1999
DOI: 10.1590/s1413-77391999000200006
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Abstract: Foram estudados as hábitos alimentares dos peixes engraulídeos Anchoa januaria e Cetengraulis edentulus na Baía de Sepetiba, Rio de Janeiro, de julho de 1983 a julho de 1985. Os itens alimentares e as estruturas morfológicas relacionadas à alimentação indicaram que a área superficial dos rastros branquiais de A. januaria e C. edentulus é mais eficiente para a filtração dos alimentos, do que as distâncias entre os mesmos. Estas estruturas morfológicas possibilitam uma seletividade no tamanho dos itens alimentar… Show more

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Cited by 19 publications
(8 citation statements)
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“…For instance, the reproductive traits found for C. edentulus, such as a broad spawning period (September to December) together with high fecundity can compensate eventual stock depletion by overfishing. The planktivorous habits of C. edentulus together with the prevalent eutrophic conditions in the inner regions of the bay (Lavrado et al, 1991;Sergipense et al, 1999) could further lead to a fast recovering of C. edentulus stocks, since it is expected that the species do not face any constraints of food availability. However, if the current C. edentulus catches in Guanabara Bay, which is probably greater than the 20,000 tons / year (Jablonski et al, 2006), is posing risks to stocks, our results indicate that early spring (November) is the peak of spawning and is therefore the most critical period that should be closed for fishing.…”
Section: Discussionmentioning
confidence: 99%
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“…For instance, the reproductive traits found for C. edentulus, such as a broad spawning period (September to December) together with high fecundity can compensate eventual stock depletion by overfishing. The planktivorous habits of C. edentulus together with the prevalent eutrophic conditions in the inner regions of the bay (Lavrado et al, 1991;Sergipense et al, 1999) could further lead to a fast recovering of C. edentulus stocks, since it is expected that the species do not face any constraints of food availability. However, if the current C. edentulus catches in Guanabara Bay, which is probably greater than the 20,000 tons / year (Jablonski et al, 2006), is posing risks to stocks, our results indicate that early spring (November) is the peak of spawning and is therefore the most critical period that should be closed for fishing.…”
Section: Discussionmentioning
confidence: 99%
“…This planktivorous species is well tolerant to changes in environmental conditions, being often found at inner zones of coastal bays, where salinity is generally low, temperatures are high, and phytoplankton biomass is high due to the great input of organic waste (Sergipense et al, 1999;Silva et al, 2003;Araújo et al, 2008a). Although the great importance of C. edentulus as fishery resource in coastal bays of Southeastern Brazil, especially on Guanabara Bay where accounted for 69% (ca.13,000 ton) of total landings in 2004, (Jablonski et al, 2006;Araújo et al, 2008a), the ecology of this species is barely known, especially on its reproductive biology (Souza-Conceição et al, 2005).…”
Section: Introductionmentioning
confidence: 99%
“…Species that share the same area use different strategies to explore the available food resources. Sergipense et al (1999) found that A. januaria and C. edentulus, common in the inner Sepetiba Bay area, have a different feeding strategy, with the first species feeding predominantly on zooplankton and the latter feeding on phytoplankton. Heavy rainfall seasons seem to increase plankton availability, due to great amount of nutrients brought by rivers, favoring the development of planktofagous fish (Macgregor & Houde, 1996).…”
Section: Introductionmentioning
confidence: 99%
“…According to Randall et al (2000), the variable size and structure of the gut are dynamic, since they change with energy demand and the amount of available food in most animals. There is little evidence that male and female A. januaria differ qualitatively with respect to diet (Sergipense et al, 1999) and so differences in reproductive roles have probably led to the present results. According to Nikolsky (1963), larger numbers of females occur in sites with plenty of food.…”
Section: Discussionmentioning
confidence: 60%