Morphology of Testis and Vas Deferens in the Xanthoid Crab, Eriphia Verrucosa (Forskål, 1775) (Decapoda: Brachyura)

Erkan, Melike; Tunali, Yasemin; Balkıs, Hüsamettin; Oliveria, Elsa

doi:10.1651/08-3114.1

Cited by 20 publications

(38 citation statements)

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“…In the warty crab Eriphia verrucosa [15] and in the Chinese mitten crab Eriocheir sinensis [14], the gland was formed of cords of cells located on the wall of the posterior vas deferens. In the crayfish Cherax destructor, multiple cords of epithelial cells of the androgenic gland were attached to the posterior vas deferens [17].…”

Section: Discussionmentioning

confidence: 99%

“…As reported for O. platytarsis [13] and S. paramamosain [43], three cell types could be distinguished in the androgenic gland of T. schirnerae. On the other hand, the androgenic gland was composed of two cell types in P. clarkii [16], P. chinensis [20,38], P. trituberculatus [22], E. verrucosa [15] and five cell types in O. nais [23]. The size of the androgenic gland cells of T. schirnerae was comparable to that of other decapods such as Pachygrapsus crassipes [30], Rithropanopeus harrisii, C. sapidus [42], P. clarkii [16,49], C. destructor [17], S. paramamosain [43] and marine shrimps [37].…”

Section: Discussionmentioning

confidence: 99%

“…In O. platytarsis, the three cell types were distinguished based on the nature of cytoplasm and presence or absence of vacuoles [13]. But in E. verrucosa, the differentiation of two cell types was based on size, shape of nucleus and presence or absence of secretory vesicles and vacuoles [15]. In P. chinensis, the two cell types were identified by their size [20].…”

Section: Discussionmentioning

confidence: 99%

“…the activity of the gland ended just before the mating season. In E. verrucosa, the major mating season is between late July and the end of August, which corresponded to the destruction of type II cells after releasing their contents [15]. In M. lamerri, the androgenic gland showed signs of increased secretory activity during the sexually active phase of the animal [19].…”

Section: Discussionmentioning

confidence: 99%

“…Though the structure and function of the androgenic glands have been well described in many marine, estuarine and intertidal crabs [13,15,24,30,42,43], reports on freshwater crabs are limited [44]. Therefore, the present study was undertaken to investigate the seasonal changes in structure and secretory activity of the androgenic gland in the freshwater crab, Travancoriana schirnerae, a common species found in Wayanad, Kerala, India.…”

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confidence: 99%

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Seasonal changes in the structure and secretory activity of the androgenic gland of Travancoriana schirnerae

Devi¹,

Smija²

2013

Open Life Sciences

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This study investigated the seasonal variation in the structure and secretory activity of the androgenic gland (AG) in the freshwater crab: Travancoriana schirnerae. The androgenic gland is an elongate structure, attached to one side on the wall of the ejaculatory duct. Histological studies showed the presence of three cell types, which differ in size, shape of nuclei, and presence or absence of secretory vesicles. Type I cells are small with large nuclei whereas type II cells are large with small nuclei. Type III cells are intermediate in size and exhibited streak-like nuclei and transparent cytoplasm. Seasonal changes were discerned in the morphology, histology and secretory activity of the gland. March-June appeared to be the active season with type II cells containing secretory vesicles. The mode of release of secretion found to be holocrine. The secretory activity almost completed by July-August (the mating season) with vacuolization of type II cells. The gland remained inactive from September-December with abundance of vacuoles, scattered pycnotic nuclei, indistinct cell membranes and total cellular degeneration. January-February was the revival period with type I cell proliferation. The present study revealed that the secretory activity of the gland is in tune with the male reproductive cycle.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Seasonal changes in the structure and secretory activity of the androgenic gland of Travancoriana schirnerae

Devi¹,

Smija²

2013

Open Life Sciences

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Male internal reproductive structures of european pea crabs (Crustacea, Decapoda, Brachyura, Pinnotheridae): Vas deferens morphology and spermatozoal ultrastructure

Becker

Klaus

Tudge³

2013

Journal of Morphology

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Pea crabs of the subfamily Pinnotherinae (Pinnotheridae) have a high investment in reproduction and an outstanding reproductive output, probably as an adaptation to the required increase in reproductive rate due to the pinnotherids small size and their parasitic, host-dependant way of life. In the present study, we investigate the male internal reproductive structures and the ultrastructure of spermatozoa of Pinnotheres pisum and Nepinnotheres pinnotheres by histological methods and both scanning- and transmission electron microscopy. In the Brachyura, the male internal reproductive systems generally consist of paired testes and corresponding vasa deferentia where spermatozoa develop and mature. Spermatozoal ultrastructure of the investigated pinnotherids conforms to the thoracotreme type, however, N. pinnotheres has an accessory opercular ring and a periopercular rim, neither of which are present in spermatozoa of P. pisum. Spermatozoa are enclosed within spermatophores in the secretory proximal vas deferens. Two types of secretions were observed in P. pisum and N. pinnotheres: an electron dense substance secreted in the proximal vas deferens involved in spermatophore formation, and large electron-luscent vesicles constituting the seminal plasma in the medial and distal vas deferens. The medial vas deferens is strongly widened compared to other brachyurans to purpose storing spermatophores embedded in seminal plasma. Tubular appendices, which produce and store large amounts of seminal plasma, arise from the distal region of the vas deferens. The appendices extend into the ventral cephalothorax and also in the first pleomere. The latter being an exceptional location for reproductive structures among male brachyurans.

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Integrative depiction of the male reproductive system of the commercial purple crab Homalaspis plana (Platyxanthidae): Structure and function

Pardo

Zara

Riveros

et al. 2019

Journal of Morphology

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The information available on structures and function of reproductive systems are female-biased in many animal groups and crabs are not an exception. However, knowledge about the male reproductive system can help us to understand evolutionary and ecological processes such as the mating system and mating behavior. This study focuses on an integrative description of the principal regions of the male reproductive system of the purple crab, Homalaspis plana, a commercially exploited crab from the southeastern Pacific. For this description a combination of morphological observation, gravimetric records, histological and histochemical techniques and biochemical analysis were used. Also, a gross description of the seminal receptacle of the female was performed. The male reproductive system of H. plana was highly extended and complex, with a great capacity to produce and store spermatophores and secrete, at least, two kinds of seminal fluids. Sperm production, sperm packaging in spermatophores, storage of spermatophores and seminal liquid secretion were functions localized in specific regions. The vasosomatic index was the highest recorded to date in crabs, symptomatic of a high investment in reproduction. All these traits allow identification of H. plana as an internal sperm plug producer, which matches well with the highly extensible seminal receptacle of females. The great quantity of seminal material transferred to females during mating indicates that males may be able to mate only one time in the reproductive season and thus this species could be vulnerable to sperm depletion in males and sperm limitation in females if the fishery substantively reduced the abundance of males in the populations. K E Y W O R D S Brachyura, mating systems, seminal receptacle, sperm plug, vas deferens

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Morphology of Testis and Vas Deferens in the Xanthoid Crab, Eriphia Verrucosa (Forskål, 1775) (Decapoda: Brachyura)

Cited by 20 publications

References 47 publications

Seasonal changes in the structure and secretory activity of the androgenic gland of Travancoriana schirnerae

Seasonal changes in the structure and secretory activity of the androgenic gland of Travancoriana schirnerae

Male internal reproductive structures of european pea crabs (Crustacea, Decapoda, Brachyura, Pinnotheridae): Vas deferens morphology and spermatozoal ultrastructure

Integrative depiction of the male reproductive system of the commercial purple crab Homalaspis plana (Platyxanthidae): Structure and function

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