geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Efectos de la racion de alimento en el desarrollo gonadal de la almeja Ruditapes decussatus (L., 1758)


, : Efectos de la racion de alimento en el desarrollo gonadal de la almeja Ruditapes decussatus (L., 1758). Boletin Instituto Espanol de Oceanografia 18(1-4): 293-300

Influence of food availability on gonadal development of the clam Ruditapes decussatus (L., 1758) was studied. The clams were exposed to three rations (0.1%, 0.05% and 0.026% of the microalgae Isochrysis galbana clone T-ISO) which, respectively, determined situations of positive, null, and negative energetic balances. The degree of sexual maturity was assessed by studying two nonspecific measurements, the dry weight of flesh variable and the condition index parameter, and two measurements specifically referring to the gonada tissue, gonadal occupation index and oocyte maximum diameter. Individuals reached sexual maturity on all of the rations, although both the rate at which the gametogenic development occurred and the volume of gonad generated were strongly influenced by food availability.

US$29.90


Other references

Tsai, T.D.; Shuck, M.E.; Thompson, D.P.; Bienkowski, M.J.; Lee, K.S., 1995: Intracellular H+ inhibits a cloned rat kidney outer medulla K+ channel expressed in Xenopus oocytes. The pH sensitivity of a cloned rat kidney K+ channel, ROMK1, was examined after expression in Xenopus oocytes. Membrane currents and intracellular pH (pH-i) were concomitantly monitored by the two-microelectrode voltage-clamp technique and a pH-se...

Noordam, A.L.; Postma, C., 1961: Pork as a source of paratyphoid fever ("other salmonelloses"). Nederlands Tijdschrift Voor Geneeskunde 105: 1421-1425

McCULLOUGH.N.B.; EISELE.C.W.; BYRNE.A.F., 1951: Incidence and distribution of Brucella abortus in slaughtered Bang's reactor cattle. Public Health Reports 66(11): 341-345

Rice, C.D.; Gray, L.D., 1988: Isolated levator myositis. A 54-year-old woman presented with a 1-day history of ptosis of the left upper lid. On examination, the patient exhibited a moderate ptosis, poor levator function, lid lag on down-gaze, and no limitation of ocular motility. A computed tomography (...

Fell, D.; Steele, R.D., 1982: Enhancement of histidine and one-carbon metabolism in rats fed high levels of retinol. Histidine metabolism was studied in rats given 10% casein diets supplemented with retinol 1000 IU/g concurrent with or previous to exposure to large amounts of dietary histidine, 1% or 2%. When a retinol-supplemented diet with 10% casein plus 1% h...

Ouellette, W.; Prosvirin, A.V.; Chieffo, V.; Dunbar, K.R.; Hudson, B.; Zubieta, J., 2006: Solid-state coordination chemistry of the Cu/triazolate/X system (X = F-, Cl-, Br-, I-, OH-, and SO4(2-)). Hydrothermal reactions of 1,2,4-triazole with the appropriate copper salt have provided eight structurally unique members of the Cu/triazolate/X system, with X = F-, Cl-, Br-, I-, OH-, and SO4(2-). The anionic components X of [Cu3(trz)4(H2O)3]F2 (...

Davis, J.B.ian; Kaminski, R.M.; Stephens, S.E., 1998: Wood duck eggshell membranes predict duckling numbers. The inner layer of avian eggshells is composed of 2 membranes; 1 of these becomes exposed after hatch and enables estimation of number of young. We counted number of wood duck (Aix sponsa) eggshell membranes to estimate number of hatched ducklings...

Campos-Perez, J.; Rice, J.; Escors, D.; Collins, M.; Paterson, A.; Savelyeva, N.; Stevenson, F.K., 2013: DNA fusion vaccine designs to induce tumor-lytic CD8+ T-cell attack via the immunodominant cysteine-containing epitope of NY-ESO 1. The cancer/testis antigen NY-ESO-1 contains an immunodominant HLA-A2-binding peptide (SLLMWITQC), designated S9C, an attractive target for vaccination against several human cancers. As cysteine contains a reactive -SH, the oxidation status of exog...

Beames, C.G.J.; King, G.A., 1972: Factors influencing the movement of materials across the intestine of Ascaris. Movement of Palmitic-1-C14 acid across the everted gut of Ascaris was measured in vitro. Under anaerobic conditions with added glucose, approximately 87% of the total radioactivity was in the luminal solution and 6% was in the pseudocoelomic solut...

Goor, C.P.Van Henkens, C.H., 1966: Deformations in Douglas Fir and Norway Spruce, and trace elements. Fertilizer trials in the Netherlands have shown evidence of trace-element deficiencies recognizable by lack of reaction to NPK treatments, distortions of the leader, needle discoloration, inadequate lignification, etc. The symptoms are particularl...