不同的策略和形状:两种淡水对虾交配系统与两性异形的关系

IF 0.9 4区生物学 Q3 ZOOLOGY

New Zealand Journal of Zoology Pub Date : 2023-04-03 DOI:10.1080/03014223.2022.2043394

C. S. Nogueira, Gabriel Vieira Martins Rezende Gois, R. A. Pescinelli, R. C. Costa

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引用次数: 3

摘要

摘要加勒比对虾表现出五种不同类型的交配系统，根据繁殖策略的不同，它们可能表现出特定的形态特征，从而导致雄性和雌性之间的两性异形。本研究旨在分析淡水对虾pantanalense和iheringi的两性异形，这两个物种可能有不同的交配系统。我们的预测是，两性异形的模式显示了物种之间的差异，这可能与其交配系统和性行为有关。利用甲壳（CA）、第二胸膜（SPP）和螯足蟾蜍（CP）的几何形态计量学分析了两性异形。几何形态计量学分析表明，潘氏M.pantanense的CA和SPP形状存在性别差异。在M.iheringi中，仅在SPP的形状上观察到性别差异。CA和CP大小的两性异形在物种之间存在差异，而在M.pantanense中，雌性显示出最大的大小，在M.ihringi中，雄性显示出最大大小。在每个物种中观察到的结构的大小和形状之间的模式加强了隆突对虾物种交配系统和两性异形之间的关系。http://zoobank.org/urn:lsid:zoobank.org:pub:03DE0D3E-598A-4692-9771-79个449d92个

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Different strategies and shapes: the relationship between mating system and sexual dimorphism in two freshwater prawn species

ABSTRACT Caridean prawns show five different types of mating systems and may show specific morphological characters depending on the reproductive strategy, resulting in sexual dimorphism between males and females. The present study aimed to analyse the sexual dimorphism in the freshwater prawns Macrobrachium pantanalense and Macrobrachium iheringi, two species that presumably have different mating systems. Our predictions are that the pattern of sexual dimorphism shows differences between the species, which may be related to its mating system and sexual behavior. Sexual dimorphism was analysed by geometric morphometrics using the carapace (CA), second pleonal pleuron (SPP) and cheliped propodus (CP). The geometric morphometrics analysis showed differences between the sexes in the shape of CA and SPP of M. pantanalense. In M. iheringi, differences between sexes were observed only in the shape of SPP. The sexual dimorphism in the size of CA and CP diverged between the species, while in M. pantanalense the females showed the largest sizes, in M. iheringi the males showed the largest sizes. The patterns observed between size and shape of structures in each species reinforce the presence of relationships between mating system and sexual dimorphism in caridean prawn species. http://zoobank.org/urn:lsid:zoobank.org:pub:03DE0D3E-598A-4692-9771-79EA449D92EA

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来源期刊

New Zealand Journal of Zoology 生物-动物学

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Aims: The diversity of the fauna of the southern continents and oceans is of worldwide interest to researchers in universities, museums, and other centres. The New Zealand Journal of Zoology plays an important role in disseminating information on field-based, experimental, and theoretical research on the zoology of the region.