Observations On the Molt Cycle and Growth of the Crab, Podophthalmus Vigil (Fabricius) 1) (Decapoda, Portunidae )

Sather, Bryant T.

doi:10.1163/156854066x00351

Cited by 12 publications

(4 citation statements)

References 14 publications

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“…Juveniles showed nearly flattened bell-shaped abdomens and exposed edges of the thoracic sterna similar to males; while in female adults the abdomen was swollen, nearly oval and all parts of their thoracic sterna were covered. The shell condition of the crabs was categorized after Sather (1966); Stage A (post-molt just after molting, with very soft shell that is easily deformed under pressure), Stage B (later post-molt, hardening of shell proceeded, but shell is softer and thinner than Stage C), Stage C (intermolt) and Stage D (pre-molt, new shell is formed under the outer shell).…”

Section: Methodsmentioning

confidence: 99%

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Copulation of the Japanese potamid crab <i>Geothelphusa dehaani</i> in their natural habitat

Kobayashi¹,

Archdale

2020

Crust Res

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Mating pairs of the potamid crab Geothelphusa dehaani were observed in a mountain stream of Fukuoka Prefecture, Japan, during the survey of over ca. 3-year period. Five mating pairs in copulatory posture were found in the afternoon in October and November. Mating pairs remained immobile for at least several minutes. No guarding behavior was observed after the release of copulation. They were all found on the bottom substrate under the water in pools. Females were either in the soft-shell or hard-shell condition, and even included one juvenile among the adults.

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Section: Methodsmentioning

confidence: 99%

“…Records of copulating pairs of Geothelphusa dehaani in Shinken River. Stage in shell condition is afterSather (1966).…”

mentioning

confidence: 99%

Copulation of the Japanese potamid crab <i>Geothelphusa dehaani</i> in their natural habitat

Kobayashi¹,

Archdale

2020

Crust Res

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“…Molting dişilerde mayıs ve temmuz aylarında yüksek, üreme döneminde ise çok düşük çıkmıştır. Dekapodlar da genel olarak molting, sıcak olan aylarda daha yüksek oranda görülmektedir (Sather, 1966). Abello (1989), üreme dönemi (Ekim-Ocak) boyunca dişilerde kabuk değişimini en az bulurken Mayıs-Temmuz aylarında yüksek oranda molting evresinin ilk saflarında olan bireyler tespit etmiştir.…”

Section: Bulgularunclassified

Güney Doğu Karadeniz’de Beam Trol ile Avlanan Liocarcinus depurator (Crustacea: Decapod: Brachyura)’ün Boya Dayalı Büyümesi

Onay

Bilgin

2022

Journal of Anatolian Environmental and Animal Sciences

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Karadeniz'de kirişli trol (beam trol) ile avlanan Liocarcinus depurator (Crustacea, Decapoda, Brachyura) türünün büyüme özelliklerini belirlemek amacıyla yürütülmüştür. İyidere, Merkez ve Çayeli istasyonlarından 2 m genişliğinde kirişli trol kullanılarak 0-30 + derinliklerde örnekleme yapılmıştır. L. depurator türünün mevsimsel büyüme modelinde hesaplanan Rn değeri dişi için 0,766, erkek için ise 0,676 olarak, mevsimsel olmayan büyüme modeline göre hesaplanan Rn değeri de dişi için 0,434, erkek için ise 0,597 olarak hesaplanmıştır. Büyümedeki mevsimsel salınım (C) dişiler için 0,703 erkekler için 0,990 olarak hesaplanmıştır. Mevsimsel von Bertalanffy büyüme sabitleri erkek için K=1,739 yıl -1 , L∞ = 36,4 mm WP= 0, t0=-0,600, Φ´=3,363 olarak, dişiler için ise K=1,692 yıl -1 , L∞=35,0 mm, WP=4,73, t0=-0,550, Φ´=3,317 mm olarak belirlenmiştir. WP değerlerine göre erkek bireyler için büyümenin en yavaş olduğu zaman, kış ortası dişi bireyler için ise ilkbahar sonu olduğu tespit edilmiştir. Bu sonuçlar L. depurator türünün Karadeniz'de mevsimsel büyüme özelliği gösterdiğini ortaya koymuştur.

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“…Despite of its high potential to be commercialized, there is no study being done on P. vigil in Malaysia. This crab is also poorly described and studied from the Indo-Pacific region except studies by Subramanian (2001) from Tamil Nadu, India and Sather (1966) from Hawaii, USA. Literature reviews shows that the fishery landing of this crabs is not recorded in the Malaysia Annual Fisheries Reports (DoFM., 2013).…”

Section: Introductionmentioning

confidence: 99%

Biological Features of Sentinel Crab Podophthalmus vigil (Fabricus, 1798) in Terengganu Coastal Water, Malaysia

Ikhwanuddi¹,

Khairil²,

Azra³

et al. 2015

J. of Fisheries and Aquatic Science

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Biological features of size at maturity, fecundity of berried female, size distribution, relationship of Carapace Width (CW) and Body Weight (BW) and sex ratio of sentinel crab, Podophthalmus vigil from Terengganu coastal water, Malaysia of South China Sea were studied. Sexual maturity (CW 50) was achieved at 11.51 cm for male and 9.53 cm for female. The mean fecundity was 312613.50±89835.08 eggs. Size distribution of male and female was slightly different with males have size range from 8.0 to 18.9 cm CW, while females ranged between 7.0 to 11.4 cm CW. The mean CW and BW of P. vigil males were significantly greater than that of females. The CW-BW relationship for males P. vigil was attained as BW = 46.892e 0.0719CW (R 2 = 0.1155) and for females was estimated as BW = 6.3117e 0.2665CW (R 2 = 0.5523). Finally, the sexual ratio of P. vigil for male to female was 1: 0.65. The data obtained from this study can be used as the baseline data for future study on P. vigil fishery and aquaculture management in Malaysia coastal water especially and within the Indo-pacific region generally.

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Observations On the Molt Cycle and Growth of the Crab, Podophthalmus Vigil (Fabricius) 1) (Decapoda, Portunidae )

Cited by 12 publications

References 14 publications

Copulation of the Japanese potamid crab <i>Geothelphusa dehaani</i> in their natural habitat

Copulation of the Japanese potamid crab <i>Geothelphusa dehaani</i> in their natural habitat

Güney Doğu Karadeniz’de Beam Trol ile Avlanan Liocarcinus depurator (Crustacea: Decapod: Brachyura)’ün Boya Dayalı Büyümesi

Biological Features of Sentinel Crab Podophthalmus vigil (Fabricus, 1798) in Terengganu Coastal Water, Malaysia

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