https://doi.org/10.4081/jlimnol.2025.2209
First report of non-marine ostracods (Crustacea, Ostracoda) from the Dahlak Archipelago (Eritrea), with the description of two new species
Submitted: 14 November 2024
Accepted: 16 January 2025
Published: 10 February 2025
Accepted: 16 January 2025
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All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
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The information on Recent non-marine ostracod faunas of the north-eastern part of the Afrotropical region is still limited. Here we report the first record of ostracods from the Dahlak Archipelago, a group of small islands located in the southern part of the Red Sea off the Eritrean coast. Specimens were obtained by hatching in the laboratory of diapausing eggs occurring in dried mud collected in temporary freshwater ponds, following the so-called “Sars’ method”. A total of five species were found, including two species new to science, of which four belong to the family Cyprididae (Cypris galefensis, Plesiocypridopsis newtoni, Heterocypris sp., and Chrissia martensi n.sp.) and one to the family Ilyocyprididae (Ilyocypris dahlakensis n.sp.). A detailed description of the morphology of valves and soft parts is given, and COX1 sequences were obtained for four species. Cypris galefensis was so far only known for its type locality in Somalia with a population containing both males and females, whereas our samples consisted exclusively of females. Plesiocypridopsis newtoni, a species characterised by a wide geographic distribution and previously known to occur also in the Afrotropical region, shows marked variability in the prehensile palps of males, as evidenced by comparing the specimens from this study with descriptions available in the literature. The genus Heterocypris (with 15 species) and the genera of the two new species described here, Chrissia (with 17 species) and Ilyocypris (with four species), have been previously reported from this biogeographic region as well. The specimens analysed of Chrissia martensi n.sp. were all females, none of which had sperm inside the carapace, indicating the possibility of parthenogenetic reproduction in this species. A peculiar sexual dimorphism in the valve morphology characterises Ilyocypris dahlakensis n.sp., with females having a straight posterior margin, forming a right angle at the ventral anterior edge. Rehydration of dry sediments collected from arid areas where wet periods are short and often unpredictable has proven to be a successful method for describing aquatic invertebrate biodiversity.
Abell R, Thieme ML, Revenga C, Bryer M, Kottelat M, Bogutskaya N, et al. 2008. Freshwater ecoregions of the world: A new map of biogeographic units for freshwater biodiversity conservation. BioScience 58:403-414.
DOI: https://doi.org/10.1641/B580507
Al Shidi F, Victor R, 2022. The physical-chemical environment and benthic invertebrate assemblages of two thermal springs located on carbonate and ophiolite rocks in northern Oman. Int J Environ Stud 79:534-555.
DOI: https://doi.org/10.1080/00207233.2021.1911189
Angelucci A, Boni CF, Bono P, Caputo C, Carbone F, Ciancetti GF, et al. 1985. L'arcipelago delle Isole Dahlak nel Mar Rosso meridionale: alcune caratteristiche geologiche. Boll Soc Geogr Ital Ser. XI 2:233-262.
Beck HE, Zimmermann NE, McVicar TR, Vergopolan N, Berg A, Wood EF, 2018. Present and future Köppen-Geiger climate classification maps at 1-km resolution. Nat Scient Data 5:180214.
DOI: https://doi.org/10.1038/sdata.2018.214
Bird MS, Mlambo MC, Wasserman RJ, Dalu T, Holland AJ, Day JA, Brendonck L, 2019. Deeper knowledge of shallow waters: reviewing the invertebrate fauna of southern African temporary wetlands. Hydrobiologia 827:89-121.
DOI: https://doi.org/10.1007/s10750-018-3772-z
Cohen AS, 1986. Distribution and faunal associations of benthic invertebrates at Lake Turkana, Kenya. Hydrobiologia 141:179-197.
DOI: https://doi.org/10.1007/BF00014214
Colin JP, 2009. [Inventaire annoté des ostracodes actuels dulçaquicoles de Madagascar et remarques sur leur origine et leur biogéographie].[Article in French]. Bull Soc Linn Bordeaux 37:245-261.
Coulthard ND, 2001. Eritrea, p. 273-290. In: Fishpool LDC, Evans MI (eds.), Important bird areas in Africa and associated islands: Priority site for conservation. Birdlife Conservation, Pisces Publications, Cambridge.
Curtis BA, 1991. Freshwater macro-invertebrates of Namibia. Madoqua 2:163-187.
Danielopol DL, Betsch JM, 1980. Ostracodes terrestres de Madagascar: systématique, origine, adaptations. Rev Ecol Biol Sol 17:87-123.
De Marchi G, Chiozzi G, Semere D, 2009. Wings over the Red Sea. The birds of the Eritrean Islands. Natura 99:1-128.
De Moor FC, Day JA, 2013. Aquatic biodiversity in the mediterranean region of South Africa. Hydrobiologia 719:237-268.
DOI: https://doi.org/10.1007/s10750-013-1488-7
Edwards FJ, 1987. Climate and oceanography, pp. 45-69. In: Edwards AJ, Head SM (eds.), Key Environments: Red Sea.:Pergamon Press, Oxford.
DOI: https://doi.org/10.1016/B978-0-08-028873-4.50008-6
Ferreira VG, Higuti J, Martens K, 2023. On Pseudocypretta franki n. sp. (Ostracoda, Cyprididae) from Lake Sibaya, South Africa. Crustaceana 96:521-535.
DOI: https://doi.org/10.1163/15685403-bja10300
Folmer O, Black M, Hoeh W, Lutz R, Vrijenhoe, R, 1994. DNA primers for amplification of mitochondrial cytochrome c oxidase subunit 1 from diverse metazoan invertebrates. Mol Mar Biol Biotech 3:294-299.
Ghetti PF, 1970. The taxonomic significance of ostracod larval stages: with examples from the Burundi ricefields. Ital J Zool 37:103-120.
DOI: https://doi.org/10.1080/11250007009438670
Higuti J, Martens K, 2016. Invasive South American floating plants are a successful substrate for native Central African pleuston. Biol Invasions 18:1191-1201.
DOI: https://doi.org/10.1007/s10530-016-1061-1
Horne DJ, Cohen A, Martens K, 2002. Taxonomy, morphology and biology of Quaternary and living Ostracoda. Geoph Mon Series 131:5-36.
DOI: https://doi.org/10.1029/131GM02
Huang, HHM, Yasuhara M, Horne DJ, Perrier V, Smith AJ, Brandão SN, 2022. Ostracods in databases: State of the art, mobilization and future applications. Mar Micropaleontol 174:102094.
DOI: https://doi.org/10.1016/j.marmicro.2022.102094
International Commission of Zoological Nomenclature (ICZN), 2000. International code of zoological nomenclature, 4th edition. The International Trust for Zoological Nomenclature, c/o Natural History Museum, London. Accessed: July 16, 2024. Available from: https://code.iczn.org
Jacobs B, Martens K, 2022. An endemic species flock of Cypridopsinae (Crustacea, Ostracoda) from the ancient Lake Malawi (Africa), with the description of a new genus and three new species. Zootaxa 5100:301-348.
DOI: https://doi.org/10.11646/zootaxa.5100.3.1
Karanovic I, 2012. Recent freshwater ostracods of the world: Crustacea, Ostracoda, Podocopida. Springer, Dordrecht: 608 p.
DOI: https://doi.org/10.1007/978-3-642-21810-1
Karanovic I, 2019. Two new Pontocyprididae (Ostracoda) species from Korea. J Nat Hist 53:2801-2815.
DOI: https://doi.org/10.1080/00222933.2020.1752404
Karanovic I, Lee W, 2013. On the ostracod genus Ilyocypris, with description of one new species from Korea and the first report of males of I. bradyi (Crustacea: Ostracoda: Podocopida). P Biol Soc Wash 126:39-71.
DOI: https://doi.org/10.2988/0006-324X-126.1.39
Kardousha MM, 2016. First record of some aquatic fauna collected from Qatari Inland waters with reference to Arabian Peninsula. Int J Curr Res 8:32963-32969.
Kayo RT, Marmonier P, Togouet SHZ, Nola M, Piscart C, 2012. An annotated checklist of freshwater stygobiotic crustaceans of Africa and Madagascar. Crustaceana 85:1613-1631.
DOI: https://doi.org/10.1163/15685403-00003134
Kempf E, 1967. [Ilyocypris schwarzbachi n. sp. (Crustacea, Ostracoda) und ein vorläufiges Ostrakoden-Diagramm aus dem pleistozänen Löss von Kärlich (Neuwieder Becken)].[Article in German]. Sonderveröffentlichungen, Geologisches Institut der Universität zu Köln 13:65-79.
Kempf E, 1975. On Ilyocypris schwarzbachi Kempf. Stereo-Atlas Ostracod Shells 2:239-246.
Kempf E, 2011. Juxilyocypris gen. nov. and replacement names for homonym species or genera of Ostracoda (Arthropoda: crustacea). Munis Entomol Zool J 6:955-969.
Kibret T, Harrison AD, 1989. The benthic and weed-bed faunas of Lake Awasa (Rift Valley, Ethiopia). Hydrobiologia 174:1-15.
DOI: https://doi.org/10.1007/BF00006053
Kong Q, Karanovic I, Yu N, 2014. Phylogeny of the genus Chrissia (Ostracoda: Cyprididae) with description of a new species from China. J Crustacean Biol 34:782-794.
DOI: https://doi.org/10.1163/1937240X-00002276
Kvist S, Utevsky S, Marrone F, Ben Ahmed R, Gajda L, Grosser C, et al. 2022. Extensive sampling sheds light on species-level diversity in Palearctic Placobdella (Annelida: Clitellata: Glossiphoniiformes). Hydrobiologia 849:1239-1259.
DOI: https://doi.org/10.1007/s10750-021-04786-5
Maddocks R, 1982. Ostracoda, pp. 221-239. In: Abele LG (ed.), The biology of Crustacea: systematics, the fossil record, and biogeography. Academic Press, New York.
Marrone F, Alfonso G, Stoch F, Pieri V, Alonso M, Dretakis M, Naselli-Flores L, 2019. An account on the non-malacostracan crustacean fauna from the inland waters of Crete, Greece, with the synonymization of Arctodiaptomus piliger Brehm, 1955 with Arctodiaptomus alpinus (Imhof, 1885) (Copepoda: Calanoida). Limnetica 38:1-21.
DOI: https://doi.org/10.23818/limn.38.01
Martens K, 1982. On a small collection of freshwater ostracods (Crustacea Ostracoda) from Somalia, with a description of two new species. Monit Zool Ital 17:149-170.
DOI: https://doi.org/10.1080/03749444.1982.10736663
Martens K, 1984. Annotated checklist of non-marine ostracods (Ostracoda, Crustacea) from African inland waters. Zoologische dokumentatie van het koninklijk Museum voor Midden Afrika, Tervuren 20:1-51.
Martens K, 1985. Tanganyikacypridopsis gen. n. (Crustacea, Ostracoda) from Lake Tanganyika. Zool Scr 14:221-230.
DOI: https://doi.org/10.1111/j.1463-6409.1985.tb00192.x
Martens K, 1990. Taxonomic revision of African Cypridini. Part I: The genera Cypris O.F. Müller, Pseudocypris Daday and Globocypris Klie (Crustacea, Ostracoda). Bull K Belg Inst Nat Wet Biol 60:127-172.
Martens K, 1991. Description of the male of Sclerocypris tuberculata (Methuen, 1910) (Crustacea, Ostracoda, Megalocypridinae). Hydrobiologia 218:127-131.
DOI: https://doi.org/10.1007/BF00006785
Martens K, 1994. Ostracod speciation in ancient lakes: a review. In: Martens K, Goddeeris B, Coulter G (eds) Speciation in Ancient Lakes. Adv Limnol 44:203-222.
Martens K, 1997. Two new crenobiont ostracod genera (Crustacea, Ostracoda, Herpetocyprinidae) from Africa and Asia Minor, with the description of a new species from dolomitic springs in South Africa. S Afr J Sci 93:542-554.
Martens K, 1998. Diversity and endemicity of Recent non-marine ostracods (Crustacea, Ostracoda) from Africa and South America: a faunal comparison. Verh Int Ver Theo Angew Limnol 26:2093-2097.
DOI: https://doi.org/10.1080/03680770.1995.11901112
Martens K, 2007. On a new species and genus in the Cypridini (Crustacea, Ostracoda, Cyprididae) from South Africa, with a phylogenetic analysis of the tribe and a discussion on the genus concept in this group. J Nat Hist 41:381-399.
DOI: https://doi.org/10.1080/00222930601157183
Martens K, Davies BR, Baxter AJ, Meadows ME, 1996. A contribution to the taxonomy and ecology of the Ostracoda (Crustacea) from Verlorenvlei (Western Cape, South Africa). South Afr J Zool 31:23-36.
DOI: https://doi.org/10.1080/02541858.1996.11448392
Martens K, Schön I, Meisch C, Horne DJ, 2008. Global diversity of ostracods (Ostracoda, Crustacea) in freshwater. Hydrobiologia 595:185-193.
DOI: https://doi.org/10.1007/s10750-007-9245-4
Martens K, Schwartz SS, Meisch C, Blaustein L, 2002. Non-marine Ostracoda (Crustacea) of Mount Carmel (Israel), with taxonomic notes on Eucypridinae and circum-mediterranean Heterocypris. Isr J Zool 48:53-70.
DOI: https://doi.org/10.1092/BMTF-KFFG-076V-3M0J
Martens K, Tudorancea C, 1991. Seasonally and spatial distribution of the ostracods of Lake Zwai, Ethiopia (Crustacea: Ostracoda). Freshwater Biol 25:233-241.
DOI: https://doi.org/10.1111/j.1365-2427.1991.tb00488.x
Masi L, 1925. [Descrizione di tre nuovi Ostracodi Africani].[Article in Italian]. Ann Mus civ st nat Giacomo Doria 52:50-63.
Meisch C, 2000. Freshwater Ostracoda of Western and Central Europe. In: Schwoerbel J, Zwick P (eds.), Süßwasserfauna von Mitteleuropa 8/3. Spektrum Akademischer Verlag, Heidelberg: 522 pp.
Meisch C, Smith RJ, Martens K, 2024. An updated subjective global checklist of the extant non-marine Ostracoda (Crustacea). Eur J Taxon 974:1-144.
DOI: https://doi.org/10.5852/ejt.2024.974.2767
Mesquita-Joanes F., Rossetti G, Meisch C, 2024. Class Ostracoda, pp. 95-130. In: Maasri A, Thorp JH (eds.), Identification and ecology of freshwater arthropods in the Mediterranean Basin. Elsevier, Amsterdam.
DOI: https://doi.org/10.1016/B978-0-12-821844-0.00013-2
Mohammed MA, Keyser D, Al-Wosabi MA, Al-Khirbash B, Al-Qadassi WM, 2014. Taxonomy and distribution of fresh water Ostracoda from Socotra Island, Yemen. Rev Micropaléontol 57:23-33.
DOI: https://doi.org/10.1016/j.revmic.2013.10.001
Namiotko T, Danielopol DL, Baltanás A, 2011. Soft body morphology, dissection and slide-preparation of Ostracoda: a primer. Joannea Geol Paläont 11:327-343.
Namiotko T, de Moor FC, Barber-James HM, Schön I, Martens K, 2023. Environmental correlates of non-marine ostracod (Crustacea: Ostracoda) assemblages of the Eastern Cape (South Africa). Hydrobiologia 850:4859-4878.
DOI: https://doi.org/10.1007/s10750-023-05282-8
Nastasi P, 1994. Notes concerning climatic and floristic regions of Eritrea. Studi e Ricerche, Istituto Italo-Africano, Vol. 12, Rome.
Puri HS, Dickau BE, 1969. Use of normal pores in taxonomy of Ostracoda. Trans Gulf-Coast Ass Geol Soc 19:353-367.
Richterich P, 1998. Estimation of errors in “raw” DNA sequences: A validation study. Genome Res 8:251-259.
DOI: https://doi.org/10.1101/gr.8.3.251
Rossetti G, Bellavere E, Mazzini I, 2024. First record of males of Cypridopsis vidua (Crustacea, Ostracoda) species complex for Europe. J Limnol 83:2184.
DOI: https://doi.org/10.4081/jlimnol.2024.2184
Rumes B, Van der Meeren T, Martens K, Verschuren D, 2016. Distribution and community structure of Ostracoda (Crustacea) in shallow waterbodies of southern Kenya. Afr J Aquat Sci 41:377-387.
DOI: https://doi.org/10.2989/16085914.2016.1241174
Rüppel E, 1837. [Über Estheria dahalacensis Rüppel neue Gattung auis der Familie der Daphniden].[Article in German]. Abhandlungen Senckenberg Museum 2:117-128.
Saji A, Mischke S, Soorae PS, Ahmed S, Al Dhaheri S, 2018. The Al Wathba Wetland Reserve Lake in Abu Dhabi, United Arab Emirates and its ostracod (seed shrimp) fauna. Int J Aquat Biol 6:265-273.
Sars GO, 1885. On some Australian Cladocera, raised from dried mud. Forhandlinger i Videnskabs–Selskabet i Christiania 1885:1-46.
Savatenalinton S, 2023. On Chrissia muangkanensis, new species (Crustacea, Ostracoda) from Thailand, with notes on taxonomic characters of the genus. Raffles B Zool 71:443-456.
Scharf B, Meisch C, Külköylüoğlu, O, Yavuzatmaca M, 2020. Stenocypria fischeri (Lilljeborg, 1883), a poorly known freshwater ostracod (Crustacea, Ostracoda). Bull Soc Nat luxemb 122:217-238.
Schön I, Martens K, 2012. Molecular analyses of ostracod flocks from Lake Baikal and Lake Tanganyika. Hydrobiologia 682:91-110.
DOI: https://doi.org/10.1007/s10750-011-0935-6
Siveter DJ, Williams M, Waloszek D, 2001. A phosphatocopid crustacean with appendages from the Lower Cambrian. Science 293:479-481.
DOI: https://doi.org/10.1126/science.1061697
Smith AJ, Horne DJ, Martens K, Schön I, 2015. Class Ostracoda, pp. 757-780. In: Thorp JH, Covich AP (eds.), Thorp and Covich’s freshwater invertebrates, 4th edition, Vol. 1, Ecology and general biology. Academic Press, New York.
DOI: https://doi.org/10.1016/B978-0-12-385026-3.00030-9
Soesbergen M, 2018. A preliminary investigation of plankton organisms of fresh and brackish inland waters in the northern United Arab Emirates. Tribulus 26:46-58.
Szwarc A, Namiotko T, 2022. Biodiversity of non-marine Ostracoda (Crustacea) of Botswana: an annotated checklist with notes on distribution. Water (Basel) 14:1441.
DOI: https://doi.org/10.3390/w14091441
Szwarc A, Martens K, Namiotko T, 2021. Two new Cypridopsinae Kaufmann, 1900 (Crustacea, Ostracoda) from southern Africa. ZooKeys 1076:83.
DOI: https://doi.org/10.3897/zookeys.1076.76123
Szwarc A, Martens K, Meissner W, Namiotko T, 2023. Evidence for conductivity- and macroinvertebrate-driven segregation of ostracod assemblages in endorheic depression wetlands in North West Province of South Africa. Diversity (Basel) 15:614.
DOI: https://doi.org/10.3390/d15050614
Tamura K, Stecher G, Kumar S, Battistuzzi FU, 2021. MEGA11: Molecular evolutionary genetics analysis version 11. Mol Biol Evol 38:3022-3027.
DOI: https://doi.org/10.1093/molbev/msab120
Terracciano A, 1893. [Escursione botanica alla baia di Anfilah].[Article in German]. Boll Soc Geogr Ital Ser. III 4:279-294.
Van Damme K, Dumont HJ, 2010. Cladocera of the Lençóis Maranhenses (NE - Brazil): faunal composition and a reappraisal of Sars’ Method. Braz J Biol 70:755-779.
DOI: https://doi.org/10.1590/S1519-69842010000400008
Victor R, Al-Farsi AA, 2001. Water quality and invertebrate fauna of farm wells in an area affected by salinization in Oman. J Arid Environ 48:419-428.
DOI: https://doi.org/10.1006/jare.2000.0753
Victor R, Al-Mahrouqi AI, 1996. Physical, chemical and faunal characteristics of a perennial stream in arid northern Oman. J Arid Environ 34:465-476.
DOI: https://doi.org/10.1006/jare.1996.0125
Victor R, Victor JR, 2002. Zooplankton of an arid zone mountain reservoir in the Sultanate of Oman, Arabia. Verh Int Ver Theo Angew Limnol 28:507-512.
DOI: https://doi.org/10.1080/03680770.2001.11902635
Zhai D, Fan J, Wang M, 2023. Ostracods from the Kunming area of SW China, with description of two new species and male records of Cypridopsis vidua (O.F. Müller, 1776). Zootaxa 5323:183-215.
DOI: https://doi.org/10.11646/zootaxa.5323.2.2
Edited by
Diego Fontaneto, CNR-IRSA Water Research Institute, Verbania-Pallanza, ItalySupporting Agencies
“NextGenerationEU” of the European Union (D.M. 737/2021-CUP B79J21038330001), Società Zoologica La TorbieraHow to Cite
Rossetti, Giampaolo, Ilaria Mazzini, Giorgio Chiozzi, Luca Vecchioni, and Federico Marrone. 2025. “First Report of Non-Marine Ostracods (Crustacea, Ostracoda) from the Dahlak Archipelago (Eritrea), With the Description of Two New Species”. Journal of Limnology 84 (February). https://doi.org/10.4081/jlimnol.2025.2209.
Copyright (c) 2025 The Author(s)
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