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8 results for “Austruca”
Fig. 4. Austruca triangularis, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 4. Austruca triangularis, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 3. Austruca perplexa, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 3. Austruca perplexa, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 2. Austruca lactea, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 2. Austruca lactea, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 11. Austruca citrus n in Fig. 2. Gonadal development during Yntema stages 15, 17, 19 in Bruggmanniella sanlianensis Lin, Yang & Tokuda, 2020, sp. nov.
Fig. 11. Austruca citrus n. sp. A–E, male; F, female. A, CW 11.1 mm (MNHN-IU-2017-9122), Wallis & Futuna; B–F, specimens not collected, Fiji. G– H, a population with high density. B, G, courtesy of Mark Rosenstein; C–F, H, courtesy of Rocio Gajon Bunker.
Female fiddler crabs, Austruca lactea (Decapoda: Ocypodidae), adjust their rate of mate sampling based on remaining days until oviposition under a size-dependent temperature constraint
<p>The rate of mate sampling is one of the critical components associated with the sampling costs in female mate choice. In ectotherms, environmental temperature generally constrains locomotion performance. In addition, females will adjust the mate sampling rate depending on their breeding schedule because of the risk of remaining unfertilized eggs or a loss of benefits related to mating, if they lost the opportunity to copulate. This study investigated how these effects influence the rate of female mate sampling in the temperate fiddler crab (<em>Austruca lactea</em>) in the field. The number of sampled males per searching duration formed a convex curve against environmental temperature. The optimal environmental temperature increased with the female body size. These results suggest that the mate sampling rate would be under a size-dependent temperature constraint, and sampling costs would be lower for larger females than smaller individuals under high-temperature conditions. Furthermore, when there were fewer remaining days, the mate sampling rate increased. Females would hasten the sampling rate to ensure a suitable burrow for breeding. Mate sampling rate in female A. lactea is therefore associated with environmental temperature, female body size, and remaining days until oviposition.</p>
Female fiddler crabs, Austruca lactea (Decapoda: Ocypodidae), adjust their rate of mate sampling based on remaining days until oviposition under a size-dependent temperature constraint
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Data from: Claw-waving rate of male Austruca perplexa in peak and off-peak breeding periods
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FIGURE 5. Austruca perplexa H. Milne Edwards, 1852 in Distinguishing ten sympatric species of fiddler crab (Decapoda: Ocypodidae) using a suite of phenotypic characteristics
FIGURE 5. Austruca perplexa H. Milne Edwards, 1852: a–d Sulawesi Tenggara, Indonesia. Adult male colouration; a, large chela; b, carapace dorsal view. Adult female colouration; c, frontal view; d, carapace dorsal view. Photos credit L. Michie. Line drawing of right G1; e, mesial view; f, lateral view; CLSM images of apical part of G1; g, mesial view; h, lateral view; SEM images of male gastric mill; i, median tooth plate, ventral view; j, left lateral tooth plate, mesial view.
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