On the feeding mechanism of the nauplius of Balanus perforatus Bruguière.

Range extension and reproduction of the barnacle Balanus perforatus in the eastern English Channel

“…For Torbay, Norris & Crisp (1953) mention that egg masses rarely occur before mid-June although Burrows (1988) observed Stage IV nauplii near Plymouth in early June 1984. At Naples, in the Mediterranean, brooding occurs in April (Lochhead, 1936), but becomes less common later in the season, suggesting that higher temperatures may limit production or there is insu⁄cient food. The samples taken from Lyme Regis in August 1996 had much higher proportions brooding than those translocated to Bembridge; similar to observations of 66% in North Devon by Barnes & Crisp (1956).…”

“…It is found in variable density on a wide range of hard substrata along wave-beaten shores and in ria-type estuaries (Norris & Crisp, 1953;Lewis, 1964). It is a southern species, occurring in the Mediterranean and along the eastern Atlantic seaboard from south-west Wales to West Africa, but has not been found in Ireland (Lochhead, 1936;Crisp & Southward, 1953). Earlier surveys in the English Channel reported the species as common in south-west England and along the coast of Brittany, with eastern limits approximately mid-Channel in the vicinity of the Isle of Wight on the English side, and Cherbourg on the French coast (Fischer-Piette, 1936;Crisp & Southward, 1958;Lewis, 1964;Stubbings & Houghton, 1964).…”

Methods of Identification of the Larvae of Balanus Balanoides (L.), B. Crenatus Brug. And Verruca Stroemia O. F. Müller

“…T4ere are two processes projecting posteriorly, one situated dorsally and the other ventrally. These processes have been named in various ways by various workers; the dorsal process has been termed the caudal spine (Groom, 1894;Nilsson-Cantell, 1921;Runnstrom, 1925;and Bassindale, 1936), the caudal process (Lochhead, 1936) or the carapace spine (Hoek, 1909); and the ventral process has been termed the spinous process (Groom, 1894), the ventral abdominal process (Hoek, 19°9;Nilsson-Cantell, 1921;and Runnstrom, 1925) or the caudal process (Bassindale, 1936;Lochhead, 1936). The term thoracico-abdominal process as used by Herz (1933) evidently applies both to the dorsal and to the ventral processes.…”

“…As well as these fuller accounts, a number of references are available which describe and figure some of the larval stages; these range from the more comprehensive accounts of Hoek (1909) and Nilsson-Cantell (1921), through shorter accounts in papers dealing more specifically with other topics (e.g. Runnstrom, 1925Runnstrom, , 1926Lochhead, 1936), to brief descriptions of unidentified material (e.g. Stubbings, 1940).…”

Seepocken der deutschen Küstengewässer

“…Sie dienen gleichermaBen der Fortbewegung (H/ipfschwimmen) wie der Nahrungsaufnahme. Lochhead (1936) unterscheidet lange, teilweise zart gefiederte Schwimmborsten, die die GhedmaBen ruderhlattartig verbreitern, und kiirzere, kr~iftig gefiederte Fangborsten. Letztere befinden sich nur auf den 2.…”