Evidence for hybridization-driven heteroplasmy maintained across generations in a ricefish endemic to a Wallacean ancient lake
In this study, we cloned the ND2 gene for some additional individuals with heterozygous sites and demonstrated that they are truly heteroplasmic. Phylogenetic analysis revealed that the extra haplotype within the heteroplasmic O. matanensis individuals clustered with haplotypes of O. marmoratus, a congeneric species inhabiting adjacent lakes. This indicated that the heteroplasmy originated from paternal leakage due to interspecific hybridization. The extra haplotype was unique and contained two non-synonymous substitutions. These findings demonstrate that this hybridization-driven heteroplasmy was maintained across generat...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Handung Nuryadi Ixchel F Mandagi Kawilarang W A Masengi Junko Kusumi Nobuyuki Inomata Kazunori Yamahira Source Type: research
Testing alternative hypotheses for the decline of cichlid fish in Lake Victoria using fish tooth time series from sediment cores
Biol Lett. 2024 Mar;20(3):20230604. doi: 10.1098/rsbl.2023.0604. Epub 2024 Mar 20.ABSTRACTLake Victoria is well known for its high diversity of endemic fish species and provides livelihoods for millions of people. The lake garnered widespread attention during the twentieth century as major environmental and ecological changes modified the fish community with the extinction of approximately 40% of endemic cichlid species by the 1980s. Suggested causal factors include anthropogenic eutrophication, fishing, and introduced non-native species but their relative importance remains unresolved, partly because monitoring data start...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Nare Ngoepe Alenya Merz Leighton King Giulia Wienhues Mary A Kishe Salome Mwaiko Pavani Misra Martin Grosjean Blake Matthews Colin Courtney Mustaphi Oliver Heiri Andrew Cohen Willy Tinner Moritz Muschick Ole Seehausen Source Type: research
Choice of molecular marker influences spatial patterns of phylogenetic diversity
Biol Lett. 2024 Mar;20(3):20230581. doi: 10.1098/rsbl.2023.0581. Epub 2024 Mar 20.ABSTRACTSpatial patterns of phylogenetic diversity (PD) are increasingly becoming relevant for conservation decisions. PD measures are based on phylogenies estimated from molecular data. This paper addresses the question of how different molecular markers impact PD spatial patterns. We first conducted a simple simulation to explore the effect of deep and shallow changes in topology (simulating variations in molecular markers), using ultrametric and non-ultrametric trees, and then used a dataset of Chilean flora with four sets of markers to as...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Federico Luebert Rosa A Scherson Source Type: research
Evidence for hybridization-driven heteroplasmy maintained across generations in a ricefish endemic to a Wallacean ancient lake
In this study, we cloned the ND2 gene for some additional individuals with heterozygous sites and demonstrated that they are truly heteroplasmic. Phylogenetic analysis revealed that the extra haplotype within the heteroplasmic O. matanensis individuals clustered with haplotypes of O. marmoratus, a congeneric species inhabiting adjacent lakes. This indicated that the heteroplasmy originated from paternal leakage due to interspecific hybridization. The extra haplotype was unique and contained two non-synonymous substitutions. These findings demonstrate that this hybridization-driven heteroplasmy was maintained across generat...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Handung Nuryadi Ixchel F Mandagi Kawilarang W A Masengi Junko Kusumi Nobuyuki Inomata Kazunori Yamahira Source Type: research
Testing alternative hypotheses for the decline of cichlid fish in Lake Victoria using fish tooth time series from sediment cores
Biol Lett. 2024 Mar;20(3):20230604. doi: 10.1098/rsbl.2023.0604. Epub 2024 Mar 20.ABSTRACTLake Victoria is well known for its high diversity of endemic fish species and provides livelihoods for millions of people. The lake garnered widespread attention during the twentieth century as major environmental and ecological changes modified the fish community with the extinction of approximately 40% of endemic cichlid species by the 1980s. Suggested causal factors include anthropogenic eutrophication, fishing, and introduced non-native species but their relative importance remains unresolved, partly because monitoring data start...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Nare Ngoepe Alenya Merz Leighton King Giulia Wienhues Mary A Kishe Salome Mwaiko Pavani Misra Martin Grosjean Blake Matthews Colin Courtney Mustaphi Oliver Heiri Andrew Cohen Willy Tinner Moritz Muschick Ole Seehausen Source Type: research
Choice of molecular marker influences spatial patterns of phylogenetic diversity
Biol Lett. 2024 Mar;20(3):20230581. doi: 10.1098/rsbl.2023.0581. Epub 2024 Mar 20.ABSTRACTSpatial patterns of phylogenetic diversity (PD) are increasingly becoming relevant for conservation decisions. PD measures are based on phylogenies estimated from molecular data. This paper addresses the question of how different molecular markers impact PD spatial patterns. We first conducted a simple simulation to explore the effect of deep and shallow changes in topology (simulating variations in molecular markers), using ultrametric and non-ultrametric trees, and then used a dataset of Chilean flora with four sets of markers to as...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Federico Luebert Rosa A Scherson Source Type: research
Evidence for hybridization-driven heteroplasmy maintained across generations in a ricefish endemic to a Wallacean ancient lake
In this study, we cloned the ND2 gene for some additional individuals with heterozygous sites and demonstrated that they are truly heteroplasmic. Phylogenetic analysis revealed that the extra haplotype within the heteroplasmic O. matanensis individuals clustered with haplotypes of O. marmoratus, a congeneric species inhabiting adjacent lakes. This indicated that the heteroplasmy originated from paternal leakage due to interspecific hybridization. The extra haplotype was unique and contained two non-synonymous substitutions. These findings demonstrate that this hybridization-driven heteroplasmy was maintained across generat...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Handung Nuryadi Ixchel F Mandagi Kawilarang W A Masengi Junko Kusumi Nobuyuki Inomata Kazunori Yamahira Source Type: research
Testing alternative hypotheses for the decline of cichlid fish in Lake Victoria using fish tooth time series from sediment cores
Biol Lett. 2024 Mar;20(3):20230604. doi: 10.1098/rsbl.2023.0604. Epub 2024 Mar 20.ABSTRACTLake Victoria is well known for its high diversity of endemic fish species and provides livelihoods for millions of people. The lake garnered widespread attention during the twentieth century as major environmental and ecological changes modified the fish community with the extinction of approximately 40% of endemic cichlid species by the 1980s. Suggested causal factors include anthropogenic eutrophication, fishing, and introduced non-native species but their relative importance remains unresolved, partly because monitoring data start...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Nare Ngoepe Alenya Merz Leighton King Giulia Wienhues Mary A Kishe Salome Mwaiko Pavani Misra Martin Grosjean Blake Matthews Colin Courtney Mustaphi Oliver Heiri Andrew Cohen Willy Tinner Moritz Muschick Ole Seehausen Source Type: research
Choice of molecular marker influences spatial patterns of phylogenetic diversity
Biol Lett. 2024 Mar;20(3):20230581. doi: 10.1098/rsbl.2023.0581. Epub 2024 Mar 20.ABSTRACTSpatial patterns of phylogenetic diversity (PD) are increasingly becoming relevant for conservation decisions. PD measures are based on phylogenies estimated from molecular data. This paper addresses the question of how different molecular markers impact PD spatial patterns. We first conducted a simple simulation to explore the effect of deep and shallow changes in topology (simulating variations in molecular markers), using ultrametric and non-ultrametric trees, and then used a dataset of Chilean flora with four sets of markers to as...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Federico Luebert Rosa A Scherson Source Type: research
Evidence for hybridization-driven heteroplasmy maintained across generations in a ricefish endemic to a Wallacean ancient lake
In this study, we cloned the ND2 gene for some additional individuals with heterozygous sites and demonstrated that they are truly heteroplasmic. Phylogenetic analysis revealed that the extra haplotype within the heteroplasmic O. matanensis individuals clustered with haplotypes of O. marmoratus, a congeneric species inhabiting adjacent lakes. This indicated that the heteroplasmy originated from paternal leakage due to interspecific hybridization. The extra haplotype was unique and contained two non-synonymous substitutions. These findings demonstrate that this hybridization-driven heteroplasmy was maintained across generat...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Handung Nuryadi Ixchel F Mandagi Kawilarang W A Masengi Junko Kusumi Nobuyuki Inomata Kazunori Yamahira Source Type: research
Testing alternative hypotheses for the decline of cichlid fish in Lake Victoria using fish tooth time series from sediment cores
Biol Lett. 2024 Mar;20(3):20230604. doi: 10.1098/rsbl.2023.0604. Epub 2024 Mar 20.ABSTRACTLake Victoria is well known for its high diversity of endemic fish species and provides livelihoods for millions of people. The lake garnered widespread attention during the twentieth century as major environmental and ecological changes modified the fish community with the extinction of approximately 40% of endemic cichlid species by the 1980s. Suggested causal factors include anthropogenic eutrophication, fishing, and introduced non-native species but their relative importance remains unresolved, partly because monitoring data start...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Nare Ngoepe Alenya Merz Leighton King Giulia Wienhues Mary A Kishe Salome Mwaiko Pavani Misra Martin Grosjean Blake Matthews Colin Courtney Mustaphi Oliver Heiri Andrew Cohen Willy Tinner Moritz Muschick Ole Seehausen Source Type: research
Choice of molecular marker influences spatial patterns of phylogenetic diversity
Biol Lett. 2024 Mar;20(3):20230581. doi: 10.1098/rsbl.2023.0581. Epub 2024 Mar 20.ABSTRACTSpatial patterns of phylogenetic diversity (PD) are increasingly becoming relevant for conservation decisions. PD measures are based on phylogenies estimated from molecular data. This paper addresses the question of how different molecular markers impact PD spatial patterns. We first conducted a simple simulation to explore the effect of deep and shallow changes in topology (simulating variations in molecular markers), using ultrametric and non-ultrametric trees, and then used a dataset of Chilean flora with four sets of markers to as...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Federico Luebert Rosa A Scherson Source Type: research
Evidence for hybridization-driven heteroplasmy maintained across generations in a ricefish endemic to a Wallacean ancient lake
In this study, we cloned the ND2 gene for some additional individuals with heterozygous sites and demonstrated that they are truly heteroplasmic. Phylogenetic analysis revealed that the extra haplotype within the heteroplasmic O. matanensis individuals clustered with haplotypes of O. marmoratus, a congeneric species inhabiting adjacent lakes. This indicated that the heteroplasmy originated from paternal leakage due to interspecific hybridization. The extra haplotype was unique and contained two non-synonymous substitutions. These findings demonstrate that this hybridization-driven heteroplasmy was maintained across generat...
Source: Biology Letters - March 19, 2024 Category: Biology Authors: Handung Nuryadi Ixchel F Mandagi Kawilarang W A Masengi Junko Kusumi Nobuyuki Inomata Kazunori Yamahira Source Type: research
The latest freshwater giants: a new < em > Peltocephalus < /em > (Pleurodira: Podocnemididae) turtle from the Late Pleistocene of the Brazilian Amazon
Biol Lett. 2024 Mar;20(3):20240010. doi: 10.1098/rsbl.2024.0010. Epub 2024 Mar 13.ABSTRACTOverkill of large mammals is recognized as a key driver of Pleistocene megafaunal extinctions in the Americas and Australia. While this phenomenon primarily affected mega-mammals, its impact on large Quaternary reptiles has been debated. Freshwater turtles, due to the scarcity of giant forms in the Quaternary record, have been largely neglected in such discussions. Here we present a new giant podocnemidid turtle, Peltocephalus maturin sp. nov., from the Late Pleistocene Rio Madeira Formation in the Brazilian Amazon, that challenges th...
Source: Biology Letters - March 12, 2024 Category: Biology Authors: G S Ferreira E R Nascimento E A Cadena M A Cozzuol B M Farina M L A F Pacheco M A Rizzutto M C Langer Source Type: research
Size dependent antipredator responses in a fish-shrimp mutualism
Biol Lett. 2024 Mar;20(3):20230285. doi: 10.1098/rsbl.2023.0285. Epub 2024 Mar 13.ABSTRACTFor prey, taking refuge from predators has obvious fitness benefits but may also be costly by impinging on time and effort available for feeding or attracting mates. The antipredator responses of refuge-seeking animals are therefore predicted to vary strategically depending on how threatening they perceive the risk. To test this, we studied the impacts of a simulated predatory threat on the antipredator responses of wild sandy prawn-gobies (Ctenogobiops feroculus) that co-inhabit burrows with Alpheus shrimp (family Alpheidae) in a mut...
Source: Biology Letters - March 12, 2024 Category: Biology Authors: Giovanni Polverino Topi K Lehtonen Andrew Geschke Tara Callahan Jessica Urbancic Bob B M Wong Source Type: research
