Genetic and morphological separation of Uca occidentalis, a new East African fiddler crab species, from Uca annulipes (H. Milne Edward, 1837) (Crustacea: Decapoda: Brachyura: Ocypodidae)

2016 ◽  
Vol 262 ◽  
pp. 10-19 ◽  
Author(s):  
Reza Naderloo ◽  
Christoph D. Schubart ◽  
Hsi-Te Shih
2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Edy Kurniawan ◽  
M Sofwan Anwari ◽  
M Dirhamsyah

The fiddler crab is also known as the kepiting biola is an animal that has broad legs that belong to the Crustacean class. Fiddler crab is a type of crab that has a habitat in intertidal areas, especially around mangrove forests and sandy beaches. This study aims to examine the identification of fiddler crab species found in the Mangrove Sebubus. The method used in this research is purposive sampling method with the use of a square plot size of 1 x 1 meter as many as 30 pieces in 3 research lines. The results showed as many as 7 species of fiddler crabs found there, that is Uca annulipes, Uca rosea, Uca forcipata, Uca bellator, Uca tetragonon, Uca paradussumieri, and Uca acuta.Keywords: Identification, Fiddler Crab, Mangrove Sebubus


2009 ◽  
Vol 6 (2) ◽  
pp. 180-182 ◽  
Author(s):  
Richard N. C. Milner ◽  
Michael D. Jennions ◽  
Patricia R. Y. Backwell

In fiddler crabs both males and females defend territories that are essential for survival. Given pronounced sexual dimorphism in weaponry, how do weaponless females defend their territory from well-armed males? Using observational data and two simple experiments, we test whether male Uca annulipes protect their female neighbours from conspecific intruders. We show that males defend their female neighbours against male but not female intruders. We also show that females sometimes mate with their immediate neighbours. Male defence of female neighbours appears to represent both pre-copulatory mate-guarding and a territorial coalition. Males who ensure that their neighbour remains female could benefit through increased opportunity for future reproductive success and lower boundary maintenance costs.


Crustaceana ◽  
2018 ◽  
Vol 91 (4) ◽  
pp. 489-500 ◽  
Author(s):  
Fahmida Wazed Tina ◽  
Mullica Jaroensutasinee ◽  
Krisanadej Jaroensutasinee ◽  
Anantanit Chumsri
Keyword(s):  

We examined the effects of mudballs around burrows and of sex on burrow characteristics (shape, diameter, length, depth and volume) in an underground mating fiddler crab species,Austruca annulipes(H. Milne Edwards, 1837). We investigated 35 burrows with mudballs (males: 20; females: 15) and 34 burrows without mudballs (males: 16; females: 18), and measured their burrow characteristics. Results showed that burrow characteristics did not differ between burrows with and without mudballs. Males built larger-sized burrows with greater volumes, and had more mudballs than females. Crabs built J-, I-, L-, S- and U-shaped burrows, with higher numbers of J-shaped burrows in males, and higher numbers of I-shaped burrows in females. J-shaped burrows were larger with greater volumes, and had more mudballs than I-shaped burrows. For burrows with mudballs, mudball numbers were positively associated with burrow characteristics. This indicates that fiddler crab burrow characteristics are affected by sex, not by the production and presence of mudballs.


2018 ◽  
Vol 208 ◽  
pp. 131-139 ◽  
Author(s):  
Nasreen Peer ◽  
Gavin M. Rishworth ◽  
Nelson A.F. Miranda ◽  
Renzo Perissinotto

Zoo Biology ◽  
2019 ◽  
Vol 38 (4) ◽  
pp. 343-354 ◽  
Author(s):  
Robbert A. F. Himbeeck ◽  
Willeke Huizinga ◽  
Ivo Roessink ◽  
Edwin T. H. M. Peeters

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