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| Registros recuperados: 113 | |
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| Kochedi, W.; Hattour, A.; Said, K.. |
| Une campagne de prospection planctonique à été réalisée entre le 24 juin et le 7 juillet 2008 au large des côtes Est de la Tunisie depuis le Cap bon jusqu’à Ras Kapoudia. Les objectifs de cette campagne consistaient à étudier l’assemblage larvaire des poissons téléostéens et d’évaluer l’influence des facteurs environnementaux sur leur distribution spatiale. Au total 10832 larves ont été identifiées appartenant à 46 taxons. La distribution spatiale des larves a montré une grande variabilité interspécifique. En effet, plusieurs facteurs sont intervenus dans leur distribution. Nous citons en premier lieu la circulation complexe des masses d’eaux, qui est responsable de la répartition des larves bien éloignées des aires de ponte. Le gradient de la profondeur... |
| Tipo: Journal Contribution |
Palavras-chave: Fish larvae; Environmental factors; Spatial distribution. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4692 |
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| Aristizabal, E.O.; Suárez, J.. |
| The red porgy (Pagrus pagrus)is an important commercial and recreational species with very good prospect for aquaculture. Because significant mortalities, the mass production of this species is limited. This paper describes three weaning strategies to investigate their effects on the survival and growth of red porgy larvae reared in laboratory: A)traditional three-step weaning (rotifers - Artemia - diet)(control); B)one-step early weaning by co-feeding (rotifers - Artemia + diet), and C)one-step direct early weaning (rotifers - diet). Sigificative differences were recorded among treatments (P0.05). Best survival rate (45.6 ± 7.6 percent)and growth (7.4 ± 0.5 mm)were found in treatment B. Results indicate that co-feeding red porgy larvae with inert and live... |
| Tipo: Journal Contribution |
Palavras-chave: Fish larvae; Marine fish; Feeding; Feeding; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_2924. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1556 |
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| Buratti, C.C.. |
| The life history of numerous aquatic organisms involves a pelagic larval stage, followed by a shift to a demersal or benthic existence (settlement) in the juvenile and adult stage. This transition and ecological, physiological and morphological changes frequently remain recorded like checks or marks in fish otoliths. As a contribution to the knowledge of hake (Merluccius hubbsi)life history, sagittae otoliths of larvae and juveniles with total length between 19 and 190 mm inhabiting North Patagonian and Bonaerensis waters in the Argentine sea (SW Atlantic)were analyzed. Using an image analysis system, otoliths microstructure was described and comparisons between left and right otoliths and between study areas in the following variables were realized:... |
| Tipo: Theses and Dissertations |
Palavras-chave: Fish larvae; Juveniles; Otolith reading; Otoliths; Larval settlement; Life history; Otoliths; Life history; Fish larvae; Juveniles. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/3108 |
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| Braverman, M.. |
| This study encompasses the bio-physical interactions of whitemouth croaker (Micropogonias furnieri) early life stages living in La Plata estuary (Argentina-Uruguay, South America) to understand how they take advantage of the estuarine dynamics while traveling from spawning to nursery areas and undergoing ontogenetic and associated ecological changes. The analyses used include studies of spatio-temporal distribution length-dependent patterns; growth patterns looking for settlement marks in otoliths; and development related to metamorphosis and ontogenetic variations of the diet and trophic level. Samples and data come from vertically stratified samplings from 3 cruises (2005, 2006 and 2009). Distributional data also comes from an historic database. Results... |
| Tipo: Theses and Dissertations |
Palavras-chave: Fish larvae; Developmental stages; Metamorphosis; Larval settlement; Ontogeny; Saline fronts; Estuarine dynamics. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4187 |
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| Moriondo Danovaro, P.. |
| The study on distribution and abundance of eggs and early planktonic stages of red shrimp, Pleoticus muelleri (Bate, 1888), contributes to a better knowledge of the species dynamics. Results from processing and analyzing 72 plankton samples collected with Bongo net during two research cruises on board of FV “Arbumasa XVIII” and RV “Capitán Oca Balda”, carried out in the Patagonian littoral in March 2008 and January 2009, are presented. In both cruises, eggs and larval stages were found all over the study area. The highest punctual densities of eggs were recorded in the area known as “La Pared” (46° 45’ S-65° 55’ W and 46° 50’ S-65° 55’ W). Eggs indicate the presence of shrimp reproductive concentrations which, while migrating eastwards towards waters of... |
| Tipo: Journal Contribution |
Palavras-chave: Fish larvae; Eggs; Abundance; Fishery surveys; Pleoticus muelleri; Marine environment. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4880 |
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| Figueroa, D.E.. |
| On the base of samples of congrid eels captured in the South Western Atlantic Ocean, between 34 degree S to 40 degree S and 30m to 400m depth, from research cruises, commercial fleet (low scale and coastal fishing) and specimens preserved in ichthyological collections, four species were determined: Ariosoma opistophthalmum, Conger orbignyanus, Bassanago albescens and Bassanago nielseni. The latter is the first record in the region. Diagnosis of taxa from Family Congridae to species is given. Morphology, reproduction, feeding and distribution of the fish species found from the region are compared and discussed, as well as those from other parts of the world. On the other hand, numerous samples of ichthyoplankton were obtained from research cruises carried... |
| Tipo: Theses and Dissertations |
Palavras-chave: Animal morphology; Taxonomy; Anatomy; Reproduction; Feeding; Geographical distribution; Fish larvae; Taxonomy; Feeding; Geographical distribution; Animal morphology; Anatomy; Reproduction; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_421; Http://aims.fao.org/aos/agrovoc/c_49890; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_2924. |
| Ano: 1999 |
URL: http://hdl.handle.net/1834/1486 |
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| Missaoui, H.; El Abed, A.; M'rabet, R.; Romdhane, M.S.; Zarrad, R.; Jarboui, O.. |
| Monthly variability of zooplankton and ichthyoplankton abundance and composition were studied in 6 stations in the Gulf of Tunis between February 2003 and January 2004. Plankton trawls were horizontal, in surface and at night. Study area seems to be influenced by climatic conditions and the outflow of Majreda River that affect the surface temperature and salinity. Copepods, with many abundance peaks in the year, formed the most abundant group (84%) followed by cladocerans (8%) and chaetognaths (3%). The appendicularians, cladocerans and medusae had swarms in the summer, the creseis and the chaetognths in the autun and the zoae larvae in the spring. The highest fish spawning periods was in summer then the highest larva abundance was in winter and... |
| Tipo: Journal Contribution |
Palavras-chave: Community composition; Fish larvae; Ichthyoplankton; Temporal variations; Zooplankton; Zooplankton; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2924. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/4242 |
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| Pájaro, M.. |
| Cannibalism is not an abnormal behaviour and it can be observed in a wide number of animals. In Pisces, cannibalism may be the result of endogenous intraspecific factors (nutritional state, size, age, state of development) or exogenous intraspecific factors (food, density, light). Nevertheless, external fertilization and the high fecundity of teleost fish tend to increase egg cannibalism, in particular among filter feeding fishes such as anchovies. In the present work, two important Argentine anchovy Engraulis anchoita stocks were studied. The first is to the north of 41°S, and spawns during spring on the coastal and shelf waters of Buenos Aires Province,Argentina, and Uruguay. The second one inhabits the Patagonian region, from 41°S to 47°S. It spawns... |
| Tipo: Theses and Dissertations |
Palavras-chave: Feeding behaviour; Cannibalism; Natural mortality; Fish larvae; Fish eggs; Spawning seasons; Stocks; Food preferences; Reproduction; Stocks; Food preferences; Feeding behaviour; Cannibalism; Fish larvae; Reproduction; Http://aims.fao.org/aos/agrovoc/c_28772; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_9580; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/1476 |
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| de Ciechomski, J.D.; Cassia, M.C.. |
| Observations on the embrionic and larval development of Cynoscion striatus are presented. The description are made on the basis of material obtained by artificial fertilization. Eggs are pelagic, spherical, 700-840µ in diameter and with single oil globule of 210µ-240µ. The yolk is homogeneous and the chorion has smooth surface. The embryonic development is short and at temperatures of 19°-20°C hatching takes place, 34-36 hours after the fertilization. The larvae at hatching are small, about 2 mm in length and not advanced in their development. The mouth is not functional and the anus is not open. The oil globule is situated in the posterior part of the yolk sac; the position of the anus is close to the posterior end of the yolk sac and the digestice tract... |
| Tipo: Journal Contribution |
Palavras-chave: Embryos; Fish larvae; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2924. |
| Ano: 1982 |
URL: http://hdl.handle.net/1834/2045 |
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| Registros recuperados: 113 | |
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