Apistogramma eremnopyge, new species, is described from the Río Pintuyacu, Río Itaya drainage (Am... more Apistogramma eremnopyge, new species, is described from the Río Pintuyacu, Río Itaya drainage (Amazon basin) in Peru. Apistogramma eremnopyge is unique in the genus in possessing a dark blotch on the lower caudal peduncle. It is otherwise most similar to A. bitaeniata, with males pos- sessing extended dorsal fin lappets, and prolonged rays dorsally and ventrally in the caudal fin.
Kaschner, K., Ready, JS, Agbayani, E., Kesner-Reyes, K., Rius-Barile, J., Eastwood, PD, South, AB... more Kaschner, K., Ready, JS, Agbayani, E., Kesner-Reyes, K., Rius-Barile, J., Eastwood, PD, South, AB, Kullander, SO, Rees, T., Watson, R., Pauly, D. and Froese, Rainer (2011) Using 'Aquamaps' for representing species distribution in Regional Seas The State of Biodiversity and Fisheries in Regional Seas. Fisheries Centre Research Reports, 19 . Fisheries Centre, University of British Columbia, Vancouver, BD, Canady, pp. 17-21.
Mimesis is a relatively widespread phenomenon among reef fish, but the ontogenetic processes rele... more Mimesis is a relatively widespread phenomenon among reef fish, but the ontogenetic processes relevant for mimetic associations in fish are still poorly understood. In the present study, the allometric growth of two allopatric leaf-mimetic species of ephippid fishes, Chaetodipterus faber from the Atlantic and Platax orbicularis from the Indo-Pacific, was analyzed using ten morphological variables. The development of fins was considered owing to the importance of these structures for mimetic behaviors during early life stages. Despite the anatomical and behavioral similarities in both juvenile and adult stages, C. faber and P. orbicularis showed distinct patterns of growth. The overall shape of C. faber transforms from a rounded-shape in mimetic juveniles to a lengthened profile in adults, while in P. orbicularis, juveniles present an oblong profile including dorsal and anal fins, with relative fin size diminishing while the overall profile grows rounder in adults. Although the two species are closely-related, the present results suggest that growth patterns in C. faber and P. orbicularis are different, and are probably independent events in ephippids that have resulted from similar selective processes.
... Glaúcia C. Silva-Oliveira1,2, Jonathan Stuart Ready1, Gabriel Iketani1, Sandra Bastos1, Grazi... more ... Glaúcia C. Silva-Oliveira1,2, Jonathan Stuart Ready1, Gabriel Iketani1, Sandra Bastos1, Grazielle Gomes1, Iracilda Sampaio1 and Cristiana Maciel1* 1Instituto ... gcos007@yahoo.com.br (GCSO), jonathan.ready@gmail.com (JSR), iketani.g@gmail.com (GI), sbastos@ufpa.b (SB ...
Squid of the genus Lolliguncula Steenstrup, 1881 are small bodied, coastal species capable of tol... more Squid of the genus Lolliguncula Steenstrup, 1881 are small bodied, coastal species capable of tolerating low salinity. Lolliguncula sp. are found exclusively in the New World, although only one of the four recognized species (Lolliguncula brevis) occurs in the Atlantic Ocean. Preliminary morphological analyses suggest that Lolliguncula brevis populations in the North and South Atlantic may represent distinct species. The principal objective of the present study was to verify the phylogenetic relationships within the genus and test for the presence of possible cryptic species. Both gene and species tree topologies indicated that Lolliguncula brevis specimens from the North and South Atlantic represent distinct phylogenetic clades. In contrast with previous studies, L. panamensis was identified as the basal species of the genus. Our results provide important insights into the phylogenetic relationships among the Lolliguncula specimens analyzed, and confirm the genetic separation of Lo...
Apistogramma eremnopyge, new species, is described from the Río Pintuyacu, Río Itaya drainage (Am... more Apistogramma eremnopyge, new species, is described from the Río Pintuyacu, Río Itaya drainage (Amazon basin) in Peru. Apistogramma eremnopyge is unique in the genus in possessing a dark blotch on the lower caudal peduncle. It is otherwise most similar to A. bitaeniata, with males pos- sessing extended dorsal fin lappets, and prolonged rays dorsally and ventrally in the caudal fin.
Kaschner, K., Ready, JS, Agbayani, E., Kesner-Reyes, K., Rius-Barile, J., Eastwood, PD, South, AB... more Kaschner, K., Ready, JS, Agbayani, E., Kesner-Reyes, K., Rius-Barile, J., Eastwood, PD, South, AB, Kullander, SO, Rees, T., Watson, R., Pauly, D. and Froese, Rainer (2011) Using 'Aquamaps' for representing species distribution in Regional Seas The State of Biodiversity and Fisheries in Regional Seas. Fisheries Centre Research Reports, 19 . Fisheries Centre, University of British Columbia, Vancouver, BD, Canady, pp. 17-21.
Mimesis is a relatively widespread phenomenon among reef fish, but the ontogenetic processes rele... more Mimesis is a relatively widespread phenomenon among reef fish, but the ontogenetic processes relevant for mimetic associations in fish are still poorly understood. In the present study, the allometric growth of two allopatric leaf-mimetic species of ephippid fishes, Chaetodipterus faber from the Atlantic and Platax orbicularis from the Indo-Pacific, was analyzed using ten morphological variables. The development of fins was considered owing to the importance of these structures for mimetic behaviors during early life stages. Despite the anatomical and behavioral similarities in both juvenile and adult stages, C. faber and P. orbicularis showed distinct patterns of growth. The overall shape of C. faber transforms from a rounded-shape in mimetic juveniles to a lengthened profile in adults, while in P. orbicularis, juveniles present an oblong profile including dorsal and anal fins, with relative fin size diminishing while the overall profile grows rounder in adults. Although the two species are closely-related, the present results suggest that growth patterns in C. faber and P. orbicularis are different, and are probably independent events in ephippids that have resulted from similar selective processes.
... Glaúcia C. Silva-Oliveira1,2, Jonathan Stuart Ready1, Gabriel Iketani1, Sandra Bastos1, Grazi... more ... Glaúcia C. Silva-Oliveira1,2, Jonathan Stuart Ready1, Gabriel Iketani1, Sandra Bastos1, Grazielle Gomes1, Iracilda Sampaio1 and Cristiana Maciel1* 1Instituto ... gcos007@yahoo.com.br (GCSO), jonathan.ready@gmail.com (JSR), iketani.g@gmail.com (GI), sbastos@ufpa.b (SB ...
Squid of the genus Lolliguncula Steenstrup, 1881 are small bodied, coastal species capable of tol... more Squid of the genus Lolliguncula Steenstrup, 1881 are small bodied, coastal species capable of tolerating low salinity. Lolliguncula sp. are found exclusively in the New World, although only one of the four recognized species (Lolliguncula brevis) occurs in the Atlantic Ocean. Preliminary morphological analyses suggest that Lolliguncula brevis populations in the North and South Atlantic may represent distinct species. The principal objective of the present study was to verify the phylogenetic relationships within the genus and test for the presence of possible cryptic species. Both gene and species tree topologies indicated that Lolliguncula brevis specimens from the North and South Atlantic represent distinct phylogenetic clades. In contrast with previous studies, L. panamensis was identified as the basal species of the genus. Our results provide important insights into the phylogenetic relationships among the Lolliguncula specimens analyzed, and confirm the genetic separation of Lo...
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