Morphometry, frequency and ultrastructure of male germ cells in morphotypes of the freshwater prawn Macrobrachium amazonicum (Decapoda: Palaemonidae)

Silva, Gicelle M.F.; Mendes, Yanne A.; Viana, Ivana Kerly S.; Gonçalves, Liziane A.B.; Oliveira, Renata S.; Rocha, Rossineide Martins da; Ferreira, María Auxiliadora Pantoja

doi:10.1016/j.jcz.2018.11.002

Cited by 3 publications

(4 citation statements)

References 46 publications

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“…The occurrence of morphotype differences in populations of Macrobrachium from inland streams, as reported here, is uncommon. These environments have lower food availability than estuaries and larger rivers (Chanton & Lewis, ; González‐Gordillo & Rodrigues, ), where multiple morphotypes have commonly been recorded in M. amazonicum (Freire et al, ; Lima et al, ; Silva et al, ). In general, prawn species from inland streams, such as M. brasiliense , have an abbreviated larval development (Anger, ; Jalihal, Sankolli, & Shenoy, ), which is an adaptation to low nutrient availability.…”

Section: Discussionmentioning

confidence: 99%

“…Taking M. amazonicum as an example, several studies were made after the description of morphotypes (Moraes- Riodades & Valenti, 2004), and reported the presence or absence of multiple morphotypes, depending on the population. Among the studies that found multiple morphotypes in M. amazonicum, many addressed estuarine populations (Flexa, Silva, & Cintra, 2005;Freire, Bentes, Fontes, & Silva, 2017;Freire, Marques, & Silva, 2012;Lima et al, 2014;Lucena-Fredou, Rosa Filho, Silva, & Azevedo, 2010;Santos, Sampaio, & Soares-Filho, 2006;Silva et al, 2019) and fewer addressed populations from inland rivers (Pantaleão et al, 2014;Vergamini, Pileggi, & Mantelatto, 2011).…”

Section: Species Ofmentioning

confidence: 99%

“…These environments have lower food availability than estuaries and larger rivers (Chanton & Lewis, 2002;González-Gordillo & Rodrigues, 2003), where multiple morphotypes have commonly been recorded in M. amazonicum (Freire et al, 2017;Lima et al, 2014;Silva et al, 2019). In general, prawn species from inland streams, such as M.…”

Section: The Occurrence Of Morphotype Differences In Populations Ofmentioning

confidence: 99%

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Male morphotypes of the freshwater prawn Macrobrachium brasiliense (Decapoda: Caridea: Palaemonidae)

Nogueira

Pantaleão

Almeida

et al. 2020

Invertebrate Biology

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Some decapod species have intraspecific morphological variations that result in distinct adult morphotypes that influence the population structure, social dominance, and reproduction of the population. Here we investigated whether this differentiation into morphotypes occurs in adult males of Macrobrachium brasiliense, through the analysis of relative growth and morphology. Specimens were collected in the region of Uberlândia, Minas Gerais state, southeastern Brazil. Seven dimensions of each male were measured: carapace length (CL), ischium length, merus length, carpus length, propodus length, dactylus length, and major cheliped length. Principal component analysis, clustering, and discriminant analyses were used to identify possible morphotypes. The analysis of relative growth was employed to estimate the growth patterns of body structures (dependent variables) in relation to the CL (independent variable). Two morphotypes were identified: Mirim, which has less developed chelipeds (23.31 ± 3.08 mm) with fewer spines, and Açu, which has larger chelipeds (41.39 ± 8.14 mm) with many well‐developed spines, especially in the merus. Most morphometric relationships differed significantly (p < .01) between the two morphotypes. The chelipeds were useful characters for the identification of the morphotypes of M. brasiliense, corroborating previous descriptions of the genus. We provide a detailed description of the main macroscopic characteristics that differed between morphotypes, which will enable their identification in future studies. Our results contribute to the knowledge of the population biology of M. brasiliense and should be considered in future investigations, since the presence of these male morphotypes probably influences the reproductive biology and population ecology of the species.

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Section: Discussionmentioning

confidence: 99%

Section: Species Ofmentioning

confidence: 99%

Section: The Occurrence Of Morphotype Differences In Populations Ofmentioning

confidence: 99%

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Male morphotypes of the freshwater prawn Macrobrachium brasiliense (Decapoda: Caridea: Palaemonidae)

Nogueira

Pantaleão

Almeida

et al. 2020

Invertebrate Biology

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“…Among caridean prawns, the genus Macrobrachium is of economic and ecological importance (Lima, Garcia, & Silva, ; Moreno, Graziani, & Orta, ). Distinct male reproductive morphotypes have been described in Macrobrachium species such as Macrobrachium rosenbergii (Chow et al, ; Dougherty & Sandifer, ; Poljaroen et al, ; Sagi et al, ), Macrobrachium australiense (Butcher & Fielder, ), Macrobrachium dayanum (Tripathi & Pandey, ), Macrobrachium nipponense (Yang, Du, & Lai, ), and Macrobrachium amazonicum (Silva et al, ; Silva et al, ). All species studied produce a large number of spermatozoa, which contributes to their reproductive success (Sagi et al, ; Silva et al, ).…”

Section: Introductionmentioning

confidence: 99%

Morphology of the male reproductive system of freshwater prawn Macrobrachium carcinus (Decapoda, Caridea): Functional and comparative aspects

Ruiz

Vidal

Gardinal

et al. 2020

Journal of Morphology

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Testes and vasa deferentia are parts of the male reproductive system of decapod crustaceans. Both organs show morphological differences among decapod species in terms of anatomical and histological patterns reflecting the diversity of this group.Describing these features may assist in systematics, phylogenetics, and studies of reproductive behavior, especially for species of commercial interest, such as Macrobrachium carcinus, a native American species that, unusually for this genus, has no precopulation courting behavior. This study aims to describe the reproductive morphology and spermatogenesis of the male freshwater prawn M. carcinus. The male reproductive system of this species consisted of lobed testes connected to the vasa deferentia. The testis of M. carcinus was divided into several lobules. Each lobule was formed by a cluster of germ cells surrounded by connective tissue and nurse cells.This microscopic anatomy and histology of the testicular histoarchitecture has been described for many species of Decapoda and may represent a derived design of the testes. Unlike that in other decapod species, spermatogenesis proceeds in short transitory phases that produce spermatozoa at high concentrations and frequencies, corroborating the uncommon male reproductive behavior of this species. In the spermatic pathway, the lobules develop and fuse before releasing spermatozoa from the testes; however, this process has not been observed in decapods, yet. The neutral compounds secreted by the vas deferens are important for sperm nutrition as females secrete a substance for spermatophore adhesion during reproduction. This study presents different features and dynamics of the spermatogenic process in the male reproductive system of M. carcinus that have not yet been presented in the literature for decapods.

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Male reproductive system of the freshwater prawn Macrobrachium brasiliense (Decapoda: Palaemonidae): Notes on spermatophore formation and sperm count

et al. 2023

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Morphometry, frequency and ultrastructure of male germ cells in morphotypes of the freshwater prawn Macrobrachium amazonicum (Decapoda: Palaemonidae)

Cited by 3 publications

References 46 publications

Male morphotypes of the freshwater prawn Macrobrachium brasiliense (Decapoda: Caridea: Palaemonidae)

Male morphotypes of the freshwater prawn Macrobrachium brasiliense (Decapoda: Caridea: Palaemonidae)

Morphology of the male reproductive system of freshwater prawn Macrobrachium carcinus (Decapoda, Caridea): Functional and comparative aspects

Male reproductive system of the freshwater prawn Macrobrachium brasiliense (Decapoda: Palaemonidae): Notes on spermatophore formation and sperm count

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