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| Ponce-Marban, Donny; Hernandez, Juan; Gasca-Leyva, Eucario. |
| Tilapia culture in rural communities of the state of Yucatan, Mexico, has been increasing in recent decades. Polyculture of tilapia with other more commercially valuable species is an opportunity to substantially improve the economic yields of rural producers. The economic viability of implementing a Nile tilapia with Australian redclaw crayfish polyculture was analyzed using profitability indicators such as internal rate of return (IRR) and net present value of the investment (NPV). A bioeconomic model was developed to simulate three production densities (33/0, 33/20, tilapia and crayfish, respectively), accounting for investment recuperation in time horizons of 5, 10 and 15 years. The model includes a biological sub-model describing the growth of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Economic Viability; Polyculture; Nile Tilapia; Australian Redclaw Crayfish; Yucatan; Mexico; Livestock Production/Industries; O13; Q22. |
| Ano: 2005 |
URL: http://purl.umn.edu/56080 |
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| DZUL-CAUICH,Henry Fernando; PUC-SOSA,Marili del Carmen; CANTO-OSORIO,Juan Miguel; BALLINA-GOMEZ,Horacio Salomón. |
| ABSTRACT In order to identify the role played by plant species as a food source in the fruit election of dispersing agents (Alouatta pigra Lawrence 1933, Atelesgeoffroyi Kuhl 1820 and frugivorous bats), we developed a study in dry tropical forests in Yucatan, Mexico. We recorded the fruits consumed by frugivorous bats using collectors and, for monkeys, we implemented the focal animal method. The number of fruits consumed by primates (A. pigra and A. geoffroyi) and bats were recorded, 342 and 386, respectively. It was determined that bats deposited fruits with some percentage of pulp, while monkeys contributed more with a fruits without pulp (pairwise LSD contrast p < 0.05). Among the variety of fruit species in the diet of primates, we detected that A.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alouatta pigra; Ateles geoffroyi; Seed handling; Tree species; Yucatan. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000200141 |
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