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Journal articles on the topic 'Crustacean ectosymbionts'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

GELDER, STUART R. "An ongoing saga: Endemic branchiobdellidans (Annelida: Clitellata) on translocated commercial North American crayfish." Zoosymposia 17, no. 1 (2020): 141–58. http://dx.doi.org/10.11646/zoosymposia.17.1.13.

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Over the last 130 years demand for crayfish has exceeded regional supplies around the world, so stocks, primarily from North America, have been imported to satisfy this need. These demands are human based and include gastronomy, sport fishing bait, food for rearing animals, educational aides, ornamentation in waterbodies, and more recently a significant increase in pet crayfish sales. The three most common commercial species from North America are Pacifastacus leniusculus, Procambarus clarkii and Orconectes limosus, although four other species are increasing in importance as they become more w

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Boancă, Filip, Claire Chauveau, Jean-François Flot, Maria Pop, and Sanda Iepure. "Identification of sulfur–oxidizing Thiothrix bacteria on microcrustaceans from the sulfidic groundwaters of Mangalia (southeastern Romania)." ARPHA Conference Abstracts 5 (July 14, 2022): e90001. https://doi.org/10.3897/aca.5.e90001.

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Movile Cave, located in southeastern Romania close to the Black Sea, is one of the most remarkable diversity hotspots worldwid with 52 species of invertebrates of which 37 are endemic (Brad et al. 2021). Due to the high concentration of hydrogen sulfide in its water, the primary production of organic matter in Movile Cave relies almost entirely on the chemoautotrophic activity of microorganisms, notably sulfur-oxidizing gammaproteobacteria belonging to the genus <em>Thiothrix</em>. In the presence of oxygen, these filamentous bacteria can oxidize hydrogen sulfide and reduce it into various sul

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3

Heirina, Anna, Sri Murtini, and Neksidin. "MOLECULAR IDENTIFICATION AND PHYLOGENETIC ANALYSES OF ECTOPARASITES AND ECTOSYMBIONTS THAT INFECT BLUE SWIMMING CRABS (PORTUNUS PELAGICUS)." Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan 22, no. 2 (2024): 204–15. https://doi.org/10.32663/ja.v22i2.4740.

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The decline in blue swimming crab populations can be caused by overfishing and several factors of the aquatic environment, such as anthropogenic pollution, water quality and the presence of ectoparasite in the crab. Molecular studies are essential to validate a particular species of ectoparasites and ectosymbionts that infect Crab. A total of 143 crabs were sampled from fishermen in Demak, Muara Gembong and Labuhan Maringgai. Six ectoparasite and ectosymbionts species, Chelonibia testudinaria (Crustacea), Dianajonesia tridens (Crustacea), Octolasmis angulata, O. warwicki (Crustacea), Ostrea pu

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4

Damborenea, Cristina, and Francisco Brusa. "A new species of Temnosewellia (Platyhelminthes, Temnocephalida) ectosymbiont on Villopotamon thaii (Crustacea, Decapoda, Potamidae) from Vietnam." Zoosystema 31, no. 2 (2009): 321–32. https://doi.org/10.5252/z2009n2a5.

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Damborenea, Cristina, Brusa, Francisco (2009): A new species of Temnosewellia (Platyhelminthes, Temnocephalida) ectosymbiont on Villopotamon thaii (Crustacea, Decapoda, Potamidae) from Vietnam. Zoosystema 31 (2): 321-332, DOI: 10.5252/z2009n2a5, URL: http://www.bioone.org/doi/abs/10.5252/z2009n2a5

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Seixas, Samantha A., Suzana B. Amato, José F.R. Amato, and Cristina Damborenea. "New species of Temnocephala (Platyhelminthes, Temnocephalidae) ectosymbiont on decapod crustaceans Aegla jarai (Aeglidae) from Brazil and Samastacus spinifrons (Parastacidae) from Chile." Zootaxa 5209, no. 1 (2022): 139–50. https://doi.org/10.11646/zootaxa.5209.1.8.

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Seixas, Samantha A., Amato, Suzana B., Amato, José F.R., Damborenea, Cristina (2022): New species of Temnocephala (Platyhelminthes, Temnocephalidae) ectosymbiont on decapod crustaceans Aegla jarai (Aeglidae) from Brazil and Samastacus spinifrons (Parastacidae) from Chile. Zootaxa 5209 (1): 139-150, DOI: 10.11646/zootaxa.5209.1.8

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Ohtaka, A., S.R. Gelder, M. Nishino, et al. "Distributions of two ectosymbionts, branchiobdellidans (Annelida: Clitellata) and scutariellids (Platyhelminthes: "Turbellaria": Temnocephalida), on atyid shrimp (Arthropoda: Crustacea) in southeast China." Journal of Natural History 46, no. 25-26 (2012): 1547–56. https://doi.org/10.1080/00222933.2012.692826.

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Ohtaka, A., Gelder, S.R., Nishino, M., Ikeda, M., Toyama, H., Cui, Y.-D., He, X.-B., Wang, H.-Z., Chen, R.-B., Wang, Z.-Y. (2012): Distributions of two ectosymbionts, branchiobdellidans (Annelida: Clitellata) and scutariellids (Platyhelminthes: "Turbellaria": Temnocephalida), on atyid shrimp (Arthropoda: Crustacea) in southeast China. Journal of Natural History 46 (25-26): 1547-1556, DOI: 10.1080/00222933.2012.692826, URL: http://dx.doi.org/10.1080/00222933.2012.692826

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7

Cannon, LRG, and JB Jennings. "Occurrence and nutritional relationships of four ectosymbiotes of the freshwater crayfish Cherax dispar Riek and Cherax punctatus Clark (Crustacea : Decapoda) in Queensland." Marine and Freshwater Research 38, no. 3 (1987): 419. http://dx.doi.org/10.1071/mf9870419.

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The occurrence and nutritional relationships of a suite of four ectosymbiotes from the freshwater crayfishes, C. dispar and C. punctatus in Queensland have been studied. The suite comprises the temnocephalid flatworms Temnocephala minor and Craspedella spenceri, the rhabdocoel flatworm Didymorchis cherapsis and the polychaete Stratiodrilus novaehollandiae. Occurrence of all four symbiotes appears to be independent of host species, host size and the presence of other members of the suite. As crayfish become scarcer in cooler, drier weather, worm numbers per host decline. The largest ectosymbiot

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8

Ložek, Filip, Jiří Patoka, and Martin Bláha. "Another hitchhiker exposed: Diceratocephala boschmai (Platyhelminthes: Temnocephalida) found associated with ornamental crayfish Cherax spp." Knowledge & Management of Aquatic Ecosystems, no. 422 (2021): 25. http://dx.doi.org/10.1051/kmae/2021023.

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There are known plenty tiny invertebrate species associated with decapod crustaceans. Our contribution documents the first record of New Guinean ornamental Cherax crayfish epibiont, Diceratocephala boschmai (Platyhelminthes: Temnocephalida) found in pet trade in the Czech Republic. Correct species assignment was confirmed by genetic barcoding. The pathway for introductions of organisms unintentionally moved in association with ornamental crayfish via the international trade has been highlighted. Although Cherax species survive in thermal waters in Europe, even potential introduction to these h

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9

Itani, Gyo, Makoto Kato, and Yoshihisa Shirayama. "Behaviour of the shrimp ectosymbionts, Peregrinamor ohshimai (Mollusca: Bivalvia) and Phyllodurus sp. (Crustacea: Isopoda) through host ecdyses." Journal of the Marine Biological Association of the United Kingdom 82, no. 1 (2002): 69–78. http://dx.doi.org/10.1017/s0025315402005180.

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The behaviour of two ectosymbiotic animals, Peregrinamor ohshimai (a bivalve attached to the ventral cephalothorax of the host), and Phyllodurus sp. (a bopyrid isopod attached to the second pleopod of the host), during ecdyses of the host thalassinidean Upogebia shrimps was studied by time-lapse video of infested shrimps. In the intermoult stages of the hosts, both ectosymbionts did not move. However they moved on to the newly emerged body of the host at the time when the host moulted. Peregrinamor ohshimai began to move just after the host started moulting, whereas Phyllodurus sp. moved prior

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WILLIAMS, BRONWYN W., and PATRICIA G. WEAVER. "A historical review of the taxonomy and classification of Entocytheridae (Crustacea: Ostracoda: Podocopida)." Zootaxa 4448, no. 1 (2018): 1. http://dx.doi.org/10.11646/zootaxa.4448.1.1.

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Ostracods of the family Entocytheridae are obligate ectosymbionts of other crustaceans, including crayfishes, isopods, amphipods, and a species of freshwater crab. Entocytheridae, with five subfamilies, 35 genera, and 213 currently accepted species, represents one the most diverse groups of extant freshwater ostracods. Here, we present the results of an extensive literature review, documenting the often complex historical taxonomic activity and resulting classification of Entocytheridae. This overview highlights inconsistencies, errors, and additional sources of confusion that have been inadve

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Boschetti, Matilde, Alessandro Culicchi, Monica Guerrini, Filippo Barbanera, and Giulio Petroni. "Preliminary data on the distribution, morphology and genetics of white-clawed crayfish and on their ectosymbionts in Lunigiana (Tuscany, Italy)." Knowledge & Management of Aquatic Ecosystems, no. 419 (2018): 25. http://dx.doi.org/10.1051/kmae/2018013.

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The white-clawed crayfish is a complex of species (Austropotamobius pallipes plus A. italicus, Crustacea) pivotal to riverine environments. Regrettably, it is endangered in many European countries due to a recent massive decline. We carried out a fine-scale survey on white-clawed crayfish distribution, morphology and genetics in an under-investigated region of central Italy (Lunigiana, Tuscany) to improve local knowledge and aid conservation management of the species. The torrential fauna of Lunigiana is scarcely known and habitat alterations due to the anthropic exploitation of the territory

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12

Brito-Fonseca, Vanessa, Carlos Alencar, Savio Moraes, Valéria Vale, and Fúlvio Freire. "New altitudinal distribution record and updated geographic distribution of the freshwater crab Trichodactylus fluviatilis Latreille, 1828 (Crustacea, Trichodactylidae)." Check List 14, no. 6 (2018): 977–84. http://dx.doi.org/10.15560/14.6.977.

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The freshwater crab Trichodactylus fluviatilis Latreille, 1828 is recorded here for the first time, at an altitude above 1000 m a.s.l. Sampling was performed in the Grota stream in Campos das Vertentes, Minas Gerais state, Brazil. This new record extends the known altitudinal distribution to 1115 m a.s.l., which significantly contributes to understanding the conditioning limits and factors for this species’ distribution. Moreover, the occurrence of an ectosymbiont platyhelminth of the genus Temnocephala is also reported on the crabs collected.

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Brito-Fonseca, Vanessa, Carlos Alencar, Savio Moraes, Valéria Vale, and Fúlvio Freire. "New altitudinal distribution record and updated geographic distribution of the freshwater crab Trichodactylus fluviatilis Latreille, 1828 (Crustacea, Trichodactylidae)." Check List 14, no. (6) (2018): 977–84. https://doi.org/10.15560/14.6.977.

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The freshwater crab <em>Trichodactylus fluviatilis</em> Latreille, 1828 is recorded here for the first time, at an altitude above 1000 m a.s.l. Sampling was performed in the Grota stream in Campos das Vertentes, Minas Gerais state, Brazil. This new record extends the known altitudinal distribution to 1115 m a.s.l., which significantly contributes to understanding the conditioning limits and factors for this species’ distribution. Moreover, the occurrence of an ectosymbiont platyhelminth of the genus <em>Temnocephala </em>is also reported on the crabs collected.

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14

Damborenea, Cristina, and Francisco Brusa. "A new species ofTemnosewellia(Platyhelminthes, Temnocephalida) ectosymbiont onVillopotamon thaii(Crustacea, Decapoda, Potamidae) from Vietnam." Zoosystema 31, no. 2 (2009): 321–32. http://dx.doi.org/10.5252/z2009n2a5.

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15

Gale, K. S. P., and H. C. Proctor. "Diets of two congeneric species of crayfish worm (Annelida: Clitellata: Branchiobdellidae) from western Canada." Canadian Journal of Zoology 89, no. 4 (2011): 289–96. http://dx.doi.org/10.1139/z11-003.

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Crayfish worms (Branchiobdellidae) are obligatory ectosymbionts of crustaceans, primarily crayfish. Little is known about their diets or ecology. A single crayfish can host several species and age classes of branchiobdellidans at one time, creating the potential for intra- and inter-specific competition. Coexistence of competitors can be promoted through dietary differences; therefore, we examined gut contents of Cambarincola chirocephalus Ellis, 1919 and Cambarincola vitreus Ellis, 1919, two species of branchiobdellidan occasionally found on the same host (the crayfish Orconectes virilis (Hag

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16

Amato, José F. R., Suzana B. Amato, and Samantha A. Seixas. "Temnocephala lutzi Monticelli (Platyhelminthes, Temnocephalida) ectosymbiont on two species of Trichodactylus Latreille (Crustacea, Decapoda, Trichodactylidae) from southern Brazil." Revista Brasileira de Zoologia 22, no. 4 (2005): 1085–94. http://dx.doi.org/10.1590/s0101-81752005000400038.

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Temnocephala lutzi Monticelli, 1913, ectosymbiont on brachyuran freshwater crabs of the genus Trichodactylus Latreille, 1828 is recorded for the first time in the State of Rio Grande do Sul, southern Brazil. Two hundred and seventy-nine crabs of two species were examined: 211 Trichodactylus panoplus (von Martens, 1869) and 68 Trichodactylus fluviatilis Latreille, 1828 of which 51 (24.17%) and 28 (41.17%) were positive for T. lutzi, respectively. Crabs of both species carried eggs fixed, exclusively, on the floor of the branchial chambers and/or on the lower side of the gills. Adult as well as

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Amato, José F. R., Suzana B. Amato, and Samantha A. Seixas. "A new species of Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectosymbiont on Trichodactylus fluviatilis Latreille (Crustacea, Decapoda, Trichodactylidae) from southern Brazil." Revista Brasileira de Zoologia 23, no. 3 (2006): 796–806. http://dx.doi.org/10.1590/s0101-81752006000300026.

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Temnocephala trapeziformis sp. nov., ectosymbiont on Trichodactylus fluviatilis Latreille, 1828 is described from the State of Rio Grande do Sul, southern Brazil. Sixty-eight crabs were examined, of which 61 (89.7 %) were positive for this species of the genus Temnocephala Blanchard, 1849. Eggs, as well as adult and young specimens, were found on the pleural areas of the carapace, in the orbital cavities, and, usually, on the fourth pair of pereiopods. The temnocephalans were always devoid of body pigmentation, although they kept the red eye pigment, undiluted in specimens fixed by hot (90ºC)

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Ohtaka, A., S. R. Gelder, M. Nishino, et al. "Distributions of two ectosymbionts, branchiobdellidans (Annelida: Clitellata) and scutariellids (Platyhelminthes: “Turbellaria”: Temnocephalida), on atyid shrimp (Arthropoda: Crustacea) in southeast China." Journal of Natural History 46, no. 25-26 (2012): 1547–56. http://dx.doi.org/10.1080/00222933.2012.692826.

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Amato, José Felipe Ribeiro, Suzana B. Amato, and Luiz Carlos Campos Daudt. "New species of Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectosymbiont on Aegla serrana Buckup & Rossi (Crustacea, Anomura) from southern Brazil." Revista Brasileira de Zoologia 20, no. 3 (2003): 493–500. http://dx.doi.org/10.1590/s0101-81752003000300021.

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SEIXAS, SAMANTHA A., SUZANA B. AMATO, JOSÉ F. R. AMATO, and CRISTINA DAMBORENEA. "New species of Temnocephala (Platyhelminthes, Temnocephalidae) ectosymbiont on decapod crustaceans Aegla jarai (Aeglidae) from Brazil and Samastacus spinifrons (Parastacidae) from Chile." Zootaxa 5209, no. 1 (2022): 139–50. http://dx.doi.org/10.11646/zootaxa.5209.1.8.

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A new Neotropical temnocephalan species is described from Aegla jarai Bond-Buckup & Buckup, 1994 from Santa Catarina, Brazil and recorded on Samastacus spinifrons (Philippi, 1882) from five locations (Región de Biobío, Región de la Araucanía, and Región de Los Lagos) in Chile. Temnocephala catarinensis sp. nov. differs from 10 other species of Temnocephala Blanchard, 1849 epibionts on Aeglidae Dana, 1852 and/or Parastacidae Huxley, 1879 by having the following combination of characters: 1. a long and slightly curved cirrus; 2. an introvert with two distinct portions, a proximal one with gr

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Lenis, Carolina, Freddy Ruiz, Carlos Muskus, Antonio Marcilla, and Imelda Vélez. "A new flatworm species of Temnocephala (Rhabdocoela, Temnocephalidae) ectosymbiont on the freshwater crab Valdivia serrata (Decapoda, Trichodactylidae) from Amazonas, Colombia." ZooKeys 918 (March 12, 2020): 1–14. https://doi.org/10.3897/zookeys.918.38201.

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A new species of temnocephalan is described from the branchial chambers of Valdivia serrata in Colombia as Temnocephala ivandarioi sp. nov. The most distinctive characters of the new species are in the cirrus and the epidermal 'excretory' syncytial plates. In the present study, the terminology to describe the cirrus of species of Temnocephala is updated. Comparison between the shape of the cirrus of the temnocephalans associated with trichodactylid crabs is also provided.

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Sewell, K. B., and I. D. Whittington. "A light microscope study of the attachment organs and their role in locomotion ofCraspedellasp. (Platyhelminthes: Rhabdocoela: Temnocephalidae), an ectosymbiont from the branchial chamber ofCherax quadricarinatus(Crustacea: Parastacidae) in Queensland, Australia." Journal of Natural History 29, no. 5 (1995): 1121–41. http://dx.doi.org/10.1080/00222939500770471.

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Landler, Lukas, James Skelton, Michael S. Painter, et al. "Ectosymbionts alter spontaneous responses to the Earth’s magnetic field in a crustacean." Scientific Reports 9, no. 1 (2019). http://dx.doi.org/10.1038/s41598-018-38404-7.

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Martins, Déborah Elena Galvão, Christopher B. Boyko, Israel Hidenburgo Aniceto Cintra, and Flavio de Almeida Alves-Júnior. "First report of the ectosymbiont Temnocephala sp. (Platyhelminthes: Rhabdocoela) on two Macrobrachium species (Decapoda: Caridea) from the Brazilian Amazon." Nauplius 33 (2025). https://doi.org/10.1590/2358-2936e20250542.

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Abstract In aquatic environments, the presence of biological relationships occurring in different levels of the trophic chain is widely observed and reported in the literature, especially for invertebrates using other organisms as temporary or definitive hosts. These relationships are types of symbiosis, classified as parasitism, mutualism, or commensalism. The last frequently occurs in Platyhelminthes, including the symbiotic flatworm genus Temnocephala Blanchard, 1849, that are observed living on aquatic invertebrates and vertebrates in Central and South America. However, despite an extensiv

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25

Boancă, Filip, Claire Chauveau, Jean-François Flot, Maria Pop, and Sanda Iepure. "Identification of sulfur–oxidizing Thiothrix bacteria on microcrustaceans from the sulfidic groundwaters of Mangalia (southeastern Romania)." ARPHA Conference Abstracts 5 (July 14, 2022). http://dx.doi.org/10.3897/aca.5.e90001.

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Movile Cave, located in southeastern Romania close to the Black Sea, is one of the most remarkable diversity hotspots worldwid with 52 species of invertebrates of which 37 are endemic (Brad et al. 2021). Due to the high concentration of hydrogen sulfide in its water, the primary production of organic matter in Movile Cave relies almost entirely on the chemoautotrophic activity of microorganisms, notably sulfur-oxidizing gammaproteobacteria belonging to the genus Thiothrix. In the presence of oxygen, these filamentous bacteria can oxidize hydrogen sulfide and reduce it into various sulfidic com

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26

Hayes, Floyd E., Sean T. Richards, Antonio I. Robles, Robert A. Gouveia, and Gillund G. Fayard. "The role of the length spines of echinoids in their association with crustacean and fish in Los Cabos, Baja California Sur, Mexico." Revista de Biología Tropical 70, no. 1 (2022). http://dx.doi.org/10.15517/rev.biol.trop..v70i1.49587.

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Introduction: Echinoids (sea urchins) provide shelter for a variety of facultative or obligatory ectosymbionts. Objective: To evaluate the hypothesis that decapods and fishes prefer to associate with echinoid individuals and species that have longer spines. Methods: We visually studied the frequency of decapod crustaceans and fishes associated with echinoids in shallow water (< 4 m) and deeper water (5-20 m) at Los Cabos, Baja California Sur, Mexico, during 1-6 January 2019. Results: We inspected 1 058 echinoids of six species. Five decapod species associated with three species of echinoids

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Corcino, Russel Christine B., Sheldon Rey Boco, Phuping Sucharitakul, et al. "Hitchhikers and anglers: novel ectosymbioses and predatory interactions with carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida) confirmed by citizen science and digital morphological analyses." Symbiosis, March 24, 2025. https://doi.org/10.1007/s13199-025-01045-2.

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Abstract Inter-species interactions with carybdeid cubomedusae (Cnidaria: Cubozoa) remain poorly understood for most members of this group. Given this knowledge disparity, we examined ectosymbiotic and predatory interactions with carybdeid cubomedusae using in situ and citizen science data. Photos of carybdeids with symbionts and prey in the Philippines were obtained from local scuba diver-photographers. These photos were authenticated using digital image analyses and cubozoan literature records. Here, only 18.8% (n = 6) of the recorded carybdeids engaged in ectosymbiosis with “hitchhikers” (i

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Creed, Robert P., Michael J. Thomas, April L. Meeks, and Bryan L. Brown. "Ectosymbionts improve host gill function in a freshwater cleaning symbiosis." Symbiosis, November 23, 2024. http://dx.doi.org/10.1007/s13199-024-01025-y.

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AbstractMutualisms are common interactions that involve a diverse array of taxa. An important aspect in the study of mutualisms is determining the mechanisms that underlie benefits in survival, growth and reproduction of the partner species involved. Crayfish are engaged in mutualisms with ectosymbiotic worms called branchiobdellidans. These worms benefit by using their crayfish hosts as safe habitat and sites for feeding and reproduction. Some of these worm species can improve crayfish survival and growth. We hypothesized that the worms influenced crayfish survival and growth by cleaning thei

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Seixas, Samantha Alves, Norton Dametto, and Eduardo Périco. "New species of Temnocephala (Platyhelminthes, Temnocephalida) ectosymbiont on vulnerable species of aeglids (Crustacea, Anomura) from the Neotropical Region." Biota Neotropica 18, no. 4 (2018). http://dx.doi.org/10.1590/1676-0611-bn-2017-0475.

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Abstract: A new species of the genus Temnocephala Blanchard, 1849 from southern Brazil was found on two species of anomuran crustaceans, Aegla spinipalma Bond-Buckup & Buckup, 1994 and Aegla grisella Bond-Buckup & Buckup, 1994, the latter classified as a vulnerable species by the "Lista de Referência da Fauna Ameaçada de Extinção no Rio Grande do Sul. Decreto no 41.672, de 11 junho de 2002". The crustaceans were collected from a tributary creek of the Forqueta river, Perau de Janeiro, Arvorezinha and a tributary creek of the Fão river, Pouso Novo, Rio Grande do Sul, Brazil; both locali

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