Merge pull request #1021 from igronau/duck_mallard_qc

Added QC for duck/mallard (AnaPla)

stdpopsim/qc/AnaPla.py

@@ -0,0 +1,54 @@
+import msprime
+
+import stdpopsim
+
+
+_species = stdpopsim.get_species("AnaPla")
+
+
+def LavertskyEtAl2019TwoPop():
+    id = "QC-MallardBlackDuck_2L19"
+
+    # Parameters are taken from Fig 6 of Lavertsky et al. (2019)
+    # analysis of contemporary samples
+    generation_time = 4  # 4 years per generation
+    # (see page 7, section 2.6, in Lavertsky et al. (2019)
+    N_Mallard = 1.37e6  # Mallard estimated Ne
+    # N_Mallard       = 10.37e6  # Mallard estimated Ne
+    N_Black_duck = 1.57e6  # Black duck estimated Ne
+    N_anc = 819535  # ancestral population size; not reported in the paper,
+    # but reported to Peter Ralph in personal communication
+    T_div = 632305 / generation_time  # Divergence time
+
+    # symmetric migration model. Reported rates correspond to
+    # number of migrants per generation. scaled by the ancestral Ne
+    # so m_ij = M_ij / 2N_anc
+    # (m_ij is the simulated rate and M_ij is the rate reported in paper)
+    m_Mallard_Black = 2.82 / (2 * N_anc)
+    m_Black_Mallard = m_Mallard_Black
+
+    model = msprime.Demography()
+    model.add_population(name="Mallard", description="Mallard", initial_size=N_Mallard)
+    model.add_population(
+        name="Black_duck", description="Black_duck", initial_size=N_Black_duck
+    )
+    model.add_population(name="Ancestral", description="Ancestral", initial_size=N_anc)
+    model.add_population_split(
+        time=T_div, derived=["Mallard", "Black_duck"], ancestral="Ancestral"
+    )
+    model.set_migration_rate(source="Mallard", dest="Black_duck", rate=m_Mallard_Black)
+    model.set_migration_rate(source="Black_duck", dest="Mallard", rate=m_Black_Mallard)
+
+    return stdpopsim.DemographicModel(
+        id=id,
+        description=id,
+        long_description=id,
+        generation_time=generation_time,
+        mutation_rate=4.83e-9,
+        model=model,
+    )
+
+
+_species.get_demographic_model("MallardBlackDuck_2L19").register_qc(
+    LavertskyEtAl2019TwoPop()
+)

stdpopsim/qc/__init__.py

@@ -2,3 +2,4 @@
 from . import DroMel  # NOQA
 from . import HomSap  # NOQA
 from . import PonAbe  # NOQA
+from . import AnaPla  # NOQA