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首页> 外文期刊>Cybium >Synopsis of the biology and ecology of Pomadasys argenteus (Haemulidae) in New Caledonia
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Synopsis of the biology and ecology of Pomadasys argenteus (Haemulidae) in New Caledonia

机译：新喀里多尼亚Pomadasys argenteus（Haemulidae）的生物学和生态学简介

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Pomadasys argenteus (Forsskal, 1775) is a major commercial and subsistence species of shore fish in most of its range (East Africa to Fiji) but little information is available on its biology and ecology. The present study investigates the major biological and ecological traits of this species in New Caledonia, on the eastern border of its range. This species was mainly found in mangroves and to a lesser extent on nearby soft bottoms. Most of the fish were found in shallow waters (< 5 m), the deepest record being 28 m. Abundance varied within habitats through the year, with fish becoming more abundant on soft bottoms during the reproductive season, which occurs between July and December. The largest specimen was 42 cm FL and 1150 g. Females were more abundant (73% of the sexed population) and larger than males, the latter never exceeding 34 cm FL. Both sexes matured at the same size (16-18 cm). A higher proportion of females was found in the mangroves than on soft bottoms. However, the proportion of males and females ready to reproduce was similar in both habitats. Diet showed little diversity and was mainly composed of crabs and to a lesser extent shrimps, bivalves and annelids. Length-weight relationships varied between sexes, with males being slightly heavier than females of the same size. Growth was estimated by analyzing daily and seasonal otolith increments which were validated by a combination of methods. An asymptotic growth formula was fitted to the data: Length (mm FL) = 420*(1 - e(-0.346*(age-0.161))), where age is given in years. Growth was found to be slower than in most other studies, except in Kuwait waters. There was no significant difference in growth between sexes.
机译：Pomadasys argenteus（Forsskal，1775）是其大部分范围（东非至斐济）中主要的商业鱼类和生鱼，但有关其生物学和生态学的信息很少。本研究调查了该物种东部边界的新喀里多尼亚该物种的主要生物学和生态特征。该物种主要发现于红树林中，并较少见于附近的软底。大部分鱼类是在浅水区（<5 m）中发现的，最深的记录是28 m。一年四季生境中的鱼类丰度各不相同，在繁殖季节（7月至12月），鱼类在柔软的底部变得更加丰富。最大的标本为42 cm FL和1150 g。女性比男性更丰富（占性别人口的73％），并且比男性更大，后者从不超过34 cm FL。两性都以相同的大小（16-18厘米）成熟。在红树林中发现的雌性比例高于在软底上。但是，两种生境中准备繁殖的雄性和雌性比例相似。饮食几乎没有多样性，主要由螃蟹组成，在较小程度上由虾，双壳类和无脊椎动物组成。性别之间的长度-重量关系有所不同，男性比同等大小的女性稍重。通过分析每日和季节性耳石增量来估算生长，并通过多种方法进行了验证。将渐近生长公式拟合到数据：长度（mm FL）= 420 *（1- e（-0.346 *（age-0.161））），其中年龄以年为单位。除科​​威特水域外，发现生长速度比大多数其他研究慢。男女之间的生长没有显着差异。

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