A seasonal population matrix model of the Caribbean Red‐tailed Hawk Buteo jamaicensis jamaicensis in eastern Puerto Rico

Ibis ◽  
2019 ◽  
Vol 161 (2) ◽  
pp. 459-466 ◽  
Author(s):  
Julio C. Gallardo ◽  
Francisco J. Vilella ◽  
Michael E. Colvin
Keyword(s):  
Puerto Rico ◽  
Matrix Model ◽  
Buteo Jamaicensis ◽  
Population Matrix Model ◽  
The Caribbean ◽  
Seasonal Population ◽  
Population Matrix

scholarly journals Another look at the eigenvalues of a population matrix model

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e8018
Author(s):  
Brenda Hanley ◽  
Patrick Connelly ◽  
Brian Dennis
Keyword(s):  
Matrix Model ◽  
Dominant Eigenvalue ◽  
Interactive Software ◽  
Vital Rates ◽  
Finite Rate ◽  
Management Intervention ◽  
Rate Of Growth ◽  
Management Interventions ◽  
Population Matrix Model ◽  
Population Matrix

Population matrix models are important tools in resource management, in part because they are used to calculate the finite rate of growth (“dominant eigenvalue”). But understanding how a population matrix model converts life history traits into the finite rate of growth can be tricky. We introduce interactive software (“IsoPOPd”) that uses the characteristic equation to display how vital rates (survival and fertility) contribute to the finite rate of growth. Higher-order interactions among vital rates complicate the linkage between a management intervention and a population’s growth rate. We illustrate the use of the software for investigating the consequences of three management interventions in a 3-stage model of white-tailed deer (Odocoileus virginianus). The software is applicable to any species with 2- or 3-stages, but the mathematical concepts underlying the software are applicable to a population matrix model of any size. The IsoPOPd software is available at: https://cwhl.vet.cornell.edu/tools/isopopd.

Geology and hydrogeology of the Caribbean islands aquifer system of the Commonwealth of Puerto Rico and the U.S. Virgin Islands

2002 ◽  
Author(s):  
Robert A. Renken ◽  
W. C. Ward ◽  
I.P. Gill ◽  
Fernando Gómez-Gómez ◽  
Jesús Rodríguez-Martínez ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Virgin Islands ◽  
Aquifer System ◽  
Caribbean Islands ◽  
The Caribbean ◽  
The U.S

Leishmania spp. and leishmaniasis on the Caribbean islands

2019 ◽  
Author(s):  
Chaoqun Yao
Keyword(s):  
Puerto Rico ◽  
Dominican Republic ◽  
Trinidad And Tobago ◽  
Parasite Species ◽  
Sand Fly ◽  
Caribbean Islands ◽  
Leishmania Spp ◽  
The Caribbean ◽  
Human Infections ◽  
Sand Fly Vectors

Abstract The kinetoplastid protozoan Leishmania spp. cause leishmaniasis, which clinically exhibit mainly as a cutaneous, mucocutanous or visceral form depending upon the parasite species in humans. The disease is widespread geographically, leading to 20 000 annual deaths. Here, leishmaniases in both humans and animals, reservoirs and sand fly vectors on the Caribbean islands are reviewed. Autochthonous human infections by Leishmania spp. were found in the Dominican Republic, Guadeloupe and Martinique as well as Trinidad and Tobago; canine infections were found in St. Kitts and Grenada; and equine infections were found in Puerto Rico. Imported human cases have been reported in Cuba. The parasites included Leishmania amazonensis, Le. martiniquensis and Le. waltoni. Possible sand fly vectors included Lutzomyia christophei, Lu. atroclavatus, Lu. cayennensis and Lu. flaviscutellata as well as Phlebotomus guadeloupensis. Reservoirs included rats, rice rats and mouse opossum. An updated study is warranted for the control and elimination of leishmaniasis in the region because some of the data are four decades old.

Systematics and conservation of an endemic radiation of Accipiter hawks in the Caribbean islands

The Auk ◽  
2021 ◽  
Author(s):  
Therese A Catanach ◽  
Matthew R Halley ◽  
Julie M Allen ◽  
Jeff A Johnson ◽  
Russell Thorstrom ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Bird Species ◽  
Species Level ◽  
Anthropogenic Factors ◽  
Nucleotide Polymorphisms ◽  
Reciprocal Monophyly ◽  
Island Populations ◽  
Mitochondrial Haplotypes ◽  
Accipiter Striatus ◽  
The Caribbean

Abstract More than one-third of the bird species found in the Caribbean are endemic to a set of neighboring islands or a single island. However, we have little knowledge of the evolutionary history of the Caribbean avifauna, and the lack of phylogenetic studies limits our understanding of the extent of endemism in the region. The Sharp-shinned Hawk (Accipiter striatus) occurs widely across the Americas and includes 3 endemic Caribbean taxa: venator on Puerto Rico, striatus on Hispaniola, and fringilloides on Cuba. These island populations have undergone extreme declines presumably due to ecosystem changes caused by anthropogenic factors, as well as due to severe hurricanes. Sharp-shinned Hawks, in general, and Caribbean Sharp-shinned Hawks, in particular, have not been placed in a modern phylogenetic context. However, the island taxa have historically been presumed to have some ongoing gene flow with mainland populations. Here we sequenced ultraconserved elements (UCEs) and their flanking regions from 38 samples, focusing on Caribbean taxa. Using a combination of UCEs, mitochondrial genome sequences, and single-nucleotide polymorphisms, we investigated the phylogenetic relationships among Caribbean lineages and their relationships to mainland taxa. We found that Caribbean Sharp-shinned Hawks are reciprocally monophyletic in all datasets with regard to mainland populations and among island taxa (with no shared mtDNA haplotypes) and that divergence in the NADH dehydrogenase 2 gene (ND2) between these mainland and island groups averaged 1.83%. Furthermore, sparse non-negative matrix factorization (sNMF) analysis indicated that Hispaniola, Puerto Rico, and mainland samples each form separate populations with limited admixture. We argue that our findings are consistent with the recognition of the 3 resident Caribbean populations as species-level taxa because nuclear and mitochondrial genetic data indicate reciprocal monophyly and have species-level divergences, there is no sharing of mitochondrial haplotypes among or between island taxa and those on the mainland; and they are diagnosable by plumage.

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