Triphenyltin exposure affects mating behaviors and attractiveness to females during mating in male guppies (Poecilia reticulata)

Sexually reproductive insects exhibit diverse mating behaviors. However, the mating pattern remains unknown for Panorpodes of Panorpodidae to date. In this study, we investigated the mating behavior and copulatory mechanism of the short-faced scorpionfly Panorpodes kuandianensis Zhong, Zhang and Hua, 2011 for the first time. The results show that the male provides a salivary mass as a nuptial gift to the female and starts to copulate with the female in a V-shaped position, then changes to an end-to-end position by temporarily twisting the female abdominal segments VII−IX by 180°. During mating the basal processes and the basal teeth of the gonostyli and the hypandrium are used to obtain copulation and sustain the coupling of genitalia to secure successful sperm transfer. This unique mating pattern is greatly different from that of other Mecoptera reported and is likely evolved as an adaptation in the context of sexual conflict.

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Development and validation of an environmental DNA protocol to detect an invasive Caribbean freshwater fish, the guppy ( Poecilia reticulata )

Environmental DNA ◽

10.1002/edn3.248 ◽

2021 ◽

Author(s):

Sierra N. Smith ◽

Ingo Schlupp ◽

Edward D. Higgins ◽

Jessa L. Watters ◽

Kerri‐Ann Bennett ◽

...

Keyword(s):

Freshwater Fish ◽

Poecilia Reticulata ◽

Environmental Dna ◽

Development And Validation

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Trinidadian guppies use a social heuristic that can support cooperation among non-kin

Proceedings of The Royal Society B Biological Sciences ◽

10.1098/rspb.2020.0487 ◽

2020 ◽

Vol 287 (1934) ◽

pp. 20200487 ◽

Cited By ~ 1

Author(s):

Safi K. Darden ◽

Richard James ◽

James M. Cave ◽

Josefine Bohr Brask ◽

Darren P. Croft

Keyword(s):

Poecilia Reticulata ◽

Social Space ◽

Inclusive Fitness ◽

Single Point ◽

Theoretical Work ◽

Evolution Of Cooperation ◽

Social Partner ◽

Proximate Mechanisms ◽

Cognitive Limitations ◽

Fitness Benefits

Cooperation among non-kin is well documented in humans and widespread in non-human animals, but explaining the occurrence of cooperation in the absence of inclusive fitness benefits has proven a significant challenge. Current theoretical explanations converge on a single point: cooperators can prevail when they cluster in social space. However, we know very little about the real-world mechanisms that drive such clustering, particularly in systems where cognitive limitations make it unlikely that mechanisms such as score keeping and reputation are at play. Here, we show that Trinidadian guppies ( Poecilia reticulata ) use a ‘walk away’ strategy, a simple social heuristic by which assortment by cooperativeness can come about among mobile agents. Guppies cooperate during predator inspection and we found that when experiencing defection in this context, individuals prefer to move to a new social environment, despite having no prior information about this new social group. Our results provide evidence in non-human animals that individuals use a simple social partner updating strategy in response to defection, supporting theoretical work applying heuristics to understanding the proximate mechanisms underpinning the evolution of cooperation among non-kin.

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