биота российских вод японского моря - Materials of Alexey Shipunov
биота российских вод японского моря - Materials of Alexey Shipunov
биота российских вод японского моря - Materials of Alexey Shipunov
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Main references: Manuilova, 1964; Mordukhai-Boltovskoi & Rivier, 1987;Rivier, 1998; Dumont, Negrea, 2002.Systematic partKEY TO MARINE FAMILIES OF THE CLADOCERA1(2). Shell oblong, with well-developed valves, not fused ventrally, covering 6 pairs <strong>of</strong>thoracic leaf-shaped limbs ....................................... I. Sididae Baird, 1850 (p. 11)2(1). Shell conical or oval, without valves, not covering 4 pairs <strong>of</strong> cylindrical thoraciclimbs .................................... II. Podonidae Mordukhai-Boltovskoi, 1968 (p. 14)Order CTENOPODA Sars, 1865I. Family SIDIDAE Baird, 1850Shell oblong, elongated, oval; valves cover body with all appendages. Head relativelylarge, distinctly separated from body. Antennules movable, with 9 (Sidinae) or 6(Peniliinae) estetascs, short in females, long and provided with long flagellum inmales. Swimming antennae well developed, long, robust, biramous; exopod with numerous(not less than 8) plumose setae, situated at apex, as well as on sides <strong>of</strong> segments.Body provided with 6 pairs <strong>of</strong> leaf-shaped thoracic limbs <strong>of</strong> similar arrangement;endopods <strong>of</strong> 5 anterior pairs armed with rows <strong>of</strong> long filtratory setae. Postabdomenelongated, smooth, or armed with spines or setae.Cladocerans <strong>of</strong> this family are filter feeders, eating microscopic algae, fine detritus,and bacteria. The family consists <strong>of</strong> two subfamilies. Members <strong>of</strong> one genus <strong>of</strong> thesubfamily Peniliinae Dana, 1849 inhabit marine waters.Subfamily Peniliinae Dana, 1849Female head ventrally with two rostral outgrowths. Antennule with 6 aestetascs.Adults with big dorsal organ. Both branches <strong>of</strong> swimming antenna 2-segmented.Brood pouch closed; parthenogenetic eggs with little yolk; maxillary glands rounded,without long bending nephridial canals. Rudimentary epipodites present only on thoraciclimbs 3 and 4. Postabdominal claws much longer than postabdomen itself.Genus Penilia Dana, 1849Type species: Penilia avirostris Dana, 1849.The diagnosis <strong>of</strong> the genus coincides with the diagnosis <strong>of</strong> the subfamily.The genus presumably consists <strong>of</strong> one species. Korovchinsky (2004) notes that P.avirostris has not yet been studied in detail over its wide geographical range and thereforeshould be regarded as a problematic taxon.11
Change language