História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae)
The study addresses to the copepods natural history of an urban lake in a protected municipal area in the lavrado of Roraima, whose lake has the characteristic of being the unique remnant of urban lakes in Boa Vista. The lake has a round format, measuring near 60 meters in diameter. The research...
| Autor principal: | Geraldes Primeiro, Luis José de Oliveira |
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| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/11407 http://lattes.cnpq.br/7042477799996664 |
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oai:repositorio:1-11407 |
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oai:repositorio:1-11407 História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae) Geraldes Primeiro, Luis José de Oliveira Silva, Edinaldo Nelson dos Santos Carvalho, Celso Morato de Copepoda Diaptomidae História natural The study addresses to the copepods natural history of an urban lake in a protected municipal area in the lavrado of Roraima, whose lake has the characteristic of being the unique remnant of urban lakes in Boa Vista. The lake has a round format, measuring near 60 meters in diameter. The research was related to the population structure of the copepodes of the lake. The samples were taken in six visits during December 2014, the dry period of the region, covering three microhabitats: margin with vegetation of gramineans and cyperaceans, limnetical portion and margin with absent vegetation. Each visit corresponded to a sample in one microhabitat – in all 6 samples per microhabitat. These samples also encompassed three phases of the lake – full waters, empting and critical levels of the water. Four questions guided the study concerning the proportions of adults (male and female), copepodits (juveniles) and náuplius (larvae) inside and between the microhabitats. Each question had its respective hypothesis, considered the provisory answer to the question, which results allowed some inferences on the dynamics of the studied copepod population. The main results related to these four questions were: First – i) the proportion of adults and copepodits were greater than the náuplius in the thre microhabitats, ii) the proportion of náuplius, copepodits and adults were greater in the limnetical portion, iii) the proportion of adults was fewer in the margins with vegetation. Second – i) the sexual ratio was 1:1 among the three microhabitats, ii) inside the three microhabitats the proportion between males and females was also 1:1. Third – in the three microhabitats the proportion of females carrying eggs was slightly greater when the lake was full or empting, ii) female carrying eggs was equally distributed in the three microhabitats when the lake was full, iii) the proportion of females carrying eggs was greater in the center and in the margin without vegetation when the lake was in its critical water level. Fourth – i) among the three phases of the lake – full, emptying and critical levels of the water – the copepodits and males and females adults were more abundant than náuplius, ii) the proportion of náuplius was homogenous and more abundant in the high levels of water (full and emptying), less abundant in the critical levels of water, iii) the copepodits were more abundant when the lake was emptying, but homogenous in the extreme phases– full and critical levels, iv) adult males and females had its abundance reduced at the same proportion as the water was decreasing in a sequence of full water, empting and critical levels of water. O estudo aborda a história natural dos copépodes presentes em um lago urbano situado em área municipal protegida no lavrado de Roraima que tem como característica ser o único remanescente dos lagos das áreas urbanas de Boa Vista. O lago tem formato arredondado, medindo aproximadamente 60 metros de diâmetro. A pesquisa foi relacionada à estrutura populacional dos copépodes do lago. As amostragens foram feitas em seis visitas durante dezembro de 2014 e Janeiro de 2015, época de estiagem na região, abrangendo três microhabitat do lago: margem com vegetação de gramíneas e ciperáceas, porção limnética e margem oposta sem vegetação. Cada visita correspondeu a uma amostragem em um microhabitat – ao todo foram 6 amostragens por microhábitat. Estas amostragens abrangeram também três fases do lago – cheia, período intermediário (entre cheia e seca) e seca (níveis críticos de água). Foram quatro perguntas norteadoras do estudo abrangendo as proporções de adultos (machos e fêmeas), copepoditos (os jovens) e náuplius (larvas) dentro e entre os microhabitat. Para cada pergunta foi formulada a respectiva hipótese, considerada resposta provisória à pergunta, cujos resultados permitiram algumas inferências sobre a dinâmica da população estudada dos copépodes. Os principais resultados relacionados a estas quatro perguntas foram: Primeira – i) as proporções de adultos e copepoditos foram maiores do que a dos náuplius nos três microhabitat, ii) as proporções de náuplius, copepoditos e adultos foram maiores na porção limnética, iii) a proporção de adultos foi menor na margem com vegetação. Segunda – i) a razão sexual foi 1:1 entre os três microhabitat, ii) dentro dos três microhábitats a proporção entre machos e fêmeas apresentaram distorção na razão sexual, sendo homogênea na margem sem vegetação e apresentando distorção sexual na zona limnética e margem com vegetação, sempre com fêmeas predominando. Terceira – i) nos três microhabitat a proporção de fêmeas com ovos foi ligeiramente maior quando o lago estava cheio, ii) fêmeas com ovos distribuíram-se igualmente nos três microhabitat quando o lago estava cheio e durante o seu período de redução espacial (intermediária entre a cheia e seca), iii) a proporção de fêmeas com ovos foi maior no centro quando o lago está com menos água, iv) as proporções de fêmeas com ovos foi maior no centro e na margem sem vegetação quando o lago está com nível crítico de água. Quarta – i) entre as três fases do lago – cheia, intermediária e seca, os copepoditos (jovens) e os adultos foram mais abundantes do que os náuplius, ii) as proporções de náuplius foram homogêneas nas fases altas de água (cheia e período intermediário) e menor nos níveis críticos de água, iii) os copepoditos foram mais abundantes na fase intermediária do lago e homogêneos nas fases extremas – cheia e seca, iv) os machos e fêmeas adultos tiveram abundância reduzida na mesma proporção que a redução de água do lago na sequência cheio, período intermediário e seco (nível crítico de água). 2020-02-13T18:22:37Z 2020-02-13T18:22:37Z 2016-03-10 Dissertação https://repositorio.inpa.gov.br/handle/1/11407 http://lattes.cnpq.br/7042477799996664 por Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Instituto Nacional de Pesquisas da Amazônia - INPA Biologia de Água Doce e Pesca Interior - BADPI |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
por |
| topic |
Copepoda Diaptomidae História natural |
| spellingShingle |
Copepoda Diaptomidae História natural Geraldes Primeiro, Luis José de Oliveira História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae) |
| topic_facet |
Copepoda Diaptomidae História natural |
| description |
The study addresses to the copepods natural history of an urban lake in a protected municipal
area in the lavrado of Roraima, whose lake has the characteristic of being the unique remnant
of urban lakes in Boa Vista. The lake has a round format, measuring near 60 meters in
diameter. The research was related to the population structure of the copepodes of the lake.
The samples were taken in six visits during December 2014, the dry period of the region,
covering three microhabitats: margin with vegetation of gramineans and cyperaceans,
limnetical portion and margin with absent vegetation. Each visit corresponded to a sample in
one microhabitat – in all 6 samples per microhabitat. These samples also encompassed three
phases of the lake – full waters, empting and critical levels of the water. Four questions
guided the study concerning the proportions of adults (male and female), copepodits
(juveniles) and náuplius (larvae) inside and between the microhabitats. Each question had its
respective hypothesis, considered the provisory answer to the question, which results allowed
some inferences on the dynamics of the studied copepod population. The main results related
to these four questions were: First – i) the proportion of adults and copepodits were greater
than the náuplius in the thre microhabitats, ii) the proportion of náuplius, copepodits and
adults were greater in the limnetical portion, iii) the proportion of adults was fewer in the
margins with vegetation. Second – i) the sexual ratio was 1:1 among the three microhabitats,
ii) inside the three microhabitats the proportion between males and females was also 1:1.
Third – in the three microhabitats the proportion of females carrying eggs was slightly greater
when the lake was full or empting, ii) female carrying eggs was equally distributed in the
three microhabitats when the lake was full, iii) the proportion of females carrying eggs was
greater in the center and in the margin without vegetation when the lake was in its critical
water level. Fourth – i) among the three phases of the lake – full, emptying and critical levels
of the water – the copepodits and males and females adults were more abundant than
náuplius, ii) the proportion of náuplius was homogenous and more abundant in the high levels
of water (full and emptying), less abundant in the critical levels of water, iii) the copepodits
were more abundant when the lake was emptying, but homogenous in the extreme phases–
full and critical levels, iv) adult males and females had its abundance reduced at the same
proportion as the water was decreasing in a sequence of full water, empting and critical levels
of water. |
| author_additional |
Silva, Edinaldo Nelson dos Santos |
| author_additionalStr |
Silva, Edinaldo Nelson dos Santos |
| format |
Dissertação |
| author |
Geraldes Primeiro, Luis José de Oliveira |
| title |
História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae) |
| title_short |
História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae) |
| title_full |
História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae) |
| title_fullStr |
História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae) |
| title_full_unstemmed |
História natural de Notodiaptomus amazonicus (Wright, 1935) em lago de área urbana protegida no lavrado de Roraima (Copepoda: Calanoida: Diaptomidae) |
| title_sort |
história natural de notodiaptomus amazonicus (wright, 1935) em lago de área urbana protegida no lavrado de roraima (copepoda: calanoida: diaptomidae) |
| publisher |
Instituto Nacional de Pesquisas da Amazônia - INPA |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/11407 http://lattes.cnpq.br/7042477799996664 |
| _version_ |
1787143677711220736 |
| score |
11.755432 |