Diversidade de peixes de água doce da Mata Atlântica
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Transcript of Diversidade de peixes de água doce da Mata Atlântica
![Page 1: Diversidade de peixes de água doce da Mata Atlântica](https://reader034.fdocument.pub/reader034/viewer/2022052213/589af49e1a28ab32468bd3c6/html5/thumbnails/1.jpg)
Peixes de água doce da Mata
Atlântica
Naércio A. Menezes
Museu de Zoologia da USP
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Mapa da Mata Atlântica “sensu strictu” com domínios 25 e 26 definidos
por Hueck & Seibert (1981)
309 species listed
267 endemic
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A true member of the Glandulocaudinae: A male Lophiobrycon weitzmani a relatively
new glandulocaudine species and genus from Minas Gerais, Brazil. Although this fish
is relatively un-derived regarding its caudal organ it does have several of its own
derived features such as a muscular modified urogenital papilla in the female that
appears designed to aid in transporting sperm cells to the ovary. Also, note the
elongate orange adipose fin.
Photo by Ricardo M. C. Castro
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Another true glandulocaudine, Glandulocauda melanogenys from the
upper Rio Tietê in the Atlantic Forest of eastern Brazil. Male above,
female below.
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The osteology of the tail fin of Glandulocauda melanogenys. Other than some
modifications of the scales from the upper lobe of the caudal fin the only notable
modification is the bowing of fin rays 11 and 12. These two fin rays have pheromone
club cells scattered along at least ¾ of their lengths. The tail fin of Lophiobrycon
weitzmani is very similar.
Drawings by Sara Fink
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More Glandulocaudinae: Two male Mimagoniates lateralis. This species is
from black water streams emptying into the Atlantic Ocean, Atlantic Forest
area of Brazil. Members of this genus have a more derived tail-fin organ than
species of Glandulocauda or Lophiobrycon.
Photo by Hans-Georg Evers
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A photo of two male Mimagoniates lateralis showing color as found in
the field in black water. In aquaria the red color tends to fade and
disappear as seen in the previous slide.
Photo by Rosario LaCorte
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The osteology of the tail and its accompanying pheromone organ of the male
Mimagoniates lateralis. Here the fin rays 12 and 13 have become modified to form a
small pocket that is in part covered by modified scales of the dorsal caudal-fin lobe.
Most of ESthe pheromone club cells are confined to the pocket. Presumably the
pocket acts as a pump when the male flexes his tail toward the female during
courtship. All members of the Glandulocaudinae have modified caudal scales from
the dorsal caudal-fin lobe. All Stevardiinae have scales modified from the base of the
lower caudal-fin lobe.
Drawing by Sara Fink
![Page 9: Diversidade de peixes de água doce da Mata Atlântica](https://reader034.fdocument.pub/reader034/viewer/2022052213/589af49e1a28ab32468bd3c6/html5/thumbnails/9.jpg)
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Double lines correspond to main axes of Quaternary tectonics in the area
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Pequenos riachos em áreas florestadas
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Córrego Furnas, Parque Estadual de Intervales, SP
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Riacho típico de águas negras no sul da Bahia
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540 small-scale watersheds
ranging from 40 to 9,177km²
819 species – ca. 32% of
ichthyofauna considered as
restricted range.
22%of detected watersheds
overlap hydropower dams
and due to lack of monitoring
studies it is probable that the
220 species in those sites
are under high extinction risk
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Most watersheds(74%) have less than 30% of their area
formally protected
Most of the detected species (65%) are found in
watersheds within the Cerrado and Atlantic Forests
considered global conservation priorities due to high
endemism and habitat loss
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Astyanax cf. bimaculatus
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Oligosarcus hepsetus
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Hoplias lacerdae
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Rio Ribeira de Iguape, Iguape, SP
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Lago dentro da floresta, Parque Estadual de Intervales, SP
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Lago dentro da floresta, Parque Estadual de Intervales, SP
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7
Deuterodon iguape
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Rachoviscus crassiceps
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Rachoviscus graciliceps
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Spintherobolus broccae
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Glandulocauda melanogenys
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The osteology of the tail fin of Glandulocauda melanogenys. Other than some
modifications of the scales from the upper lobe of the caudal fin the only notable
modification is the bowing of fin rays 11 and 12. These two fin rays have pheromone
club cells scattered along at least ¾ of their lengths. The tail fin of Lophiobrycon
weitzmani is very similar.
Drawings by Sara Fink
![Page 30: Diversidade de peixes de água doce da Mata Atlântica](https://reader034.fdocument.pub/reader034/viewer/2022052213/589af49e1a28ab32468bd3c6/html5/thumbnails/30.jpg)
Mimagoniates lateralis
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Mimagoniates microlepis
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Mimagoniates rheocharis
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Mimagoniates sylvicola
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The osteology of the tail and its accompanying pheromone organ of the male
Mimagoniates lateralis. Here the fin rays 12 and 13 have become modified to form a
small pocket that is in part covered by modified scales of the dorsal caudal-fin lobe.
Most of the pheromone club cells are confined to the pocket. Presumably the pocket
acts as a pump when the male flexes his tail toward the female during courtship. All
members of the Glandulocaudinae have modified caudal scales from the dorsal caudal-
fin lobe. All Stevardiinae have scales modified from the base of the lower caudal-fin
lobe.
Drawing by Sara Fink
![Page 35: Diversidade de peixes de água doce da Mata Atlântica](https://reader034.fdocument.pub/reader034/viewer/2022052213/589af49e1a28ab32468bd3c6/html5/thumbnails/35.jpg)
Pseudocorynopoma heterandria
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Characidium lauroi
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Hoplias lacerdae
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Siluriformes
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Glanidium melanopterus
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Parauchenipterus striatulus
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Callichthys callichthys
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Corydoras lacerdai
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Acentronichthys leptos
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Hemipsilichthys gobio
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Hisonotus gibbosus
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Ancistrus multispinnis
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Hartia garavelloi
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Kronichthys subteres
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Microglanis cottoides
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Trichomycterus davisi
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GYMNOTIFORMES
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Gymnotus carapo
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Cyprinodontiformes
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Campellolebias brucei
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Leptolebias aureoguttatus
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Nematolebias whitei
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Rivulus janeiroensis
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PERCIFORMES
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Australoheros facetus
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Crenichla lacustris
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Gymnogeophagus gymnogenys