HORNET MIMIC HOVERFLY (VOLUCELLA
ZONARIA) A pollinator and fly, the UK's largest hoverfly mimics the European hornet to avoid being eaten.
Selective hefbivory by amphipods inhabiting the brown alga
Zonaria angustata.
8 0,19 7 0,55 20 Patella ulyssiponensis 1 0,02 1 0,07 2 Siphonaria pectinata 3 0,07 3 0,23 5 Stramonita haemastoma 7 0,17 5 0,39 13
Zonaria pyrum 5 0,12 5 0,39 14 Total gasteropodos 704 17,09 534 42,51 3601 Crustaceos NR %NR NMI %NMI Peso Balanus sp.
linearifolium,
Zonaria diesingiana Ampithoe ngana Sargassum C, Ga ?
Bushlike algae (hereafter referred to as BA) are erect, coarsely branched algae (e.g., Asparagopsis spp., Corallina elongata, Dyctiota spp., Padina pavonica, Stypocaulon scoparium, Stypopodium zonale,
Zonaria tournefortii), from 1-15 cm in height, which constitute either large algal cushions or thin sheets.
THE press release accompanying this album proclaimed: "
Zonaria are well prepared to become the new Swedish extreme metal sensation." The Cancer Empire, juxtaposing brutality and melody with a lashing of the symphonic, should see this young quartet explode from the underground.
In particular, it's the first time that Britain's largest hoverfly, a 2cm long hornet mimic called volucella
zonaria, has strayed this far north.
vickersiae Hoyt in Howe (Howe 1920), until Allender & Kraft (1983) recognized that the "Padina gymnospora" of various authors had been misinterpreted to be usually three cells in thickness, whereas the type (
Zonaria gymnospora Kutz.) is four cells thick in mid frond and 6-8 cells thick closer to the base, in agreement with Kutzing's (1859) original depiction.
Al corte histologico, se observa la placenta
zonaria: aposicional cerca del embrion y adhesiva e intrusiva externamente a el, ademas de los hematomas marginales.
San Clemente Island: Purse Seine Rock (hundreds on Zostera, 5/96, 9/98, 8/00) and Pyramid Head (abundant on Phyllospadix, Sargassum palmeri,
Zonaria farlowii, and miscellaneous brown algae, 9/98).
Lesson, 1835 33.4 34.0 Tridachia diomedea Bergh, 1894 1.8 Trimusculus reticulatus (Sowerby, 1835) 1.8
Zonaria arabicula (Lamarck, 1811) 1.8 Total number of gastropod species 5 13 22 28 Bivalve species SL UI MI LI * Brachidontes adamsianus Dunker, 1857 60.7 8.5 Chama squamuligera Pilsbry & Lowe, 1932 1.8 8.1 9.8 * Chloromytilus palliopunctatus Carpenter, 1857 3.57 61.3 9.0 Isognomon recognitus Mabille, 1895 3.6 7.1 Pteria sterna Gould, 1851 1.8 Total number of bivalve species 1 2 4 4 SL: supralittoral, UI: upper intertidal, MI: middle intertidal, LI: lower intertidal.
At each sampling time, five replicate plants were collected from each of Dictyopteris acrostichoides, Padina crassa,
Zonaria diesingiana, Sargassum linearifolium, and S.