Comparisons of Fecundity, Egg Size, and Egg Mass Volume of the Freshwater Prawns Macrobrachium Potiuna and Macrobrachium Olfersi (Decapoda, Palaemonidae)

Nazari, Evelise Maria; Simões-Costa, Marcos; Müller, Yara Maria Rauh; Ammar, Dib; Dias, Martin Coachman

doi:10.1651/c-2387

Cited by 65 publications

(59 citation statements)

References 23 publications

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“…Positive allometry for females is probably related to the fact that females incubate the eggs until they hatch. Larger brood pouch increase protection during egg deposition and incubation, optimizing the reproductive process (Nazari et al, 2003;Bauer, 2004).…”

Section: Discussionmentioning

confidence: 99%

Relative growth and sexual maturity of the freshwater shrimp Palaemon pandaliformis (Crustacea, Palaemonidae) in northeastern of Brazil (Canavieiras, Bahia)

Paschoal

Guimarães

Couto

2013

Iheringia, Sér. Zool.

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ABSTRACT. This study comprises the description of relative growth and sexual maturity of a population of Palaemon pandaliformis Stimpson, 1871 in Salsa River (Northeastern Brazil). Samples were collected monthly between September 2009 and August 2010. Females were larger, heavier, and showed a greater allometric coefficient (b) than male specimens. Only carapace length vs. pleura length in females presented a significant difference in the relative growth pattern, indicating a puberty moult. This relationship is strictly correlated to reproduction and its success rate in female shrimps. Estimated carapace length in 50% of mature females (CL 50 ) was 4.53 mm. It was not possible to compare obtained CL 50 results due to a lack of studies on this species. Comparison was based on the size of the smallest captured ovigerous female (3.81 CL mm), which is within the scope of recorded size for estuaries located in higher latitudes. This study reveals the lack of research on this genre in freshwater environments on a national and global scale. KEYWORDS.Caridea, allometric growth, morphometric relationships. RESUMO.Crescimento relativo e maturidade sexual de Palaemon pandaliformis (Crustacea, Palaemonidae) no Nordeste do Brasil (Canavieiras, Bahia). Foram descritos o crescimento relativo e a maturidade sexual de uma população de Palaemon pandaliformis Stimpson, 1871 do rio Salsa (Nordeste do Brasil). As coletas foram realizadas mensalmente entre setembro de 2009 e agosto de 2010. As fêmeas foram maiores, mais pesadas e exibiram um coeficiente alométrico (b) maior que os machos. Apenas a relação comprimento de carapaça vs. comprimento de pleura nas fêmeas, apresentou uma diferença significativa no padrão de crescimento relativo, evidenciando a muda da puberdade. Esta relação é estritamente correlacionada aos eventos reprodutivos e ao sucesso deste em fêmeas de carídeos. O comprimento da carapaça em que 50% das fêmeas estão maduras (CL 50 ) foi estimado em 4,53 mm. Não foi possível comparar os resultados de CL 50 obtidos devido à falta de estudos enfocando a espécie. A comparação foi feita através do tamanho da menor fêmea ovígera capturada (3,81 CL mm), o qual está dentro da amplitude de tamanho registrada para estuários localizados em latitudes mais elevadas. Este trabalho aponta a falta de estudos para este gênero em ambientes dulceaquícolas, uma vez que estes são raros, mesmo em escala nacional e global. PALAVRAS-CHAVE.Caridea, crescimento alométrico, relações morfométricas.

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Section: Discussionmentioning

confidence: 99%

Relative growth and sexual maturity of the freshwater shrimp Palaemon pandaliformis (Crustacea, Palaemonidae) in northeastern of Brazil (Canavieiras, Bahia)

Paschoal

Guimarães

Couto

2013

Iheringia, Sér. Zool.

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“…Images were analysed using ImageJ ® software version 1.45. The samples were measured according to AnGer & moreira (1998) and Nazari et al (2003). For both sexes we measured carapace (CL) and total length (TL).…”

Section: Measurementsmentioning

confidence: 99%

“…Brood pouch volume (BPV) of the ovigerous females was estimated considering PL, PH and PD (Nazari et al 2003). The relative growth of CL, TL and W vs. BPV was also determined (see "Measurements" section for further details).…”

Section: Reproductionmentioning

confidence: 99%

“…Only females with eggs in the initial phase of development (stage I) were analysed given the possibility of potential egg loss during incubation (Nazari et al 2003). The correlation coefficient was calculated to evaluate the association between fecundity and values of CL, TL, W, and BPV.…”

Section: Reproductionmentioning

confidence: 99%

“…The abdomen and their segments suffer morphological alterations that facilitate protection during deposition, incubation and spawning (Bauer 2004). Larger brood pouches would increase the fecundity and protection of embryos during egg deposition and incubation, and consequently optimize the reproductive process (Nazari et al 2003, Bauer 2004. Bauer (2004) states that in females of Caridea, the main determining factor of the number of eggs laid is body size.…”

Section: Reproductionmentioning

confidence: 99%

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Growth and reproductive biology of the amphidromous shrimp Palaemon pandaliformis (Decapoda: Caridea) in a Neotropical river from northeastern Brazil

Paschoal¹,

Guimarães²,

Couto³

2016

Zoologia (Curitiba)

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Exploring developmental gene toolkit and associated pathways in a potential new model crustacean using transcriptomic analysis

et al. 2016

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The crustaceans are one of the largest, most diverse, and most successful groups of invertebrates. The diversity among the crustaceans is also reflected in embryonic development models. However, the molecular genetics that regulates embryonic development is not known in those crustaceans that have a short germ-band development with superficial cleavage, such as Macrobrachium olfersi. This species is a freshwater decapod and has great potential to become a model for developmental biology, as well as for evolutionary and environmental studies. To obtain sequence data of M. olfersi from an embryonic developmental perspective, we performed de novo assembly and annotation of the embryonic transcriptome. Using a pooling strategy of total RNA, paired-end Illumina sequencing, and assembly with multiple k-mers, a total of 25,636,097 pair reads were generated. In total, 99,751 unigenes were identified, and 20,893 of these returned a Blastx hit. KEGG pathway analysis mapped a total of 6866 unigenes related to 129 metabolic pathways. In general, 21,845 unigenes were assigned to gene ontology (GO) categories: molecular function (19,604), cellular components (10,254), and biological processes (13,841). Of these, 2142 unigenes were assigned to the developmental process category. More specifically, a total of 35 homologs of embryonic development toolkit genes were identified, which included maternal effect (one gene), gap (six), pair-rule (six), segment polarity (seven), Hox (four), Wnt (eight), and dorsoventral patterning genes (three). In addition, genes of developmental pathways were found, including TGF-β, Wnt, Notch, MAPK, Hedgehog, Jak-STAT, VEGF, and ecdysteroid-inducible nuclear receptors. RT-PCR analysis of eight genes related to embryonic development from gastrulation to late morphogenesis/organogenesis confirmed the applicability of the transcriptome analysis.

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Comparisons of Fecundity, Egg Size, and Egg Mass Volume of the Freshwater Prawns Macrobrachium Potiuna and Macrobrachium Olfersi (Decapoda, Palaemonidae)

Cited by 65 publications

References 23 publications

Relative growth and sexual maturity of the freshwater shrimp Palaemon pandaliformis (Crustacea, Palaemonidae) in northeastern of Brazil (Canavieiras, Bahia)

Relative growth and sexual maturity of the freshwater shrimp Palaemon pandaliformis (Crustacea, Palaemonidae) in northeastern of Brazil (Canavieiras, Bahia)

Growth and reproductive biology of the amphidromous shrimp Palaemon pandaliformis (Decapoda: Caridea) in a Neotropical river from northeastern Brazil

Exploring developmental gene toolkit and associated pathways in a potential new model crustacean using transcriptomic analysis

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