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Bryozoans of the Expeditions of the Pourquoi Pas? in the English Channel and Around the British Isles Between 1914 and 1930

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Bryozoans of the Expeditions of the Pourquoi Pas? in the English Channel and Around the British Isles Between 1914 and 1930 Cah. Biol. Mar. (2007) 48 : 361-372 Bryozoans of the expeditions of the Pourquoi Pas? in the English Channel and around the British Isles between 1914 and 1930 Javier SOUTO, Eugenio FERNÁNDEZ-PULPEIRO* and Oscar REVERTER-GIL Departamento de Bioloxía Animal, Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain *Corresponding author: E-Mail: [email protected]. Fax: 981596904 Abstract: A revision was carried out of bryozoan specimens collected between 1914 and 1930 by the French research vessel Pourquoi Pas? in the English Channel and around the British Isles, and stored in the Muséum National d´Histoire Naturelle in Paris. A total of 87 species was identified, of which 15 belong to the order Cyclostomata and 72 to the order Cheilostomata. Morphological and biological data are provided for four species as some taxonomic comments for another four species. Two new species, Escharella cryptooecium sp. nov. and Escharella pseudopunctata sp. nov., are described. It is further proposed that species of the genus Haywardipora Soule, Soule & Chaney, 1996 be reclassified in the genera Escharella Gray, 1848 and Elleschara Gordon, 1984. Résumé : Bryozoaires des expéditions du Pourquoi Pas ? en Manche et autour des Iles Britanniques entre 1914 et 1930. Ce travail est consacré à la révision des spécimens de bryozoaires récoltés entre 1914 et 1930 par le navire océanographique français Pourquoi Pas? en Manche et autour des îles Britanniques, conservés dans les collections du Muséum National d´Histoire Naturelle de Paris. Au total, 87 espèces ont été identifiées, 15 appartenant au l’ordre des Cyclostomata et 72 à l’ordre des Cheilostomata. Des renseignements morphologiques et biologiques sont fournis pour 4 espèces ainsi que des commentaires taxonomiques pour 4 autres. Deux espèces nouvelles, Escharella cryptooecium sp. nov. et Escharella pseudopunctata sp. nov., sont décrites. On propose également que les espèces du genre Haywardipora Soule, Soule & Chaney, 1996 soient inclues dans le genre Escharella Gray, 1848 et Elleschara Gordon, 1984. Keywords: Bryozoa l Escharella l Haywardipora l Elleschara l New species l NE Atlantic Introduction command of Jean-Baptiste Charcot. The ship sank in 1936, during a research survey on the coast of Iceland. The French research vessel Pourquoi Pas? conducted During the surveys, oceanographic, topographic and several surveys in different areas of the world (Antarctic, meteorological data were collected, as well as samples of Artic, Mediterranean Sea and Northeast Atlantic) under the flora and fauna. The faunal material was deposited in the Muséum National d´Histoire Naturelle in Paris, and parts of it have been studied by different authors. Specifically, the Reçu le 4 mai 2007 ; accepté après révision le 14 novembre 2007. Antarctic bryozoan specimens collected between 1903 and Received 4 May 2007; accepted in revised form 14 November 2007. 1905 were studied by L. Calvet (1909), and those collected 362 BRYOZOANS OF THE POURQUOI PAS? 1914-1930 in Arctic waters were recently studied by d´Hondt & except for two stored in alcohol. A total of 147 samples Mascarell (2004). Material collected on the second were examined, 43 of which were not included in our study Antarctic survey (1908-1910) has not yet been studied. At because of insufficient data regarding their origin or least part of the material collected from the Mediterranean because they were Antarctic species (Beania erecta Waters, Sea has been lost; it was loaned by Jean-Baptiste Charcot to 1904; Celleporella antarctica Moyano & Gordon, 1980; Marcel Prenant for examination and was not found after the Inversiula nutrix Jullien, 1909; Isoschizoporella tricuspis death of the latter. (Calvet, 1909); Reteporella hippocrepis (Waters, 1904); Cellarinella sp.; Fasciculipora sp.). D´Hondt & Mascarell Material and Methods (2004) also encountered this problem when examining Arctic material from the Pourquoi Pas?. Ultimately, 104 clearly labelled samples were examined. The label of each In the present study, we examined some of the samples indicated the station at which the sample was collected, and collected by the Pourquoi Pas? in the Northeast Atlantic, in some cases the coordinates and the depth. All of the prior specifically in the Bay of Biscay, English Channel and labelled identifications were checked, and all of the around the British Isles. The samples were deposited in the colonies present in the samples were identified. Muséum National d’Histoire Naturelle in Paris, and Specimens were identified with a binocular microscope correspond to 24 sampling stations, the locations and (Nikon SMZ10 or Wild M8). Some uncoated samples were coordinates of which are indicated in Table 1, along with examined and photographed in a variable-pressure the depth and date of sampling. scanning electron microscope (LEO 435VP). All of the samples were available as dried specimens, Table 1. Location of the sampling sites. Tableau 1. Localisation des sites d’échantillonnage. Station Samples Latitude N Longitude W Deep Date (m) 1 9914 51º37’12’’ 013º13’48’’ 1920 1 (5) 9808, 9812 57º38’48’’ 013º36’00’’ 90 29-juin-21 6 9843, 9844, 9845, 9846, 9849, 9850, 9852, 9856 49º48’00’’ 001º42’00’’ 60 2-oct-30 7 9851, 9855 49º28’48’’ 002º45’36’’ 65 3-oct-30 9 6326 47º47’24’’ 004º02’24’’ 32 30-aoû-21 11 18718 48º49’48’’ 001º47’24’’ 20 25-sep-29 15 18710, 18711 48º43’48’’ 001º45’00’’ 25 26-sep-29 16 18708 48º42’36’’ 001º42’36’’ 20 29-sep-29 17 4231, 4232, 4233, 4234, 4235, 4236, 4238, 4239, 5474, 48º37’12’’ 002º25’00’’ 50 28-sep-29 18692, 18695, 18696, 18697, 18698, 18712, 18719, 18720 18 4184, 4185, 4186, 4187, 4188, 4189, 4190, 4191, 4192, 4193, 48º50’24’’ 002º19’12’’ 110 29-sep-29 4194,4195, 4196, 4197, 4198, 4199, 4200, 4201, 4202, 4203, 4205, 4206, 4208, 4209, 4210, 4211, 4212, 4213, 4214, 4215, 4216, 4217, 4218, 4219, 4220, 4221, 4222, 4223, 4224, 4225, 4227, 4228, 4229, 4230, 18702 20 9907 English Channel 80 1924 26 4244, 7677 English Channel 29 9951 English Channel 30 4242 Atlantic and E. Channel 1920 43 9912 English Channel 1921 76 4245 English Channel 101 13633 English Channel 1-juin-14 108 13632 English Channel 27-juin-14 201 9810, 9817, 9818 57º31’48’’ 013º36’00’’ 90 204 9807, 9808, 9811, 9900, 9901 58º00’00’’ 013º55’12’’ 175 30-juin-21 207 9816, 9853 57º43’48’’ 004º18’00’’ 240 2-juil-21 537 4267 English Channel 9848 Copenhagen 8-sep-30 9858 N. Cherbourg 1930 J. SOUTO, E. FERNÁNDEZ-PULPEIRO, O. REVERTER-GIL 363 Measurements of the specimens were made on the Family Lichenoporidae Smitt, 1867 photographs thus obtained. They are expressed in mm and Disporella hispida (Fleming, 1828). (St. 6: 9844, 9845; St. identified by the following abbreviations: AZL: Autozooid 11: 18718; St. 17: 18696, 18720; St. 18: 4188, 4189, 4199, length. AZW: Autozooid width. OL: Orifice length. OW: 4208, 4218, 4219, 4230, 18702; St. 108: 13632; N. Orifice width. Cherbourg: 9858). Coronopora truncata (Fleming, 1828) (St. 204: 9807). Systematic list and localities Patinella radiata (Audouin, 1826) (St. 18: 4217; Sample 9854). The bryozoans studied during the present study corresponded to 87 species, of which 15 belong to Order Order Cheilostomata Busk, 1852 Cyclostomata and 72 to Order Cheilostomata. The classification adopted for the cyclostomes is that Family Electridae d’Orbigny, 1851 followed by Hayward & Ryland (1985), with modifications Electra pilosa (Linnaeus, 1767) (St. 6: 9856; St. 7: 9855; included from more recent studies, whereas that adopted St. 11: 18718; St. 17: 18692, 18695, 18696, 18697, 18698, for the cheilostomes was that of Gordon (2006 a, b). 18719, 18720; St. 18: 4184, 4187, 4188, 4190, 4191, 4193, The inventory of the species identified, including the 4194, 4195, 4196, 4198, 4201, 4202, 4209, 4210, 4212, identification of the sampling stations where they were 4220, 4223, 4230, 18702). collected and number of samples, is provided below. Conopeum lacroixi (Audouin, 1826) (St. Rivage de Charlotten: 9848; St. west cost of Isle Bodero: 9850). PHYLUM BRYOZOA Ehrenberg, 1831 Pyripora catenularia (Fleming, 1828) (St. 18: 4196, 4200, 4211, 4216, 4223, 18702). Class Stenolaematoda Borg, 1926 Order Cyclostomata Busk, 1852 Family Aeteidae Smitt, 1868 Aetea sica (Couch, 1844) (St. 18: 4188, 4200, 4214, 4218, Family Crisiidae Johnston, 1847 18702;). Crisia denticulata (Lamarck, 1816) (St. 9: 6326) Family Calloporidae Norman, 1903 Family Tubuliporidae Johnston, 1838 Callopora craticula (Alder, 1856) (St. 18: 4193, 18702;). Tubulipora liliacea (Pallas, 1766) (St. 1 (5): 9812). Callopora dumerilii (Audouin, 1826) (St. 6: 9843, 9844; Tubulipora lobifera Hastings, 1963 (St. 11: 18718; St. 16: 9856; St. 11: 18718; St.16: 18708; St. 17: 4232, 4236, 18708). 4239, 18698, 18719; St. 18: 4187) Tubulipora penicillata (Fabricius, 1780) (St. 18: 4213). Callopora lineata (Linnaeus, 1767) (St. 6: 9845; St. 11: Exidmonea atlantica (Forbes in Johnston, 1847) (St. 1 (5): 18718; St. 17: 4239, 18692, 18696, 18719, 18720; St. 18: 9808; St. 76: 4245). 18702). Callopora rylandi Bobin & Prenant, 1965 (St. 18: 4230). Family Diasporidae Gregory, 1899 Amphiblestrum flemingii (Busk, 1854) (St.18: 4194, 4196, Eurystrotos compacta (Norman, 1866) (St. 18: 4223, 18702). 18702; St. 201: 9817, 9818; St. 204: 9811; St. 207: 9816, Diplosolen obelia (Johnston, 1838) (St. 18: 4230; St. 204: 9853; N. Cherbourg: 9858). 9901). Amphiblestrum auritum (Hincks, 1877) (St. 11: 18718; St. Plagioecia patina (Lamarck, 1816) (St. 6: 9849, St 18: 17: 18718, 18720; St. 18: 4199). 18702). Plagioecia sarniensis (Norman, 1864) (N. Cherbourg: 9858). Caulorhamphus spiniferum (Johnston, 1832) (St. 11: 18718; St. 17: 18692; St. 18: 4184, 4186, 4201, 4206, 4207, Family Annectocymidae Hayward & Ryland, 1985 4208, 4209, 4210, 4212, 4214, 4223, 4230, 18702). Annectocyma major (Johnston, 1847) (St. 204: 9900). Copidozoum exiguum (Barroso, 1920) (St. 11: 18718). Entalophoroecia deflexa (Couch, 1842) (St. 7: 9855; St. 11: 18718; St. 18: 4191, 4196, 4218, 4229, 4230, 18702; St. Family Flustridae Fleming, 1828 204: 9900, 9901; N. Cherbourg: 9858).
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