Abstract A new species of the genus Siriella is described based on specimens collected from an intertidal reef area at Port Dickson, Malaysia. The species shows modified setae on both rami of both the third and fourth male pleopods and coiled pseudbranchial rami on the second to fourth male pleopods. These morphological characteristics indicate that the present species is a member of the pacifica-group of the genus Siriella. This is the first species of the group from Southeast Asian waters other than the species,”Siriella inornata Hansen?”, described by O. S. Tattersall (1960). The morphologi

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RAHAYU, DWI LISTYO, and PETER K. L. NG. "Two new species of Parasesarma De Man, 1895, from Southeast Asia (Crustacea: Decapoda: Brachyura: Sesarmidae)." Zootaxa 1980, no. 1 (2009): 29–40. http://dx.doi.org/10.11646/zootaxa.1980.1.3.

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Two new species of sesarmid crabs of the genus Parasesarma De Man, 1895, are described from mangrove forests in Southeast Asia. Parasesarma paucitorum n. sp. is described from northern Sulawesi and is allied to P. leptosoma (Hilgendorf, 1869) but differs from the latter in the form of its carapace, leg proportions, the structure of the tubercles on the cheliped dactylus, and the male first pleopods. Parasesarma raouli n. sp. is described from southern Peninsular Malaysia and is differentiated from the allied P. charis Rahayu & Ng, 2005, and P. anambas Yeo, Rahayu & Ng, 2004, by the num

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Stamhuis, E. J., and J. J. Videler. "Burrow ventilation in the tube-dwelling shrimp callianassa subterranea (Decapoda: thalassinidea). II. The flow in the vicinity of the shrimp and the energetic advantages of a laminar non-pulsating ventilation current." Journal of Experimental Biology 201, no. 14 (1998): 2159–70. http://dx.doi.org/10.1242/jeb.201.14.2159.

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The ventilation flow in the vicinity of the pleopod-pumping thalassinid shrimp Callianassa subterranea in an artificial transparent burrow has been mapped using particle image velocimetry. The flow in the tube in front of the shrimp was unidirectional, laminar and steady, with a parabolic cross-sectional velocity profile. The mean flow velocity was 2.0+/-0.1 mm s-1. The flow passed the thorax of the shrimp along the lateral and ventral sides. Ventral to the abdomen, the flow was dominated by the metachronally oscillating pleopods. The water around a pleopod is accelerated caudally and ventrall

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Hadfield, Kerry, Niel Bruce, and Nico Smit. "Review of the fish parasitic genus Ceratothoa Dana, 1852 (Crustacea, Isopoda, Cymothoidae) from South Africa, including the description of two new species." ZooKeys 400 (April 10, 2014): 1–42. https://doi.org/10.3897/zookeys.400.6878.

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The genus <i>Ceratothoa</i> Dana, 1852 is revised for South African waters and re-diagnosed. <i>Ceratothoa</i> <i>retusa </i>(Schioedte & Meinert, 1883) is recorded from the eastern coast, and <i>Ceratothoa africanae</i> sp. n. and <i>C.</i> <i>famosa</i> sp. n. are described; <i>C. imbricata </i>(Fabricius, 1775) and <i>C. trigonocephala </i>(Leach, 1818), are redescribed, revised and excluded from the South African fauna. <i>Ceratothoa africanae</i> sp. n. can be distinguished by the stout body shape of the female; triangular cephalon with a pointed rostrum; short uropods which do not ex

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McQuaid, N., R. P. Briggs, and D. Roberts. "Fecundity of Nephrops norvegicus from the Irish Sea." Journal of the Marine Biological Association of the United Kingdom 89, no. 6 (2009): 1181–88. http://dx.doi.org/10.1017/s0025315409000319.

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Potential fecundity, number of oocytes in the mature ovary, and realized fecundity, number of eggs extruded and attached to the pleopods of female Nephrops, caught at the start of the incubation period were estimated for females from the eastern and western Irish Sea grounds. Potential fecundity was found to differ significantly between eastern and western Irish Sea stocks, while realized fecundity did not differ between areas. Inter-year comparison of realized fecundity, and effective fecundity (the number of mature eggs on the pleopods of females at the end of the incubation period) in the w

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NARUSE, TOHRU, RYOKO SEGAWA, and SHIGEMITSU SHOKITA. "Amamiku, a new genus for the true freshwater crab, Candidiopotamon amamense Minei, 1973 (Decapoda: Brachyura: Potamidae), from the Central Ryukyu Islands, Japan." Zootaxa 653, no. 1 (2004): 1. http://dx.doi.org/10.11646/zootaxa.653.1.1.

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Amamiku, a new genus, is established for Candidiopotamon amamense Minei, 1973. Amamiku is morphologically most closely related to Candidiopotamon Bott, 1967, but they can be differentiated by their male first pleopods. A key to the genera of the Japanese true freshwater crabs is also provided.

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32

Sidorov, Dmitry A. "A new subgenus of eusirid amphipod (Crustacea: Amphipoda: Eusiridae) from subterranean waters and springs of the Eastern Sikhote-Alin Mountain Ridge, with comments on the morphology of sternal humps, genital papillae and pleopods." Zootaxa 2518 (December 31, 2010): 1–31. https://doi.org/10.5281/zenodo.196181.

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Sidorov, Dmitry A. (2010): A new subgenus of eusirid amphipod (Crustacea: Amphipoda: Eusiridae) from subterranean waters and springs of the Eastern Sikhote-Alin Mountain Ridge, with comments on the morphology of sternal humps, genital papillae and pleopods. Zootaxa 2518: 1-31, DOI: 10.5281/zenodo.196181

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33

AN, JIANMEI, RURU CHEN, and GUSTAV PAULAY. "Three new species of abdominal shrimp parasites (Crustacea: Isopoda: Bopyridae: Hemiarthrinae) from the Indo-West Pacific." Zootaxa 4845, no. 2 (2020): 264–74. http://dx.doi.org/10.11646/zootaxa.4845.2.7.

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Three new species of the parasitic isopod subfamily Hemiarthrinae Markham, 1972 are described. Allodiplophryxus unilateralis n. sp. is described from Western Australia, infesting the palaemonid shrimp Jocaste lucina (Nobili, 1901), and females differ from the only other species in the genus in possessing six pleomeres, an asymmetrical first oostegite and pleopods restricted to the short side of the body. Loki athanus n. sp. is described from Madagascar, infesting the alpheid shrimp Athanas parvus de Man, 1910, and females differ from the only other species in the genus in possessing well-devel

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34

STRECK, MORGANA TAIS, GIOVANNA MONTICELLI CARDOSO, STELLA GOMES RODRIGUES, DANIEL ANGELO SGANZERLA GRAICHEN, and DANIELA DA SILVA CASTIGLIONI. "Two new species of Hyalella (Crustacea, Amphipoda, Hyalellidae) from state of Rio Grande do Sul, Southern Brazil." Zootaxa 4337, no. 2 (2017): 263. http://dx.doi.org/10.11646/zootaxa.4337.2.5.

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There are 68 known species of Hyalella worldwide, with 23 occurring in Brazil. The state of Rio Grande do Sul, Southern Brazil, has the largest diversity of the genus in the country, with nine species recorded. The current study aimed to describe two new species of Hyalella from state of Rio Grande do Sul, both of them in the Northwest region of the state, one found in a small spring and another in an artificial pond. Hyalella georginae n. sp. presents several clusters of simple setae on antenna 2, maxilliped very slender, gnathopod 2 dactylus not reaching the lobe of propodus, pleopods rami w

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35

Ortiz, Manuel, María Teresa Herrera-Dorantes, and Pedro-Luis Ardisson. "A new species of the isopod genus Ancinus (Isopoda: Sphaeromatidae) from sandy beaches of the northern Yucatan Peninsula, Mexico." PLOS ONE 20, no. 4 (2025): e0321489. https://doi.org/10.1371/journal.pone.0321489.

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A new species of the sphaeromatid isopod genus Ancinus is described and illustrated. It comes from the Cinvestav Merida research project, Invertebrate Benthic Diversity of the Yucatan Intertidal and Shallow Subtidal Zones. This genus is easily recognized by having an oval and flattened body; in males, the first two pereonal appendages are subchelate, while in females, only the first one is subchelate, the pleotelson is triangular, and the first pleopods and uropods are uniramous. This new species of Ancinus differs from all others by body surface smooth and unpigmented; eyes not elevated; sutu

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WRIGHT, JONATHAN C., and MICHAEL J. O'DONNELL. "OSMOLALITY AND ELECTROLYTE COMPOSITION OF PLEON FLUID IN PORCELLIO SCABER (CRUSTACEA, ISOPQDA, ONISCIDEA): IMPLICATIONS FOR WATER VAPOUR ABSORPTION." Journal of Experimental Biology 164, no. 1 (1992): 189–203. http://dx.doi.org/10.1242/jeb.164.1.189.

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Active water vapour absorption in Porcellio scaber is associated with the endogenous production of strongly hyperosmotic fluid in the pleoventral chamber (pleoventralraum; PV). Pre-desiccated animals show increased pleon fluid secretion within 1–2 min of transfer to suprathreshold humidities (&gt;87 % relative humidity). The conspicuous increase in fluid volume is accompanied by a rise in osmolality from isosmotic (approximately 750mosmolkg−1) up to as much as 8.2osmolkg−1. Vapour absorption is marked by the onset of metachronal pleopodal ventilation and a subsequent decline in fluid osmol

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37

Bueno, Sérgio Luiz de Siqueira, Alexandre Lopes Camargo, and and Juliana Cristina Bertacini Moraes. "A new species of stygobitic aeglid from lentic subterranean waters in southeastern Brazil, with an unusual morphological trait: short pleopods in adult males." Nauplius 25 (June 22, 2017): 1–18. https://doi.org/10.1590/2358-2936e2017021.

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Bueno, Sérgio Luiz de Siqueira, Camargo, Alexandre Lopes, Moraes, and Juliana Cristina Bertacini (2017): A new species of stygobitic aeglid from lentic subterranean waters in southeastern Brazil, with an unusual morphological trait: short pleopods in adult males. Nauplius (e201700021) 25: 1-18, DOI: 10.1590/2358-2936e2017021, URL: https://doi.org/10.1590/2358-2936e2017021

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Montgomery, SS. "Sizes at first maturity and at onset of breeding in female Jasus verreauxi (Decapoda: Palinuridae) from New South Wales waters, Australia." Marine and Freshwater Research 43, no. 6 (1992): 1373. http://dx.doi.org/10.1071/mf9921373.

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Two criteria were used to investigate the size at which female eastern rock lobsters (Jasus verreauxi) off New South Wales attain maturity. These were the presence of well developed setae on, or the presence of eggs attached to, the pleopods. Females having well developed setae on the pleopods and/or carrying eggs were found only in catches from Coffs Harbour and Crowdy Head, the two most northern localities sampled. There were no significant differences in carapace length (CL) between size at first maturity (SOM) and size at onset of breeding (SOB) within or between areas sampled or when data

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MÜHLENHARDT-SIEGEL, UTE. "Phalloleucon abyssalis, a new cumacean genus and species (Crustacea: Peracarida: Leuconidae) from the Peru Basin." Zootaxa 1829, no. 1 (2008): 61. http://dx.doi.org/10.11646/zootaxa.1829.1.4.

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A new genus and species, Phalloleucon abyssalis, of the cumacean family Leuconidae from the Peru Basin is introduced. The new genus is characterised in having penial lobes and one pair of pleopods in males. It is suggested that the species Eudorella redacticruris Watling and McCann, 1997 is transfered into a new leuconid genus: Pseudeudorella.

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40

Geurge, R. W., and K. Carlberg. "Variation in the Male Pleopods of Panulirus Japonicus (Von Siebold, 1824)." Crustaceana 68, no. 7 (1995): 909–10. http://dx.doi.org/10.1163/156854095x01042.

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41

Carlberg, K., and R. W. Geurge. "Variation in the Male Pleopods of Panulirus Japonicus (Von Siebold, 1824)." Crustaceana 68, no. 8 (1995): 909–10. http://dx.doi.org/10.1163/156854095x02113.

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42

Alexander, David E., and Tao Chen. "The respiratory roles of swimming and nonswimming pleopods in isopod crustaceans." Comparative Biochemistry and Physiology Part A: Physiology 94, no. 4 (1989): 689–92. http://dx.doi.org/10.1016/0300-9629(89)90618-x.

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43

Galassi, Diana M.P., Niel L. Bruce, Barbara Fiasca, and Marie-José Dole-Olivier. "A new family Lepidocharontidae with description of Lepidocharon gen. n., from the Great Barrier Reef, Australia, and redefinition of the Microparasellidae (Isopoda, Asellota)." ZooKeys 594 (May 30, 2016): 11–50. https://doi.org/10.3897/zookeys.594.7539.

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Lepidocharontidae Galassi & Bruce, fam. n. is erected, containing Lepidocharon Galassi & Bruce, gen. n. and two genera transferred from the family Microparasellidae Karaman, 1934: Microcharon Karaman, 1934 and Janinella Albuquerque, Boulanouar & Coineau, 2014. The genus Angeliera Chappuis & Delamare Deboutteville, 1952 is placed as genus incertae sedis in this family. The Lepidocharontidae is characterised by having rectangular or trapezoidal somites in dorsal view, a single free pleonite, a tendency to reduction of the coxal plates, and the unique uropodal morphology of a larg

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44

C. Nandanpawar, Priyanka, Mohd Ashraf Rather, Mohan Ramesh Badhe, and Rupam Sharma. "Assessment of DNA Damage During Gene Delivery in Freshwater Prawn by Chitosan Reduced Gold Nanoparticles." Biosciences, Biotechnology Research Asia 15, no. 1 (2018): 39–49. http://dx.doi.org/10.13005/bbra/2606.

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The increasing application of nanoparticles both in industries and in agricultural fields has led to its accumulation in the aquatic ecosystem through water run-off. Insights into the validity of safer nanoparticles such as gold and chitosan are fairly established. However, its effect on aquatic invertebrates has been less studied. The present study was aimed to study effects of chitosan reduced gold nanoparticles (CRGNPs) during green fluorescent protein (GFP) encoding plasmid delivery in giant freshwater prawn, macrobrachium rosenbergii. The mean particle size and zeta potential CRGNPs was 3

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45

COLEMAN, CHARLES OLIVER. "Bogidiellidae." Zootaxa 2260, no. 1 (2009): 279–84. http://dx.doi.org/10.11646/zootaxa.2260.1.10.

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The new amphipod species Xystriogidiella juliani from the Great Barrier Reef is described. Characteristics for this species are the 2-articulate accessory flagellum, a short second article of the maxilla 1 palp, the lack of inner rami on the pleopods and a short, emarginate telson. A short description of Xystriogidiella capricornea, a second species occurring in the Great Barrier Reef, is given additionally.

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46

Beatty, Stephen J., David L. Morgan, and Howard S. Gill. "Reproductive biology of the large freshwater crayfish Cherax cainii in south-western Australia." Marine and Freshwater Research 54, no. 5 (2003): 597. http://dx.doi.org/10.1071/mf02077.

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The reproductive biology of Cherax cainii was studied in an impoundment dam in south-western Australia using histological examination of ovarian development (previous studies describing the reproductive biology of freshwater crayfish have relied solely on macroscopic descriptions of gonadal development). Spawning occurred between August and November and peaked in late August and September, with the percentage of berried females increasing from 50% in September to 96% in November before declining to 11% in December. Juveniles were released from berried females between late November and early De

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47

Faria, Fabíola, Christopher Boyko, and Fernando Mantelatto. "Parasitization of the white spotwrist hermit crab, Pagurus criniticornis (Dana, 1852) (Decapoda, Anomura), by the rhizocephalan barnacle Peltogasterella socialis (Müller, 1863) (Cirripedia, Rhizocephala) from southeastern Brazil." Animal Biology 57, no. 3 (2007): 315–27. http://dx.doi.org/10.1163/157075607781753047.

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AbstractHermit crabs of the species Pagurus criniticornis (Dana, 1852) parasitized by the poorly known colonial rhizocephalan Peltogasterella socialis (Müller, 1863), were collected in the infralittoral rocky/sandy area of Anchieta Island (São Paulo), Brazil. We report the presence and pattern of occurrence of this rhizocephalan in the P. criniticornis population. The hermit crabs were obtained monthly during 1999 by two people using SCUBA methods. A total of 992 hermit crabs were captured and examined for rhizocephalans. The studied population showed non-normal size distribution and only 2.11

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48

Shy, J. Y., and Peter K. L. Ng. "On Two New Species of Geothelphusa Stimpson, 1858 (Decapoda, Brachyura, Potamidae) From the Ryukyu Islands, Japan." Crustaceana 71, no. 7 (1998): 778–84. http://dx.doi.org/10.1163/156854098x00031.

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AbstractTwo new species of potamid freshwater crabs of the genus Geothelphusa are described from the Ryukyu Islands in southern Japan. Although both G. shokitai sp. nov. and G. minei sp. nov. are allied to G. candidiensis (type locality Taiwan), they differ from that species and from each other in the form of their carapaces, ambulatory leg proportions, and structure of their male first pleopods.

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MENDOZA, JOSE CHRISTOPHER E., and SUVARNA S. DEVI. "A new species of the swimming crab genus, Laleonectes Manning & Chace, 1990 (Crustacea: Brachyura: Portunidae), from the western Indian Ocean." Zootaxa 4323, no. 2 (2017): 219. http://dx.doi.org/10.11646/zootaxa.4323.2.5.

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A new species of swimming crab, Laleonectes kuriya, is described from the western Indian Ocean (Réunion and southwestern India). The new species is morphologically most similar to the Pacific species, L. nipponensis (Sakai, 1938), but differs primarily in the relative length of the ambulatory legs, as well as in the shape of the malesixth pleomere and the form of the first and second male pleopods.

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50

Alexander, David E., Jeffrey Blodig, and Shiu-Yie Hsieh. "Relationship between Function and Mechanical Properties of the Pleopods of Isopod Crustaceans." Invertebrate Biology 114, no. 2 (1995): 169. http://dx.doi.org/10.2307/3226889.

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