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The influence of upwelling on the diversity and distribution of marine shrimp (Penaeoidea and Caridea) in two tropical coastal areas of southeastern Brazil
Abstract Two coastal locations situated inside and outside an upwelling area were investigated to assess the influence of environmental factors on the structure of marine shrimp assemblages. The
The influence of environmental variables in the reproductive performance of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) females in a continental population.
TLDR
A correlation between the reproductive parameters and the environmental variables analyzed found corroborates the hypothesis that wide variation in reproductive parameters in the geographical distribution of M. amazonicum is related to the environmental characteristics in which populations are inserted.
Inferring population connectivity across the range of distribution of the stiletto shrimp Artemesia longinaris Spence Bate, 1888 (Decapoda, Penaeidae) from DNA barcoding: implications for fishery
TLDR
Findings indicate a continuous gene flow among the populations analyzed, suggesting that the phenotypic variation in Artemesia longinaris is a consequence of different environmental conditions among the localities.
A multigene and morphological analysis expands the diversity of the seabod shrimp Xiphopenaeus Smith, 1869 (Decapoda: Penaeidae), with descriptions of two new species
TLDR
An integrative approach was employed to define the species of Xiphopenaeus and the morphological characters needed to differentiate them and two new species are described and illustrated.
CRYPSIS IN THE MUD CRAB PANOPEUS AMERICANUS SAUSSURE, 1857 (DECAPODA, PANOPEIDAE): RELATIONSHIP TO SEXUAL MATURITY
TLDR
Analysis of cryptic colouration patterns in mud crabs, Panopeus americanus, finds that individuals of the white homogeneous colouration can be classified as non-reproductive and that there is an overlap between the size at which 50% of females reached the dark homogeneity colouration and their functional sexual maturity.
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil
TLDR
Both sexes presented low longevity, intense growth rates and small asymptotic sizes in comparison to those registered in the literature, which is likely due to high instability in the system caused by environmental variations and anthropic influences.
Diel comparison of the catch and size of the shrimp Artemesia longinaris (Dendrobranchiata, Penaeidae) in the Ubatuba region, northern coast of the state of São Paulo
TLDR
The sediment type and life cycle of the species appeared to modify the yield of shrimp during the periods analysed, with a change in the burying pattern: individuals were active during the day as well as at night.
Population dynamics, relative growth and sex change of the protandric simultaneous hermaphrodite Exhippolysmata oplophoroides (Caridea: Lysmatidae) close to an upwelling area
TLDR
It is found that sex change influences the relative growth of body structures such as the second pereopods, appendices internae, and appendix masculina, and hypotheses on the adaptive value of such allometric growth are proposed.
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