Laboratorio de Ictiología, Instituto de Investigaciones Marinas y Costeras-IIMyC-CONICET, Universidad Nacional de Mar del Plata-UNMdP, Funes 3350, Mar del Plata B7602AYL, Argentina.
J Fish Biol. 2013 Jul;83(1):156-69. doi: 10.1111/jfb.12159.
The effects of intrinsic (sex, maturity stage and body size) and extrinsic (depth and region) factors on the diet of Bathyraja macloviana, in the south-west Atlantic Ocean, were evaluated using a multiple-hypothesis modelling approach. Bathyraja macloviana fed mainly on polychaetes followed by amphipods, isopods and decapods. Effects of intrinsic and extrinsic factors on diet composition of this species were found. The consumption of polychaetes had a humped relationship with total length (L(T), and isopods and decapods increased with increasing L(T). Immature individuals preyed on amphipods more heavily than mature individuals. Furthermore, region and depth had an important effect on the consumption of isopods, decapods and amphipods. Such ontogenetic changes and spatial patterns may provide insights into understanding the regulatory mechanisms of marine communities.
采用多假设模型方法评估了内在（性别、成熟阶段和身体大小）和外在（深度和区域）因素对西南大西洋巴塔伊亚拉贾 macloviana 饮食的影响。巴塔伊亚拉贾 macloviana 主要以多毛类动物为食，其次是端足类动物、等足类动物和十足目动物。发现内在和外在因素对该物种饮食组成的影响。多毛类动物的消耗与总长度（L(T)呈驼峰关系，而等足类动物和十足目动物随着 L(T)的增加而增加。不成熟个体比成熟个体更大量地捕食端足类动物。此外，区域和深度对等足类动物、十足目动物和端足类动物的消耗有重要影响。这种发育变化和空间模式可能有助于理解海洋群落的调节机制。
