Figure 1.
Map of the current known distribution of cladocerans in Alagoas State, Brazil, from literature (white circles) and original samples (red circles). Numbers (1-11) identify the sampling sites according to Tab. 1. Background colors represent the two freshwater ecoregions in the state coincident with the Brazilian hydrographic regions (SFHR, São Francisco Hydrographic Region; ENAHR, Eastern Northeast Atlantic Hydrographic Region).
Figure 2.
Some of the sampling sites. A-D, site 9, a wetland in the Santo Antônio Grande River floodplain, municipality of Barra de Santo Antônio (A, arrow indicates water flow in the marginal flooded woods; B, flooded woods; C, D, open area). E, F, site 10, wetland close to AL-101 road, Antunes beach, municipality of Maragogi. Photographs: L.M.A. Elmoor-Loureiro.
Figure 3.
Rarefaction analysis based on the number of sites sampled for cladocerans in the Alagoas State. The accumulation curve does not reach an asymptote.
Figure 4.
Cyclestheria hislopi from Alagoas State, Brazil. A, habitus; B, second antenna; C, caudal part. Photographs: L.M.A. Elmoor-Loureiro.
Figure 5.
Cladocerans from Alagoas Brazil. A-C, Acroperus tupinamba (A, habitus; B, postabdomen; C, postero-ventral corner of carapace). D-G, Anthalona verrucosa (D, habitus; E, trunk limb I, setae on inner distal lobe; F, postabdomen; G, head pores - mp, main pores; lp, cosmarium-like lateral pores). H-J, Biapertura ossiani (H, habitus single specimen available partially damaged; I, posteroventral corner of carapace; J, basal spine of the postabdominal claw; arrow shows the group of setules arising proximal to its base). K-M, Alonella cf. clathratula (K, habitus; L, postabdomen; M, postero-ventral corner of carapace). N-Q, Alonella dadayi (N, habitus; O, P, posteroventral corner of carapace showing a variable number of denticles in a single specimen; Q, postabdomen). Phase contrast is used in C, E, G, I, J, M, O, P, and Q. Photographs: L.M.A. Elmoor-Loureiro.
Figure 6.
Cladocerans from Alagoas Brazil. A-D, Chydorus eurynotus (A, habitus; B, posteroventral corner of carapace; C, postabdominal claw; arrow shows denticles on the dorsal side; D, trunk limb I, arrow shows robust seta on the inner distal lobe). E-G, Chydorus nitidulus (E, habitus; F, posteroventral corner of carapace; G, postabdomen). H, Ephemeroporus tridentatus, postabdomen exemplifying the morphology of the genus. I-K, Ephemeroporus barroisi s.l. (I, habitus; J, postero-ventral corner of carapace; K, labrum). L-N, Ephemeroporus hybridus (L, habitus; M, postero-ventral corner of carapace; N, labrum). O-Q, Ephemeroporus tridentatus (O, habitus; P, postero-ventral corner of carapace; Q, labrum). Phase contrast is used in B, F, H, J, K, M, N, P, and Q. Photographs: L.M.A. Elmoor-Loureiro.
Figure 7.
Cladocerans from Alagoas Brazil. A-C, Karualona muelleri (A, habitus; B, postabdomen; C, postero-ventral corner of carapace). D-H, Leydigiopsis ornata (D, habitus; E, labrum; arrow indicates the protruding edge; F, third limb; numbers indicate the exopodite setae, being seta 7 longer than seta 6; G, postabdominal distal end; arrow shows the basal claw spine; H, postabdominal claw; arrow shows multifid basal spine). I-K, Oxyurella ciliata (I, habitus; J, postabdominal distal end; K, labrum; arrow indicates marginal fine setules). L, M, Oxyurella longicaudis (L, habitus; M, postabdominal distal end). Phase contrast is used in B, F, H, and K. Photographs: L.M.A. Elmoor-Loureiro.
Figure 8.
Cladocerans from Alagoas State, Brazil. A, B, Ilyocryptus spinifer (A, habitus; B, postabdomen). C-F, Grimaldina freyi (C, habitus; D, antenna largest seta; E, antennule; F, postabdomen). G-J, Macrothrix elegans (G, habitus; H, head with rod-like antennule and arrow showing supraocular; I, abdominal setae insertion on a dorsal prominence of postabdomen; J, antennal exopod, distal spines on second segment numbered, spine 1 about two times spine 2). K-N, Macrothrix squamosa (K, habitus; L, distally widened antennule; M, abdominal setae insertion without postabdominal dorsal prominence; N, carapace dorsal rim). Phase contrast is used in B, D, and N. Photographs: L.M.A. Elmoor-Loureiro.
Figure 9.
Cladocerans from Alagoas State, Brazil. A-C, Ceriodaphnia cornuta (A, habitus; B, spine on rostrum; C, postabdomen). D-F, Moina minuta (D, habitus; E, postabdomen, arrow indicates the bifid spine; F, postabdominal claw; arrow shows the strong basal pecten). G-I, Moinodaphnia macleayi (G, habitus; H, postabdomen distal end; I, antennal exopod, distal three setae and a long spine shown by arrow). J-L, Diaphanosoma brevireme (J, habitus; K, antenna; L, postero-ventral margin of carapace). M-S, Sarsilatona serricauda (M, habitus; N, antennule; O, antennal exopod distal, spines on second segment numbered; P-S, postabdomen, dorsal preanal protuberances numbered). Phase contrast is used in F and L. Photographs: L.M.A. Elmoor-Loureiro.
So much with so little: new records of Cladocera and Cyclestherida (Branchiopoda) for Alagoas State, Brazil
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