Effect of Sediment Type on Growth and Survival of Juvenile Horseshoe Crabs (Tachypleus tridentatus)

Hong, Song; Zhang, Xian; Zhao, Yingjun; Xie, Yongzhuang; Zhang, Yunwu; Xu, Huaxi

doi:10.1007/978-0-387-89959-6_34

Cited by 15 publications

(18 citation statements)

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“…It is interesting to note that out of four extant species of horseshoe crabs Limulus polyphemus, Tachypleus gigas, T. tridentatus and Carcinoscorpius rotundicauda, later three are inhabiting Malaysian coastal waters while the distribution of T.tridentatus is restricted to East Malaysian coast (Borneo) (John et al, 2010;Kamaruzzaman et al, 2011). Considerable amount of studies has been carried out on the nesting behaviour of American horseshoe crab L.polyphemus (Jackson et al, 2005;Tanacredi et al, 2009;Sekiguchi et al, 2009), Japanese tri spine horseshoe crab T.tridentatus (Yang et al, 2009;Hsieh and Chen, 2009;Hong et al, 2009). However, studies on other two conspecifics are still scanty (Zaleha et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Sediment Profiling of the Nesting Grounds of Horseshoe Crabs at East Peninsular Malaysia

John¹,

Sihin²,

Kamaruzzaman³

et al. 2012

IJB

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Horseshoe crabs prefer beaches with loosely packed sediment for the nesting of their eggs. In present study, Sediment profile at the observed the nesting grounds of horseshoe crabs along the east peninsular Malaysian coast were investigated. Two sampling sites (Balok and Pekan) were observed to be the nesting grounds of horseshoe crabs along the Pahang coast, east coast Malaysia. Mean sediment size analysis (ø phi) showed that during the non-monsoon and monsoon seasons, the distribution of sediment at the nesting grounds was mostly were of median sediment (1.88±0.378ø) and finer sediment (2.249±0.114ø) at Balok station respectively. Whereas, the distribution of sediment at the Pekan nesting ground was median sediment (1.073±0.388ø) at non monsoon and coarse sediment (0.641±0.075ø) at monsoon season. The nature of sediments were of moderately well sorted in both the sampling stations. There was no significant difference in sediment size or sorting value during monsoonal cycle. The results clearly showed that the sediment nature at the Balok and Pekan are still conducive for the better nesting of horseshoe crabs.

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Section: Introductionmentioning

confidence: 99%

Sediment Profiling of the Nesting Grounds of Horseshoe Crabs at East Peninsular Malaysia

John¹,

Sihin²,

Kamaruzzaman³

et al. 2012

IJB

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“…With respect to the animals studied here, the Z. duplicatum infestation was controlled eventually through the use of 10 ppm chlorine in freshwater for 1 h and maintained with the addition of aquarium sand into each culture vessel to allow crabs to burrow and facilitate self-cleaning. Provision of a substratum in aquaria, notably sand, can assist the survival of horseshoe crab juveniles (Hong et al, 2009). …”

Section: Discussionmentioning

confidence: 99%

Zoothamnium duplicatum infestation of cultured horseshoe crabs (Limulus polyphemus)

Shinn

Mühlhölzl²,

Coates

et al. 2015

Journal of Invertebrate Pathology

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Please cite this article as: Shinn, A.P., Mühlhölzl, A.P., Coates, C.J., Freeman, M.A., Metochis, C., Zoothamnium duplicatum infestation of cultured horseshoe crabs (Limulus polyphemus), Journal of Invertebrate Pathology (2014), doi: http://dx.doi.org/10. 1016/j.jip.2014.12.002 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. 1 Zoothamnium duplicatum infestation of cultured horseshoe crabs (Limulus polyphemus)

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“…A successful restocking program to enhance natural populations relies heavily on an adequate supply of juveniles for release. Several captive release or induced spawning programs have been reported in China (Hong et al 2009), Japan (see overview by Tsuchiya 2009) and Taiwan ) for Tachypleus tridentatus and in the USA for Limulus polyphemus (e.g. Cuomo 2009, Tzafrir-Prag et al 2009).…”

Section: Culture For Captive Releasementioning

confidence: 99%

“…It was reported that a hatched juvenile developed into an adult in its 11th year (Tsuchiya 2009). Hong et al (2009) …”

Section: Culture For Captive Releasementioning

confidence: 99%

Enhanced growth of juvenile Tachypleus tridentatus (Chelicerata: Xiphosura) in the laboratory: a step towards population restocking for conservation of the species

Cai¹,

柯才焕

2010

Aquat. Biol.

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Juveniles of artificially bred Tachypleus tridentatus were reared in the laboratory for 15.5 mo. Fast growth (at least 3 times faster than in previous studies) and low mortality were observed, with juveniles reaching the 9th instar stage and having a cumulative mortality of 61.3% at the end of the rearing period. Such enhanced growth can potentially be attributed to high seawater temperature, sufficient living space and constant water flow. Isometric growth of prosomal width and other growth parameters including opisthosoma width, eye distance and prosomal length was found. Two distinct growth phases were detected for the opisthosoma length, with zero growth from the 1st to 2nd instar but isometric growth from the 2nd to 9th instar stage. Growth in telson length was positively allometric from the 1st to 3rd instar and isometric from the 3rd to 9th instar stage. The increase in wet weight and prosomal width was isometric throughout the 9 developmental stages. Based on the allometric growth patterns, the juveniles can reach adult size within 4 yr. The results may serve as a basis for the large-scale culture of this species for the purposes of restocking and restoration of natural populations. KEY WORDS: Horseshoe crab · Tachypleus tridentatus · Juvenile growth · AllometryResale or republication not permitted without written consent of the publisher Aquat Biol 11: 37-46, 2010 Use of captive breeding for population enhancement in animal conservation has increased markedly in the last decade (Olney et al. 1994). In Taiwan, more than 10 000 individuals of second-instar juvenile Tachypleus tridentatus produced artificially in the laboratory were released in the protected area in Kinmen in 2002(Chen et al. 2004), while about 40 000 juveniles were released in the wild in Xiamen, China, in the same year. A successful restocking program relies heavily on an adequate supply of juveniles from artificial breeding, as juveniles released in the wild may suffer high mortality from predation, diseases, food availability, etc. The problems with juvenile horseshoe crabs in culture include low fertilization success, high juvenile mortality and slow growth of the instars (Sekiguchi et al. 1988, Chatterji 1994. The most extensive study of horseshoe crab growth was conducted by Sekiguchi (1988) on the juveniles of Limulus polyphemus and T. tridentatus, which required 9 yr to develop into 14th and 10th instars, respectively. The study itself, however, may not be representative because of both low numbers of specimens and survivors in the study, as an initial number of 44 and 33 ind. were used for L. polyphemus and T. tridentatus, respectively, and only one individual of each species survived at the end of the experiment.The actual life span and exact number of ecdysis events in horseshoe crabs are unknown (Tanacredi 2001, Carmichael et al. 2003, Lee & Morton 2005, as it is difficult to accurately assess age in horseshoe crabs (Botton & Ropes 1988). Goto & Hattori (1929) suggested that Tachypleus tridentatus molts 12 to 13 t...

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Effect of Sediment Type on Growth and Survival of Juvenile Horseshoe Crabs (Tachypleus tridentatus)

Cited by 15 publications

References 1 publication

Sediment Profiling of the Nesting Grounds of Horseshoe Crabs at East Peninsular Malaysia

Sediment Profiling of the Nesting Grounds of Horseshoe Crabs at East Peninsular Malaysia

Zoothamnium duplicatum infestation of cultured horseshoe crabs (Limulus polyphemus)

Enhanced growth of juvenile Tachypleus tridentatus (Chelicerata: Xiphosura) in the laboratory: a step towards population restocking for conservation of the species

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