Trophic Comparison of Two Species of Needlefish (Belonidae) in the Alvarado Lagoonal System, Veracruz, Mexico

作者: Daniel Arceo-Carranza , Jonathan Franco-Lopez , Gretchen L. Waggy , Rafael Chavez-Lopez

DOI: 10.18785/GCR.1601.14

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摘要: We compared the diets of Atlantic needlefish, Strongylura marina, and redfin notata, in Alvarado lagoonal system, Veracruz, Mexico, analyzed diet breadth trophic overlap between species. All fishes were collected monthly from June 2000 to July 2001 at twelve sampling stations. A total 74 intestinal tracts S. marina analyzed. The consisted 25 prey types with fish being dominate prey. In eighty-nine digestive examined 29 dominant including fishes, penaeid shrimp, polychaetes, hymenopteran insects. There was moderate (α = 0.4903) notata rainy season, while there little species during “nortes” 0.1037) or dry 0.1675) season. reduced niche both (BA 0.175 0.105, respectively) 0.128 0.173, seasons, values higher for season 0.254 0.296, respectively). RESUMEN Se realizo una comparacion de la dieta los belonidos, y en el sistema lagunar Alvarado, analizando amplitud solapamiento trofico ambas especies. Los organismos se colectaron mensualmente periodo junio a julio 12 estaciones muestreo. analizaron tractos digestivos marina. La consiste tipos presa cuales peces constituyeron dominante. Para 89 digestivos, esta especie comprendio presas diferentes, siendo peces, camaron, poliquetos e himenopteros las dominantes para especie. El entre fue moderado epoca lluvias, disminuyendo epocas nortes secas 0.1675). del nicho baja respectivamente) respectivamente), mayor especies lluvias respectivamente).

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