The effect of sewage discharge on the ecosystem engineering activities of two East African fiddler crab species: Consequences for mangrove ecosystem functioning

The purpose of this development study is to develop research-based booklet for the identification of fiddler crab (Uca spp.) diversity. Some people do not yet know the ecological benefits of fiddler crabs. This is apparent when some people take fiddler crabs to serve as decorative crabs. The product specifications expected in the development of this medium are booklets. Therefore, it takes a companion learning media that can lead the local community to implement self-learning in the form of booklet because their interest of reading is very less, especially when reading a book that is colorless and has a lot of words. Booklet that is packed with interesting and accompanied by pictures is an alternative solution. The development method used in the research is Exploration, Explanation, and Evaluate (3E) model. The research was conducted by developing the research result into a booklet based on the diversity of fiddler crabs in mangrove ecosystem. The booklet validation consists of two lecturers from the Department of Biology Education at the University of Muhammadiyah Malang which is a material expert and learning media expert. The result of this research is booklet very valid with the percentage of material expert validity 81.25% and learning media expert 95.13%.

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IDENTIFIKASI JENIS KEPITING BIOLA DI HUTAN MANGROVE DUSUN SETINGGA ASINDESA SEBUBUS KECAMATAN PALOH KABUPATEN SAMBAS

JURNAL HUTAN LESTARI ◽

10.26418/jhl.v8i1.39385 ◽

2020 ◽

Vol 8 (1) ◽

Author(s):

Edy Kurniawan ◽

M Sofwan Anwari ◽

M Dirhamsyah

Keyword(s):

Sampling Method ◽

Fiddler Crab ◽

Sandy Beaches ◽

Mangrove Forests ◽

Crab Species ◽

Fiddler Crabs ◽

Purposive Sampling ◽

Plot Size ◽

Uca Annulipes

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

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Variation of Sediment Properties among the Radial Profiles of Fiddler Crab Burrows in Mangrove Ecosystem

International Journal of Zoological Research ◽

10.3923/ijzr.2016.1.10 ◽

2015 ◽

Vol 12 (1-2) ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Mohammad Mokhtari ◽

Mazlan Abd Ghaffar ◽

Gires Usup ◽

Zaidi Che Cob

Keyword(s):

Fiddler Crab ◽

Mangrove Ecosystem ◽

Sediment Properties ◽

Radial Profiles

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Micro-climate and incubation in a fiddler crab species

Journal of Experimental Marine Biology and Ecology ◽

10.1016/j.jembe.2016.08.009 ◽

2016 ◽

Vol 485 ◽

pp. 18-23 ◽

Cited By ~ 3

Author(s):

H.L. Clark ◽

P.R.Y. Backwell

Keyword(s):

Fiddler Crab ◽

Crab Species

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Do mudballs around burrows affect burrow characteristics of the fiddler crab Austruca annulipes (H. Milne Edwards, 1837) (Brachyura, Ocypodidae)?

Crustaceana ◽

10.1163/15685403-00003779 ◽

2018 ◽

Vol 91 (4) ◽

pp. 489-500 ◽

Cited By ~ 2

Author(s):

Fahmida Wazed Tina ◽

Mullica Jaroensutasinee ◽

Krisanadej Jaroensutasinee ◽

Anantanit Chumsri

Keyword(s):

Fiddler Crab ◽

Crab Species

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.

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Ecology of the facultative phytotelmic crab Platychirarma buettikoferi (De Man, 1883) (Decapoda, Brachyura, Sesarmidae)

Crustaceana ◽

10.1163/15685403-bja10148 ◽

2021 ◽

Vol 94 (9) ◽

pp. 1043-1058

Author(s):

Marco Fusi ◽

Joseph Bayi ◽

Vanessa Ngo-Massou ◽

Ndongo Din ◽

Angela Sacchi ◽

...

Keyword(s):

Ecosystem Functioning ◽

Feeding Behaviour ◽

Mangrove Forest ◽

Mangrove Ecosystem ◽

Mangrove Forests ◽

Rapid Urbanization ◽

History Of ◽

Fauna Composition ◽

De Man ◽

Shed Light

Abstract The mangrove forests surrounding Douala, Cameroon, have a long history of human impact due to rapid urbanization, resulting in patches of true mangrove forest interspersed with areas dominated by the mangrove-associated Pandanus species. A survey carried out to assess the possible shift in crab fauna composition and dominance between mangrove and Pandanus dominated areas revealed an undescribed phytotelmic habitat for Platychirarma buettikoferi. This species was found colonizing the natural reservoirs of fresh water represented by Pandanus spp. Our results show P. buettikoferi to be ecologically dependent upon Pandanus spp., and absent on the mangrove floor and trees, strongly indicating a phytotelmic adaptation. Our data suggest that this species is a facultative phytotelmic species well adapted to Pandanus spp. dominated areas. Further studies on the reproductive biology and feeding behaviour of P. buettikoferi may shed light on this unique phytotelmic lifestyle and its role in mangrove ecosystem functioning.

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