Our results suggest that the co-option of a male-like trait to a novel female antiharassment function plays a key role in sexual conflict driven by premating interactions. Across species this signal evolved repeatedly, but in heterochrome females its origin is contingent on the signal expressed by co-occurring male-mimicking females. Using phenotypic manipulations, we show that the developmental expression of this signaling trait in heterochrome females reduces premating harassment prior to sexual maturity.
FEMALE COMMON BLUETAIL DAMSELFLY PATCH
In Ischnura elegans, males and male-mimicking females express a blue abdominal patch throughout postemergence life. Female Blue-tailed Damselflies come in a variety of colour forms, including a pink form, a violet form and a pale green form. They are weak fliers and their compound eyes are set distinctly apart. At rest, the wings are held closed and above the abdomen. The common bluetail damselfly Ischnura elegans exhibits a female-limited colour polymorphism (Fig 1): one androchrome (male mimicking) morph and two. They are more slender than their dragonfly relatives and have similarly shaped forewings and hindwings. Many Ischnura species have multiple female color morphs, which include a male-colored morph (male mimics) and one or two female morphs that differ markedly from males (heterochrome females). Damselflies of Jurong Lake Gardens Damselflies are from the suborder Zygoptera. Here, we combine phylogenetic comparative analyses of a color polymorphic damselfly genus ( Ischnura) with behavioral experiments in one target species to investigate the evolutionary origin and current adaptive function of a developmental female color signal.
However, we know little about how female signal development modifies male mating harassment and thereby sexual conflict. Such signals have functions in sexual conflict over mating and can therefore influence sexually antagonistic coevolution. Web page.Intersexual signals that reveal developmental or mating status in females have evolved repeatedly in many animal lineages. Sprite has more blue on its back and the Easternĭamselflies are at rest, they held their wings closely folded
With more back on its back. The other blue damselfly species, the Blue That we can tell it is a Common Bluetail Damselfly by less blue on its eyes, and Our Australian Dragonfly Society President, Deniss Reeves, advised Quite a number of species of damselflies found in Brisbane are in blue colourĪnd look similar. Notice the thick black strip on its thorax back and the blue dots The larvae live in streams, lakes and ponds among plants and rocks. Adult damselflies live near streams, lakes and ponds. Adult damselflies have a long and slender abdomen, two pairs of wings and three pairs of long legs. It commonly occurs throughout its geographical range which spans from western Europe to Japan. The male damselfly is brightly blue in colour with blackĪbdomen. They have three stages in their life cycle: egg - larva - adult. NL: Lantaarntje UK: Blue-tailed Damselfly DE: Groe Pechlibelle FR: Agrion lgant Ischnura elegans (Common Bluetail) is one of the most common damselflies of Europe. Page are mostly taken at Wishart along Bulimba Creek. It is particularly frequent around garden ponds, but can also. In fact, most of the damselfly species we see have brightly coloured males and rather drab females. Common Bluetail This is another species with a marked sex difference. The plants either in the middle of ponds or at the water edges. The Blue-tailed damselfly is a small, dark damselfly and one of the commonest species in the UK. Damselflies tend to be smaller and more delicate (but not always), have equal-sized fore and hind wings, and tend to fold their wings at rest (but again, not always). Same except pale blue to grayish-green in colour. Common Bluetail Ischnura elegans (31600432432).jpg. Ischnura elegans form violacea (30905670254).jpg. Common Bluetail female C type immature female Ischnura elegans (44062780604).jpg. There is the blue tip at the end of abdomen. English: Common Bluetail, blue-tailed damselfly.
Head and thorax are black and blue, the abdomen is black in colour. Male, body length 34mm The Damselflyĭamselflies are one of the most common damselflies found in Brisbane waters. This page contains information and pictures about Common Bluetailĭamselflies that we found in the Brisbane area, Queensland, Australia. Common Bluetail Damselfly - Ischnura heterosticia FAMILY COENAGRIONIDAE
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