Relevant bibliographies by topics / Pleopods

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  2. Dissertations / Theses
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  4. Conference papers

Academic literature on the topic 'Pleopods'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Pleopods"

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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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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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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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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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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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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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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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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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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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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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Dissertations / Theses on the topic "Pleopods"

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"Behavioral anti-predator defenses in the marine cladocerans Penilia avirostris, Pseudevadne tergestina and Pleopis polyphemoides in Tolo Harbour, Hong Kong." 2012. http://library.cuhk.edu.hk/record=b5549054.

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瞭解浮游動物與它們的捕食者之間的相互作用對指導我們瞭解浮游生物群體結構形成的過程以及整個生態系統的食物網結構有著重要的作用。浮游動物的捕食者對它們的進化產生影響，同時還塑造了它們複雜的行為，其中之一便是引起它們的反攝食防禦行為。改變形態結構，生活史各參數和行為運動方式是浮游動物採取的三類最主要的可誘導防禦策略。在情況多變、動態的海洋環境中，魚類通常是主要的捕食者，反攝食行為方式對浮游動物來說特別重要，因為其他兩類防禦模式主要對口裂寬度有限制的無脊椎捕食者較為有效。<br>海洋枝角類是一組廣泛分佈的小型甲殼類動物，它們時常成為浮游動物群體中重要的一部分，在海洋食物網中扮演重要的角色。本論文對香港吐露港海域海洋枝角類的反攝食防禦行為進行了全面的研究，包括晝夜垂直遷移，水準遷移，晝夜生殖和攝食節律。這些反攝食行為應隨著物種的不同及環境的不同而發生變化。考慮到鳥喙尖嘴溞、肥胖三角溞和多形圓囊溞三種物種不同生理的結構和攝食機制，將它們的反攝食防禦行為進行比較能夠檢驗一些關於外在和內在因素對反攝食行為形成影響的假設。此項研究第一個要檢驗的假設是仙達蚤科（鳥喙尖嘴溞）和圓囊溞科(肥胖三角溞和多形圓囊溞)身體結構上的不同會造成它們的反攝食行為多樣化。另一個假設是每個物種的反攝食行為的表現會受到環境條件的影響。<br>在吐露港對海洋枝角類的晝夜垂直和水準遷移行為的研究表明：鳥喙尖嘴溞並不進行晝夜垂直
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Book chapters on the topic "Pleopods"

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Schram, Frederick R., and Stefan Koenemann. "Bathynellacea." In Evolution and Phylogeny of Pancrustacea. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195365764.003.0023.

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In 1882, Bathynella natans was described, but the higher affinities presented problems. Calman offered that they were allied with an Australian shrimp, Anaspides, and placed both within superorder Syncarida, coequal with other eumalacostracan superorders. This was widely accepted until Serban placed Bathynella and allies into a separate superorder Podophallocarida. Recent cladistic analyses agree. Preferring groundwaters, aspects of their distribution clearly bear the marks of vicariance and indicate very ancient origins on Paleozoic paleocontinents. Either two or three families of bathynellac
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Schram, Frederick R., and Stefan Koenemann. "Procaridea." In Evolution and Phylogeny of Pancrustacea. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195365764.003.0037.

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Members of the infraorder Procaridea were at first located as a family of Caridea, then separated out as a sister group to the carideans, then placed back inside Caridea, and finally today currently sit as a distant sister group to Caridea. There are only six6 species known at present in two genera—certainly one of the smallest of pancrustacean groups. They brood their eggs on their pleopods, and so are good pleocyematans. What is distinctive about them is that they all occur on widely isolated islands. This could be a relict distribution from an ancient origin,. or perhaps these species might
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Schram, Frederick R., and Stefan Koenemann. "Aeschronectida." In Evolution and Phylogeny of Pancrustacea. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195365764.003.0022.

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Aeschronectida is a sister group of Stomatopoda within the cohort Hoplocarida, although it shares many apomorphies with the mantis shrimp. They have a shrimp-like habitus, moderate to large in size. The compound eyes were stalked and elevated on the anterior cephalon, with those of Kallidecthes richardsoni indicating dorsal and ventral lobes separated by a mid-band. Based on the hoplocarid features on the aeschronectidans (the enlarged pleon with gills on the pleopods, triflagellate antennules, an articulated rostrum over a probable cephalic kinesis, and thoracopods with three-article protopod
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Sfenthourakis, Spyros, Alan A. Myers, Stefano Taiti, and James K. Lowry. "Terrestrial Environments." In Evolution and Biogeography. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190637842.003.0014.

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Among crustaceans, only Amphipoda, Isopoda, and Decapoda have invaded truly terrestrial environments, but only two groups show full adaptations to live on land: the family Talitridae among the Amphipoda and the suborder Oniscidea among the Isopoda. The Talitridae occur primarily in forest leaf litter, but a number of other habitats, including caves, are recorded. Talitrids are important ecological contributors to the litter fauna, often occurring in high densities. Their adaptations to a terrestrial way of life include the retention of the mitten-shaped second gnathopods, a neotenic condition
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Rouse, Greg W., Fredrik Pleijel, and Tilic Ekin. "HISTRIOBDELLIDAE CLAUS AND MOQUIN-TANDON, 1884." In Annelida. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780199692309.003.0032.

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Histriobdellidae (‘Charlie Chaplin worms’) are tiny members of Annelida that live as commensals on a variety of Crustacea. There are currently 13 nominal species placed into Histriobdella, Steineridrilus, and Stratiodrilus, with most of them known from rivers of South America. The name Histriobdella can be loosely translated as ‘clown animal’ and the common name used here refers to the amusing way in which they crawl, which is reminiscent of the walk of the famous comic actor. Living Histriobdellidae are mostly transparent, lacking in chaetae, but distinguished by dark chitinous jaws. Males of
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"pleopod, n." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/8404856147.

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Schram, Frederick R., and Stefan Koenemann. "Stomatopoda." In Evolution and Phylogeny of Pancrustacea. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195365764.003.0021.

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Stomatopoda constitute the largest radiation in cohort Hoplocarida, with the living mantis shrimp, Unipeltata, and a series of “stem forms,” archaeo- and palaeostomatopods. They exhibit a long list of autapomorphies, of which the most important are a series of subchelate maxillipeds (the second modified as a “ballistic,” either a spearing or a crushing terminus) and an elongate pleon with gills on the bases of the pleopod exopods. They are obligate carnivores with murderous habits, and they have remarkable optic systems to assist in hunting. The Paleozoic fossils clearly reveal the evolution o
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Bagheri, Siamak, Mohammad Sayad Bourani, Azemat Dadai Ghandi, and Foong Swee Yeok. "Impact of Fish Cage Culture (Rainbow Trout, Oncorhynchus mykiss) on Zooplankton Structure in Iranian Water of the Caspian Sea." In Iconic Marine Vertebrates - Recent Advances, New Perspectives and Applications for ‎Conservation [Working Title]. IntechOpen, 2024. https://doi.org/10.5772/intechopen.1007414.

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The Caspian Sea has undergone tremendous changes due mainly to anthropogenic influences. From the 2013 record (January and April), studies were done in the southwestern Caspian Sea (off Jefrud), to gauge the impacts of fish cage culture on the zooplankton community. Scientists found a total of 12 species of zooplankton, belonging to 9 taxa at the study sites. As compared to the 1996–1997 records that marked a total of seven Copepode species at the same study area, only one species was recorded in 2013. The same applied to Cladocera, with only Pleopis polyphemoides documented in 2013. Acartia t
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Conference papers on the topic "Pleopods"

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Lou, Zhipeng, Nils Tack, Monica Wilhelmus, and Chengyu Li. "Hydrodynamics of Shrimp Swimming: Spread-Out Morphing of Pleopods in Power Stroke." In ASME 2024 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/imece2024-145569.

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Abstract Shrimps locomote through water using five pairs of appendages known as pleopods, which beat in a coordinated metachronal motion. Each pleopods consists of two membranous rami, a medial endopod and lateral exopod whose edges are lined with fine hair-like setae. Because of their close spacing and density, the setae act as an impermeable membrane. During swimming, each pleopod executes a power stroke, propelling water backward, followed by a recovery stroke to reset its position. During the power stroke, the exopods, endopods, and setae spread out, forming a propulsor with a larger area.
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Kwak, Bokeon, and Joonbum Bae. "Development of a Four-Bar Linkage Integrated with a Polypyrrole Actuator and a Resistive Sensor Toward Biomimetic Pleopods." In 2019 2nd IEEE International Conference on Soft Robotics (RoboSoft). IEEE, 2019. http://dx.doi.org/10.1109/robosoft.2019.8722770.

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