التفاصيل البيبلوغرافية
| العنوان: |
Partial troPhic segregation in co-occurring Gambusia sPecies (cyPrinodontiformes: Poeciliidae) in a natural wetland of cuba ; Segregación trófica parcial entre especies de Gambusia (Cyprinodontiformes: Poeciliidae) en un humedal natural de Cuba |
| المؤلفون: |
Rodríguez-Machado, Sheila, Hidalgo, Gabriela, Brito, Laura, Arrebola, Maylet, Morales, Lisandra, Hernández, Dianet, Sánchez, Dariel, Rodríguez-González, Julio, Castellini, Caridad, Ponce de León, José L. |
| المصدر: |
Revista de Investigaciones Marinas; Vol. 39 No. 1 (2019) ; Revista de Investigaciones Marinas; Vol. 39 Núm. 1 (2019) ; 1991-6086 |
| بيانات النشر: |
Centro de Investigaciones Marinas, Universidad de La Habana, Cuba. |
| سنة النشر: |
2023 |
| مصطلحات موضوعية: |
amplitud del nicho trófico, contenido estomacal, estrategia alimentaria, distribución de los recursos, superposición trófica, dietary overlap, feeding strategy, resource partitioning, stomach content, trophic niche width |
| الوصف: |
Gambusia punctata and Gambusia puncticulata show a distinctive distribution pattern in Cuba: G. punctata dominates mountain streams, whereas G. puncticulata is more abundant in lowland wetlands. Nevertheless, there are some transition zones along few freshwater basins in which these species co-exist in similar abundance. Recent studies in wild populations revealed similar use of food resources for both G. punctata and G. puncticulata. However, little is known about possible evolutionary mechanisms in the feeding strategies of these species allowing them to co-exist. We assessed the diet composition, feeding strategy, niche width, and dietary overlap between species and between sexes of these two Gambusia species in a natural wetland of Cuba. Our results showed partial segregation in the consumption of available resources between G. punctata and G. puncticulata. Such incomplete trophic niche segregation may be facilitated by their generalist trophic niche and their specific feeding strategies. G. punctata showed a generalist strategy, given that several individuals shared a high number of food items. Whereas, G. puncticulata showed a specialist strategy explained by the variation amongst individual feeding on different food items. The wide spectra of consumed food items could explain the low trophic segregation found between sexes of both species. Sex-specific reproductive roles known for this fish family, seem not to induce differences in the diet between male and female individuals of G. punctata and G. puncticulata ; Gambusia punctata y Gambusia puncticulata muestran un patrón de distribución muy característico: G. punctata domina arroyos de montaña, mientras que G. puncticulata es más abundante en humedales de zonas bajas. No obstante, hay algunas zonas de transición a lo largo de las cuencas de agua dulce en las cuales estas especies coexisten en similar abundancia. Estudios recientes en poblaciones naturales revelaron un uso similar de los recursos por G. punctata y G. puncticulata. Sin embargo, poco se ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
Spanish; Castilian |
| Relation: |
https://revistas.uh.cu/rim/article/view/4774/4144; https://revistas.uh.cu/rim/article/view/4774 |
| الاتاحة: |
https://revistas.uh.cu/rim/article/view/4774 |
| Rights: |
https://creativecommons.org/licenses/by-nc-nd/4.0 |
| رقم الانضمام: |
edsbas.739FA66F |
| قاعدة البيانات: |
BASE |