|
|
|
|
|
| Gonzalez, A; Guerra, A; Pascual, S; Segonzac, Michel. |
| During biological sampling of hydrothermal vents on the East Pacific Rise, the manned submersible 'Nautile' caught the first female of the endemic cephalopod Vulcanoctopus hydrothermalis. The specimen caught at the vent site Gromit (21 degrees 33 66'S, 114 degrees 17 98'W at 2832 m depth) is described here in detail and an amended diagnosis of the species proposed. The external morphology, measurements and internal structure resemble that Of males of this species. One of the most remarkable characters is the lack of spermathecae and the absence of apical filaments in the oocytes to provide a site for sperm storage. It is suggested that some species of the genera Benthoctopus and Bathypolypus would be the most suitable octopod ancestor of V. hydrothermalis. |
| Tipo: Text |
Palavras-chave: Female description; Vulcanoctopus hydrothermalis; Cephalopods; Hydrothermal vent. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4044.pdf |
| |
|
|
| Rocha, Francisco; Gonzalez, Angel; Segonzac, Michel; Guerra, Angel. |
| Introduction : The hydrothermal vent ecosystem is inhabited by poorly known species of deep-sea octopuses (Lutz & Voight, 1994). Vulcanoctopus hydrothermalis Gonzalez & Guerra, 1998, is the only described cephalopod from a hydrothermal vent (Gonzalez et al., 1998). Little is known about this small benthic octopus, up to 35 mm mantle length, with a muscular and semi-translucent body, lack of any type of chromatic elements in the skin and eye with no trace of an iris (Gonzalez et al., 1998). Its morphology was studied by Gonzalez et al. (in press) but there have been no behavioural studies of this species to date. Most observations of octopus behaviour in abyssal environments, mainly Cirroctopoda, have been described from videotape records (Boletzky... |
| Tipo: Text |
Palavras-chave: Vulcanoctopus hydrothermalis; Behaviour; Cephalopod; Hydrothermal vent. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-897.pdf |
| |
|
|
|
