منابع مشابه
Folkbiology of freshwater fish.
Cross-cultural comparisons of categorization often confound cultural factors with expertise. This paper reports four experiments on the conceptual behavior of Native American and majority-culture fish experts. The two groups live in the same general area and engage in essentially the same set of fishing-related behaviors. Nonetheless, cultural differences were consistently observed. Majority-cu...
متن کاملFish intake and serum fatty acid profiles from freshwater fish.
BACKGROUND Although high mercury concentrations in fish diets raise an alarm, fish can also be a healthy choice because it is the primary source of n-3 fatty acids (FAs). However, little information is available on the contribution of freshwater fish to serum FA concentrations. OBJECTIVE This study examined the FA pathway from fish to serum in 243 moderate consumers of freshwater fish. DESI...
متن کاملExotic Fishes and Freshwater Fish Diversity
Received on 27 July 2000 Accepted on 27 September 2000 Abstract The freshwater aquatic biodiversity is depleting alarmingly due to the introduction of exotic species and other anthropogenic activities. The indiscriminate transfer of exotic fishes has brought about a wide array of problems including extirpation of indigenous species. The exotics compete with the indigenous species for food, habi...
متن کاملBehavioural thermoregulation in two freshwater fish species.
In the presence of a vertical thermal gradient, juvenile three-spined sticklebacks Gasterosteus aculeatus and minnows Phoxinus phoxinus positioned themselves higher in the water column compared with adult conspecifics. This result was consistent regardless of whether age cohorts were tested separately or together. Furthermore, juveniles but not adult fishes positioned themselves higher in water...
متن کاملForests fuel fish growth in freshwater deltas
Aquatic ecosystems are fuelled by biogeochemical inputs from surrounding lands and within-lake primary production. Disturbances that change these inputs may affect how aquatic ecosystems function and deliver services vital to humans. Here we test, using a forest cover gradient across eight separate catchments, whether disturbances that remove terrestrial biomass lower organic matter inputs into...
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ژورنال
عنوان ژورنال: Journal Siplieria Sciences
سال: 2020
ISSN: 2709-2380
DOI: 10.48173/jss.v1i2.61