Peixes de água doce da Mata Atlântica. Naércio A. Menezes Museu de Zoologia da USP

Transcription

1 Peixes de água doce da Mata Atlântica Naércio A. Menezes Museu de Zoologia da USP

2 Mapa da Mata Atlântica sensu strictu com domínios 25 e 26 definidos por Hueck & Seibert (1981) 309 species listed 267 endemic

3 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

4 Another true glandulocaudine, Glandulocauda melanogenys from the upper Rio Tietê in the Atlantic Forest of eastern Brazil. Male above, female below.

5 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

6 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

7 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

8 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

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10 Double lines correspond to main axes of Quaternary tectonics in the area

11 Pequenos riachos em áreas florestadas

12 Córrego Furnas, Parque Estadual de Intervales, SP

13 Riacho típico de águas negras no sul da Bahia

14 540 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

15 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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17 Astyanax cf. bimaculatus

18 Oligosarcus hepsetus

19 Hoplias lacerdae

20 Rio Ribeira de Iguape, Iguape, SP

21 Lago dentro da floresta, Parque Estadual de Intervales

22 Lago dentro da floresta, Parque Estadual de Intervales

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24 7 Deuterodon iguape

25 Rachoviscus crassiceps

26 Rachoviscus graciliceps

27 Spintherobolus broccae

28 Glandulocauda melanogenys

29 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

30 Mimagoniates lateralis

31 Mimagoniates microlepis

32 Mimagoniates rheocharis

33 Mimagoniates sylvicola

34 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 caudalfin lobe. All Stevardiinae have scales modified from the base of the lower caudal-fin lobe. Drawing by Sara Fink

35 Pseudocorynopoma heterandria

36 Characidium lauroi

37 Hoplias lacerdae

38 Siluriformes

39 Glanidium melanopterus

40 Parauchenipterus striatulus

41 Callichthys callichthys

42 Corydoras lacerdai

43 Acentronichthys leptos

44 Hemipsilichthys gobio

45 Hisonotus gibbosus

46 Ancistrus multispinnis

47 Hartia garavelloi

48 Kronichthys subteres

49 Microglanis cottoides

50 Trichomycterus davisi

51 GYMNOTIFORMES

52 Gymnotus carapo

53 Cyprinodontiformes

54 Campellolebias brucei

55 Leptolebias aureoguttatus

56 Nematolebias whitei

57 Rivulus janeiroensis

58 PERCIFORMES

59 Australoheros facetus

60 Crenichla lacustris

61 Gymnogeophagus gymnogenys