2016
DOI: 10.1163/1937240x-00002467
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Abstract: A comparison was made of the metabolism, nitrogenous excretion, growth, oxidized energy substrate, ingestion rate, and fecal production of the males of three morphotypes (CC, GC1, and GC2) of the palaemonid shrimp Macrobrachium amazonicum (Heller, 1862). The proportion of these morphotypes in the population is fixed, and individuals can change from one type to another (TC to CC, CC to GC1, and GC1 to GC2) to maintain this proportion. The three morphotypes were evaluated for 30 days, during which individuals we… Show more

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Cited by 22 publications
(8 citation statements)
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“…In addition to the different morphological features, these specimens exhibit distinct physiological differences, mainly in the pattern of growth, activity, function in the population, and reproductive behavior (Augusto & Valenti, 2016). Due to the existence of morphotypes, M. amazonicum populations generally have larger males than females (Silva et al, 2005;Flexa et al, 2005;Bentes et al, 2011).…”
Section: Population Structure and Mortalitymentioning
confidence: 99%
See 1 more Smart Citation
“…In addition to the different morphological features, these specimens exhibit distinct physiological differences, mainly in the pattern of growth, activity, function in the population, and reproductive behavior (Augusto & Valenti, 2016). Due to the existence of morphotypes, M. amazonicum populations generally have larger males than females (Silva et al, 2005;Flexa et al, 2005;Bentes et al, 2011).…”
Section: Population Structure and Mortalitymentioning
confidence: 99%
“…Macrobrachium amazonicum also displays marked plasticity in terms of its morphology and ecology (Freire et al, 2012), as well as genetic (Vergamini et al, 2011;Weiss et al, 2015), physiological (Boudour-Boucheker et al, 2013Augusto & Valenti, 2016), and behavioral differences (Pantaleão et al, 2014) that allow it to survive under the varied environmental conditions of its different habitats (Nóbrega et al, 2014). These habitats range from brackish-water to freshwater environments (Maciel & Valenti, 2009), where the species often represents the largest biomass (Odinetz-Collart, 1993), including estuaries and rivers of various sizes (Bentes et al, 2011).…”
Section: Introductionmentioning
confidence: 99%
“…Regardless of their life history (amphidromous or hololimnetic), four morphotypes have been described for male prawns of M. amazonicum: translucent claw (TC), cinnamon claw (CC), green claw 1 (GC1) and green claw 2 (GC2) (Moraes- Riodades and Valenti, 2004;Pantaleão et al, 2014). Dominant males (GC1 and GC2) have selective advantages over submissive individuals (TC and CC) such as obtaining more food resources and territories, and possibly more matings (Augusto and Valenti, 2016;Ibrahim, 2011). Specimens were separated into morphotypes based on macroscopic visual characteristics (body size, cheliped color, angles of the spines on the carpus and propodus, and the pubescence on dactyls) and then measured using an analog caliper (0.02 mm) following the anatomical portions established by Moraes- Riodades and Valenti (2004) and Pantaleão et al (2014).…”
Section: Sampling Morphotyping and Measurementmentioning
confidence: 99%
“…This species is economically important in the Brazilian aquaculture and is highly consumed in northern and northeastern Brazil (Maciel and Valenti, 2009;Odinetz-Collart and Moreira, 1993). In addition, M. amazonicum is highly variable regarding its morphology, reproduction and phenotypic plasticity, allowing it to colonize several aquatic environments (Augusto and Valenti, 2016;Maciel and Valenti, 2009;Odinetz-Collart and Rabelo, 1996;Vergamini et al, 2011). In estuaries, this species has an amphidromous life history (Bauer, 2013;Meireles et al, 2013), but populations of M. amazonicum that recently colonized lentic environments became hololimnic (Pantaleão et al, 2014;Paschoal and Zara, 2017).…”
Section: Introductionmentioning
confidence: 99%
“…Os machos de M. amazonicum apresentam quatros morfotipos, que se diferem quanto às características morfológicas, com destaque ao tamanho dos quelípides e à coloração (Moraes-Riodades & Valenti, 2004;Santos et al, 2006). Além das diferenças morfológicas, os diferentes grupos também apresentam diferenças fisiológicas entre si (Augusto & Masui, 2014;Augusto & Valenti, 2016).…”
Section: Lista De Figurasunclassified