Maturity and reproduction in the Arabian carpet shark,
            <i>Chiloscyllium arabicum</i>
            from the Saudi Arabian waters of the Arabian Gulf

Alhajji, Adnan H. M.; Hsu, Hua Hsun; Alkhamis, Yousef Ahmed; Alsaqufi, Ahmed Saud; Khan, S. Ajmal; Nazeer, Zahid

doi:10.1080/17451000.2022.2131824

Cited by 3 publications

(4 citation statements)

References 20 publications

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“…close relatives of the epaulette shark, female GSI increases during the reproductive season while HSI concurrently decreases, showing a clear reproductive energetic shift (Alhajji et al, 2022;Chen & Liu, 2006). Indeed, it is difficult to discern from our data whether HSI is changing, as the reproductive tract is generally increasing body condition.…”

Section: Girths and Body Condition Across Maturation And Reproductionmentioning

confidence: 74%

“…The log–log length–mass model fit coefficients reported herein indicate that epaulette sharks have slight negative allometry across ontogeny (Table 2: b = 2.860 ± 0.135, where b = 2.5–3.5 indicates isometry; Froese, 2006) and that this species has an ‘elongated’ body plan (Table 2, a 3.0 = 0.00423; Froese, 2006). The epaulette shark b coefficient is similar to reports from another Orectobliformes, such as the nurse shark ( b = 2.911; Castro, 2000), and more closely related Hemiscylliid sharks, such as the Arabian carpet shark ( Chiloscyllium arabium , b = 2.372–2.588; Alhajji et al ., 2022), grey bamboo shark ( C. griseum , b = 2.56–2.83; Kishore Kumar et al ., 2021), whitspotted bamboo shark ( C. plagiosum , b = 2.51–2.93; Kishore Kumar et al ., 2021), brownbanded bamboo shark ( C. punctatum , b = 2.81–3.21; Pattarapongpan et al ., 2021) and Cenderawasih epaulette shark ( H. galei , b = 1.3–2.3; Insani et al ., 2022). Our estimates of epaulette shark body proportions were different in neonates compared to every other life‐history grouping, where neonates had disproportionally larger heads and abdomens, indicating some elongation occurs during the transition to the juvenile stage (Figure 2).…”

Section: Discussionmentioning

confidence: 99%

“…In several other oviparous shark species, immature females had high HSI values that then decreased on maturing into reproducing females (Awruch et al ., 2008; Craik, 1978). For example, in both the oviparous whitespotted bamboo shark ( C. plagiosum ) and the Arabian carpet shark ( C. arabicum ), close relatives of the epaulette shark, female GSI increases during the reproductive season while HSI concurrently decreases, showing a clear reproductive energetic shift (Alhajji et al ., 2022; Chen & Liu, 2006). Indeed, it is difficult to discern from our data whether HSI is changing, as the reproductive tract is generally increasing body condition.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Nonlethally assessing elasmobranch ontogenetic shifts in energetics

Wheeler

Irschick

Mandelman

et al. 2023

Journal of Fish Biology

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Body condition is an important proxy for the overall health and energetic status of fishes. The classically used Fulton's condition factor requires length and mass measurements, but mass can be difficult to obtain in large species. Girth measurements can replace mass for wild pelagic sharks. However, girth-calculated condition has not been validated against Fulton's condition factor intraspecifically, across ontogeny or reproduction, or in a controlled setting. We used the epaulette shark (Hemiscyllium ocellatum), because they are amenable to captive reproduction, to track fine-scale body condition

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Section: Girths and Body Condition Across Maturation And Reproductionmentioning

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Nonlethally assessing elasmobranch ontogenetic shifts in energetics

Wheeler

Irschick

Mandelman

et al. 2023

Journal of Fish Biology

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“…The mean size at first maturity was estimated to be 557 mm for females and 514 mm for males, based on the relationship between the proportion between maturity stage and total length. The ovulation season was estimated to occur from October to March, whereas September to April was the mating season based on monthly variations of gonadosomatic index (GSI) values and the occurrence of egg cases in the uterus (Oktaviyani et al 2019;Alhajji et al 2022).…”

Section: Discussionmentioning

confidence: 99%

Biological aspect approach in sustainable management of coral catshark Atelomycterus marmoratus (Anonymous [Bennett], 1830) in Bali Strait, Indonesia

Lelono,

Bintoro,

Harlyan

et al. 2023

Biodiversitas

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Abstract. Lelono TD, Bintoro G, Harlyan LI, Setyanto A, Rihmi MK, Rudianto D. 2023. Biological aspect approach in sustainable management of coral catshark Atelomycterus marmoratus (Anonymous [Bennett], 1830) in Bali Strait, Indonesia. Biodiversitas 24: 5873-5882. Coral catshark (Atelomycterus marmoratus) is a shark species that thrives in many coral reefs. to evaluate the biological aspects of A. marmoratus and their type of growth curve for a time series to support their sustainability. Sampling was performed from August 23rd, 2019, to March 31st, 2020. The morphological analysis was performed by recording or photographing to reduce possible errors. Then, the length-weight relationship, sex ratio, length at first captured and matured, and spawning ratio were evaluated. The present study demonstrated that the coral catshark captured in the cohort that produces two cohorts only happens in February. The sex ratio is 41.6% male and 48.4% female, which is considered healthy, whereas the remaining percentage is so severely damaged that its gender cannot be determined. The FISAT-II software analysis results in a von Bertalanffy growth formula of Lt = 76.21 (1-e-2.01(t+0.0596)) with t max = 1.49/ year and L max = 77.39 cm. They grow steadily or tend to slow down after they reach the age of 1.5 years, with an asymptotic length of 77.39 cm. The Lc value (67.5 cm) is more significant than their Lm value (53 cm), indicating that their sustainability is highly possible to maintain because only fish that have passed the spawning stage are captivated. The spawning potential rate (SPR) is 35%, with M = 0.66, E = 1.85, and F = 0.78. These results indicate that the exploitation rate of coral catshark is moderate because 20% < SPR < 40%. In conclusion, the A. marmoratus length-weight relationship is categorized as negative allometric, where the length grows faster than the weight.

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Phylogenetic analysis of viviparity, matrotrophy, and other reproductive patterns in chondrichthyan fishes

Blackburn,

Hughes

2024

Biological Reviews

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The reproductive diversity of extant cartilaginous fishes (class Chondrichthyes) is extraordinarily broad, reflecting more than 400 million years of evolutionary history. Among their many notable reproductive specialisations are viviparity (live‐bearing reproduction) and matrotrophy (maternal provision of nutrients during gestation). However, attempts to understand the evolution of these traits have yielded highly discrepant conclusions. Here, we compile and analyse the current knowledge on the evolution of reproductive diversity in Chondrichthyes with particular foci on the frequency, phylogenetic distribution, and directionality of evolutionary changes in their modes of reproduction. To characterise the evolutionary transformations, we amassed the largest empirical data set of reproductive parameters to date covering nearly 800 extant species and analysed it via a comprehensive molecular‐based phylogeny. Our phylogenetic reconstructions indicated that the ancestral pattern for Chondrichthyes is ‘short single oviparity’ (as found in extant holocephalans) in which females lay successive clutches (broods) of one or two eggs. Viviparity has originated at least 12 times, with 10 origins among sharks, one in batoids, and (based on published evidence) another potential origin in a fossil holocephalan. Substantial matrotrophy has evolved at least six times, including one origin of placentotrophy, three separate origins of oophagy (egg ingestion), and two origins of histotrophy (uptake of uterine secretions). In two clades, placentation was replaced by histotrophy. Unlike past reconstructions, our analysis reveals no evidence that viviparity has ever reverted to oviparity in this group. Both viviparity and matrotrophy have arisen by a variety of evolutionary sequences. In addition, the ancestral pattern of oviparity has given rise to three distinct egg‐laying patterns that increased clutch (brood) size and/or involved deposition of eggs at advanced stages of development. Geologically, the ancestral oviparous pattern arose in the Paleozoic. Most origins of viviparity and matrotrophy date to the Mesozoic, while a few that are represented at low taxonomic levels are of Cenozoic origin. Coupled with other recent work, this review points the way towards an emerging consensus on reproductive evolution in chondrichthyans while offering a basis for future functional and evolutionary analyses. This review also contributes to conservation efforts by highlighting taxa whose reproductive specialisations reflect distinctive evolutionary trajectories and that deserve special protection and further investigation.

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Maturity and reproduction in the Arabian carpet shark, Chiloscyllium arabicum from the Saudi Arabian waters of the Arabian Gulf

Cited by 3 publications

References 20 publications

Nonlethally assessing elasmobranch ontogenetic shifts in energetics

Nonlethally assessing elasmobranch ontogenetic shifts in energetics

Biological aspect approach in sustainable management of coral catshark Atelomycterus marmoratus (Anonymous [Bennett], 1830) in Bali Strait, Indonesia

Phylogenetic analysis of viviparity, matrotrophy, and other reproductive patterns in chondrichthyan fishes

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