Abstract
The problem of cryptic species in Diacyclops bicuspidatus was examined using interpopulation crosses of four populations collected from a: (1) permanent flood lake in Kiev, Ukraine, (2) temporary pool in Kiev, (3) permanent pond in St. Petersburg, Russia (1200 km to north from Kiev) and (4) lake in Crimea (1100 km south of Kiev). The only interpopulation crosses to exhibit fertility were those between the St. Petersburg population and each of the two Kiev populations. The crosses between the Kiev and Crimea populations, between the St. Petersburg and Crimea populations, and between the two Kiev populations were sterile, as evidenced by either nonviable eggs, empty egg membranes or incomplete copulations. The F1 hybrids resulting from the St. Petersburg permanent pond X Kiev flood lake cross were fertile and produced mature F2 offspring. Some data on development times of parental and hybrid lines are presented. The St. Petersburg parental line showed development times almost twice as long as those of the Kiev flood lake population when reared at 10 °C and 20 °C in the laboratory. The F1 offspring of the cross between St. Petersburg females and Kiev floodlake males showed similar development times to females of the St. Petersburg parental lines at both temperatures. The F2 hybrids also showed development times that approximated those of the St. Petersburg parental line. These crossbreeding studies suggest the presence of cryptic species in the D. bicuspidatus inhabiting ecologically different populations in many parts of its large holarctic range.
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References
Alekseev, V. R., N. Y. Popov, 1986. About species independence of Diacyclops limnobius Kiefer, 1978–a new species for the fauna of USSR. Tr. Zool. Instit. AN USSR, 152: 106–115 (in Russian).
Bermans, B. & P. P.M. Janssen, 1988. Competition between the sibling species Tisbe holothuriae and T. battagliai (Harpacticoida). Hydrobiologia 167/168 (Dev. Hydrobiol. 47): 455–462.
Dussart, B. H., 1969. Copepodes des eaux continentales d'Europe occidentale. 2. Cyclopoides et biologie. Paris: Boubee: 294 pp.
Einsle, U., 1971. Einige Arten der Gattung Cyclops s.str. aus Jugoslawien. Fragm. balc. Mus. maced. sci. natur. 8: 61–74.
Einsle, U., 1975. Revision der Gattung Cyclops s.str., speciell der Abyssorum-Gruppe. Mem. Ist. ital. Idrobiol. 32: 57–219.
Einsle, U., 1994. Cyclops kikuchii SMIRNOV, 1932 (Copepoda, Cyclpoida), eine selbständige Art aus süddeutschen Gewässern. Crustaceana 66: 240–246.
Gurney, R., 1933. British freshwater Copepoda. The Ray Society, London: 384 pp.
Kiefer, F., 1978. Freilebende Copepoda. In Binnengewässer, 26: 343.
Kochina, E. M. & V. I. Monchenko, 1986. About species independence of Cyclops kikuchii (Crustacea, Cyclopidae). Vestnik zool. 20: 15–18 (in Russian).
Lowndes, A., 1928. The results of breeding experiments and other observations on Cyclops vernalis and Cyclops robustus G.O. Sars. Int. Rev. ges. Hydrobiol. Hydrogr. 21: 171–188.
Lowndes, A., 1932. The results of further breeding experiments on four species of Cyclops. Ann. Mag. nat. Hist. 10: 265–297.
Mayr, E., 1963. Animal species and evolution: i-iv. Belknap Press, Cambridge, Massachusetts: 1–797 (translated in Russian in 1965, Moscow, 'Mir').
Meliyan, I. V., 1968. On zooplancton of liman Sasyk (preliminary data) Uchen. Zap. Kishinev. Univ. 89: 105–115 (in Russian).
Monchenko, V. I., 1974, Gnathostome cyclopoids (Cyclopidae). Fauna Ukraini Series 27: 1–449 (in Ukrainian).
Monchenko, V. I. & T. I. Tavolzhanova, 1986. The conception of the biological species with application to Cyclopidae systematic. Z. Obsh. Biol. 37: 563–574 (in Russian).
Neubaur, R., 1913. Uber Beziehungen zwischen Cyclops fuscus (Jur.), Cyclops albidus (Jur.) und dem angenommenen Bastard Cyclops distinctus (Rich.). Zool. Jb., Syst. Okol. Geogr. Tiere. 34: 117–186.
Price, J. L., 1958. Cryptic speciation in the vernalis group of Cyclopoidae. Can. J. Zool. 36: 285–303.
Rylov, V. M., 1948. Cyclopoida of the fresh-water. Fauna of USSR. Crustacea 3: 1–318 (in Russian).
Schaefer, H., 1933. Unsere Kenntniss der Copepodenfauna des Brackwassers, nebst der Notizen ueber die Brackwasserfauna von Hiddensee. Int. Rev. ges. Hydrobiol. Hydrogr. 29: 264–273.
Sywula, T., 1966. Malzoraczki (Ostracoda) i widlonogi (Copepoda) z pobrzezy Zatoki Gdanskej. Przegl. zool. 10: 287–289 (in Poland).
Szlauer, L., 1959. Oserwacje nad przebgiem kopulacji u oczlika Cyclops kolensis Lilljeborg. Pols. Arch. Hydrobiol. 5: 101–109 (in Poland).
Szlauer, L., 1980. Rosmazanie widlonogow (Crustacea, Copepoda). Prz. zool. 24: 523–528 (in Poland).
Ulomsky, C. N., 1964. Plancton of the lake Turgoyak. Tr.Ural. otdel. VNIORKH. 6: 83–90 (in Russian).
Vaupel Klein, Von, 1998. Cases of niche-partitioning and of habitatsegregation in pelagic marine calanoids of the genus Euchirella (Crustacea: Copepoda). Zool. Verh. Leiden, 323: 383–400.
Walter, E., 1922. Ñber die Lebensdauer der freilebenden Suesswasser-cyclopiden. Fragen ihrer Biologie. Zool. Jahrb., Abt. Syst. 44: 375–420.
Wierzbicka, M., 1934. Le resultats du croisement de sertaines formes du groupe Cyclops strenuus (sensu lato). Mem. Acad. Polon. Sci., lett. Math. et natur. Ser. B. 3: 189–206.
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Monchenko, V.I. Cryptic species in Diacyclops bicuspidatus (Copepoda:Cyclopoida): evidence from crossbreeding studies. Hydrobiologia 417, 101–107 (2000). https://doi.org/10.1023/A:1003811606429
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DOI: https://doi.org/10.1023/A:1003811606429