Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods
The effect of food and photoperiod on dorado (Salminus brasiliensis) post-larvae growth and survival was investigated using the following treatments: LD (Light: Dark) 24:0 + Artemia nauplii (A), LD 24:0 + fish prey (F), LD 14:10 + A, LD 14:10 + F, LD 0:24 +A and LD 0:24 + F. Prochilodus lineatus lar...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Instituto de Tecnologia do Paraná (Tecpar)
2007-05-01
|
| Series: | Brazilian Archives of Biology and Technology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300010 |
| _version_ | 1818618346409558016 |
|---|---|
| author | Jackson Haroldo Schütz Alex Pires de Oliveira Nuñer |
| author_facet | Jackson Haroldo Schütz Alex Pires de Oliveira Nuñer |
| author_sort | Jackson Haroldo Schütz |
| collection | DOAJ |
| description | The effect of food and photoperiod on dorado (Salminus brasiliensis) post-larvae growth and survival was investigated using the following treatments: LD (Light: Dark) 24:0 + Artemia nauplii (A), LD 24:0 + fish prey (F), LD 14:10 + A, LD 14:10 + F, LD 0:24 +A and LD 0:24 + F. Prochilodus lineatus larvae were used as fish prey. Higher survival rates were registered in fish prey treatments (P<0.05) and were not influenced by photoperiod whereas in Artemia treatments, the survival was very low, but directly proportional to light increase (P<0.05). The better growth in LD 0:24 was related to a safe-energy strategy that reduced energy consumption whereas in LD 24:0, the higher energy consumption reduced the growth. In intermediate photoperiod, the post-larvae did not define a strategy to capture preys, using alternatively the static safe-energy and the swimming consuming energy, which caused higher heterogeneity in growth.<br>O efeito da alimentação e do fotoperíodo sobre o crescimento e a sobrevivência de pós-larvas de dourado (Salminus brasiliensis) foi investigado utilizando-se os seguintes tratamentos: LE (Luz: Escuro) 24:0 + náuplios de Artemia (A), LE 24:0 + larva forrageira (L), LE 14:10 + A, LE 14:10 + L, LE 0:24 +A e LE 0:24 + L. Larvas de Prochilodus lineatus foram utilizadas como larva forrageira. Taxas de sobrevivência mais elevadas foram registradas nos tratamentos que utilizaram larvas forrageiras (P<0,05), que não foram influenciados pelo fotoperíodo, enquanto nos tratamentos com Artemia a sobrevivência foi muito reduzida, mas diretamente proporcional ao aumento da disponibilidade de iluminação (P<0,05). O melhor crescimento em LE 0:24 esteve relacionado ao uso de uma estratégia de baixo consumo energético enquanto em LE 24:0 o maior consumo de energia produziu menor crescimento. No fotoperíodo intermediário as pós-larvas não definiram uma estratégia única para capturar as presas, utilizando alternadamente a estratégia estática de baixo consumo de energia e a estratégia natatória, associada a um maior consumo energético, que causou maior heterogeneidade no crescimento. |
| first_indexed | 2024-12-16T17:20:08Z |
| format | Article |
| id | doaj.art-c4faad46fca24846b196acbf8b526f47 |
| institution | Directory Open Access Journal |
| issn | 1516-8913 1678-4324 |
| language | English |
| last_indexed | 2024-12-16T17:20:08Z |
| publishDate | 2007-05-01 |
| publisher | Instituto de Tecnologia do Paraná (Tecpar) |
| record_format | Article |
| series | Brazilian Archives of Biology and Technology |
| spelling | doaj.art-c4faad46fca24846b196acbf8b526f472022-12-21T22:23:11ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242007-05-0150343544410.1590/S1516-89132007000300010Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiodsJackson Haroldo SchützAlex Pires de Oliveira NuñerThe effect of food and photoperiod on dorado (Salminus brasiliensis) post-larvae growth and survival was investigated using the following treatments: LD (Light: Dark) 24:0 + Artemia nauplii (A), LD 24:0 + fish prey (F), LD 14:10 + A, LD 14:10 + F, LD 0:24 +A and LD 0:24 + F. Prochilodus lineatus larvae were used as fish prey. Higher survival rates were registered in fish prey treatments (P<0.05) and were not influenced by photoperiod whereas in Artemia treatments, the survival was very low, but directly proportional to light increase (P<0.05). The better growth in LD 0:24 was related to a safe-energy strategy that reduced energy consumption whereas in LD 24:0, the higher energy consumption reduced the growth. In intermediate photoperiod, the post-larvae did not define a strategy to capture preys, using alternatively the static safe-energy and the swimming consuming energy, which caused higher heterogeneity in growth.<br>O efeito da alimentação e do fotoperíodo sobre o crescimento e a sobrevivência de pós-larvas de dourado (Salminus brasiliensis) foi investigado utilizando-se os seguintes tratamentos: LE (Luz: Escuro) 24:0 + náuplios de Artemia (A), LE 24:0 + larva forrageira (L), LE 14:10 + A, LE 14:10 + L, LE 0:24 +A e LE 0:24 + L. Larvas de Prochilodus lineatus foram utilizadas como larva forrageira. Taxas de sobrevivência mais elevadas foram registradas nos tratamentos que utilizaram larvas forrageiras (P<0,05), que não foram influenciados pelo fotoperíodo, enquanto nos tratamentos com Artemia a sobrevivência foi muito reduzida, mas diretamente proporcional ao aumento da disponibilidade de iluminação (P<0,05). O melhor crescimento em LE 0:24 esteve relacionado ao uso de uma estratégia de baixo consumo energético enquanto em LE 24:0 o maior consumo de energia produziu menor crescimento. No fotoperíodo intermediário as pós-larvas não definiram uma estratégia única para capturar as presas, utilizando alternadamente a estratégia estática de baixo consumo de energia e a estratégia natatória, associada a um maior consumo energético, que causou maior heterogeneidade no crescimento.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300010DoradoFood typeLarviculturePhotoperiodSalminus brasiliensis |
| spellingShingle | Jackson Haroldo Schütz Alex Pires de Oliveira Nuñer Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods Brazilian Archives of Biology and Technology Dorado Food type Larviculture Photoperiod Salminus brasiliensis |
| title | Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods |
| title_full | Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods |
| title_fullStr | Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods |
| title_full_unstemmed | Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods |
| title_short | Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods |
| title_sort | growth and survival of dorado salminus brasiliensis pisces characidae post larvae cultivated with different types of food and photoperiods |
| topic | Dorado Food type Larviculture Photoperiod Salminus brasiliensis |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300010 |
| work_keys_str_mv | AT jacksonharoldoschutz growthandsurvivalofdoradosalminusbrasiliensispiscescharacidaepostlarvaecultivatedwithdifferenttypesoffoodandphotoperiods AT alexpiresdeoliveiranuner growthandsurvivalofdoradosalminusbrasiliensispiscescharacidaepostlarvaecultivatedwithdifferenttypesoffoodandphotoperiods |