Biologia reprodutiva do peixe-rei Odontesthes argentinensis (Valenciennes) (Atherinopsidae) da região marinha costeira do sul do Brasil

Moresco, Alex; Bemvenuti, Marlise de Azevedo

doi:10.1590/s0101-81752006000400025

Cited by 35 publications

(26 citation statements)

References 9 publications

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“…October to November), although a few individuals remained in the mature state in December. This result differs from the findings of Moresco (2006) in subtropical areas of Brazil, where the main breeding season for O . argentinensis extends over 5 months (from August to December).…”

Section: Discussionmentioning

confidence: 99%

“…The species inhabits both estuaries and inshore waters (Cousseau, 1986), often forming local, isolated populations (Beheregaray & Levy, 2000). This geographic isolation promotes the development of differing biological features among populations, such as egg morphology, spawning period and genetic structures that reflect local environmental characteristics (Phonlor & Cousin, 1997; Beheregaray & Levy, 2000; Moresco & Bemvenuti, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…argentinensis . The reproductive biology of this species, however, has been assessed only in a subtropical marine area of southern Brazil (32° S) (Moresco, 2006; Moresco & Bemvenuti, 2006), where environmental conditions differ greatly from those in temperate areas in North Patagonia (40° S). Other relevant population attributes such as age, growth and their related variables remain uninvestigated.…”

Section: Introductionmentioning

confidence: 99%

“…Populations of O. argentinensis are economically significant resources for local fisheries in southern Brazil, Uruguay and Argentina (De Buen, 1953; Chao et al ., 1985; Sampaio, 2006). As a shallow‐water pelagic fish, the species is captured in Brazil by artisanal fishing in the Laguna dos Patos, (Moresco, 2006) and is exploited in Argentina by recreational and artisanal fisheries in Buenos Aires Province (Llompart, 2011; Llompart et al ., 2012) as well as on the coast of Chubut Province, where this species represents the second most fished species after Odontesthes smitti (Lahille 1929) (M. A. López, unpubl. data).…”

Section: Introductionmentioning

confidence: 99%

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Biological traits and growth patterns of pejerreyOdontesthes argentinensis

Llompart

Colautti

Maiztegui

et al. 2012

Journal of Fish Biology

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This study assesses for the first time the relationship between annual cycles of different biological indices with growth patterns of a marine pejerrey Odontesthes argentinensis population near its southern-distribution boundary in North Patagonia. The reproductive period is between September and November evidenced by an increase in the gonado-somatic index with a peak in October corresponding to spawning. The reproductive cycle was also coupled with metabolic processes related to energy allocation as shown by changes in the hepato-somatic index and body condition. Total length (L(T) ) at maturity was 270 for females and 282 mm for males, whereas fecundity was estimated at mean ±s.d. = 9380 ± 1797 mature oocytes. Based on the marginal increment analysis, most of the scales showed a maximum value during summer, with a sharp decline thereafter during autumn and winter, indicating that scale rings are formed during the latter period and only once a year. Growth fitted by the von Bertalanffy model for both males and females did not show significant differences and showed a rapid growth during the first 2 years. The shorter reproductive period compared with that of the northern O. argentinensis populations inhabiting tropical and subtropical areas was interpreted as an adjustment to temperate environmental conditions. The larger maximum L(T) and L(T) at first maturity are in agreement with the counter-gradient hypothesis and could be related to the selective effects of low temperature and a shorter growing season. This latitude dependency argues strongly against the application of the same fishing regulations for different O. argentinensis populations as a whole and reinforces the need to assess basic biological features at a population scale to promote local sustainable fisheries management.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biological traits and growth patterns of pejerreyOdontesthes argentinensis

Llompart

Colautti

Maiztegui

et al. 2012

Journal of Fish Biology

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“…The SG subestuary presented the lowest abundance, richness and diversity of the community probably related to the estuarine-ocean gradient of the RdlP (FRAMIÑAN; BROWN, 1996;JAUREGUIZAR et al, 2016). In this subestuary dominated Odontesthes argentinensis, a shallow-water pelagic fish known by its marine affinities and inhabits both estuarine and inshore waters (MORESCO; BEMVENUTI, 2006). The large phenotypic plasticity of this species allows it to adapt to a wide range of salinities (LLOMPART et al, 2013).…”

Section: Inter-estuarine Patterns In Fish Assemblagesmentioning

confidence: 99%

Inter-estuarine and temporal patterns of the fish assemblage of subtropical subestuaries along the Río de la Plata coast (Uruguay)

et al. 2017

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Acuña et al.: Fish assemblage in Uruguayan subestuaries 173Inter-estuarine and temporal patterns of the fish assemblage of subtropical subestuaries along the Río de la Plata coast (Uruguay)Fish assemblages in subestuaries have been poorly studied worldwide. In order to evaluate the interestuarine and temporal variability of the ichthyofauna of subestuaries along the Uruguayan coast of the Río de la Plata (RdlP), the Pando, Solís Chico and Solís Grande systems were sampled between 2011 and 2013. Fish biomass, abundance, species richness and diversity indices were analysed, defining fish assemblages characterised by a few species and great abundance. Estuarine resident and freshwater species represented 55.5% of the fish assemblage according to estuarine use guilds. Species occurrence was similar in the three subestuaries, but the relative abundances differed among them. The analysed community parameters showed a decreasing trend from west to east along the Uruguayan coast. Highest diversity and fish abundance were recorded in the Pando system located in the proximities of an important spawning area in the inner RdlP estuary. In the Solís Grande subestuary occurred the lowest species richness and fish abundance. The Solís Chico was characterised as a transitional subsystem. All three subestuaries showed an increase in species richness and abundance during high temperature periods, probably related to the life cycle of the species sharing habitats between the RdlP and the coastal subestuaries. This study constitutes the first step in assessing the fish assemblage patterns in coastal ecosystems of the RdlP and an approach about the ecological role of the subestuaries in the southwest Atlantic Ocean. AbstrAct

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Diet Composition and Feeding Strategy of the New World SilversideOdontesthes argentinensisin a Temperate Coastal Area (South America)

Thompson

Volpedo

2018

Mar Coast Fish

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The diet composition and feeding strategy of the New World silverside Odontesthes argentinensis were evaluated in a temperate coastal area during austral summer. This species is an economically significant resource for the fishing industry in South America. The food preference of O. argentinensis varied with its size‐class: the smallest size‐classes preferred diatoms and annelids, larger size‐classes seemed to prefer barnacle cypris larvae, and the largest size‐classes showed a preference for decapod megalopa larvae. Plankton samples were dominated by calanoid and cyclopoid copepods; however, contrary to what was expected, O. argentinensis showed negative selectivity for both groups. A selectivity index indicated that O. argentinensis selects the food it eats with regard to prey availability in the environment. The information obtained in this study demonstrates the importance of knowing the food preference of O. argentinensis to obtain a better condition factor, which will be key to its potential farming in closed systems.

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Biologia reprodutiva do peixe-rei Odontesthes argentinensis (Valenciennes) (Atherinopsidae) da região marinha costeira do sul do Brasil

Cited by 35 publications

References 9 publications

Biological traits and growth patterns of pejerreyOdontesthes argentinensis

Biological traits and growth patterns of pejerreyOdontesthes argentinensis

Inter-estuarine and temporal patterns of the fish assemblage of subtropical subestuaries along the Río de la Plata coast (Uruguay)

Diet Composition and Feeding Strategy of the New World SilversideOdontesthes argentinensisin a Temperate Coastal Area (South America)

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