Scientia Marina, Vol 76, No 2 (2012)

New insights into the morphology, reproduction and distribution of the large-tuberculate octopus Graneledone macrotyla from the Patagonian slope


https://doi.org/10.3989/scimar.03473.07A

Ángel Guerra
Instituto de Investigaciones Marinas (CSIC) , Spain

Álvaro Roura
Instituto de Investigaciones Marinas (CSIC) , Spain

Maria Pilar Sieiro
Instituto de Investigaciones Marinas (CSIC) , Spain

Julio M. Portela
Instituto Español de Oceanografía (IEO) , Spain

José Luis del Río
Instituto Español de Oceanografía (IEO) , Spain

Abstract


The new information reported in this paper is based on 11 specimens of the large-tuberculate octopus Graneledone macrotyla. These specimens were caught in bottom trawl surveys ATLANTIS 2009 and 2010 carried out on the Patagonian slope off the Argentinean Economic Exclusive Zone between 24 February and 1 April 2009 and from 9 March to 5 April 2010 respectively. A new diagnosis and a complete description of the species are provided. This is the first time that stylets, beaks and spermatophores are described. This is also the first time in which mature females have been studied and the female genitalia described. Like other eledonid octopods, G. macrotyla does not have spermathecae in the oviducal glands. The presence of fertilized eggs inside the ovary suggests that fertilization takes place within the ovary. The simultaneous occurrence of oocyte cohorts at different oogenic stages suggests that the species is a multiple spawner. G. macrotyla inhabits shallower waters on the Patagonian slope (475-921 m) than in the subantartic area (1647-2044 m). From a biogeographical point of view, our data show that G. macrotyla inhabits the plume of cold subantarctic waters, which is pushed far north into the southwestern Atlantic by the Falkland (Malvinas) Current.

Keywords


Graneledone macrotyla; Cephalopoda; systematic; reproduction; biogeography; Patagonian slope; southwest Atlantic

Full Text:


PDF

References


Adam W. 1941. Notes sur les Céphalopodes, XV. Sur la valeur diagnostique de la radule chez les Céphalopodes Octopodes. Bull. Mus. R. Hist. Nat. Belgique, XVII, 38: 1-19.

Allcock A. L., Collins M. A., Vecchione M. 2003. A redescription of Graneledone verrucosa (Verrill, 1881) (Octopoda: Octopodidae). J. Mollus. Stud. 69: 135-143. http://dx.doi.org/10.1093/mollus/69.2.135

Bello G. 2006. Signs of multiple spawning in Graneledone pacifica (Cephalopoda: Octopodidae). J. Mar. Biol. Mar. Ass. U.K. 86: 1183-1186. http://dx.doi.org/10.1017/S0025315406014172

Boyle P.R., Chevis D. 1991. Changes in follicle cell epithelium nuclei at the onset of vitellogenesis in the octopus Eledone cirrhosa. Bull. Mar. Sci., 49: 372-378.

Dixon D., Priski R.A.M., Dixon L.R.J., Jha A.N. 2002. Marine invertebrate eco-genotoxicology: a methodological overview. Mutagenesis, 17: 495-507. http://dx.doi.org/10.1093/mutage/17.6.495 PMid :12435847

Furuya H., Hochberg F.G. 2002. New species of Dicyemennea (Phylum: Dicyemida) in deep-water Graneledone (Mollusca: Cephalopoda: Octopoda) from the Antarctic. J. Parasitol. 88: 330-336. PMid :12054007

Gabe N. 1968. Techniques histologiques. Masson et Cie, Paris.

Guerra A., González A.F., Cherel Y., Rocha F. 2000. Graneledone gonzalezi sp. nov. (Mollusca: Cephalopoda): a new octopod from the Kerguelen Islands. Antarc. Sci. 12: 33-40. http://dx.doi.org/10.1017/S0954102000000055

Guerra A., Portela J.M., del Río J.L. 2011. Cephalopods caught in the outer Patagonian shelf and its upper and medium slope in relation with the main oceanographic features. Fish. Res. 109: 179-186. http://dx.doi.org/10.1016/j.fishres.2011.02.003

Kubodera T., Okutani T. 1994. Eledonine octopods from the Southern Ocean: systematics and distribution. Antarc. Sci. 6: 205-214. http://dx.doi.org/10.1017/S0954102094000325

Laptikhovsky V.V. 2001. Fecundity, egg masses and hatchlings of Benthoctopus spp (Octopodidae) in Falkland waters. J. Mar. Biol., Ass., U.K. 81: 267-270.

Laptikhovsky V.V., Arkhipkin, A.I. 2001. Oogenesis and gonad development in the cold water loliginid squid Loligo gahi (Cephalopoda: Myopsida) on the Falkland shelf. J. Mollus. Stud. 67: 475-482. http://dx.doi.org/10.1093/mollus/67.4.475

Melo Y.C., Sauer W.H.H. 1998. Ovarian atresia in cephalopods. S. Afric. J. Mar. Sci. 20: 143-151. http://dx.doi.org/10.2989/025776198784126539

Nixon M. 1995. A nomenclature for the radula of the Cephalopoda (Mollusca) — living and fossil. J. Zool. London 236: 73-81. http://dx.doi.org/10.1111/j.1469-7998.1995.tb01785.x

Nixon M. 1998. The radulae in Cephalopoda. Smith. Contr. Zool. nº 586: 39-54.

Perez J.A.A., Haimovici M., Cousin J.C.B. 1990. Sperm storage mechanism and fertilization in females of two South American eledonids (Cephalopoda: Octopoda). Malacologia 32: 147-154.

Rideout, R.M., Tomkiewicz J. 2011. Skipped spawning in fishes: more common that you might think. Mar. Coast. Fish. 3: 176-189.

Rocha F., Guerra A., González A. F. 2001. A review of the reproductive strategies in cephalopods. Biol. Rev. 76: 291-304. http://dx.doi.org/10.1017/S1464793101005681 PMid :11569786

Roper C.F.E., Voss G.L. 1983. Guidelines for taxonomic descriptions of cephalopods species. Mem. Nat. Mus. Victoria 44: 49-63.

Schmidt-Mende J., Hellström-Lindberg E., Joseph B., Zhivotovsky B. 2000. Freezing induces artificial cleavage of apoptosis-related proteins in human bone marrow cells. J. Immunol. Meth. 245: 91-94. http://dx.doi.org/10.1016/S0022-1759(00)00285-4

Strugnell J.M., Rogers A.D., Prodöhl P.A., Collins M.A., Allcock A.L. 2008. The thermohaline expressway: the Southern Ocean as a centre of origin for deep-sea octopuses. Cladistics 24: 853-860. http://dx.doi.org/10.1111/j.1096-0031.2008.00234.x

Voss G.L. 1976. Two new species of octopods of the genus Graneledone (Mollusca: Cephalopoda) from the Southern Ocean. Proc. Biol. Soc. Washington 88: 447-458.

Voss G.L., Pearcy W.C. 1990. Two new species of deep water octopods (Mollusca; Cephalopoda) of the northeastern Pacific. Proc. California Acad. Sci. 47: 47-94.




Copyright (c) 2012 Consejo Superior de Investigaciones Científicas (CSIC)

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


Contact us scimar@icm.csic.es

Technical support soporte.tecnico.revistas@csic.es