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REPRODUCTIVE BIOLOGY OF THE FLATTENED PORCELAIN CRAB, PETROLISTHES RUFESCENS (PORCELLANIDAE: ANOMURA: CRUSTACEA) FROM AIN SUKHNA, GULF OF SUEZ, EGYPT

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Last updated: 03 Jan 2025

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Botany
Microbiology
Zoology

Abstract

The reproductive biology of the porcelain crab Petrolisthes rufescens(Heller, 1861) population at Ain Sukhna (62 km south Suez City) was studied during the period from April 2000 to May 2001. Sexual dimorphism was determined based on morphological differences between sexes. Abdomen is semi-circular with four pairs of biramous appendages in females, but tapering with only two pairs of unequal uniramous appendages (pleopds) in males. Size at first maturity was determined using allometric growth occurring at puberty from the relationships between male's 2nd pleopodal length and chelae length against carapace length (C.L.) and by the appearance of distinctive ovaries in females. Overall sex ratio for this crab species was 1: 0.70 males to females, with highly significant Chi-square value (X2 = 7.486, P< 0.05, df =1).It was not constant throughout the year particularly during breeding seasons, showing highly significant Chi-square value (X2 = 20.185, df= 25, P < 0.05). Based on the appearance of ovigerous females, the breeding of P. rufescens is lengthy, start often at late winter and early spring and extends through summer to early autumn. Incubated eggs are oval or semi-oval, sometimes elliptical with polygonal surfaces, and varied in size from 400 to 1000 m with an average of 640 ± 105 m. These eggs are passed through five stages of maturation, and showed remarkably gradual decreasing in size throughout the period of incubation, reaching the minimum at last stages (stage V or the releasing larvae). The color of incubated eggs is also changed from bright yellow in newly laid eggs to grey at the last stage of development. The fecundity of ovigerous females was relatively low, varied from 35 to 450 with an average of 208 ± 92 eggs /female crab. It was correlated by a curvilinear relationship with carapace length only.

DOI

10.21608/absb.2011.7030

Keywords

PORCELLANIDAE, ANOMURA, Crustacea, Gulf of Suez

Authors

First Name

AWAAD

Last Name

EL-SAYED

MiddleName

A.

Affiliation

Section of Marine Biology and Fishes, Zoology Department, Faculty of Science, Al- Azhar University, Cairo, Egypt.

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Orcid

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First Name

MOSTAFA

Last Name

FOUDA

MiddleName

M.

Affiliation

Consultant for Minister of Environment, State Ministry of Environment, Cairo, Egypt.

Email

-

City

-

Orcid

-

First Name

AHMED

Last Name

AZAB

MiddleName

M.

Affiliation

Section of Marine Biology and Fishes, Zoology Department, Faculty of Science, Al- Azhar University, Cairo, Egypt.

Email

-

City

-

Orcid

-

First Name

ISMAIL

Last Name

ISMAIL

MiddleName

M.

Affiliation

M.Sc. in Marine Biology.

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City

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Orcid

-

Volume

22

Article Issue

Issue 2-C

Related Issue

1339

Issue Date

2011-12-01

Receive Date

2011-07-13

Publish Date

2011-12-01

Page Start

17

Page End

33

Print ISSN

1110-2535

Online ISSN

2636-3305

Article File

ABSB_Volume 22_Issue Issue 2-C_Pages 17-33.pdf

PDF . 233.8kB

Link

https://absb.journals.ekb.eg/article_7030.html

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https://absb.journals.ekb.eg/service?article_code=7030

Order

2

Type

Original Article

Type Code

520

Publication Type

Journal

Publication Title

Al-Azhar Bulletin of Science

Publication Link

https://absb.journals.ekb.eg/

MainTitle

REPRODUCTIVE BIOLOGY OF THE FLATTENED PORCELAIN CRAB, PETROLISTHES RUFESCENS (PORCELLANIDAE: ANOMURA: CRUSTACEA) FROM AIN SUKHNA, GULF OF SUEZ, EGYPT

Details

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Article

Created At

22 Jan 2023